在activity A中startActivityForResult

在activity  B中代码如下

@Override

protected void onPause() {

                super.onPause();

                Intent intent=new Intent();

                intent.putExtra("currentSelectPhotoPath",dstList.get(currentSelectItem));

               setResult(GroupPhotoListActivity.REQUSET_FROM_VIEWIMAGE, intent);

                 finish();

}

在activity  A中，onActivityResult(int requestCode, int resultCode, Intent intent) 的intent总为null.

解决办法：

因为执行back键的时候，activity A很有可能已经start了，然后activity B 的onPause（）还没执行,所以setResult并没有传入

所以将setResult在finish（）中传入可以解决这个问题。

@Override

public void finish() {

             // TODO Auto-generated method stub

             Intent intent=new Intent();

             intent.putExtra("currentSelectPhotoPath",dstList.get(currentSelectItem));

          setResult(GroupPhotoListActivity.REQUSET_FROM_VIEWIMAGE, intent);

            super.finish();

}

也可以修改onBackpressed() 

http://stackoverflow.com/questions/10023969/result-not-set-in-onpause-using-setresult-when-pressing-the-back-button