简单的“Tab选项卡”示例
一、UI布局文件4个
1.activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.example.tabfragment.MainActivity" tools:ignore="MergeRootFrame" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <TextView android:id="@+id/tab1" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="生活新闻" /> <TextView android:id="@+id/tab2" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="财经新闻" /> <TextView android:id="@+id/tab3" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="体育新闻" /> </LinearLayout> <LinearLayout android:layout_height="match_parent" android:layout_width="match_parent" android:orientation="vertical" android:id="@+id/content" ></LinearLayout> </LinearLayout>
2.tab1.xml
<?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" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="生活大爆炸" android:textColor="#ff0000" android:textSize="30sp" /> </LinearLayout>
3.tab2.xml
<?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" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="德国夺得2014年巴西世界杯冠军" android:textColor="#00ff00" android:textSize="30sp" /> </LinearLayout>
4.tab3.xml
<?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" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="多个城市开始取消房屋限购政策" android:textColor="#0000ff" android:textSize="30sp" /> </LinearLayout>
二、前台代码
1.MainActivity.java
package com.example.tabfragment; import android.app.Activity; import android.app.ActionBar; import android.app.Fragment; import android.app.FragmentManager; import android.app.FragmentTransaction; import android.os.Bundle; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; import android.os.Build; public class MainActivity extends Activity implements View.OnClickListener { private TextView tab1; private TextView tab2; private TextView tab3; private FragmentManager fm; private FragmentTransaction ft; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tab1 = (TextView) findViewById(R.id.tab1); tab2 = (TextView) findViewById(R.id.tab2); tab3 = (TextView) findViewById(R.id.tab3); tab1.setOnClickListener(this); tab2.setOnClickListener(this); tab3.setOnClickListener(this); fm = getFragmentManager(); ft = fm.beginTransaction(); ft.replace(R.id.content, new Fragment1()); ft.commit(); } @Override public void onClick(View v) { ft = fm.beginTransaction(); switch (v.getId()) { case R.id.tab1: ft.replace(R.id.content, new Fragment1()); break; case R.id.tab2: ft.replace(R.id.content, new Fragment2()); break; case R.id.tab3: ft.replace(R.id.content, new Fragment3()); break; default: break; } ft.commit(); } }
2.Fragment1.java
package com.example.tabfragment; import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class Fragment1 extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.tab1, null); } }
3.Fragment2.java
package com.example.tabfragment; import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class Fragment2 extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.tab2, null); } }
4.Fragment3.java
package com.example.tabfragment; import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class Fragment3 extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.tab3, null); } }
效果截图