Android学习笔记之fragment的通信

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     android:id="@+id/linearLayout"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical" >
 6 
 7     <EditText
 8         android:id="@+id/editText1"
 9         android:layout_width="match_parent"
10         android:layout_height="wrap_content" />
11 
12     <Button
13         android:id="@+id/button1"
14         android:layout_width="match_parent"
15         android:layout_height="wrap_content" />
16 
17 </LinearLayout>

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     android:layout_width="match_parent"
 3     android:layout_height="match_parent"
 4     android:orientation="vertical" >
 5     
 6     <TextView 
 7         android:id="@+id/textView1"
 8         android:layout_width="match_parent"
 9         android:layout_height="wrap_content"/>
10     
11 
12 </LinearLayout>

 1 public class MainActivity extends ActionBarActivity  implements MyListener{
 2 
 3     private Button b1;
 4     private EditText et1;
 5 
 6     @Override
 7     protected void onCreate(Bundle savedInstanceState) {
 8 
 9         super.onCreate(savedInstanceState);
10         setContentView(R.layout.main);
11 
12         et1 = (EditText) findViewById( R.id.editText1);
13         b1 = (Button) findViewById(R.id.button1);
14         b1.setOnClickListener(new OnClickListener() {
15 
16             @Override
17             public void onClick(View v) {
18                 // TODO Auto-generated method stub
19                 String text = et1.getText().toString();
20                 Bundle bundle = new Bundle();
21                 Myfragment myfragment = new Myfragment();
22                 bundle.putString("name", text);
23                 myfragment.setArguments(bundle);
24                 FragmentManager fragmentManager = getFragmentManager();
25                 FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
26                 fragmentTransaction.add(R.id.linearLayout, myfragment, "myfragment");
27                 fragmentTransaction.addToBackStack(null);
28                 fragmentTransaction.commit();
29                 Toast.makeText(MainActivity.this, "向fragment发送数据"+text, Toast.LENGTH_SHORT).show();
30 
31             }
32         });
33     }
34 
35     @Override
36     public void thank(String code) {
37         // TODO Auto-generated method stub
38         Toast.makeText(MainActivity.this, "成功接收"+code+"客气", Toast.LENGTH_SHORT).show();
39     }
40 
41 
42 }

 1 public class Myfragment extends Fragment{
 2     
 3     private TextView tv1;
 4     private String code = "Thanks";
 5     private MyListener listener;
 6     
 7     public interface MyListener{
 8         
 9         public void thank(String code);
10             
11     }
12     
13     @Override
14     public void onAttach(Activity activity) {
15         // TODO Auto-generated method stub
16         listener = (MyListener) activity;
17         super.onAttach(activity);
18     }
19     
20     @Override
21     public View onCreateView(LayoutInflater inflater, ViewGroup container,
22             Bundle savedInstanceState) {
23         // TODO Auto-generated method stub
24         View view = inflater.inflate(R.layout.fragment, container,false);
25         tv1 = (TextView) view.findViewById(R.id.textView1);
26         String text = getArguments().get("name")+"";
27         tv1.setText(text);
28         Toast.makeText(getActivity(), "已经成功接收"+text, Toast.LENGTH_SHORT).show();
29         Toast.makeText(getActivity(), "向Activity发送"+text, Toast.LENGTH_SHORT).show();
30         listener.thank(code);
31         return view;
32     }
33 
34 }