Onactivityresult () in Android gets the return value

Requirements: Jumps from firstactivity to Secondactivity, operates in secondactivity, and returns to Firstactivity.

The main code in firstactivity:

private static final int request_code = 1;

private static final int result_code = 101;

Triggering events

public void Gotosencond () {

Intent intent=new Intent (this,secondactivity.class);

Startactivityforresult (Intent, Request_code);

}

The second parameter in the Onactivityresult () method is the key returned by the secondactivity, and the third parameter is the value of the key that Secondactivity returns.

@Override

protected void Onactivityresult (int requestcode, int resultcode, Intent data) {

if (Requestcode==request_code) {

if (Resultcode==result_code) {

String Result=data.getstringextra ("second");//Gets the contents of the secondactivity returned

Textview.settext (result);

}

}

Super.onactivityresult (Requestcode, ResultCode, data);

}

Code in the Secondactivity class:

　　

final int result_code=101;

public void CloseButton (view view) {

Intent intent=new Intent ();

Intent.putextra ("Second", "I am second!");

Setresult (Result_code, intent);

Finish ();

}

Onactivityresult () in Android gets the return value