Android: open activity without save into the stack
AndroidBack StackAndroid Problem Overview
I have 2 activities: Main and List.
From Main you can open List; from List you can open Main.
I'd like it so that every opening of List does not get saved into the 'history'. So, pressing back from Main cannot return to List.
Is it possible?
Android Solutions
Solution 1 - Android
When starting your list's Activity
, set its Intent
flags like so:
Intent i = new Intent(...); // Your list's Intent
i.setFlags(i.getFlags() | Intent.FLAG_ACTIVITY_NO_HISTORY); // Adds the FLAG_ACTIVITY_NO_HISTORY flag
startActivity(i);
The FLAG_ACTIVITY_NO_HISTORY
flag keeps the new Activity
from being added to the history stack.
NB: As @Sam points out, you can use i.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
instead. There is no functional difference.
Solution 2 - Android
In the manifest file add:
android:noHistory="true"
to the activity that you don't want to keep on the stack.
Solution 3 - Android
Use the new task with clearing. This worked in my case when the other options didnt.
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
Solution 4 - Android
It seems, if you call finish() on your activity right after you have opened another, the one that is finished is removed from the stack.
for example:
Intent intent = new Intent(this, NextActivity.class);
startActivity(intent);
finish();
Solution 5 - Android
In my particular case FLAG_ACTIVITY_NO_HISTORY
did not work. Neither did FLAG_ACTIVITY_NEW_TASK
or FLAG_ACTIVITY_CLEAR_TASK
alone by themselves work.
However FLAG_ACTIVITY_NEW_TASK
and FLAG_ACTIVITY_CLEAR_TASK
together did work.
Intent intent = new Intent(FooActivity.this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
Solution 6 - Android
Late answer, but adds some depth to other answers. It all comes down to what do you want to happen with other activities started from that activity
Option 1 - Just this one activity should not have history of calling activity
Then just do:
Intent i = new Intent(...);
i.addFlag(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(i);
Option 2 - All activities started from that specific activity should not have history
Then add in manifest of the calling activity:
android:noHistory="true"
But if you do want to have history in new activity, then you have to manually remove the flag:
Intent i = new Intent(...);
i.removeFlag(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(i);
Hope that clears up other answers :)
Solution 7 - Android
Just wanted to add a way to do this in Kotlin:
val i = Intent(this, LogInActivity::class.java)
startActivity(i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK))
Solution 8 - Android
Try FLAG_ACTIVITY_CLEAR_TOP if the activity is already running:
Intent intent = new Intent(this, MyActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
Solution 9 - Android
add the flag FLAG_ACTIVITY_NEW_TASK
to your Intent
http://developer.android.com/reference/android/content/Intent.html#FLAG_ACTIVITY_NEW_TASK
Solution 10 - Android
case : 1
use this flag
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
in this case activity transition no smoothly working blank white page before going startactvity
cas 2 :
Intent intent = new Intent(this, NextActivity.class);
startActivity(intent);
finish();
If your phone is no so fast you'll see as previous activity is moving off , I hope to days most off the device will take care of this
Solution 11 - Android
Can you not override the back button on the particular activity to stop the 'return' functionality?
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
return true;
}
return super.onKeyDown(keyCode, event);
}