JAVA高级面试进阶训练营视频教程

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在TabHost的子Activity中startActivityForResult调用其他Activity时候遭遇到onActivityResult方法不响应的问题.

 

解决办法如下:

1.通过父Activity启动其他Activity;

2.实现父Activity的onActivityResult方法,将该处接收到的请求转发给当前活动的子Activity;

3.自定义一个转发接口用来实现第2步中的转发功能;

4.所有SubActivity中实现第3步接口中的onTabActivityResult方法用来接收返回信息;

 

代码如下:

1.通过父Activity启动其他Activity

1 getParent().startActivityForResult(new Intent(...), REQUEST_CODE); 

2.实现父Activity的onActivityResult方法

 1     @Override
 2     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 3         // 获取当前活动的Activity实例
 4         Activity subActivity = getLocalActivityManager().getCurrentActivity();
 5         //判断是否实现返回值接口
 6         if (subActivity instanceof OnTabActivityResultListener) {
 7             //获取返回值接口实例
 8             OnTabActivityResultListener listener = (OnTabActivityResultListener) subActivity;
 9             //转发请求到子Activity
10             listener.onTabActivityResult(requestCode, resultCode, data);
11         }
12         super.onActivityResult(requestCode, resultCode, data);
13     }

3.自定义接口

/**
 * 解决子Activity无法接收Activity回调的问题
 * @author Administrator
 *
 */
public interface OnTabActivityResultListener {
    public void onTabActivityResult(int requestCode, int resultCode, Intent data);
}

4.所有SubActivity需要实现onTabActivityResult方法

public class Sub1Activity implements OnTabActivityResultListener {
    //...
    @Override
    public void onTabActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
            //实现该处逻辑
　　　　　　　　...
        }
    }
    //...
}

 

转载于:http://www.cnblogs.com/relinson/archive/2012/03/25/startActivityForResult.html