android onActivityResult

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main.xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <TextView        android:id="@+id/aa"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="hello world" />        <Button         android:id="@+id/bb"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_marginTop="100dp"        android:text="跳转" /></RelativeLayout>

MainActivity.java:

package com.lianxi.test;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.TextView;public class MainActivity extends Activity {public TextView tt;public Button button;public int i = 1;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);tt = (TextView)findViewById(R.id.aa);button = (Button)findViewById(R.id.bb);button.setOnClickListener(new Button.OnClickListener() {@Overridepublic void onClick(View arg0) {Intent ii = new Intent(MainActivity.this, Activity2.class);startActivityForResult(ii, 1 );}});}@Overridepublic void onActivityResult(int requestCode, int resultCode, Intent data) {switch (requestCode) {case 1://requestCodeif(resultCode == RESULT_OK){//resultCodeLog.e("onActivityResult", i+"");tt.setText("第"+ i +"次activity跳转成功");i++;}break;default:break;}}}

Activity2.java:

package com.lianxi.test;import android.app.Activity;import android.os.Bundle;public class Activity2 extends Activity{@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setResult(RESULT_OK);finish();}}

每次点击“跳转”按钮页面文字显示效果如下所示：

第1次activity跳转成功

第2次activity跳转成功

第3次activity跳转成功

第4次activity跳转成功

第5次activity跳转成功

第6次activity跳转成功

……