Java how to stop activity from another activity

To stop an activity from another activity in Java, you can use the finish method of the Activity class.

Here's an example of how you can do this:

public class MyActivity extends Activity {
    public void stopActivityExample() {
        Intent intent = new Intent(this, ExampleActivity.class);
        startActivity(intent);
        finish();
    }
}

This code will start the ExampleActivity activity and then immediately stop the current activity using the finish method.

Alternatively, you can use the setResult method to set a result code for the activity and then call the finish method to stop the activity. This approach is useful if you want to pass data back to the calling activity when the activity finishes.

Here's an example of how you can do this:

public class MyActivity extends Activity {
    public void stopActivityExample() {
        Intent intent = new Intent(this, ExampleActivity.class);
        startActivityForResult(intent, REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
            // Handle the result data
        } else {
            setResult(RESULT_CANCELED);
            finish();
        }
    }
}

This code will start the ExampleActivity activity and wait for a result to be returned. If the result is RESULT_OK, the current activity will continue running. If the result is any other value, the current activity will be stopped using the finish method.

Note that calling the finish method will cause the activity to be destroyed and removed from the activity stack, so it will not be possible to return to the activity using the "back" button.