Android 在应用程序关闭时继续服务工作
我有一个简单的服务Android 在应用程序关闭时继续服务工作,android,android-service,Android,Android Service,我有一个简单的服务 public class UpdateService extends Service { private int seconds; final static String MY_ACTION = "MY_ACTION"; @Override public void onCreate() { super.onCreate(); } @Override public void onStart(Intent intent, int startId) {
public class UpdateService extends Service {
private int seconds;
final static String MY_ACTION = "MY_ACTION";
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onStart(Intent intent, int startId) {
timer.start();
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
final CountDownTimer timer = new CountDownTimer(86400000, 1000) {
public void onTick(long millisUntilFinished) {
Util.saveInfo(getApplicationContext(), Util.SECONDS, seconds++);
Intent intent = new Intent();
intent.setAction(MY_ACTION);
sendBroadcast(intent);
}
public void onFinish() { }
};
}
当我关闭应用程序时,服务停止工作。但是显示服务正在运行
我做错了什么
更新我将倒计时改为线程,但问题仍然存在
Thread t1 = new Thread(new Runnable() {
@Override
public void run() {
while (true) {
Util.saveInfo(getApplicationContext(), Util.SECONDS, seconds++);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
});
OnStart()
因为
倒计时定时器
仅在前台工作,这意味着应用程序正在运行,并且没有最小化或关闭。您必须在服务
中放置一个线程
,该线程在您想要的特定时间执行
试试这个:
public class LocalService extends Service
{
private static Timer timer = new Timer();
private Context ctx;
public IBinder onBind(Intent arg0)
{
return null;
}
public void onCreate()
{
super.onCreate();
ctx = this;
startService();
}
private void startService()
{
timer.scheduleAtFixedRate(new mainTask(), 0, 5000);
}
private class mainTask extends TimerTask
{
public void run()
{
toastHandler.sendEmptyMessage(0);
}
}
public void onDestroy()
{
super.onDestroy();
Toast.makeText(this, "Service Stopped ...", Toast.LENGTH_SHORT).show();
}
private final Handler toastHandler = new Handler()
{
@Override
public void handleMessage(Message msg)
{
System.out.println("test");
}
};
}
我更新了我的帖子。顺便说一句,当应用程序最小化时,倒计时计时器工作。是的。但是我必须做什么呢?如何在后台制作工作计时器?关闭应用程序后停止写入“测试”表示日志中的测试未打印,ondestroy是否调用服务。打印测试,但关闭后停止。未调用onDestroy()
public class LocalService extends Service
{
private static Timer timer = new Timer();
private Context ctx;
public IBinder onBind(Intent arg0)
{
return null;
}
public void onCreate()
{
super.onCreate();
ctx = this;
startService();
}
private void startService()
{
timer.scheduleAtFixedRate(new mainTask(), 0, 5000);
}
private class mainTask extends TimerTask
{
public void run()
{
toastHandler.sendEmptyMessage(0);
}
}
public void onDestroy()
{
super.onDestroy();
Toast.makeText(this, "Service Stopped ...", Toast.LENGTH_SHORT).show();
}
private final Handler toastHandler = new Handler()
{
@Override
public void handleMessage(Message msg)
{
System.out.println("test");
}
};
}