bring running process to foreground or disable multiple instances of application

问题

im new to android

i have an application that running in the background using moveTaskToBack(true); method

the problem is if user clicked on the application icon it will run another process, not just bring the running one to foreground

how can i solve this???

Example:

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

int delay = 10000;// in ms
Timer timer = new Timer();
timer.schedule(new TimerTask() {
public void run() {
AudioManager audio = ((AudioManager) getSystemService(AUDIO_SERVICE));
    audio.setRingerMode(AudioManager.RINGER_MODE_VIBRATE);
moveTaskToBack(true);
}, delay);
}

i tried this

<activity android:name=".LaunchActivity" android:label="@string/app_name"
    android:launchMode="singleInstance"
    >
lanchmode=singleinstance

but it didnt work!!

any help?

回答1:

To make the activity not have multiple instances use the activity launchMode parameter in your Manifest. Set it to singleInstance or singleTask.

来源：https://stackoverflow.com/questions/7355783/bring-running-process-to-foreground-or-disable-multiple-instances-of-application