Android intent to send a parameter back result (vi)

For example, there are two pages, a, B. A page to pass parameters to the B page, b page will get the parameters processed, and then the results are returned to page a with parameters.

The code for the main mainactivity class of the 1.a page is as follows:

    Private button button;    Private EditText result;    Private final static int requestcode = 1;

    @Override    protected void onCreate (Bundle savedinstancestate) {        super.oncreate (savedinstancestate);                Setcontentview (r.layout.activity_main);        Button = (button) This.findviewbyid (r.id.button1);        result = (EditText) This.findviewbyid (r.id.result);                Button.setonclicklistener (New View.onclicklistener () {@Overridepublic void OnClick (View arg0) {//TODO auto-generated Method stub

Intent Intent = new Intent (mainactivity.this,otheractivity.class); Intent.putextra ("A", "true"); Startactivityforresult (Intent,requestcode);}});            }

<pre name= "code" class= "HTML" >    @Override    protected void onactivityresult (int requestcode,int Resultcode,intent data) {    Super.onactivityresult (Requestcode, ResultCode, data);    if (ResultCode = = 2) {    if (Requestcode = = Requestcode) {

                        <span style= "font-family:arial, Helvetica, Sans-serif;" >string c= Intent.getstringextra ("C");</span>    Result.settext (c);}}        

The parameter A is passed to page B,the Onactivityresult function handles the parameter C passed over the B page .

<span style= "font-family:arial, Helvetica, Sans-serif;" ></span>

<span style= "font-family:arial, Helvetica, Sans-serif;" After the >2.otheractivity.java function processes a parameter, the C parameter is passed back to the a page. In the B page of the OnCreate inside processing </span>

<span style= "font-family:arial, Helvetica, Sans-serif;" ></span><pre name= "code" class= "HTML" >   <pre name= "code" class= "html" > @Overridepublic void OnClick (View arg0) {//TODO auto-generated method stub        Intent Intent = Getintent ();        String a = Intent.getstringextra ("a");        String C;        if (a== "true") {        c = "It is true";        } else{        C = "It is false";        }        Intent newintent = new Intent () Newintent.putextra ("C", c); Setresult (2,intent); Finish ();});

Android intent to send a parameter back result (vi)