基于GridView和ActivityGroup实现的TAB分页(附源码)

分页大家都会用android的tabhost和tabactivity的组合，今天我这里实现的是gridview和activitygroup实现的分页，这里需要将activity转换成window，然后再换成成view添加到容器中，效果如下
 
1.布局文件底部放一个gridview,然后一个linearlayout容器在gridview之上，linearlayout用于装载activity的,这里布局位置错误，运行程序会抛异常，修改在下面

<relativelayout 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" >
<linearlayout
android:id="@+id/activity_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/gridview1"
android:layout_alignparenttop="true"
android:orientation="vertical" >
</linearlayout>
<gridview
android:id="@+id/gridview1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignparentbottom="true"
android:background="@drawable/navigationbardown"
android:cachecolorhint="@android:color/transparent"
android:gravity="center"
android:listselector="@android:color/transparent"
android:verticalspacing="0dip" >
</gridview>
</relativelayout>

2.接下来就是代码啦，我们需要设置gridview的列数mgridview.setnumcolumns(mimageids.length)，因为他只能显示一行，然后就是设置gridview点击高亮，每张图片的高亮图片都不一样的，然后就是点击不同的item进入不同的activity,我们先用到activitygroup里面的 public window startactivity(string id, intent intent) ，将activity转换成window，然后通过 public abstract view getdecorview()这个抽象方法将window转换成view,在添加到linearlayout容器中

package com.example.tabactivity;
import android.app.activitygroup;
import android.content.intent;
import android.os.bundle;
import android.view.view;
import android.view.viewgroup;
import android.view.viewgroup.layoutparams;
import android.widget.adapterview;
import android.widget.adapterview.onitemclicklistener;
import android.widget.baseadapter;
import android.widget.gridview;
import android.widget.imageview;
import android.widget.linearlayout;
public class testactivity extends activitygroup implements onitemclicklistener {
/**
* tab标签
*/
private gridview mgridview;
/**
* 普通图片id数组
*/
private int [] mimageids;
/**
* 高亮图片id数组
*/
private int [] mimagelightids;
/**
* gridview 适配器
*/
private imageadapter mimageadapter;
/**
* 装载activity的容器
*/
private linearlayout mlinearlayout;
@override
public void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_test);

mimageids = new int[]{r.drawable.home, r.drawable.task, r.drawable.addrbook, r.drawable.longnormal};
mimagelightids = new int[]{r.drawable.home1, r.drawable.taskhl, r.drawable.addrbook1, r.drawable.longhightlight};

mlinearlayout = (linearlayout) findviewbyid(r.id.activity_group);
mgridview = (gridview) findviewbyid(r.id.gridview1);
//因为我们显示一行，列数等于数组的长度
mgridview.setnumcolumns(mimageids.length);
mimageadapter = new imageadapter();
mgridview.setadapter(mimageadapter);
mgridview.setonitemclicklistener(this);

startactivity(0);
}


@override
public void onitemclick(adapterview<?> parent, view view, int position,
long id) {
//点击设置高亮显示
mimageadapter.setimagelight(position);
startactivity(position);
}

/**
* 根据position跳转到不同的activity
* @param id
*/
private void startactivity(int position){
//先清除容器里面的view
mlinearlayout.removeallviews();
intent intent = null;
if(position == 0){
intent = new intent(testactivity.this, activity_01.class);
}else if(position == 1){
intent = new intent(testactivity.this, activity_02.class);
}else if(position == 2){
intent = new intent(testactivity.this, activity_03.class);
}else if(position == 3){
intent = new intent(testactivity.this, activity_04.class);
}
intent.setflags(intent.flag_activity_clear_top);

//将activity转换成view
view view = getlocalactivitymanager().startactivity("intent", intent).getdecorview();
linearlayout.layoutparams layoutparams = new linearlayout.layoutparams(new linearlayout.layoutparams(layoutparams.fill_parent,
layoutparams.fill_parent));

//将activity转换成的view添加到容器
mlinearlayout.addview(view, layoutparams);
}

/**
* 图片适配器,没什么特别的，里面有一个设置高亮的方法比较重要
* @author mining
*
*/
private class imageadapter extends baseadapter{
private int currentitem;

/**
* 设置高亮显示
* @param currentitem
*/
public void setimagelight(int selectitem){
this.currentitem = selectitem;
notifydatasetchanged();
}
@override
public int getcount() {
return mimageids.length;
}
@override
public object getitem(int position) {
return mimageids[position];
}
@override
public long getitemid(int position) {
return position;
}
@override
public view getview(int position, view convertview, viewgroup parent) {
if(convertview == null){
convertview = new imageview(testactivity.this);
}
if(position == currentitem){
convertview.setbackgroundresource(mimagelightids[position]);
}else{
convertview.setbackgroundresource(mimageids[position]);
}

return convertview;
}


}
}

代码都上完了，是不是很简单的赶脚，短短的100多行的代码就实现了tab分页，上面有设置gridview高亮的方法，还不知道设置高亮的同学可以借鉴一下咯，呵呵， 写的不好，希望各位大牛指点指点！万分感谢
不好意思，上面的布局需要纠正下，位置放错了

<relativelayout 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" >
<gridview
android:id="@+id/gridview1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignparentbottom="true"
android:background="@drawable/navigationbardown"
android:cachecolorhint="@android:color/transparent"
android:gravity="center"
android:listselector="@android:color/transparent"
android:verticalspacing="0dip" >
</gridview>
<linearlayout
android:id="@+id/activity_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/gridview1"
android:layout_alignparenttop="true"
android:orientation="vertical" >
</linearlayout>
</relativelayout>

代码下载