Android onactivityresult callback method example

Package COM. example. activityforresult; import android. OS. bundle; import android. app. activity; import android. content. intent; import android. util. log; import android. view. menu; import android. view. view; import android. widget. button; public class mainactivity extends activity {public static int result_ OK = 5; @ overrideprotected void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. activity_main); button mfirstbutton = (button) findviewbyid (R. id. first); button secondbutton = (button) findviewbyid (R. id. second); mfirstbutton. setonclicklistener (new view. onclicklistener () {@ overridepublic void onclick (view v) {gotofirstactivity () ;}}); secondbutton. setonclicklistener (new view. onclicklistener () {@ overridepublic void onclick (view v) {gotosencondactivity () ;}}) ;} private void gotofirstactivity () {startactivityforresult (new intent (mainactivity. this, firstactivity. class), 1);} private void gotosencondactivity () {startactivityforresult (new intent (mainactivity. this, secondactivity. class), 2) ;}@ overridepublic Boolean oncreateoptionsmenu (menu) {// inflate the menu; this adds items to the action bar if it is present. getmenuinflater (). inflate (R. menu. activity_main, menu); Return true;}/*** function name: onactivityresult Function Description: callback function parameter description: ** @ Param requestcode * @ Param resultcode * @ Param data * return value: ** modify record: Date: 2:24:25 modifier: Description: **/@ overrideprotected void onactivityresult (INT requestcode, int resultcode, intent data) {Switch (requestcode) {Case 1: // todoif (resultcode = result_ OK) {string getdata = data. getstringextra ("first"); log. D ("tag", getdata);} break; Case 2: // todoif (resultcode = result_ OK) {string getdata = data. getstringextra ("second"); log. D ("tag", getdata) ;}break; default: Break ;}}}

　　

package com.example.activityforresult;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;public class FirstActivity extends Activity{@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.first_activity);Button button = (Button) findViewById(R.id.resultbutton1);button.setOnClickListener(new View.OnClickListener(){@Overridepublic void onClick(View v){Intent intent = new Intent();intent.putExtra("first", "first");setResult(MainActivity.RESULT_OK, intent);finish();}});}}