简单的Fragment切换

package com.example.hongyan;

import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.LinearLayout;

/** * @author HD * @date 2015-12-7 * @package_name com.example.hongyan * @file_name MainActivity.java */
public class MainActivity extends Activity implements OnClickListener {
    private LinearLayout mTabWeixin;
    private LinearLayout mTabContact;
    private LinearLayout mTabtongxun;
    private LinearLayout mTabSet;
    private ContentFrament mWeixin;
    private FriendFragment mFriend;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        mTabWeixin = (LinearLayout) findViewById(R.id.mTabWeixin);
        mTabContact = (LinearLayout) findViewById(R.id.mTabContact);
        mTabtongxun = (LinearLayout) findViewById(R.id.mTab_tongxun);
        setDefaultFragment();
        mTabSet = (LinearLayout) findViewById(R.id.mTab_set);
        mTabWeixin.setOnClickListener(this);
        mTabContact.setOnClickListener(this);
    }

    private void setDefaultFragment() {
        FragmentManager fm = getFragmentManager();
        FragmentTransaction transaction = fm.beginTransaction();
        mWeixin = new ContentFrament();
        transaction.replace(R.id.framLayout, mWeixin);
        transaction.commit();
    }

    @Override
    public void onClick(View v) {
        // TODO 自动生成的方法存根
        FragmentManager fm = getFragmentManager();
        FragmentTransaction transaction = fm.beginTransaction();
        switch (v.getId()) {
        case R.id.mTabWeixin:
            if(mWeixin == null){
                mWeixin = new ContentFrament();
            }
            transaction.replace(R.id.framLayout, mWeixin);
            break;

        case R.id.mTabContact:
            if( mFriend == null){
                mFriend = new FriendFragment();
            }
            transaction.replace(R.id.framLayout, mFriend);
            break;
        }
        transaction.commit();
    }

}

package com.example.hongyan;

import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class ContentFrament extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO 自动生成的方法存根
        View view = inflater.inflate(R.layout.content, container, false);
        return view;
    }
}

package com.example.hongyan;

import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class FriendFragment extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO 自动生成的方法存根
        View view = inflater.inflate(R.layout.friend_fragment, container, false);
        return view;

    }
}

package com.example.hongyan;

import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView.FindListener;
import android.widget.Button;
import android.widget.Toast;

public class TitileFragment extends Fragment {
    private Button mButton;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO 自动生成的方法存根
        View view = inflater.inflate(R.layout.title, container);
        mButton = (Button) view.findViewById(R.id.button);
        mButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO 自动生成的方法存根
                Toast.makeText(getActivity(), "title", Toast.LENGTH_SHORT).show();
            }
        });
        return view;
    }
}

layout_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" >

    <fragment  android:id="@+id/titlt_fragment" android:name="com.example.hongyan.TitileFragment" android:layout_width="match_parent" android:layout_height="45dp" android:layout_alignParentTop="true" />

    <include  android:id="@+id/bottomBar" android:layout_width="match_parent" android:layout_height="55dp" android:layout_alignParentBottom="true" layout="@layout/bottombar" />

    <FrameLayout  android:id="@+id/framLayout" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_above="@id/bottomBar" android:layout_below="@id/titlt_fragment" >
    </FrameLayout>

</RelativeLayout>

bottombar.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="horizontal" android:background="#FF0000">

    <LinearLayout android:id="@+id/mTabWeixin" android:layout_width="0dp" android:layout_height="45dp" android:layout_weight="1" >
        <Button android:id="@+id/btn_weixing" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="微信" android:visibility="gone"/>
    </LinearLayout>

    <LinearLayout android:id="@+id/mTabContact" android:layout_width="0dp" android:layout_height="45dp" android:layout_weight="1" >
        <Button android:id="@+id/btn_Contact" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="联系人" android:visibility="gone"/>
    </LinearLayout>

    <LinearLayout android:id="@+id/mTab_tongxun" android:layout_width="0dp" android:layout_height="45dp" android:layout_weight="1" >
        <Button android:id="@+id/btn_tongxun" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="通讯录" android:visibility="gone"/>
    </LinearLayout>

    <LinearLayout android:id="@+id/mTab_set" android:layout_width="0dp" android:layout_height="45dp" android:layout_weight="1" >
        <Button android:id="@+id/btn_set" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="设置" android:visibility="gone"/>
    </LinearLayout>


</LinearLayout>

content.xml

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

    <TextView  android:id="@+id/textView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:textSize="25dp" android:text="content" />

</RelativeLayout>

friend_fragment.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:id="@+id/content_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="我是微信" android:textSize="65dp" />

</LinearLayout>

title.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="wrap_content" android:orientation="horizontal" android:background="#00ff00">

    <Button  android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="left" android:text="button" />

    <TextView  android:id="@+id/textView" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.hongyan" android:versionCode="1" android:versionName="1.0" >

    <uses-sdk  android:minSdkVersion="14" android:targetSdkVersion="21" />

    <application  android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" >
        <activity  android:name=".MainActivity" android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>