Android开发笔记之:返回键的复写onBackPressed()介绍

@Override
    public void onBackPressed() {
       // TODO Auto-generated method stub
     Intent backIntent = new Intent(Activity3.this, Activity1.class);
       Bundle bundle = new Bundle();
       if(!clickOk)
           bundle.putString("send", "ERROR");
       backIntent.putExtras(bundle);
       Activity3.this.setResult(1, backIntent);
       Activity3.this.finish();
        //super.onBackPressed();              
    }