android onActivityResult回調方法樣本

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 menu){// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.activity_main, menu);return true;}/** *  * 函數名稱 ：onActivityResult 功能描述 ： 回呼函數 參數說明 ： *  * @param requestCode * @param resultCode * @param data *            傳回值： *  *            修改記錄： 日期 ：2013-3-25 下午2:24:25 修改人： 描述 ： *  */@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();}});}}