完成意图后如何返回应用程序并执行语句

Question

我已经编写了一个安卓代码，在完成意图之后调用应用程序的意图A.我想回到A app并执行更多行。请帮帮我。

protected void onCreate(Bundle savedInstanceState) 
{

       super.onCreate(savedInstanceState);      
        setContentView(R.layout.send_mail);

        pdf=(Button) findViewById(R.id.pdf);        
        pdf.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent in= new Intent(getApplicationContext(),AddLoc.class);                         
                            startActivity(in);
                            et1.setVisibility(View.VISIBLE);//Code to be executed after activity
                            et2.setVisibility(View.GONE);
                            et3.setVisibility(View.VISIBLE);
                            et4.setVisibility(View.VISIBLE);
                            new getMasterLocation().execute();
            }
        });
    }

Answer 1

类似于Activity Result？