Android ViewPager 基础（1）

1.activity_main.xml

<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

        <android.support.v4.view.ViewPager
        android:id="@+id/viewPager"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        >
        
        <android.support.v4.view.PagerTitleStrip
            android:id="@+id/title1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="top"
            >
        </android.support.v4.view.PagerTitleStrip>
    </android.support.v4.view.ViewPager>

</RelativeLayout>

2.input_record.xml

<?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:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_weight="1"
        android:gravity="center"
        android:text="收入" />

</LinearLayout>

3.expendituer.xml

<?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:id="@+id/textView3"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:text="转移" />

</LinearLayout>

4.MyPagerAdapter.java

package com.example.viewpagerdemo003;

import java.util.List;

import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;

public class MyPagerAdapter extends PagerAdapter  {

    private List<View> views = null;
    private List<String> titles = null ;
    public MyPagerAdapter(List<View> views,List<String>titles){
        this.views = views ;
        this.titles = titles;
    }
    
    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return views.size();
    }

    @Override
    public boolean isViewFromObject(View view, Object object) {
        // TODO Auto-generated method stub
        return view==object;
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        // TODO Auto-generated method stub
        container.addView(views.get(position));
        
        return views.get(position);
    }
    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        // TODO Auto-generated method stub
        container.removeView(views.get(position));
        super.destroyItem(container, position, object);
    }
    
    @Override
    public CharSequence getPageTitle(int position) {
        // TODO Auto-generated method stub
        return titles.get(position);
    }
}

5.MainActivity.java

package com.example.viewpagerdemo003;

import java.util.ArrayList;
import java.util.List;

import android.os.Bundle;
import android.app.Activity;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {

    private View addInputRecordView,addExpenditureRecordView,addTransferRecordView;
    private ViewPager viewPager ;
    private List<View> views ;
    private List<String> titles;
    private MyPagerAdapter myPagerAdapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        views = new ArrayList<View>();
        titles = new ArrayList<String>();
        
        viewPager = (ViewPager)this.findViewById(R.id.viewPager);
        
        LayoutInflater layoutInflater = getLayoutInflater();
        addInputRecordView = (View)layoutInflater.inflate(R.layout.input_record,null);
        addExpenditureRecordView = (View)layoutInflater.inflate(R.layout.expenditure_record, null);
        addTransferRecordView = (View)layoutInflater.inflate(R.layout.transfer_record, null);
        
        views.add(addInputRecordView);
        views.add(addExpenditureRecordView);
        views.add(addTransferRecordView);
        
        titles.add("收入");
        titles.add("支出");
        titles.add("转移");
        
        myPagerAdapter = new MyPagerAdapter(views,titles);
        viewPager.setAdapter(myPagerAdapter);
    }


    @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;
    }
    
}

 附：activity_main(1).xml.请改代码与activity_main.xml中的代码替换试试效果

<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

        <android.support.v4.view.ViewPager
        android:id="@+id/viewPager"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        >
        
        <android.support.v4.view.PagerTabStrip
            android:id="@+id/title1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="top"
            >
        </android.support.v4.view.PagerTabStrip>
    </android.support.v4.view.ViewPager>

</RelativeLayout>