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; } } }