ViewPager和View组合 实现页面的切换
//--------------主页面-------------------------------
package com.bw.test;
import java.util.ArrayList;
import java.util.List;
import com.bw.test.adapter.MyViewPagerAdapter;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity implements OnClickListener {
private ViewPager vp;
private List<View> views=new ArrayList<View>();
private TextView tv_textview1;
private TextView tv_textview2;
private TextView tv_textview3;
private TextView tv_textview4;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//找到button按钮控件
tv_textview1 = (TextView) findViewById(R.id.tv_textview1);
tv_textview2 = (TextView) findViewById(R.id.tv_textview2);
tv_textview3 = (TextView) findViewById(R.id.tv_textview3);
tv_textview4 = (TextView) findViewById(R.id.tv_textview4);
//找到ViewPager控件
vp = (ViewPager) findViewById(R.id.vp);
//设置ViewPager的适配器
MyViewPagerAdapter adapter=new MyViewPagerAdapter(views, this);
vp.setAdapter(adapter);
//初始化view
initView();
//设置ViewPager滑动监听
vp.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
switch (arg0) {
case 0:
//设置textview的背景颜色
tv_textview1.setBackgroundColor(Color.RED);
tv_textview2.setBackgroundColor(Color.WHITE);
tv_textview3.setBackgroundColor(Color.WHITE);
tv_textview4.setBackgroundColor(Color.WHITE);
break;
case 1:
tv_textview1.setBackgroundColor(Color.WHITE);
tv_textview2.setBackgroundColor(Color.RED);
tv_textview3.setBackgroundColor(Color.WHITE);
tv_textview4.setBackgroundColor(Color.WHITE);
break;
case 2:
tv_textview1.setBackgroundColor(Color.WHITE);
tv_textview2.setBackgroundColor(Color.WHITE);
tv_textview3.setBackgroundColor(Color.RED);
tv_textview4.setBackgroundColor(Color.WHITE);
break;
case 3:
tv_textview1.setBackgroundColor(Color.WHITE);
tv_textview2.setBackgroundColor(Color.WHITE);
tv_textview3.setBackgroundColor(Color.WHITE);
tv_textview4.setBackgroundColor(Color.RED);
break;
default:
break;
}
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
});
//设置监听
tv_textview1.setOnClickListener(this);
tv_textview2.setOnClickListener(this);
tv_textview3.setOnClickListener(this);
tv_textview4.setOnClickListener(this);
//设置默认页面
tv_textview1.setBackgroundColor(Color.RED);
vp.setCurrentItem(0);
}
//初始化view
private void initView() {
//创建view布局
View view1=View.inflate(this, R.layout.view1, null);
View view2=View.inflate(this, R.layout.view2, null);
View view3=View.inflate(this, R.layout.view3, null);
View view4=View.inflate(this, R.layout.view4, null);
//把view布局添加到集合
views.add(view1);
views.add(view2);
views.add(view3);
views.add(view4);
}
@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;
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.tv_textview1:
vp.setCurrentItem(0);
break;
case R.id.tv_textview2:
vp.setCurrentItem(1);
break;
case R.id.tv_textview3:
vp.setCurrentItem(2);
break;
case R.id.tv_textview4:
vp.setCurrentItem(3);
break;
default:
break;
}
}
}
//=============主布局文件 main.xml===========================
<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"
>
<android.support.v4.view.ViewPager
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:id="@+id/vp"></android.support.v4.view.ViewPager>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="40dp"
android:text="首页"
android:gravity="center"
android:id="@+id/tv_textview1"/>
<TextView
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="40dp"
android:text="详情"
android:gravity="center"
android:id="@+id/tv_textview2"/>
<TextView
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="40dp"
android:text="购物车"
android:gravity="center"
android:id="@+id/tv_textview3"/>
<TextView
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="40dp"
android:text="我的"
android:gravity="center"
android:id="@+id/tv_textview4"/>
</LinearLayout>
</LinearLayout>
//============创建一个MyViewPagerAdapter，继承PagerAdapter并实现里面的方法=========================
package com.bw.test.adapter;
import java.util.List;
import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;
//创建一个MyViewPagerAdapter，继承PagerAdapter并实现里面的方法
public class MyViewPagerAdapter extends PagerAdapter{
private List<View> views;
private Context context;
//有参构造
public MyViewPagerAdapter(List<View> views, Context context) {
super();
this.views = views;
this.context = context;
}
//获得长度
@Override
public int getCount() {
return views.size();
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0==arg1;
}
//展示的view
@Override
public Object instantiateItem(ViewGroup container, int position) {
//获得展示的view
View view=views.get(position);
//添加到容器
container.addView(view);
//返回显示的view
return view;
}
//销毁view
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
//从容器中移除view
container.removeView((View) object);
}
}
//============创建 view1.xml 布局文件 这里我只给了一个背景颜色==========================
<?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"
android:background="#ff00ff">
</LinearLayout>
//=======创建 view2 .xml 布局文件 这里我只给了一个背景颜色===========================
<?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"
android:background="#ffff00" >
</LinearLayout>
//=====创建 view3.XML 布局文件 这里我只给了一个背景颜色===================
<?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"
android:background="#0000ff" >
</LinearLayout>
//=========创建 view4.XML 布局文件 这里我只给了一个背景颜色=================
<?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"
android:background="#00ffff" >
</LinearLayout>
//=======完了，做完之后就是页面的切换========
