Targeting S+（API31+）创建PendingIntent已加FLAG仍报错求助

错误日志 #

Exception java.lang.IllegalArgumentException: se.sensoralarm: 针对S+（版本31及以上）开发时，创建PendingIntent必须指定FLAG_IMMUTABLE或FLAG_MUTABLE其中一个标记。
强烈建议使用FLAG_IMMUTABLE，仅当某些功能依赖PendingIntent的可变性时才使用FLAG_MUTABLE，例如需要与内联回复或气泡功能配合使用的场景。
  at android.app.PendingIntent.checkFlags (PendingIntent.java:408)
  at android.app.PendingIntent.getActivityAsUser (PendingIntent.java:491)
  at android.app.PendingIntent.getActivity (PendingIntent.java:477)
  at android.app.PendingIntent.getActivity (PendingIntent.java:441)
  at com.google.firebase.messaging.zza.zzh
  at com.google.firebase.messaging.FirebaseMessagingService.zzd
  at com.google.firebase.iid.zzg.run
  at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1137)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:637)
  at com.google.android.gms.common.util.concurrent.zza.run (com.google.android.gms:play-services-basement@@18.1.0:2)
  at java.lang.Thread.run (Thread.java:1012)

自定义通知实现代码 #

PendingIntent pendingIntent = PendingIntent.getActivity(this,
        0, new Intent(getApplicationContext(), SplashScreenActivity.class), PendingIntent.FLAG_IMMUTABLE|PendingIntent.FLAG_UPDATE_CURRENT);


Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
        .setSmallIcon(R.drawable.notification)
        .setContentTitle(title)
        .setContentText(messageBody)
        .setAutoCancel(true)
        .setSound(defaultSoundUri)
        .setContentIntent(pendingIntent);

NotificationManager notificationManager =
        (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

notificationManager.notify(0, notificationBuilder.build());

项目配置信息 #

build.gradle基础配置 #

compileSdkVersion 32
buildToolsVersion "30.0.3"
defaultConfig {
    applicationId "se.sensoralarm"
    minSdkVersion 23
    targetSdkVersion 32
    versionCode 32
    versionName "1.2.12"
    testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
}

依赖配置 #

implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'com.google.android.gms:play-services-location:15.0.1'
implementation 'com.google.android.play:core:1.10.2'
testImplementation fileTree(dir: 'libs', include: ['*.jar'])
androidTestImplementation('androidx.test.espresso:espresso-core:3.1.0', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
implementation 'androidx.work:work-runtime:2.8.1'
implementation 'androidx.work:work-runtime-ktx:2.8.1'
implementation 'androidx.appcompat:appcompat:1.0.0'
implementation 'com.google.android.material:material:1.0.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'androidx.exifinterface:exifinterface:1.0.0'
implementation 'com.squareup.okhttp3:okhttp:4.9.0'
implementation 'com.google.code.gson:gson:2.8.2'
implementation 'com.aurelhubert:ahbottomnavigation:2.1.0'
implementation 'com.squareup.picasso:picasso:2.5.2'
implementation 'com.github.chrisbanes:PhotoView:2.1.3'
implementation 'com.jakewharton.threetenabp:threetenabp:1.1.0'
implementation 'com.google.firebase:firebase-core:21.1.1'
implementation 'com.google.firebase:firebase-messaging:17.3.4'
implementation 'com.jakewharton:butterknife:10.2.3'
implementation 'org.florescu.android.rangeseekbar:rangeseekbar-library:0.3.0'
implementation 'com.github.lukedeighton:wheelview:0.4.2'
implementation 'org.florescu.android.rangeseekbar:rangeseekbar-library:0.3.0'
implementation 'com.intuit.ssp:ssp-android:1.0.6'
implementation 'com.intuit.sdp:sdp-android:1.0.6'
implementation 'com.google.firebase:firebase-crashlytics:18.3.7'
implementation 'com.google.firebase:firebase-analytics:21.2.0'
implementation("com.google.android.gms:play-services-base:18.1.0")
annotationProcessor 'com.jakewharton:butterknife-compiler:10.2.3'
testImplementation 'junit:junit:4.12'

问题分析与解决办法 #

从错误栈能明显看出，报错的PendingIntent并非来自你自定义的通知代码，而是Firebase Messaging内部创建的实例。你当前使用的firebase-messaging版本是17.3.4，这个版本发布于2019年，早于Android 12（API31）的推出，因此它内部创建PendingIntent时没有添加S+设备要求的FLAG_IMMUTABLE或FLAG_MUTABLE标记，导致触发错误。

解决步骤： #

1. 升级Firebase Messaging依赖版本：将com.google.firebase:firebase-messaging升级到适配API31+的版本，建议至少升级到23.0.0及以上（该版本开始支持Android 12的PendingIntent标记要求）。示例修改：

   implementation 'com.google.firebase:firebase-messaging:23.0.0'
   

   同时建议统一Firebase相关依赖版本，避免冲突，比如可移除firebase-core依赖（当前Firebase已用firebase-analytics替代firebase-core功能）。

2. 同步并清理项目：修改依赖后，执行File -> Sync Project with Gradle Files，再通过Build -> Clean Project清理项目，最后重新构建确保新依赖生效。

3. 排查其他潜在问题：如果升级后仍报错，检查是否有其他第三方库存在类似未适配API31+的情况，但从当前错误栈来看，核心问题就是Firebase Messaging版本过低。

内容的提问来源于stack exchange，提问作者Kanwarpreet Singh