Android — Android studio, Error OkHttp3


Содержание

Android Studio 3.0 решение проблемы «AAPT2 error»

При попытке компиляции старых проектов или создании нового после обновления Android Studio до версии 3.0 вываливаются ошибки следующего вида:

Связано это с тем, что теперь по умолчанию используется AAPT2 (Andro >

Для отключения AAPT2 необходимо открыть файл gradle.properties , находящийся в корне проекта, и вставить строчку andro >, после чего синхронизовать проект (File -> Synchronize или Crtl+Alt+Y).

Ошибочность такого подхода в том, что отключать использование AAPT2 в пользу старой версии придется вручную в каждом проекте, при этом старая версия может быть объявлена устаревшей и не факт, что в будущем её совсем не выпилят.

Поэтому разбираться надо с самой проблемой, а не закрывать на неё глаза. К тому же это весьма просто.

Если копнуть чуть глубже, то становится ясно, что ошибка вызвана с наличием кириллицы в пути к папке, в которой лежат ресурсы gradle. Связано это с тем, что AAPT2 дружит только с ASCII символами.

Исправляется сея беда следующим образом:

  • Открываем настройки File -> Settings (CTRL+ALT+S)
  • Ищем вкладку Build, Execution, Deployment -> Gradle
  • Меняем путь, прописанный в поле Service directory path, на новый, не содержащий кириллицы.

После этого в новых проектах проблем не будет, а для старых надо просто произвести ребилд: Build -> Make Project (CTRL+F9)

Ошибка Andro >

Недавно я установил последнюю версию Canary на базе Android Studio, которая в настоящее время использует плагин Android Gradle 3.0.0-alpha4.

Теперь я получаю сообщение об ошибке:

Я прочитал: Миграция конфигураций зависимостей для локальных модулей

Но у меня все еще есть эта ошибка: Error:Failed to resolve: Could not resolve project :MyLib.

РЕШЕНИЕ :

Типы сборки и вкусы в приложении и библиотеке должны быть одинаковыми

После того, как вы столкнулись с одной и той же проблемой, я, наконец, объявил точно такие же buildTypes в файлах build.gradle для приложений и модулей.

В вашем случае добавление

К вашему модулю build.gradle должен сделать трюк.

Обязательно измените любой «проект компиляции» на «проект реализации».

С новым плагином, вариантное разрешение зависимостей

Должны иметь точные соответствия типам сборки. Руководство по миграции описывает это

Например, невозможно сделать вариант «отладки» потреблять вариант «выпуска» через этот механизм, потому что производитель и потребитель не будут соответствовать. (В этом случае имя «debug» относится к опубликованному объекту конфигурации, упомянутому выше в разделе «Зависимости публикации».) Теперь, когда мы публикуем две конфигурации: одну для компиляции и одну для среды выполнения, этот старый способ выбора одной конфигурации действительно не » T работать больше.

Таким образом, старый метод

Больше не будет работать.

пример

В вашем примере это будет выглядеть так:

В приложении build.gradle :

В модуле / lib ‘MyLib’ build.gradle :

Поэтому тип сборки должен точно соответствовать, не больше, не меньше.

Я столкнулся с такой же проблемой, я нашел эту страницу миграции: постройте соответствующие типы

Выберите значения по умолчанию для отсутствующих типов сборки
Если потребитель настраивает тип сборки, который нет у производителя, вам необходимо вручную сопоставить тип сборки потребителя с именем производителя. Например, если ваш модуль приложения настраивает тип сборки и его зависимость от библиотечного модуля, «mylibrary», нет, плагин Android выдает следующую ошибку сборки:

Error:Failed to resolve: Could not resolve project :mylibrary. Required by: project :app

Чтобы устранить эту ошибку, вам нужно указать тип сборки из «mylibrary», который должен иметь плагин Android, соответствующий типу сборки. Вы можете сделать это с помощью свойства buildTypeMatching в файле build.gradle приложения, как показано ниже:


Добавление buildTypeMatching исправило это для меня, не создавая ненужные типы в моей библиотеке

Andro > Jerry Zhao March 4, 2020 2

This example will show you how to use OkHttp3 to send get or post http request to a web server and how to parse and display response text in an android TextView.

1. OKHttp Characters.

OkHttp3 is a third party open source library which is contributed by square company. It has below characters.

  1. User friendly API.
  2. Support http2, sharing the same socket for all requests from a machine.
  3. Built-in connection pool, support for connection reuse, and reduction of delay.
  4. Supports transparent gzip compression response.
  5. Avoid duplicate requests by caching.
  6. Automatically retry the host’s other IP and redirect automatically when the request fails.

2. Add OkHttp3 Library In build.gradle.

Before you can use OkHttp3 library, you need to add dependencies in build.gradle file in andro >

After add below code, you need to click Sync Now link in top right to sync the project.

2. Use OkHttp3 To Create Http Get Request Method Call Object.

3. Use OkHttp3 To Create Http Post Request Method Call Object.

4. Send Http Request Synchronously And Asynchronously.

You can send http get or post request with OkHttp3 synchronously or asynchronously.

When you send the request synchronously, you need to run the code in a child thread because the process may take long time.

When you send the request asynchronously, the system will create a child thread and run OkHttp3 code in it automatically.

Using OkHttp

OkHttp is a third-party library developed by Square for sending and receive HTTP-based network requests. It is built on top of the Okio library, which tries to be more efficient about reading and writing data than the standard Java I/O libraries by creating a shared memory pool. It is also the underlying library for Retrofit library that provides type safety for consuming REST-based APIs.

The OkHttp library actually provides an implementation of the HttpUrlConnection interface, which Android 4.4 and later versions now use. Therefore, when using the manual approach described in this section of the guide, the underlying HttpUrlConnection class may be leveraging code from the OkHttp library. However, there is a separate API provided by OkHttp that makes it easier to send and receive network requests, which is described in this guide.

In addition, OkHttp v2.4 also provides a more updated way of managing URLs internally. Instead of the java.net.URL , java.net.URI , or android.net.Uri classes, it provides a new HttpUrl class that makes it easier to get an HTTP port, parse URLs, and canonicalizing URL strings.

Makes sure to enable the use of the Internet permission in your AndroidManifest.xml file:

Simply add this line to your app/build.gradle file:

Note: If you are upgrading from an older version of OkHttp, your imports will also need to be changed from import com.squareup.okhttp.XXXX to import okhttp3.XXXX .

Note: If you are intending to use Picasso with OkHttp3, you can either upgrade Picasso to the latest snapshot version or use this custom downloader. This change is necessary until the next release of Picasso as described here.

You will then wrap the OkHttpClient with this OkHttp3Downloader . Note: as of OkHttp3 , it is recommended you declare this object as a singleton because changes in OkHttp3 no longer require a global connection pool. See this changelog for more details.

First, we must instantiate an OkHttpClient and create a Request object.

If there are any query parameters that need to be added, the HttpUrl class provided by OkHttp can be leveraged to construct the URL:

If there are any authenticated query parameters, headers can be added to the request too:

We can create a Call object and dispatch the network request synchronously:

Because Android disallows network calls on the main thread, you can only make synchronous calls if you do so on a separate thread or a background service. You can use also use AsyncTask for lightweight network calls.

We can also make asynchronous network calls too by creating a Call object, using the enqueue() method, and passing an anonymous Callback object that implements both onFailure() and onResponse() .

OkHttp normally creates a new worker thread to dispatch the network request and uses the same thread to handle the response. It is built primarily as a Java library so it does not handle the Android framework limitations that only permit views to be updated on the main UI thread.

For this reason, if you try to access or update views from outside the main thread in the Callback , you will probably receive an exception: android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views . Read more about the relationship between the main thread and views here.

If you need to update any views from within a response, you will need to use runOnUiThread() or post the result back on the main thread:

See this guide for more context. Alternatively, you could use an extension of Callback such as MainThreadCallback which wraps up this sort of behavior neatly and places you within the main thread from the response callback by default.

Assuming the request is not canceled and there are no connectivity issues, the onResponse() method will be fired. It passes a Response object that can be used to check the status code, the response body, and any headers that were returned. Calling isSuccessful() for instance if the code returned a status code of 2XX (i.e. 200, 201, etc.)


The header responses are also provided as a list:

The headers can also be access directly using response.header() :

We can also get the response data by calling response.body() and then calling string() to read the entire payload. Note that response.body() can only be run once and should be done on a background thread.

Suppose we make a call to the GitHub API, which returns JSON-based data:

We can also decode the data by converting it to a JSONObject or JSONArray , depending on the response data:

Note that the string() method on the response body will load the entire data into memory. To make more efficient use of memory, it is recommended that the response is processed as a stream by using charStream() instead. This approach, however, requires using the Gson library. See this guide for setup instructions.

To use the Gson library, we first must declare a class that maps directly to the JSON response:

We can then use the Gson parser to convert the data directly to a Java model:

OkHttp has a mechanism to modify outbound requests using interceptors. A common use case is the OAuth protocol, which requires requests to be signed using a private key. The OkHttp signpost library works with the SignPost library to use an interceptor to sign each request. This way, the caller does not need to remember to sign each request:

We can setup network caching by passing in a cache when building the OkHttpClient :

We can control whether to retrieve a cached response by setting the cacheControl property on the request. For instance, if we wish to only retrieve the request if data is cached, we could construct the Request object as follows:

We can also force a network response by using noCache() for the request:

We can also specify a maximum staleness age for the cached response:

To retrieve the cached response, we can simply call cacheResponse() on the Response object:

OkHttp can be hard to troubleshoot when trying to step through the various layers of abstraction in the libraries. You can add the HttpLogInterceptor that can be added when using the OkHttp3 library, which will print HTTP requests/responses through LogCat. You can also leverage Facebook’s Stetho project to use Chrome to inspect all network traffic.

To use HttpLogInterceptor , add this dependency to your Gradle configuration:

You will need to add a network interceptor for HttpLogInterceptor. See this doc for the different options that can be used.

Use Facebook’s Stetho plugin to monitor network calls with Chrome:

Add this line to your Gradle configuration:

When instantiating OkHttp , make sure to pass in the StethoInterceptor .

Finally, make sure to initialize Stetho in your Application:

OkHttp v3.5 now includes support for bidirectional web sockets. The URL that should be used should be prefixed with ws:// or wss:// for the secure version. Although the connection ports are the same as HTTP (port 80 and port 443), the server still needs to be configured to support WebSockets since they are a completely different protocol.

To send a message, simply use the send() function:

Note that OkHttp handles all the work on a separate thread, so you don’t have to worry about making Websocket calls on the main thread.

If you need to close the connection properly, make sure to use a status code of 1000. See this link for the different status codes.

If you are seeing SSL handshake terminated errors and using Android 4.0 devices, you will need to enable TLS v1.2 explicitly. Android has supported TLS 1.2 since API 16 (Android 4.1). You also should ensure you are using the latest OpenSSL by using the ProviderInstaller as described here.

This should be in the first line of your Application (or at least before OkHttp initializes):

Check out Square’s official recipe guide for other examples of using OkHttp.

Okhttp 3 example in Andro >

The following code demonstrates using Okhttp 3 in Android for making network calls with username and password, Bearer token or without any credential.

1. Add the internet use permission in the manifest file.

2. Add the okhttp 3 dependencies in the gradle file, the second one is for logging.

3. Create the network service interface, NetworkInterface.java

4. The okhttp 3 network service implementation, NetworkService.java

5. Use it on a background thread.


Android — Android studio, Error: OkHttp3

Android apps rely on rest services running on server for authentication & authorization, getting and posting data. Since the services on the web run on http protocol, in order to network with servers, android apps need http client. While there are several http client libraries and frameworks including volley which can be used in Android, OkHttp, an Http & Http/2 client, is widely used in android and java applications.

In this article, I am going to explain features of OkHttp and show how to use OkHttp in android to make http get, post, multipart, json and asynchronous request calls with examples.

OkHttp Supports Http/2

Below are some of the features of http/2

  • Http/2 is a binary protocol which is more efficient compared to text protocol Http.
  • Http/2 supports multiplexing meaning multiple requests and responses can be in flight at the same time on a connection.
  • Http/2 supports header compression leading to reduced network round trips.
  • Http/2 provides improved security.

Features of OkHttp.

OkHttp supports below features which make OkHttp an efficient http client with fast loading and reduced network bandwidth.

  • OkHttp supports Http/2 protocol.
  • Connection pooling can used for http protocol connections.
  • GZIP compression shrinks network data size.
  • Cache eliminates network round trip for repeating requests.
  • OkHttp silently recovers from network problems.
  • If your server is load balanced, OkHttp tries to connect other nodes when it fails to connect one of the nodes in load balancer.
  • OkHttp supports both synchronous and asynchronous calls.
  • You can use OkHttp on Android 2.3 and Java 7 versions onwards.

Add Library to Project

You can add OkHttp library to your project by adding below line to your module gradle property file.

Add Permission to Manifest

As below examples access rest services on server, internet permission is required. Add below permission to manifest xml file.

Android OkHttp Examples

In the below examples, the process of making reset service calls and updating UI with responses is executed in the background thread using AsyncTask. I provided below detailed explanation of each type of http request and complete android OkHttp example code.

Android OkHttp Get Example

Below code shows how to send http get request using OkHttp. To make an http get request call using OkHttp, you need to create Request object by using Request.Builder. Then call newCall method on OkHttpClient object passing the Request object. Finally, call execute() method on Call object to make http get request and receive response.

Above service call returns response in JSON format. Once you get JSON string from response by calling response.body().string(), you can use JSONOjbect or gson for parsing it. If you need more information on how to parse json in android, you can view my previous posts parsing JSON using JSONObject and parsing Json using gson library.

Android OkHttp Get Request With Query String Example

To make http get request call with query parameter using OkHttp, you need to use HttpUrl.Builder and add query parameter to it by calling addQueryParameter on HttpUrl.Builder as shown in below code.

Android OkHttp Post Example

To add post data to Request as key value pairs like data from html forms, you need to use FormBody.Builder, add post parameters to it, and create RequestBody as shown below.

Android OkHttp POST JSON Example

You can post json string to server using OkHttp. To do that, you need to create RequestBody object using create method on RequestBody passing json MediaType and json string as show below.

Android OkHttp Headers Example

You can add headers to request when request object is created or in intercepters by calling addHeader method on Request.Builder object.

Android OkHttp Async Call

In our examples, as UI needs to be updated with response after service call, entire process of making service calls and updating UI is done in the background using AsyncTask. But if you don’t need to use AsyncTask but only want to make http call asynchronously, you can do so by calling enqueue method on Call object passing Callback instead of execute method which makes http call synchronously.

Android OkHttp Multipart Example

To upload files or send multiple parts to http server, you need to send http multipart request. You can create multipart requests in OkHttp by building RequestBody using MultipartBody.Builder shown below. MultipartBody.Builder allows you to add data parts using addFormDataPart method.

Android OkHttp Example Code

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Ошибка в HttpConnection — Andro >

У меня есть простой класс, написанный в Android Studio:

, и из этого я получаю следующую ошибку времени компиляции:

Cannot resolve symbol HttpClient

Не входит ли HttpClient в Android Studio SDK? Даже если это не так, я добавил его в мою сборку Gradle следующим образом:

С или без последней строки компиляции ошибка такая же. Что мне не хватает?

22 ответа

HttpClient больше не поддерживается в sdk 23. Вы должны использовать URLConnection или перейти на sdk 22 ( compile ‘com.android.support:appcompat-v7:22.2.0’ )

Если вам нужен sdk 23, добавьте это в свою граду :

Вы также можете попытаться загрузить и включить HttpClient jar прямо в свой проект или использовать OkHttp вместо

Как уже упоминалось ранее, org.apache.http.client.HttpClient больше не поддерживается:

SDK (уровень API) # 23.

Вы должны использовать java.net.HttpURLConnection .

Если вы хотите сделать свой код (и жизнь) проще при использовании HttpURLConnection , вот Wrapper этого класса, позволит вам выполнять простые операции с GET , POST и PUT с помощью JSON , например, с помощью HTTP PUT .

Не стесняйтесь использовать его.

Использовать Apache HTTP для SDK уровня 23:

Top level build.gradle — /build.gradle

Уведомление от студии Android о обновлении градиента:

Тип модуля build.gradle — /app/build.gradle

HttpClient больше не поддерживается в sdk 23. Релиз Android 6.0 (API Level 23) удаляет поддержку для HTTP-клиента Apache. Вы должны использовать

, а также добавить ниже фрагмент кода в вашей зависимости:

// http окончательное решение для веб-сервиса (включая загрузку файлов)

Он также поможет вам, пока вы используете Use MultipartEntity для загрузки файлов.

в API 22 они устаревают, и в API 23 они полностью их удалили, простое обходное решение, если вам не нужны все причудливые вещи из новых дополнений, — просто использовать файлы .jar из apache, которые были интегрированы перед API 22, но в виде отдельных файлов .jar:

2- откройте zip, скопируйте файлы jar в папку libs. Вы можете найти его, если перейдете к вершине своего проекта, где говорится «Android», вы найдете список, когда вы нажмете его. Итак,

, затем поместите там банки.

3- В сборке .gradle (Module: app) add

4- В классе java добавьте следующие импорты:

Ошибка: (30, 0) Метод Gradle DSL не найден: ‘classpath ()’ Возможные причины:

  • В проекте «cid» может использоваться версия подключаемого модуля Android Gradle, который не содержит метода (например, ‘testCompile’ был добавлен в 1.1.0). Обновление плагина до версии 2.3.3 и проекта синхронизации
  • В проекте «cid» может использоваться версия Gradle, которая не содержит этот метод. Open gradle wrapper file
  • В файле сборки может отсутствовать плагин Gradle. Применить плагин Gradle

    Клиент ApacheHttp удален в v23 sdk. Вы можете использовать HttpURLConnection или сторонний Http-клиент, например OkHttp.

    Какой целевой API вы используете в своем проекте? AndroidHttpClient предназначен только для уровня API 8. и посмотрите здесь


    , наслаждайтесь своим кодом:)

    Просто используйте это: —

    Вы можете просто добавить это в зависимости от Gradle:

    Вы должны добавить только одну строку

    в build.gradle (Module: app), например

    Другой способ — если у вас есть файл httpclient.jar, вы можете сделать это:

    Вставьте свой .jar-файл в папку «libs» в вашем проекте. Затем в градиенте добавьте эту строку в свой build.gradle (Module: app)

    Попробуйте это сработало для меня. Добавьте эту зависимость в ваш файл build.gradle

    Добавьте эти две строки в зависимости от зависимостей

    Если вам нужен sdk 23, добавьте это в свою граду:

    HttpClient не поддерживается в sdk 23 и 23 +.

    Если вам нужно использовать в sdk 23, добавьте ниже код к вашему gradle:

    Его работа для меня. Надеюсь, вам полезно.

    Я думаю, в зависимости от того, какая версия Android Studio у вас есть, важно также обновить свою студию Android, я тоже разочаровался в советах каждого, но не повезло, пока мне не пришлось обновлять версию Android от 1.3 до 1.5, ошибки исчезли, как магия.

    HttpClient устарел на уровне API 22 и удален в API-уровне 23. Вы все равно можете использовать его в API-интерфейсе 23 и далее, если вам нужно, однако лучше всего перейти к поддерживаемым методам обработки HTTP. Итак, если вы компилируете с 23, добавьте это в свой build.gradle:

    релиз Android 6.0 (API Level 23) удаляет поддержку для HTTP-клиента Apache. Следовательно, вы не можете использовать эту библиотеку непосредственно в API 23. Но есть способ ее использования. Добавьте useLibrary ‘org.apache.http.legacy’ в ваш файл build.gradle, как показано ниже —

    Если это не сработает, вы можете применить следующий хак —

    Known issues with Andro devsite-toc-embedded >

    This page tracks known issues with Android Studio 3.5 and Android Gradle plugin 3.5.0. If you experience an issue not already included here, please report a bug.

    Upgrade to preview: Each release of Android Studio and the Android Gradle plugin aims to improve stability and performance, and add new features. To experience the benefits of upcoming releases now, download and install Android Studio Preview.

    Known Issues with Android Studio

    This section describes known issues that exist in the latest stable version of Android Studio.

    Code editing

    This section describes known issues related to the code editor.

    Frozen keyboard input — «iBus» problems on Linux

    There are some known interactions between the iBus daemon on Linux and Android Studio. In some scenarios, the IDE stops responding to keyboard input or starts inputting random characters. This bug is triggered by some missing synchronization between iBus and XLib + AWT, and has already been reported upstream to JetBrains and iBus. There are three current workarounds for this issue:

    • Workaround 1: Force iBus into synchronous mode. Before starting Andro >ibus-daemon -rd ), you effectively disable the input methods for all other applications and may also crash Andro >ibus-setup on the command line to open the IBus Preferences window. Under Keyboard Shortcuts, check the Next input method. If it is set to Control+Space, change it to Super+Space, or another shortcut of your choice.

    Project configuration

    This section describes known issues related to project configuration and Gradle sync.

    Gradle Sync Failed: Broken Pipe

    The issue is that the Gradle daemon is trying to use IPv4 instead of IPv6.

      Workaround 1: On Linux, put the following in your

    /.bash_profile :

  • Workaround 2: in Andro >-Djava.net.preferIPv6Addresses=true to -Djava.net.preferIPv6Addresses=true For more information, see the Networking IPv6 User Guide.

  • «peer not authenticated» errors from Gradle sync or SDK Manager

    The root cause of these errors is a missing certificate in $JAVA_HOME/jre/lib/certificates/cacerts . To resolve these errors, proceed as follows:

    • If you’re behind a proxy, try to connect directly. If the direct connection works, then in order to connect via the proxy you may need to use keytool to add the proxy server’s certificate to the cacerts file.
    • Re-install a supported, unmodified JDK. There’s a known issue affecting Ubuntu users, which results in an empty /etc/ssl/certs/java/cacerts . To work around this issue, execute the following on the command line:

    Deploying

    This section describes known issues related to deploying your app to a connected device.

    Android Emulator HAXM on macOS High Sierra

    The Android Emulator on macOS High Sierra (10.13) requires HAXM 6.2.1+ for best compatibility and stability with macOS. However, macOS 10.13 has a more involved process to install kernel extensions such as HAXM. You need to manually allow the kernel extension itself to be installed as follows:

    1. First, attempt to install the latest version of HAXM from the SDK Manager.
    2. In MacOS, go to System Preferences > Security and Privacy.

    If you see an alert that System software from developer «Intel Corporation Apps» was blocked from loading, click Allow:

    For more information and workarounds, see this Apple webpage and issue 62395878.

    Apply Changes

    This section describes known issues that are related to Apply Changes.

    Issue in Android Runtime throws error

    If you’re using a device that runs Android 8.0 or 8.1, you might encounter «VERIFICATION_ERROR» messages when trying to apply certain types of changes (especially if you’re using Kotlin). This message is caused by an issue with the Android Runtime that is fixed in Android 9.0 and higher. Although the issue causes Apply Changes to fail, you can still Run your app again to see your changes. However, we recommend that you upgrade the device to Android 9.0 or greater.

    Cannot apply changes when using android:sharedUserId

    If you try to make changes to a class that hasn’t yet been deployed to your running app, Apply Changes will fail if your app is configured in either of the following ways:

    • Your app shares data with another app using a shared android:sharedUserId .
    • Your app runs in the same process as another app using a shared android:sharedUserId and android:process .

    When Apply Changes fails due to this issue, Android Studio displays the following message:

    To work around this issue in Android Studio 3.5, click Run to re-deploy your app and see your changes.

    Note: This issue (#135172147) is fixed in Android Studio 3.6 Canary 6 and higher. If you have Android Studio set to receive updates on the Canary or Dev channel, you can get the latest version by choosing Help > Check for Updates (Android Studio > Check for Updates on macOS). Otherwise, you can download it from the Android Studio preview page.

    Debugging and testing

    This section describes known issues related to debugging and testing your app.

    JUnit tests missing resources in classpath when run from Android Studio

    If you have specific resource folders in your Java modules, then those resources won’t be found when running tests from the >check task from the IDE will also work. See issue 64887 for more details.

    This issue occurs because as of IntelliJ 13, which requires that you only have a single folder as the classpath. IntelliJ’s builder copies all resources into that build folder, but Gradle doesn’t copy over the resources.

    • Workaround 1: Run the Gradle check task from the IDE rather than running a unit test.
    • Workaround 2: Update your build script to manually copy resources into the build folder. See comment #13 for more information.

    Running JUnit tests may compile the code twice

    When creating a new project, the template JUnit configuration might be created with two «Before launch» steps: Make and Gradle-aware Make. This configuration is then propagated to all created JUnit run configurations.

    • To fix the issue for the current project, click Run > Edit Configurations and change the default JUnit configuration to only include the Gradle-aware Make step.
    • To fix the issue for all future projects, click File > Close Project. You should see the welcome screen. Then click Configure > Project Defaults > Run Configurations and change the JUnit configuration to only include the Gradle-aware Make step.


    Some test run configurations don’t work

    Not all run configurations that are available when right-clicking a test method are valid. Specifically, the following configurations are not valid:

    • Gradle run configurations (which have a Gradle logo as the icon) don’t work.
    • JUnit run configurations (which have an icon without the green Android) don’t apply to instrumentation tests, which cannot be run on the local JVM.

    Android Studio also remembers the run configuration created in a given context (for example, right-clicking a specific class or method), and will not offer to run in a different configuration in the future. To fix this, click Run > Edit Configurations and remove the incorrectly-created configurations.

    Adding Java breakpoints while debugging native code

    While your app is paused at a breakpoint in your native code, the Auto and Dual debuggers may not immediately recognize new Java breakpoints that you set. To avoid this issue, add Java breakpoints either before starting a debug session or while the app is paused on a Java breakpoint. For more information, see issue 229949.

    Stepping out of the native debugger

    While using the Auto or Dual debugger to debug Java and native code, if you step into a native function from your Java code (for example, the debugger pauses execution at a line in your Java code that calls a native function and you click Step Into ) and you want to return to your Java code, click Resume Program (instead of Step Out or Step Over ). Your app process will still be paused, so click Resume Program in the your-module -java tab to resume it. For more information, see issue 224385.

    Profilers

    This section describes known issues with the Profilers.

    ADB exception when debugging or profiling

    When using Platform Tools 29.0.3, native debugging and the Andro >idea.log file when you select Help > Show Log. Upgrading the Platform Tools to 29.0.4 or higher fixes both issues.

    To upgrade the Platform Tools, do the following:

      Open the SDK Manager from Android Studio by clicking Tools > SDK Manager or click SDK Manager in the toolbar.

    Click the checkbox next to Android SDK Platform-Tools so it shows a checkmark. A download icon should appear in the left column.

  • Click Apply or OK.
  • Known issues with the Android Gradle Plugin

    This section describes known issues that exist in the latest stable version of the Android Gradle plugin.

    Signing file named with Carriage Return (CR) characters

    JAR signing (v1 scheme) does not support file names containing Carriage Return (CR) characters. (See issue #63885809).

    API changes

    Android Gradle Plugin 3.0.0 and higher introduce API changes that remove certain functionalities and may break your existing builds. Later versions of the plugin may introduce new public APIs that replace broken functionalities.

    Modifying variant outputs at build time may not work

    Using the Variant API to manipulate variant outputs is broken with the new plugin. It still works for simple tasks, such as changing the APK name during build time, as shown below:

    However, more complicated tasks that involve accessing outputFile objects no longer work. That’s because variant-specific tasks are no longer created during the configuration stage. This results in the plugin not knowing all of its outputs up front, but it also means faster configuration times.

    manifestOutputFile is no longer available

    The processManifest.manifestOutputFile() method is no longer available, and you get the following error when you call it:

    Instead of calling manifestOutputFile() to get the manifest file for each variant, you can call processManifest.manifestOutputDirectory() to return the path of the directory that contains all generated manifests. You can then locate a manifest and apply your logic to it. The sample below dynamically changes the version code in the manifest:

    Fixed known issues

    This section describes known issues that have been fixed in a recent release. If you are experiencing any of these issues, you should update Android Studio to the latest stable or preview version.

    Fixed in Android Studio 3.6 Beta 1

    APK installation error on LineageOS: Deploying your app to devices running certain versions of LineageOS or CyanogenMod might fail and throw an INSTALL_PARSE_FAILED_NOT_APK exception.

    On Android Studio 3.6 Beta 1 and higher, the IDE handles this exception by performing a full app install when you deploy your app to LineageOS or CyanogenMod devices, which might result in longer deploy times.

    Fixed in Android Studio 3.5.2


    • Broken XML code style: When editing XML code, the IDE applied an incorrect code style when you selected Code > Reformat Code from the menu bar.

    Fixed in Android Studio 3.3.1

    Out of memory errors when scanning C++-based projects: When Gradle scans a project that has C++ code in more than one location on the same drive, the scan includes all directories below the first common directory. Scanning a large number of directories and files may lead to out of memory errors.

    For more information on this issue, read the bug associated with the issue.

    Content and code samples on this page are subject to the licenses described in the Content License. Java is a registered trademark of Oracle and/or its affiliates.

    OkHttp¶

    HTTP is the way modern applications network. It’s how we exchange data & media. Doing HTTP efficiently makes your stuff load faster and saves bandwidth.

    OkHttp is an HTTP client that’s efficient by default:

    • HTTP/2 support allows all requests to the same host to share a socket.
    • Connection pooling reduces request latency (if HTTP/2 isn’t available).
    • Transparent GZIP shrinks download sizes.
    • Response caching avoids the network completely for repeat requests.

    OkHttp perseveres when the network is troublesome: it will silently recover from common connection problems. If your service has multiple IP addresses OkHttp will attempt alternate addresses if the first connect fails. This is necessary for IPv4+IPv6 and services hosted in redundant data centers. OkHttp supports modern TLS features (TLS 1.3, ALPN, certificate pinning). It can be configured to fall back for broad connectivity.

    Using OkHttp is easy. Its request/response API is designed with fluent builders and immutability. It supports both synchronous blocking calls and async calls with callbacks.

    Get a URL¶

    This program downloads a URL and prints its contents as a string. Full source.

    Post to a Server¶

    This program posts data to a service. Full source.

    Further examples are on the OkHttp Recipes page.

    Requirements¶

    OkHttp works on Android 5.0+ (API level 21+) and on Java 8+.

    OkHttp depends on Okio for high-performance I/O and the Kotlin standard library. Both are small libraries with strong backward-compatibility.

    We highly recommend you keep OkHttp up-to-date. As with auto-updating web browsers, staying current with HTTPS clients is an important defense against potential security problems. We track the dynamic TLS ecosystem and adjust OkHttp to improve connectivity and security.

    OkHttp uses your platform’s built-in TLS implementation. On Java platforms OkHttp also supports Conscrypt, which integrates BoringSSL with Java. OkHttp will use Conscrypt if it is the first security provider:

    The OkHttp 3.12.x branch supports Android 2.3+ (API level 9+) and Java 7+. These platforms lack support for TLS 1.2 and should not be used. But because upgrading is difficult we will backport critical fixes to the 3.12.x branch through December 31, 2020.

    Releases¶

    Our change log has release history.

    Snapshot builds are available. R8 and ProGuard rules are available.

    MockWebServer¶

    OkHttp includes a library for testing HTTP, HTTPS, and HTTP/2 clients.

    OneSignal Push Notification Service Documentation

    OneSignal Help & Documentation

    Welcome to the OneSignal New IA developer hub. You’ll find comprehensive guides and documentation to help you start working with OneSignal New IA as quickly as possible, as well as support if you get stuck. Let’s jump right in!

    Search results for «<< search.query >>«

    Troubleshooting Andro >

    Common setup issues with Android and Amazon


    This means that Android Studio or Gradle could not download our plugin. Please check the following.
    1. Open your browser to http://search.maven.org/ to make sure it loads on your system.
    2. Make sure you’re using Android Studio version 1.4.0 or newer.
    3. Go to File > Settings .
    4. Search for Offline work and uncheck this option.

    4. Add the following to your .gradle file.

    5. Try restarting Android Studio and then going to Tools > Android > Sync Project With Gradle Files .

    If you are receiving the following Android Studio error when building your project

    Remove the following line from your .gradle file.

    This error means you added plugins < . >to the wrong spot in your app/build.gradle . You must have the following 3 lines at the very top of your file. Double check you don’t have duplicated lines as well.

    Could not find class errors are expected in the logcat for Android devices before 5.0. It is just letting you know it could not find these classes as your app loads into memory. It does not cause any issues in your app as the calls are guarded with runtime checks so they won’t create any issues.

    Please use one of the Options below to resolve the issue;

    Add the new Google Maven repo to your build.gradle

    Also update compileSdkVersion to 26 in your app/build.gradle .

    If you are not ready to update your project to the new support library yet and are still using targetSdkVersion 25 or lower you can follow Option A or C in the section’s instructions.

    OneSignal automatically adds the following dependencies;

    • com.google.android.gms — Version 11.2.+
    • com.android.support — Version 26.1.+

    To fix this issue, all dependencies must be matching versions.

    Upgrade — Find all com.google.android.gms compile lines and update them to match.

    Downgrade — Force OneSignal’s dependencies to a lower version.

    If you see that some obfuscated Firebase or Google GMS methods are missing, it is most probably a dependency versioning conflict.

    You can use the gradle dependencies and gradle dependencyInsight directives to troubleshoot which libraries are causing classes/methods to go missing. Refer to the official Gradle documentation for more information:

    If you see the following error make sure you have completed step 1.2 correctly.

    Make sure you added the code from step 1.1 of the Android Setup to the very top of the build.gradle file. This should be the first line of code in the file.

    Please follow our No users on dashboard guide first.

    Make sure you have your Application in your AndroidManifest.xml and add logging around OneSignal to make sure it is being called.
    Make sure you have andro .

    1. Make sure you have onesignal_app_id in your build.gradle and your id is correct.
    1. Make sure you are not replacing the tag in your AndroidManifest.xml with tools:node=»replace»

    If you must replace some attributes please use tools:replace instead tools:node .
    Example: tools:replace=»icon, label»

    OneSignal automatically includes the following dependencies;

    • com.google.android.gms — Version 11.2.+
    • com.android.support — Version 26.1.+

    Since these are commonly used by other SDKs you may run into issues due to conflicting versions. Add the OneSignal-Gradle-Plugin to your project which will automatically resolve any conflicts.

    1. Open your app/build.gradle (Module: app) file, add the following to the top.

    In Android Studio open build.gradle (Module: app) and make sure you are using the latest OneSignal SDK under dependencies.

    1. Select Android Monitor from the bottom of the window.
    ——If you don’t see this select it from View > Tool Windows > Android Monitor
    2. Select your device from the drop down.
    3. Ensure no filters are set and the type is set to Verbose.

    4. Select all lines in the log by pressing Control + A and then copy them.
    5. Paste them into a .txt file and send this to support. Include steps to reproduce the problem as well.

    1. adb logcat -b all -d -v threadtime > onesignal_crash_logcat.txt
    2. Send the onesignal_crash_logcat.txt to support. Include steps to reproduce the problem as well.

    If you don’t have adb in your path you will need to fully path to adb in the Android SDK. It is under \platform-tools\adb .
    If you don’t have the Android SDK installed you can just download the SDK Platform Tools which contains the adb executable.

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