<?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="match_parent"

        android:layout_height="60dip"

        android:background="#8866ff00"

        android:gravity="center"

        android:text="程序锁"

        android:textSize="24sp" />

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:gravity="center_horizontal"

        android:orientation="horizontal" >

        <TextView

            android:id="@+id/tv_unlock"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:background="@drawable/tab_left_pressed"

            android:gravity="center"

            android:text="未加锁" />

        <TextView

            android:id="@+id/tv_lock"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:background="@drawable/tab_right_default"

            android:gravity="center"

            android:text="已加锁" />

    </LinearLayout>

    <FrameLayout

        android:id="@+id/fl_content"

        android:layout_width="match_parent"

        android:layout_height="match_parent" />

</LinearLayout>

package com.itheima.mobileguard.activities;

import com.itheima.mobileguard.R;

import com.itheima.mobileguard.fragment.LockFragment;

import com.itheima.mobileguard.fragment.UnLockFragment;

import android.os.Bundle;

import android.support.v4.app.FragmentActivity;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentTransaction;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.FrameLayout;

import android.widget.TextView;

public class AppLockActivity extends FragmentActivity implements

        OnClickListener {

    private FrameLayout fl_content;

    private TextView tv_unlock;

    private TextView tv_lock;

    private FragmentManager fragmentManager;

    private UnLockFragment unLockFragment;

    private LockFragment lockFragment;

    @Override

    protected void onCreate(Bundle arg0) {

        super.onCreate(arg0);

        initUI();

    }

    private void initUI() {

        setContentView(R.layout.activity_app_lock);

        fl_content = (FrameLayout) findViewById(R.id.fl_content);

        tv_unlock = (TextView) findViewById(R.id.tv_unlock);

        tv_lock = (TextView) findViewById(R.id.tv_lock);

        tv_unlock.setOnClickListener(this);

        tv_lock.setOnClickListener(this);

        //获取到fragment的管理者

        fragmentManager = getSupportFragmentManager();

        //开启事务

        FragmentTransaction mTransaction = fragmentManager.beginTransaction();

        unLockFragment = new UnLockFragment();

        lockFragment = new LockFragment();

        /**

         * 替换界面

         * 1 需要替换的界面的id

         * 2具体指某一个fragment的对象

         */

        mTransaction.replace(R.id.fl_content, unLockFragment).commit();

    }

    @Override

    public void onClick(View v) {

        FragmentTransaction ft = fragmentManager.beginTransaction();

        switch (v.getId()) {

        case R.id.tv_unlock:

            //没有加锁

            tv_unlock.setBackgroundResource(R.drawable.tab_left_pressed);

            tv_lock.setBackgroundResource(R.drawable.tab_right_default);

            ft.replace(R.id.fl_content, lockFragment);

            System.out.println("切换到lockFragment");

            break;

        case R.id.tv_lock:

            //没有加锁

            tv_unlock.setBackgroundResource(R.drawable.tab_left_default);

            tv_lock.setBackgroundResource(R.drawable.tab_right_pressed);

            ft.replace(R.id.fl_content, unLockFragment);

            System.out.println("切换到unlockFragment");

            break;

        }

        ft.commit();

    }

}