基于GridView和ActivityGroup实现的TAB分页(附源码)
基于GridView和ActivityGroup实现的TAB分页(附源码)
发布时间:2017-01-07 来源:查字典编辑
摘要: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...

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

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

复制代码 代码如下:

<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

复制代码 代码如下:

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

复制代码 代码如下:

<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

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