How to finish an android application?

Question

I need to finish an android application. For that i wrote

@Override
public void onBackPressed() {
    AlertDialog.Builder builder = new AlertDialog.Builder(         


        

Answer 1

according to this answer,

just write this.finishAffinity(); and done!

Answer 2

Shameless copy of NeTeInStEiN's answer as I found it so useful (please up-vote his answer): Sending a running application to background programmatically

You can use either:

boolean sentAppToBackground = moveTaskToBack(true);

if(!sentAppToBackground){
  Intent i = new Intent();
  i.setAction(Intent.ACTION_MAIN);
  i.addCategory(Intent.CATEGORY_HOME);
  this.startActivity(i);
}

More information here: http://developer.android.com/reference/android/app/Activity.html#moveTaskToBack(boolean)

Or simply:

Intent i = new Intent();
i.setAction(Intent.ACTION_MAIN);
i.addCategory(Intent.CATEGORY_HOME);
this.startActivity(i);

According to Romain Guy a Android Framework Engineer, "You cannot simulate a press on the Home key.". So beware...

Check: http://osdir.com/ml/Android-Developers/2010-03/msg01887.html

Updated this answer according to: moveTaskToBack(true) returns false always

Answer 3

Please read first this post from Google Android Developer Advocate Reto Meier : When to Include an Exit Button in Android Apps (Hint: Never)

What is th symptom that make you want to add an exit button ? If you need to clear the activity stack and always restart with a specific Activity, maybe you just have to tweak your activity manifest declaration with attributes like : android:clearTaskOnLaunch

Answer 4

whenever you are starting a new activity use

myintent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(myintent);

and in manifest file mention that activity as

<activity android:name=".<Activity Name>" >
        <intent-filter>
        <action android:name="android.intent.action.VIEW"/>
     <category android:name="android.intent.category.DEFAULT" />
     </intent-filter>
       </activity>

Answer 5

Put this into your onClick or in onBackPressed:

moveTaskToBack(true);
finish()

Answer 6

To close application just call:

android.os.Process.killProcess(android.os.Process.myPid());

Otherwise due-to specific life-cycling of Android activities you can't be sure that application is closed/killed.