简单模拟QQ界面框架。

 1 package com.lixu.qqjiemian;
 2 
 3 import java.util.Timer;
 4 import java.util.TimerTask;
 5 import android.app.Activity;
 6 import android.content.Intent;
 7 import android.os.Bundle;
 8 import android.view.Window;
 9 //欢迎界面
10 public class WelcomActivity extends Activity {
11     @Override
12     protected void onCreate(Bundle savedInstanceState) {
13         super.onCreate(savedInstanceState);
14         requestWindowFeature(Window.FEATURE_NO_TITLE);
15         setContentView(R.layout.welcom);
16         
17         
18         // 计时器
19         TimerTask timetask = new TimerTask() {
20 
21             @Override
22             public void run() {
23                 Intent intent=new Intent(WelcomActivity.this, MainActivity.class);
24                 startActivity(intent);
25 
26             }
27         };
28         // 设置时间长短
29         Timer time = new Timer();
30         time.schedule(timetask, 3000);
31 
32     }
33 }

  1 package com.lixu.qqjiemian;
  2 
  3 import android.app.Activity;
  4 import android.app.Fragment;
  5 import android.app.FragmentManager;
  6 import android.app.FragmentTransaction;
  7 import android.graphics.Color;
  8 import android.os.Bundle;
  9 import android.view.View;
 10 import android.view.Window;
 11 import android.widget.TextView;
 12 
 13 public class MainActivity extends Activity implements android.view.View.OnClickListener {
 14     private TextView xiaoxi;
 15     private TextView lianxiren;
 16     private TextView dongtai;
 17 
 18     private TextView title;
 19 
 20     private Fragment xiaoxiFragment;
 21     private Fragment lianxirenFragment;
 22     private Fragment dongtaiFragment;
 23 
 24     @Override
 25     protected void onCreate(Bundle savedInstanceState) {
 26         super.onCreate(savedInstanceState);
 27         
 28         requestWindowFeature(Window.FEATURE_NO_TITLE);
 29         setContentView(R.layout.activity_main);
 30 
 31         title = (TextView) findViewById(R.id.title);
 32 
 33         xiaoxi = (TextView) findViewById(R.id.xiaoxi);
 34         lianxiren = (TextView) findViewById(R.id.lianxiren);
 35         dongtai = (TextView) findViewById(R.id.dongtai);
 36 
 37         xiaoxi.setOnClickListener(this);
 38         lianxiren.setOnClickListener(this);
 39         dongtai.setOnClickListener(this);
 40 
 41         xiaoxiFragment = new XiaoxiFragment();
 42         lianxirenFragment = new LianxirenFragment();
 43         dongtaiFragment = new DongtaiFragment();
 44         // 初始化的界面设置
 45         choose(1);
 46         title.setText(xiaoxi.getText() + " ");
 47         chooseFragment(xiaoxiFragment);
 48 
 49     }
 50 
 51     // 设置点击事件
 52     @Override
 53     public void onClick(View v) {
 54         switch (v.getId()) {
 55         case R.id.xiaoxi:
 56             choose(1);
 57 
 58             chooseFragment(xiaoxiFragment);
 59 
 60             title.setText(xiaoxi.getText() + " ");
 61 
 62             break;
 63         case R.id.lianxiren:
 64 
 65             choose(2);
 66 
 67             chooseFragment(lianxirenFragment);
 68 
 69             title.setText(lianxiren.getText() + " ");
 70 
 71             break;
 72         case R.id.dongtai:
 73 
 74             choose(3);
 75 
 76             chooseFragment(dongtaiFragment);
 77 
 78             title.setText(dongtai.getText() + " ");
 79 
 80             break;
 81 
 82         default:
 83             break;
 84         }
 85 
 86     }
 87 
 88     private void choose(int pos) {
 89         switch (pos) {
 90         case 1:
 91             xiaoxi.setTextColor(Color.BLUE);
 92             xiaoxi.setBackgroundColor(Color.GRAY);
 93 
 94             lianxiren.setTextColor(Color.GRAY);
 95             lianxiren.setBackgroundColor(Color.WHITE);
 96 
 97             dongtai.setTextColor(Color.GRAY);
 98             dongtai.setBackgroundColor(Color.WHITE);
 99 
100             break;
101         case 2:
102             lianxiren.setTextColor(Color.BLUE);
103             lianxiren.setBackgroundColor(Color.GRAY);
104 
105             xiaoxi.setTextColor(Color.GRAY);
106             xiaoxi.setBackgroundColor(Color.WHITE);
107 
108             dongtai.setTextColor(Color.GRAY);
109             dongtai.setBackgroundColor(Color.WHITE);
110             break;
111 
112         case 3:
113             dongtai.setTextColor(Color.BLUE);
114             dongtai.setBackgroundColor(Color.GRAY);
115 
116             lianxiren.setTextColor(Color.GRAY);
117             lianxiren.setBackgroundColor(Color.WHITE);
118 
119             xiaoxi.setTextColor(Color.GRAY);
120             xiaoxi.setBackgroundColor(Color.WHITE);
121             break;
122 
123         default:
124             break;
125         }
126     }
127 
128     // 选择不同的Fragment 的方法
129     private void chooseFragment(Fragment fragment) {
130 
131         FragmentManager fm = this.getFragmentManager();
132         FragmentTransaction ft = fm.beginTransaction();
133         ft.replace(R.id.fragment, fragment);
134         // 提交
135         ft.commit();
136 
137     }
138 
139 }

 1 package com.lixu.qqjiemian;
 2 
 3 import android.app.Fragment;
 4 import android.graphics.Color;
 5 import android.os.Bundle;
 6 import android.view.LayoutInflater;
 7 import android.view.View;
 8 import android.view.ViewGroup;
 9 import android.widget.TextView;
10 
11 public class XiaoxiFragment extends Fragment {
12 
13     @Override
14     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
15 
16         View view = inflater.inflate(android.R.layout.simple_list_item_1, null);
17 
18         TextView tv = (TextView) view.findViewById(android.R.id.text1);
19         tv.setText("消息界面");
20         tv.setBackgroundColor(Color.RED);
21 
22         return view;
23     }
24 }

 1 package com.lixu.qqjiemian;
 2 
 3 import android.app.Fragment;
 4 import android.graphics.Color;
 5 import android.os.Bundle;
 6 import android.view.LayoutInflater;
 7 import android.view.View;
 8 import android.view.ViewGroup;
 9 import android.widget.TextView;
10 
11 public class LianxirenFragment extends Fragment {
12     @Override
13     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
14 
15         View view = inflater.inflate(android.R.layout.simple_list_item_1, null);
16 
17         TextView tv = (TextView) view.findViewById(android.R.id.text1);
18         tv.setText("联系人界面");
19         tv.setBackgroundColor(Color.GREEN);
20 
21         return view;
22     }
23 }

 1 package com.lixu.qqjiemian;
 2 
 3 import android.app.Fragment;
 4 import android.graphics.Color;
 5 import android.os.Bundle;
 6 import android.view.LayoutInflater;
 7 import android.view.View;
 8 import android.view.ViewGroup;
 9 import android.widget.TextView;
10 
11 public class DongtaiFragment extends Fragment{
12     
13     @Override
14     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
15 
16         View view = inflater.inflate(android.R.layout.simple_list_item_1, null);
17 
18         TextView tv = (TextView) view.findViewById(android.R.id.text1);
19         tv.setText("动态界面");
20         tv.setBackgroundColor(Color.YELLOW);
21 
22         return view;
23     }
24 
25 }

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:id="@+id/LinearLayout1"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:orientation="vertical" >
 7 
 8     <TextView
 9         android:id="@+id/title"
10         android:layout_width="match_parent"
11         android:layout_height="wrap_content"
12         android:gravity="center"
13         android:layout_weight="1"
14         android:textColor="#f44336"
15         android:textSize="30sp" />
16 
17     <FrameLayout
18         android:id="@+id/fragment"
19         android:layout_width="match_parent"
20         android:layout_height="wrap_content"
21         android:layout_weight="10" />
22 
23     <LinearLayout
24         android:layout_width="match_parent"
25         android:layout_height="wrap_content"
26         android:layout_weight="1"
27         android:orientation="horizontal" >
28 
29         <TextView
30             android:id="@+id/xiaoxi"
31             android:layout_width="wrap_content"
32             android:layout_height="match_parent"
33             android:layout_weight="1"
34             android:gravity="center"
35             android:text="消息"
36             android:textSize="15sp" />
37 
38         <TextView
39             android:id="@+id/lianxiren"
40             android:layout_width="wrap_content"
41             android:layout_height="match_parent"
42             android:layout_weight="1"
43             android:gravity="center"
44             android:text="联系人"
45             android:textSize="15sp" />
46 
47         <TextView
48             android:id="@+id/dongtai"
49             android:layout_width="wrap_content"
50             android:layout_height="match_parent"
51             android:layout_weight="1"
52             android:gravity="center"
53             android:text="动态"
54             android:textSize="15sp" />
55     </LinearLayout>
56 
57 </LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/welcom"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/welcome" />

</LinearLayout>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.lixu.qqjiemian"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6 
 7     <uses-sdk
 8         android:minSdkVersion="19"
 9         android:targetSdkVersion="19" />
10 
11     <application
12         android:allowBackup="true"
13         android:icon="@drawable/ic_launcher"
14         android:label="@string/app_name"
15         android:theme="@style/AppTheme" >
16         <activity
17             android:name=".MainActivity"
18             android:label="@string/app_name" >
19         </activity>
20         
21         <activity
22             android:name=".WelcomActivity"
23             android:label="@string/app_name"
24             android:noHistory="true" >
25             <intent-filter>
26                 <action android:name="android.intent.action.MAIN" />
27 
28                 <category android:name="android.intent.category.LAUNCHER" />
29             </intent-filter>
30         </activity>
31     </application>
32 
33 </manifest>