TabHost中使用startActivityForResult无法接收返回值的解决方案
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
