在 android 10 上使用 startForeground 调用后应用程序崩溃

Question

我正在使用我在 android 8 上编写的应用程序，没有任何问题。这个应用程序使用后台服务来读取 GPS 坐标、处理它们并执行一些逻辑。我正在尝试将它移动到 android 10 并相应地更改 gradle 设置，但我在调用“startForeground”后立即崩溃（在设备 galaxy s20 上测试它） - 这是服务 onCreate 代码：

public class ScanService extends Service {

    @Override
    public void onCreate() {
        List<UserLocationManager> locationsManagers = GetLocationsManagers();
        _locListener = new MyLocationListener(locationsManagers);
        _locManager = (LocationManager)getApplicationContext().getSystemService(Context.LOCATION_SERVICE);

        Intent notificationIntent = new Intent(this, MainActivity.class);

        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
                notificationIntent, 0);
        Notification notification = new Notification.Builder(this, "lsxChannel")
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle("Location Trigger")
                .setContentText("Scanning Location...")
                .setContentIntent(pendingIntent).build();
        startForegroundService(notificationIntent);
        startForeground(1337, notification);    // after this one the app crashes
}

我在清单中有权限：

<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />

如果我评论“startForeground(1337, notification);”行 - 应用程序没有崩溃，所以我确定这是导致问题的行。

崩溃期间的 logcat 输出是：

2020-11-15 17:27:06.190 17455-17455/com.tandenkore.locationtrigger D/AndroidRuntime: Shutting down VM
2020-11-15 17:27:06.192 17455-17455/com.tandenkore.locationtrigger E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.tandenkore.locationtrigger, PID: 17455
    android.app.RemoteServiceException: Bad notification for startForeground
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2188)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:237)
        at android.app.ActivityThread.main(ActivityThread.java:8154)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100)
2020-11-15 17:27:06.195 6449-8919/? W/ActivityManager: crash : com.tandenkore.locationtrigger,0
2020-11-15 17:27:06.199 17455-17455/com.tandenkore.locationtrigger I/Process: Sending signal. PID: 17455 SIG: 9
2020-11-15 17:27:06.218 6449-6785/? W/InputDispatcher: channel '83d46a2 com.tandenkore.locationtrigger/com.tandenkore.locationtrigger.Activities.MainActivity (server)' ~ Consumer closed input channel or an error occurred.  events=0x9, fd=599
2020-11-15 17:27:06.218 6449-6785/? E/InputDispatcher: channel '83d46a2 com.tandenkore.locationtrigger/com.tandenkore.locationtrigger.Activities.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!

Answer 1

好的 - 发现问题 - 似乎 android 10 需要创建通知渠道 - 参考来自 https://ask.xiaolee.net/questions/1065268

现在工作。

在 android 10 上使用 startForeground 调用后应用程序崩溃

app crash after using startForeground call on android 10

android

background-service