BackButton calls previous activity

Question

Use of this code I call Next Activity.

Code

public void click_contact(View v)
{
 Intent myIntent = new Intent(MainActivity.this, ContactActivity.class);
 MainActivity.this.startActivity(myIntent);
 overridePendingTransition (R.anim.slide_in_right, R.anim.slide_out_left);
 finish();
}

So 'ContactActivity' is lunched. when the built-in "back" button from my device is pressed,the previous activity ('MainActivity') is closed. But I want relaunch this activity.

Answer 1

If you want restore your MainActivity then you should remove finish() from your code. Code

public void click_contact(View v)
{
    Intent myIntent = new Intent(MainActivity.this, ContactActivity.class);
    MainActivity.this.startActivity(myIntent);
    overridePendingTransition (R.anim.slide_in_right, R.anim.slide_out_left);
}

If you want restart MainActivity on back in ContactActivity then you should start it in onBackPressed():

Code

@Override
public void onBackPressed() 
{
    Intent myIntent = new Intent(ContactActivity.this, MainActivity.class);
    startActivity(myIntent);
    super.onBackPressed();
}