ViewPager的使用2

1.布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="4"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.gst.user.application.TempActivity"
tools:showIn="@layout/activity_temp">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center_horizontal"
android:layout_weight="3.30"
android:orientation="horizontal">

<android.support.v4.view.ViewPager
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="100dp">

</android.support.v4.view.ViewPager>
</LinearLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#220000ff"
android:gravity="center"
android:orientation="horizontal"
android:layout_weight="0.09">

<ImageView
android:id="@+id/imageView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/login_point" />

<ImageView
android:id="@+id/imageView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/login_point" />

<ImageView
android:id="@+id/imageView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/login_point" />
</LinearLayout>
</LinearLayout>
2.继承PagerAdapter
package com.gst.user.application;

import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.view.ViewGroup;

import java.util.List;

/**
* Created by user on 1/25/16.
*/
public class ViewPagerAdapter extends PagerAdapter{

private Context mContext;
private List<View> mData;

public ViewPagerAdapter(Context mContext, List<View> mData) {
this.mContext = mContext;
this.mData = mData;
}

@Override
public int getCount() {
return mData.size();
}

@Override
public boolean isViewFromObject(View view, Object object) {
return view==object;
}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {
((ViewPager)container).removeView(mData.get(position));
}

@Override
public Object instantiateItem(ViewGroup container, int position) {
((ViewPager)container).addView(mData.get(position));
return mData.get(position);
}
}


3.绑定数据
package com.gst.user.application;

import android.app.AlertDialog;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.RemoteViews;

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

public class TempActivity extends AppCompatActivity implements ViewPager.OnPageChangeListener{

private static final String TAG = "TempActivity";
ViewPager viewPager;
LayoutInflater inflater;
int[] imageViewIds=new int[]{R.id.imageView3,R.id.imageView4,R.id.imageView5};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_temp);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});

initViews();
initDots(0);

}

private void initDots(int index) {
for (int i = 0; i < imageViewIds.length; i++) {
ImageView imageView=(ImageView)findViewById(imageViewIds[i]);
if (i == index) {
imageView.setImageResource(R.drawable.login_point_selected);
}else {
imageView.setImageResource(R.drawable.login_point);
}
}
}

private void initViews() {
viewPager=(ViewPager)findViewById(R.id.viewPager);
inflater=getLayoutInflater();
List<View> views=new ArrayList<View>();
views.add(inflater.inflate(R.layout.one,null));
views.add(inflater.inflate(R.layout.two,null));
views.add(inflater.inflate(R.layout.three, null));
ViewPagerAdapter adapter=new ViewPagerAdapter(this,views);
viewPager.setAdapter(adapter);
viewPager.setOnPageChangeListener(this);
}

@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

}

@Override
public void onPageSelected(int position) {
initDots(position);
}

@Override
public void onPageScrollStateChanged(int state) {

}
}