android onActivityResult回调方法示例

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;
@Override
protected 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()
{

@Override
public void onClick(View v)
{
GoToFirstActivity();
}
});
secondButton.setOnClickListener(new View.OnClickListener()
{

@Override
public 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);
}

@Override
public 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;
}

/**
*
* 函数名称 ：onActivityResult 功能描述 ： 回调函数 参数说明 ：
*
* @param requestCode
* @param resultCode
* @param data
*            返回值：
*
*            修改记录： 日期 ：2013-3-25 下午2:24:25 修改人： 描述 ：
*
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
switch (requestCode)
{
case 1:
// TODO
if (resultCode == RESULT_OK)
{
String getData = data.getStringExtra("first");
Log.d("TAG", getData);
}
break;
case 2:
// TODO
if (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
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.first_activity);
Button button = (Button) findViewById(R.id.resultbutton1);
button.setOnClickListener(new View.OnClickListener()
{

@Override
public void onClick(View v)
{
Intent intent = new Intent();
intent.putExtra("first", "first");
setResult(MainActivity.RESULT_OK, intent);
finish();
}
});
}
}