StartActivity ForResoult

   Activity ，     startActivityForResult()         Activity       ，    Activity   ，        Activity onActivityResult(int requestCode, int resultCode, Intent data)  。               Activity， onActivityResult()        (ResultActivity NewActivity      Activity)：
public class ResultActivity extends Activity {
       .....
       ResultActivity.this.setResult(1, intent);
       ResultActivity.this.finish();
}
public class NewActivity extends Activity {
       ......
        NewActivity.this.setResult(2, intent);
        NewActivity.this.finish();
}
public class MainActivity extends Activity { //   Activity   ResultActivity NewActivity
       @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) {
               switch(resultCode){
                   case 1:
                   // ResultActivity     
                   case 2:
                    // NewActivity     
                }
          }
}