021_04Fragment简单应用

 1 package com.example.day21_06fregmentcommuniction;
 2 
 3 import android.app.Activity;
 4 import android.os.Bundle;
 5 
 6 public class MainActivity extends Activity {
 7 
 8     @Override
 9     protected void onCreate(Bundle savedInstanceState) {
10         super.onCreate(savedInstanceState);
11         setContentView(R.layout.activity_main);
12     }
13 }

 1 package com.example.day21_06fregmentcommuniction;
 2 
 3 import android.app.Fragment;
 4 import android.app.FragmentManager;
 5 import android.os.Bundle;
 6 import android.view.LayoutInflater;
 7 import android.view.View;
 8 import android.view.ViewGroup;
 9 import android.widget.AdapterView;
10 import android.widget.AdapterView.OnItemClickListener;
11 import android.widget.ArrayAdapter;
12 import android.widget.ListView;
13 
14 public class Fragment_tab extends Fragment implements OnItemClickListener {
15 
16     String[] itmes = {"头条","IT新闻","娱乐","体育","历史"};
17     int[]   imagmes = {
18             R.drawable.a1,
19             R.drawable.a2,
20             R.drawable.a3,
21             R.drawable.a4,
22             R.drawable.a5 };
23     
24      @Override
25     public View onCreateView(LayoutInflater inflater, ViewGroup container,
26             Bundle savedInstanceState) {
27         // TODO Auto-generated method stub
28         ListView list = new ListView(getActivity());
29             
30         ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1,itmes);
31         list.setAdapter(adapter);
32         
33         list.setOnItemClickListener(this); 
34         return  list;//  super.onCreateView(inflater, container, savedInstanceState);
35     }
36 
37      // 当用户点击左侧的Fragment的某个一listitme时，应该在响应函数内 改变右侧Fragment的内容 
38     @Override
39     public void onItemClick(AdapterView<?> parent, View view, int position,long id) {
40         // TODO Auto-generated method stub
41         //先通过FragmentManager将我们需要操作的Fragment找到，然后在调用它的方法来操作修改它的内容
42         
43         FragmentManager fm = getFragmentManager();
44         Fragment_content fragment_content =(Fragment_content)  fm.findFragmentById(R.id.fragment_content);        
45         fragment_content.setTitle(itmes[position]);
46         fragment_content.setPhoto(imagmes[position]);        
47     }
48 }

 1 package com.example.day21_06fregmentcommuniction;
 2 
 3  import android.app.Fragment;
 4 import android.os.Bundle;
 5 import android.view.LayoutInflater;
 6 import android.view.View;
 7 import android.view.ViewGroup;
 8 import android.widget.ImageView;
 9 import android.widget.TextView;
10 
11 public class Fragment_content extends Fragment {
12 
13     private TextView tv_tile;
14     private ImageView iv_photo;
15 
16     @Override
17     public View onCreateView(LayoutInflater inflater, ViewGroup container,
18             Bundle savedInstanceState) {
19         // 加载fragment_content.xml布局文件              
20          View v =inflater.inflate(R.layout.fragment_content, null);     
21          tv_tile = (TextView) v.findViewById(R.id.tv_title);
22          iv_photo = (ImageView ) v.findViewById(R.id.iv_photo);                 
23         return  v;
24     }
25       
26      public void setTitle(String s){ 
27          tv_tile.setText(s);
28      }
29      
30      public void setPhoto(int i){         
31         iv_photo.setImageResource(i);
32      }     
33 }

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5  
 6     tools:context="com.example.day21_06fregmentcommuniction.MainActivity"
 7     android:orientation="horizontal" >
 8     
 9 <fragment 
10     android:id="@+id/fragment_tab"
11     android:layout_width="0dp" 
12     android:layout_height="fill_parent"
13     android:layout_weight="3"
14     android:name="com.example.day21_06fregmentcommuniction.Fragment_tab"/>
15     
16 <fragment 
17     android:id="@+id/fragment_content"
18     android:layout_width="0dp" 
19     android:layout_height="fill_parent"
20     android:layout_weight="7"   
21     android:name="com.example.day21_06fregmentcommuniction.Fragment_content"/>
22 
23 </LinearLayout>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical" >
 6     
 7 <TextView 
 8     android:id="@+id/tv_title"
 9     android:layout_width="wrap_content"
10     android:layout_height="wrap_content"
11     android:layout_gravity="center_horizontal"
12     android:background="#00FF00"/>
13  <ImageView 
14      android:id="@+id/iv_photo"
15       android:layout_width="wrap_content"
16     android:layout_height="wrap_content"
17     android:src="@drawable/ic_launcher"
18      />
19 </LinearLayout>