小编tho*_*ogh的帖子

当我设置的闹钟激活时,我想打开显示屏,解锁手机并将我的应用程序带到前面.

public class CountDownAlarm extends BroadcastReceiver {

    public CountDownAlarm(){ }

    public CountDownAlarm(Context context, int timeoutInSeconds){
        AlarmManager alarmMgr = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
        Intent intent = new Intent(context, CountDownAlarm.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        Calendar time = Calendar.getInstance();
        time.setTimeInMillis(System.currentTimeMillis());
        time.add(Calendar.SECOND, timeoutInSeconds);
        alarmMgr.set(AlarmManager.RTC_WAKEUP, time.getTimeInMillis(), pendingIntent);
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE); 
        WakeLock wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP, "TRAININGCOUNTDOWN"); 
        wl.acquire(); 
        Intent i = new Intent(context, MyActivity.class); 
        i.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT); 
        context.startActivity(i); 
        wl.release(); 
    }
}

来自我的CountDownTimer的振动器被激活,但显示器没有打开...

public class MyActivity extends Activity implements OnClickListener …

是否可以在不使用服务器和没有wifi或蓝牙的情况下通过移动网络将数据直接从一个设备推送到另一个设备？

(两者都安装了相同的应用程序.)

怎么样？:)

是否可以在没有用户干预的情况下从ADB启动蓝牙？我试过了:

am start -a android.bluetooth.adapter.action.REQUEST_ENABLE

但这需要用户按OK.和:

service call bluetooth 3

什么都不做 在init.rc中启用蓝牙服务也不起作用.

service bluetoothd /system/bin/bluetoothd -n
    class main
    socket bluetooth stream 660 bluetooth bluetooth
    socket dbus_bluetooth stream 660 bluetooth bluetooth
    # init.rc does not yet support applying capabilities, so run as root and
    # let bluetoothd drop uid to bluetooth with the right linux capabilities
    group bluetooth net_bt_admin misc
    enabled

而且我更喜欢亚行的命令.(如果有人想知道我需要它用于FCC测试.)

是否有可能获得TextView能够显示的行数？我想将它用作日志视图,在底部添加新行并从顶部删除最旧的行...