本文将带你了解Android应用开发之Android碎片兼顾平板简单示例，希望本文对大家学Android有所帮助。

示例一（简单）：
activity_main：
<!--?xml version="1.0"   encoding="utf-8"?--><linearlayout   android:layout_height="match_parent"   android:layout_width="match_parent"   android:orientation="horizontal" tools:context="com.example.mjon.myapplication.MainActivity"   xmlns:android="https://schemas.android.com/apk/res/android"   xmlns:tools="https://schemas.android.com/tools">     <fragment   android:id="@+id/left_fragment" android:layout_height="match_parent"   android:layout_weight="1" android:layout_width="0dp"   android:name="com.example.mjon.myapplication.LeftFragment">     <fragment   android:id="@+id/right_fragment"   android:layout_height="match_parent"   android:layout_weight="1" android:layout_width="0dp"   android:name="com.example.mjon.myapplication.RightFragment"> </fragment></fragment></linearlayout>
left_fragment：
?12<!--?xml version="1.0"   encoding="utf-8"?--><linearlayout   android:layout_height="match_parent"   android:layout_width="match_parent"   android:orientation="vertical" xmlns:android="https://schemas.android.com/apk/res/android"><button   android:id="@+id/button" android:isscrollcontainer="true"   android:layout_gravity="center_horizontal"   android:layout_height="wrap_content" android:layout_width="wrap_content"   android:text="Button"></button></linearlayout>
right_fragment：
?123456<!--?xml version="1.0"   encoding="utf-8"?--><linearlayout   android:background="#a5ffdc"   android:layout_height="match_parent"   android:layout_width="match_parent" android:orientation="vertical"   xmlns:android="https://schemas.android.com/apk/res/android">     <textview   android:layout_gravity="center_horizontal"   android:layout_height="wrap_content" android:layout_width="wrap_content"   android:text="This is Fragment test"   android:textsize="35sp"> </textview></linearlayout>
LeftFragment：
?123456789101112131415161718package   com.example.mjon.myapplication; import android.os.Bundle;import   android.support.annotation.Nullable;import   android.support.v4.app.Fragment;import android.view.LayoutInflater;import   android.view.View;import android.view.ViewGroup; public class   LeftFragment extends Fragment   {     @Nullable    @Override    public   View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,   @Nullable Bundle savedInstanceState)   {        View view =   inflater.inflate(R.layout.<em>left_fragment</em>,container,false);        return   view;    }}
RightFragment：
?123456789101112131415161718package   com.example.mjon.myapplication; import android.os.Bundle;import   android.support.annotation.Nullable;import   android.support.v4.app.Fragment;import android.view.LayoutInflater;import   android.view.View;import android.view.ViewGroup; public class   RightFragment extends Fragment   {     @Nullable    @Override    public   View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,   @Nullable Bundle savedInstanceState)   {        View view =   inflater.inflate(R.layout.<em>right_fragment</em>,container,false);        return   view;    }}
示例二（动态加载）：
activity_main：
?12345678<!--?xml version="1.0"   encoding="utf-8"?--><linearlayout   android:layout_height="match_parent"   android:layout_width="match_parent"   android:orientation="horizontal" tools:context="com.example.mjon.myapplication.MainActivity"   xmlns:android="https://schemas.android.com/apk/res/android"   xmlns:tools="https://schemas.android.com/tools"> <fragment   android:id="@+id/left_fragment" android:layout_height="match_parent"   android:layout_weight="1" android:layout_width="0dp"   android:name="com.example.mjon.myapplication.LeftFragment"> <framelayout   android:id="@+id/right_fragment" android:layout_height="match_parent"   android:layout_weight="1"   android:layout_width="0dp"> </framelayout></fragment></linearlayout>
left_fragment：
?12<!--?xml version="1.0"   encoding="utf-8"?--><linearlayout   android:layout_height="match_parent"   android:layout_width="match_parent"   android:orientation="vertical" xmlns:android="https://schemas.android.com/apk/res/android"><button   android:id="@+id/button" android:isscrollcontainer="true"   android:layout_gravity="center_horizontal"   android:layout_height="wrap_content" android:layout_width="wrap_content"   android:text="Button"></button></linearlayout>
right_fragment：
?123456<!--?xml version="1.0"   encoding="utf-8"?--><linearlayout   android:background="#a5ffdc"   android:layout_height="match_parent"   android:layout_width="match_parent" android:orientation="vertical"   xmlns:android="https://schemas.android.com/apk/res/android">     <textview   android:layout_gravity="center_horizontal"   android:layout_height="wrap_content" android:layout_width="wrap_content"   android:text="This is Fragment test"   android:textsize="35sp"> </textview></linearlayout>
other_fragment：
?123456<!--?xml version="1.0"   encoding="utf-8"?--><linearlayout   android:background="#5ac0fc"   android:layout_height="match_parent"   android:layout_width="match_parent" android:orientation="vertical"   xmlns:android="https://schemas.android.com/apk/res/android">     <textview   android:layout_gravity="center_horizontal"   android:layout_height="wrap_content" android:layout_width="wrap_content"   android:text="动态加载"   android:textsize="35sp"> </textview></linearlayout>
LeftFragment：
?1 
?123456789101112131415161718package   com.example.mjon.myapplication; import android.os.Bundle;import   android.support.annotation.Nullable;import   android.support.v4.app.Fragment;import android.view.LayoutInflater;import   android.view.View;import android.view.ViewGroup; public class   LeftFragment extends Fragment   {     @Nullable    @Override    public   View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,   @Nullable Bundle savedInstanceState)   {        View view =   inflater.inflate(R.layout.<em>left_fragment</em>,container,false);        return   view;    }}
RightFragment：
?1 
?123456789101112131415161718package   com.example.mjon.myapplication; import android.os.Bundle;import   android.support.annotation.Nullable;import   android.support.v4.app.Fragment;import android.view.LayoutInflater;import   android.view.View;import android.view.ViewGroup; public class   RightFragment extends Fragment   {     @Nullable    @Override    public   View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,   @Nullable Bundle savedInstanceState)   {        View view =   inflater.inflate(R.layout.<em>right_fragment</em>,container,false);        return   view;    }}
OtherFragment：
package   com.example.mjon.myapplication; import android.os.Bundle;import   android.support.annotation.Nullable;import   android.support.v4.app.Fragment;import android.view.LayoutInflater;import   android.view.View;import android.view.ViewGroup; public class   OtherFragment extends Fragment   {     @Nullable    @Override    public   View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,   @Nullable Bundle savedInstanceState) {        View   view =   inflater.inflate(R.layout.<em>other_fragment</em>,container,false);        return   view;    }}
MainActivity：
package   com.example.mjon.myapplication; import   android.support.v4.app.Fragment;import   android.support.v4.app.FragmentManager;import   android.support.v4.app.FragmentTransaction;import   android.support.v7.app.AppCompatActivity;import android.os.Bundle;import   android.view.View;import android.widget.Button; public class   MainActivity extends AppCompatActivity   {     @Override    protected   void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        replaceFragment(new   RightFragment());        Button btn =   (Button)findViewById(R.id.<em>button</em>);        btn.setOnClickListener(new   View.OnClickListener()   {            @Override            public   void onClick(View view)   {                replaceFragment(new   OtherFragment());            }        });    }     private   void replaceFragment(Fragment fragment){        FragmentManager   fragmentManager =   getSupportFragmentManager();        FragmentTransaction   transaction =   fragmentManager.beginTransaction();        transaction.replace(R.id.<em>right_fragment</em>,fragment);        transaction.commit();    }}    

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