Some times we don't want to open activities after pressing back button, examples Splash Screen Activity, Welcome Screen Activity, We don’t need these activities in activity stack. Manifest file <activity Some times we want to close entire application on back press @override or we can do by public void onBackPressed() {
we can remove it from activity stack by below ways
android:noHistory="true"
android:name="com.example.activity"
android:label=""
android:noHistory="true">
</activity>
just place this code in onBackPressed method
public void onBackPressed(){
Intent a = new Intent(Intent.ACTION_MAIN);
a.addCategory(Intent.CATEGORY_HOME);
a.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(a);
}
finish();
}
What happens next when the device switches between portrait and landscape?
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