MediaSessionCompat：面向 S+（版本 31 及更高版本）要求在创建 PendingIntent 时指定 FLAG_IMMUTABLE 或 FLAG_MUTABLE 之一

我正在尝试将我的应用程序更新到 Android SDK 31，但我遇到了 MediaSessionCompat 问题。

我有一个扩展 MediaBrowserServiceCompat() 的 MediaService，并在该服务的 onCreate 方法中初始化 MediaSessionCompat。

override fun onCreate() {
  super.onCreate()
  mediaSession = MediaSessionCompat(this, TAG).apply {
    setCallback(mediaSessionCallback)
    isActive = true
  }
...

但我有以下错误

java.lang.RuntimeException: Unable to create service com.radio.core.service.MediaService: java.lang.IllegalArgumentException: com.xxx.xxx: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.
    Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles.
        at android.app.ActivityThread.handleCreateService(ActivityThread.java:4498)
        at android.app.ActivityThread.access$1500(ActivityThread.java:250)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2064)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7829)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:982)
     Caused by: java.lang.IllegalArgumentException: com.xxx.xxx: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.
    Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles.
        at android.app.PendingIntent.checkFlags(PendingIntent.java:375)
        at android.app.PendingIntent.getBroadcastAsUser(PendingIntent.java:645)
        at android.app.PendingIntent.getBroadcast(PendingIntent.java:632)
        at android.support.v4.media.session.MediaSessionCompat.<init>(MediaSessionCompat.java:567)
        at android.support.v4.media.session.MediaSessionCompat.<init>(MediaSessionCompat.java:537)
        at android.support.v4.media.session.MediaSessionCompat.<init>(MediaSessionCompat.java:501)
        at android.support.v4.media.session.MediaSessionCompat.<init>(MediaSessionCompat.java:475)
        at com.radio.core.service.MediaService.onCreate(MediaService.kt:63)
        at android.app.ActivityThread.handleCreateService(ActivityThread.java:4485)
            ... 9 more

我正在使用最新版本的媒体库（“androidx.media:media:1.4.0”），它能够处理 Andriod“S”的这一要求。正如在 MediaSessionCompact.java 中可以看到的那样班级。

// TODO(b/182513352): Use PendingIntent.FLAG_MUTABLE instead from S.
/**
 * @hide
 */
@RestrictTo(LIBRARY)
public static final int PENDING_INTENT_FLAG_MUTABLE = 
  Build.VERSION.CODENAME.equals("S") ? 0x02000000 : 0;

...

if (mbrComponent != null && mbrIntent == null) {
  // construct a PendingIntent for the media button
  Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
  // the associated intent will be handled by the component being registered
  mediaButtonIntent.setComponent(mbrComponent);
  mbrIntent = PendingIntent.getBroadcast(context,
    0/* requestCode, ignored */, mediaButtonIntent,
    PENDING_INTENT_FLAG_MUTABLE);
}

演示问题的源代码 -https://github.com/adelinolobao/issue-media-session-compat https://github.com/adelinolobao/issue-media-session-compat

你们知道我该如何修复这个错误吗？

如果您不使用PendingIntent任何地方。通过添加或更新此依赖项可以解决该问题

    // required to avoid crash on Android 12 API 31
    implementation 'androidx.work:work-runtime-ktx:2.7.1'

这解决了我的问题。

你可以执行./gradlew app:dependencies在项目的终端中，发现什么依赖项包括工作运行时和旧版本。然后您可以尝试升级该依赖项以努力做正确的事情