android – Button to go back to MainActivity-ThrowExceptions

Exception or error:

I want to create a button that would lead the user straight back to main activity which doesn’t have the android name=”com.example.example”.
It has android.intent.etc…
How can I reference my button to go back to this activity?

How to solve:

Lets say your main activity is called Main.java.

btnBack.setOnClickListener(new OnClickListener(){

  private void onClick(){
    Intent intent = new Intent(currentActivity.this, Main.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);   
    startActivity(intent);
  }
});

###

use startActivity(intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP));

###

Sometimes you can just call activity.finish() to end current activity, so the main (first created) activity will pop out.

If this is not your case, do this:

Intent intent = new Intent(getApplicationContext(), Main.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)             
startActivity(intent);

###

Intent intent = new Intent(this, Main.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        startActivity(intent);

###

Well from wherever you are just call startActivity() with the required parameters inside the buttons onClick method. That’s it.

###

public void onBackPressed(){
    finish();
}

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