TabHost的Activity中onActivityResult方法不被调用的解决方案

项目中有用到在TabHost中嵌套子Activity,然而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.子Activity中实现第3步接口中的方法用来接收返回信息;

 

代码如下:

1.通过父Activity启动其他Activity

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

view plainco

2.实现父Activity的onActivityResult方法

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

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.子Activity需要实现onTabActivityResult方法

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

注意子Activity一定要实现implements   OnTabActivityResultListener 

然后重写

public void onTabActivityResult(int requestCode, int resultCode, Intent data) {          if (resultCode == RESULT_OK) {              switch (requestCode) {              case SUB_REQUEST_CODE:                  //Sub_History_visit();                  break;                default:                  break;              }          }      }  

参考：http://www.johdan.com/tabhost_do_not_-exist-_startactivityforresult.html