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사용자가 초를 입력하고 버튼을 누르면 화면이 꺼지고 타이머가 시작되는 응용 프로그램이 있습니다 (입력 된 초 수와 함께). 화면이 켜지고 타이머가 끝난 후에 만 서비스가 중지됩니다.서비스를 통해 UI 업데이트를 중지하는 방법은 무엇입니까?
이제 타이머가 끝나면 TextView를 변경해야합니다. 현재, MainService에서 변수를 (counterr; MainService에서 보시오.) 5 초 후에 계속 증가 시키지만 (mainService에서 "sendUpdatesToUI"함수 참조), 변수가 한 번만 증가하고 서비스가 중단 된 후에 만 변수를 증가 시키길 원합니다.
아이디어는 어떻게됩니까?
MainActivity :
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText timer = (EditText) findViewById(R.id.insertTimer);
findViewById(R.id.startApp).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, MainService.class);
intent.putExtra("timer", timer.getText().toString());
registerReceiver(broadcastReceiver, new IntentFilter(MainService.BROADCAST_ACTION));
Toast.makeText(MainActivity.this, "Countdown, Started", Toast.LENGTH_SHORT).show();
Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_OFF_TIMEOUT, 1000);
startService(intent);
}
});
}
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
updateUI(intent);
}
};
private void updateUI(Intent intent) {
String counter = intent.getStringExtra("counter");
TextView txtCounter = (TextView) findViewById(R.id.txtCounter);
txtCounter.setText(counter);
}
}
MainService :
public class MainService extends Service {
public static final String BROADCAST_ACTION = "package com.example.vladpintea.friendsbeforecents.displayevent";
private final Handler handler = new Handler();
Intent intent;
int counterr = 0;
String usedTimer;
long interval;
//TimerTask that will cause the run() runnable to happen.
TimerTask myTask = new TimerTask() {
public void run() {
stopSelf();
}
};
//Timer that will make the runnable run.
Timer myTimer = new Timer();
private boolean isRunning = false;
@Override
public void onCreate() {
intent = new Intent(BROADCAST_ACTION);
registerReceiver(counter, new IntentFilter(Intent.ACTION_SCREEN_ON));
Toast.makeText(MainService.this, "Service, Created", Toast.LENGTH_SHORT).show();
isRunning = true;
}
private BroadcastReceiver counter = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(MainService.this, "Whoops! You've Lost.", Toast.LENGTH_SHORT).show();
Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_OFF_TIMEOUT, 30000);
}
};
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
usedTimer = intent.getStringExtra("timer");
try {
interval = Long.parseLong(usedTimer);
} catch (NumberFormatException nfe) {
}
handler.removeCallbacks(sendUpdatesToUI);
handler.postDelayed(sendUpdatesToUI, 1000); // 1 second
Toast.makeText(MainService.this, "Service, Started", Toast.LENGTH_SHORT).show();
myTimer.schedule(myTask, interval);
return super.onStartCommand(intent, flags, startId);
}
private Runnable sendUpdatesToUI = new Runnable() {
public void run() {
DisplayLoggingInfo();
handler.postDelayed(this, 5000);
}
};
private void DisplayLoggingInfo() {
intent.putExtra("counter", String.valueOf(++counterr));
sendBroadcast(intent);
}
@Override
public void onDestroy() {
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK
| PowerManager.ACQUIRE_CAUSES_WAKEUP
| PowerManager.ON_AFTER_RELEASE, "MyWakeLock");
wakeLock.acquire();
Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_OFF_TIMEOUT, 30000);
android.os.Process.killProcess(android.os.Process.myPid());
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
감사합니다. 매력처럼 일했습니다. –