Fragment 实现微信Tab显示

分别使用了ViewPager和Fragment来实现Tab。实现思路基本差不多 都是定义几个不同的布局文件 进行加载。分别最终结果都已经实现 但是还有些许不同：
1.View Pager实现的Tab可以直接重写左右滑动 Fragment没。
2.ViewPager所有的布局文件都在activity中进行初始化，List的声明 事件的处理均在activity中体现 造成代码过多，不易改善维护
3.Fragment管理自己的布局，每个页面布局中的元素+事件都由自己处理，activity起到一个调度的作用，activity代码少方便管理。PS：Fragment在不同屏幕分辨率适配有得天独厚的优势。

**码中出错：fragment引入包的时候一定要统一 否则运行时 不显示。现在fragment两个版本：普通fragment包和V4包。**

Activity代码：

package cc.myfragment;

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

public class MainActivity extends Activity implements View.OnClickListener{

    private Fragment mFragment;

    private LinearLayout mLayoutweixin,mLayoutfriend,mLayoutaddress,mLayoutsetting;

    private ImageButton weixin_img,friend_img,address_img,setting_img;

    private Fragment tab01,tab02,tab03,tab04;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);

        InitView();

        InitEvent();

        setSelect(0);
    }


    private void resetImageBtn() {
        weixin_img.setImageResource(R.drawable.tab_weixin_normal);
        friend_img.setImageResource(R.drawable.tab_find_frd_normal);
        address_img.setImageResource(R.drawable.tab_address_normal);
        setting_img.setImageResource(R.drawable.tab_settings_normal);
    }

    private void InitEvent() {
        mLayoutweixin.setOnClickListener(this);
        mLayoutfriend.setOnClickListener(this);
        mLayoutaddress.setOnClickListener(this);
        mLayoutsetting.setOnClickListener(this);

    }

    private void InitView() {

        mLayoutweixin=(LinearLayout)findViewById(R.id.tab_weixin);
        mLayoutfriend=(LinearLayout)findViewById(R.id.tab_friend);
        mLayoutaddress=(LinearLayout)findViewById(R.id.tab_address);
        mLayoutsetting=(LinearLayout)findViewById(R.id.tab_setting);

        weixin_img=(ImageButton)findViewById(R.id.tab_weixinimg);
        friend_img=(ImageButton)findViewById(R.id.tab_friendimg);
        address_img=(ImageButton)findViewById(R.id.tab_addressimg);
        setting_img=(ImageButton)findViewById(R.id.tab_settingimg);
    }

    @Override
    public void onClick(View view) {
        resetImageBtn();
        switch (view.getId()){
            case R.id.tab_weixin:
                setSelect(0);
                weixin_img.setImageResource(R.drawable.tab_weixin_pressed);
                break;
            case R.id.tab_friend:
                setSelect(1);
                friend_img.setImageResource(R.drawable.tab_find_frd_pressed);
                break;
            case R.id.tab_address:
                setSelect(2);
                address_img.setImageResource(R.drawable.tab_address_pressed);
                break;
            case R.id.tab_setting:
                setSelect(3);
                setting_img.setImageResource(R.drawable.tab_settings_pressed);
                break;
        }
    }

    private void hideAllFragment(FragmentTransaction transaction) {
        if(tab01!=null){
            transaction.hide(tab01);
        }
        if(tab02!=null){
            transaction.hide(tab02);
        }
        if(tab03!=null){
            transaction.hide(tab03);
        }
        if(tab04!=null){
            transaction.hide(tab04);
        }
    }

    private void setSelect(int i){
        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction transaction = fragmentManager.beginTransaction();
        hideAllFragment(transaction);

        switch (i){
            case 0:
                if(tab01==null)
                {
                    tab01=new weixin_fragment();
                    transaction.add(R.id.fragment,tab01);
                }else{
                    transaction.show(tab01);
                }
                break;
            case 1:
                if(tab02==null)
                {
                    tab02=new friend_fragment();
                    transaction.add(R.id.fragment,tab02);
                }else{
                    transaction.show(tab02);
                }
                break;
            case 2:
                if(tab03==null)
                {
                    tab03=new address_fragment();
                    transaction.add(R.id.fragment,tab03);
                }else{
                    transaction.show(tab03);
                }
                break;
            case 3:
                if(tab04==null)
                {
                    tab04=new setting_fragment();
                    transaction.add(R.id.fragment,tab04);
                }else{
                    transaction.show(tab04);
                }
                break;
        }
        transaction.commit();
    }
}

Fragment页面代码：

package cc.myfragment;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
 * Created by Administrator on 2016/8/15.
 */
public class weixin_fragment extends android.app.Fragment {
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view=inflater.inflate(R.layout.tab01,container,false);
        return view;
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="cc.myfragment.MainActivity">
    <include layout="@layout/top"></include>
    <FrameLayout
        android:id="@+id/fragment"
        android:layout_width="match_parent"
        android:layout_weight="1"
        android:layout_height="0dp"></FrameLayout>
    <include layout="@layout/bottom"></include>
</LinearLayout>