I think you should, when the Activity
picture is displayed, try to call the onBackPressed
method.
// back button pressed method
@Override
public void onBackPressed() {
super.onBackPressed();
// new intent to call an activity that you choose
Intent intent = new Intent(this, NewActivity.class);
startActivity(intent);
// finish the activity picture
this.finish();
}
If you don't want to call an external Activity
, you can hide the layout calling by the Intent
as below:
// back button pressed method
@Override
public void onBackPressed() {
super.onBackPressed();
// your layout with the picture is displayed, hide it
if(MySecondView.getVisibility() == View.VISIBLE)
MySecondView.setVisibility(View.Gone);
// display the layout that you want
MyDefaultView.setVisibility(View.VISIBLE);
}
As I said below, try with a boolean that you initialize to false at the beginning of your Class
. When you start the Intent.ACTION_VIEW
, make this boolean to true:
public class Foo extends Activity {
private boolean isSms = false;
// some stuff
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setType("vnd.android-dir/mms-sms");
// ...
startActivity(intent);
// make your boolean to true
isSms = true;
// create the onBackPressed method
@Override
public void onBackPressed() {
// check if the user is on the sms layout
if(isSms)
// do something
else
// do something else like finish(); your activity
}
}
Or you can try to use the onKeyDown
method (see here: onKeyDown (int keyCode, KeyEvent event)) as below:
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode==KeyEvent.KEYCODE_BACK && event.getRepeatCount()==0) {
// dome some stuff
return true;
}
return super.onKeyDown(keyCode, event);
}
You can see the diffence between these two methods here: onBackPressed() not working and on the website that I talk in the comments below.
Hope this will be useful.
UPDATE:
A better way should make an startActivityForResult to start the Intent.ACTION_VIEW:
startActivityForResult(intent, 1);
And then, you return the cancel code like this:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode != 1 && resultCode == RESULT_CANCELED) {
// do something
}
}
This is @FunkTheMonk, just above, who tells the good choice!