My android learning experience 15 and android learning experience 15

My android learning experience 15 and android learning experience 15

Use Intent to redirect pages with returned results

Mainly used methods:

(1) Intent constructor: intent (current interface object, interface to jump to. class );

(2) onActivityResult (int requestCode, int resultCode, Intent data)

(3) startActivityForResult (Intent intent, int requestCode );

(4) setResult (int resultCode, Intent in); // write it on the page after the jump

(5) in. putExtra ("return", "returned turning result"); // used in conjunction with (4) to store the result key-value pairs

The Code is as follows: the first page

Package com. example. intentexample;

Import javax. security. auth. PrivateCredentialPermission;

Import android. support. v7.app. ActionBarActivity;
Import android. content. Intent;
Import android. OS. Bundle;
Import android. preference. PreferenceManager. OnActivityResultListener;
Import android. view. Menu;
Import android. view. MenuItem;
Import android. view. View;
Import android. view. View. OnClickListener;
Import android. widget. Button;
Import android. widget. TextView;

Public class MainActivity extends ActionBarActivity {

Private Button bt;
Private TextView TV;

Protected void onCreate (Bundle savedInstanceState ){
Super. onCreate (savedInstanceState );
SetContentView (R. layout. activity_main );
Bt = (Button) findViewById (R. id. button1 );
TV = (TextView) findViewById (R. id. textView2 );
Bt. setOnClickListener (new OnClickListener (){

Public void onClick (View v ){
// TODO Auto-generated method stub
Intent intent = new Intent (MainActivity. this, factiworkflow. class );
StartActivityForResult (intent, 1 );
}
});
}
@ Override
Protected void onActivityResult (int arg0, int arg1, Intent arg2 ){
// TODO Auto-generated method stub
Super. onActivityResult (arg0, arg1, arg2 );
If (arg0 = 1 & arg1 = 2 ){
TV. setText (arg2.getStringExtra ("return "));
}
}

}

 

Second Interface

Package com. example. intentexample;

Import javax. security. auth. PrivateCredentialPermission;

Import android. app. Activity;
Import android. content. Intent;
Import android. OS. Bundle;
Import android. view. View;
Import android. view. View. OnClickListener;
Import android. widget. Button;

Public class facti1_extends Activity {
Private Button bt;
@ Override
Protected void onCreate (Bundle savedInstanceState ){
// TODO Auto-generated method stub
Super. onCreate (savedInstanceState );
SetContentView (R. layout. facti.pdf );
Bt = (Button) findViewById (R. id. button1 );
Bt. setOnClickListener (new OnClickListener (){

@ Override
Public void onClick (View v ){
// TODO Auto-generated method stub
Intent in = new Intent ();
In. putExtra ("back", "returned rotary results ");
SetResult (2, in );
Finish ();
}
});
}
}

 

Before page Jump

After page Jump:

The page returns the following results: