Activity界面切换

主要思想：
<1>.先定义一个主界面，主界面分为上下两部分，上面存放切换显示的界面，下面存放五个点击事件的布局，当点击时，上面就会显示切换的Activity
<2>.定义五个点击事件的监听者，当点击事件被点击时，被点击事件的颜色改变，同时调用显示Activity界面的方法。
附源码：
<1>.主Activity代码
package com.example.mywanjuheng;

import com.example.mywanjuheng.R;
import android.app.Activity;
import android.app.ActivityGroup;
import android.app.LoaderManager;
import android.app.LocalActivityManager;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.View.OnTouchListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;

public class MainActivity extends ActivityGroup implements OnTouchListener {

private LinearLayout LinearLayout1,LinearLayout2,LinearLayout3,LinearLayout4,LinearLayout5;
private LinearLayout container;
private int tabPosition = 1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
     requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
       
        findView();
        setListener();
    }
    private void findView(){
    
     LinearLayout1 = (LinearLayout) findViewById(R.id.main_layout_vidicon);
     LinearLayout2 = (LinearLayout) findViewById(R.id.main_layout_alarm);
     LinearLayout3 = (LinearLayout) findViewById(R.id.main_layout_pic);
     LinearLayout4 = (LinearLayout) findViewById(R.id.main_layout_vid);
     LinearLayout5 = (LinearLayout) findViewById(R.id.main_layout_about);
     container = (LinearLayout) findViewById(R.id.container);
    }
private void setListener(){

LinearLayout1.setOnTouchListener(this);
LinearLayout2.setOnTouchListener(this);
LinearLayout3.setOnTouchListener(this);
LinearLayout4.setOnTouchListener(this);
LinearLayout5.setOnTouchListener(this);
}
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }