CWAC LocationPoller在按下主页按钮后关闭

Question

我正在运行cwac locpoll的演示示例。这意味着每分钟都要在LocationLog.txt文件中记录我的位置。只要应用程序在屏幕上，它就可以正常工作，但如果我按下主页按钮，它就会停止日志记录，当我返回应用程序时，它会再次重新加载。当我在屏幕上运行时锁定屏幕时，也发生了同样的事情，但我强迫应用程序停止睡眠：

    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);

然而，这并没有解决我在设备上运行其他应用程序时在后台运行的问题。我使用的设备是华为Honor 7

我的MainActivity的整个代码如下：

public class MainActivity extends AppCompatActivity {
private static final int PERIOD= 1000 * 60 * 1;  // 1 minute
private PendingIntent pi=null;
private AlarmManager mgr=null;
PowerManager pm;
PowerManager.WakeLock wl;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    final TextView test = (TextView) findViewById(R.id.testTV);
    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
    mgr=(AlarmManager)getSystemService(ALARM_SERVICE);
    Intent i=new Intent(this, LocationPoller.class);
    i.putExtra(LocationPoller.EXTRA_INTENT,
            new Intent(this, LocationReceiver.class));
    i.putExtra(LocationPoller.EXTRA_PROVIDER,
            LocationManager.GPS_PROVIDER);
    pi=PendingIntent.getBroadcast(this, 0, i, 0);
    mgr.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
            SystemClock.elapsedRealtime(),
            PERIOD,
            pi);
    Toast
            .makeText(this,
                    "Location polling every 1 minutes begun",
                    Toast.LENGTH_LONG)
            .show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

}

Answer 1

解决我的问题很容易。在您的设置中搜索安全应用程序，找到您的应用程序并将其标记为安全应用程序。它允许您的应用程序在后台运行。否则，华为的任务管理器将继续杀死它。