Question

我目前正在尝试使用AlarmManager调用BroadCastReceiver来在一定时间内输出通知！在Android SDK Level 19+上我的方法有效，但在Android 17上我的方法一无所获！

没有输出错误，Android Studio的显示器中也没有任何日志。 AlarmManager几乎不会调用BroadcastReceiver。

MainActivity.java

plo = newdat$distance-cmult*sqrt(pvar1)

NotificationPublisher.java

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button mButton = (Button) findViewById(R.id.btn);
        mButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                setNotification();
            }
        });
    }

    public void setNotification() {
        Intent resultIntent = new Intent(this, NotificationPublisher.class);

        resultIntent.setData(Uri.parse("notification://1995-" + System.currentTimeMillis()));

        AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);

        PendingIntent resultPendingIntent =
            PendingIntent.getBroadcast(
                    this,
                    1995,
                    resultIntent,
                    PendingIntent.FLAG_UPDATE_CURRENT
            );

        alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 30 * 1000, resultPendingIntent);
        Log.d("Test", "Alarm started");
    }
}

AndroidManifext.xml

public class NotificationPublisher extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(context, "What", Toast.LENGTH_SHORT).show();
    }
}

Min SDK：17 目标：23

编辑：我用“adb shell dumpsys alarm”查看了AlarmManager：警报由应用程序创建，但警报的“when”变量从+30秒倒计时到无限负数！

| Android 17 | AlarmManager无法启动BroadcastReceiver

0 个答案: