Android“第一次”app用户教程

package com.test.viewpager;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.onClickListener;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

public class WalkthroughActivity extends Activity {

    private static final int MAX_VIEWS = 5;

    ViewPager mViewPager;

    @Override
    protected void onCreate(Bundle savedInstanceStatE) {

        super.onCreate(savedInstanceStatE);
        setContentView(R.layout.walkthrough_activity);
        mViewPager = (ViewPager) findViewById(R.id.view_pager);
        mViewPager.setAdapter(new WalkthroughPagerAdapter());
        mViewPager.setOnPagechangelistener(new WalkthroughPagechangelistener());
    }


    class WalkthroughPagerAdapter extends PagerAdapter {

        @Override
        public int getCount() {
            return MAX_VIEWS;
        }

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

        @Override
        public Object instantiateItem(View container,int position) {
            Log.e("walkthrough","instantiateItem(" + position + ");");
            LayoutInflater inflater = (LayoutInflater) getSystemservice(Context.LAYOUT_INFLATER_serviCE);
            View imageViewContainer = inflater.inflate(R.layout.walkthrough_single_view,null);
            ImageView imageView = (ImageView) imageViewContainer.findViewById(R.id.image_view);

            switch(position) {
            case 0:
                imageView.setImageresource(R.drawable.image1);
                break;

            case 1:
                imageView.setImageresource(R.drawable.image2);
                break;

            case 2:
                imageView.setImageresource(R.drawable.image3);
                break;

            case 3:
                imageView.setImageresource(R.drawable.image4);
                break;

            case 4:
                imageView.setImageresource(R.drawable.image5);
                break;
            }

            ((ViewPager) container).addView(imageViewContainer,0);
            return imageViewContainer;
        }

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


    class WalkthroughPagechangelistener implements ViewPager.onPagechangelistener {

        @Override
        public void onPageScrollStateChanged(int arg0) {

        }

        @Override
        public void onPageScrolled(int arg0,float arg1,int arg2) {

        }

        @Override
        public void onPageSELEcted(int position) {
            // Here is where you should show change the view of page inDicator
            switch(position) {

            case MAX_VIEWS - 1:
                break;

            default:

            }

        }

    }
}@H_874_35@ 
 
这是我的walkthrough_activity.xml
 
  
 
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://scheR_299_11845@as.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <android.support.v4.view.ViewPager
        android:id="@+id/view_pager"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_above="@+id/screen_navigation_button" />

    <!--  This TextView will not swipe when you swipe in the ViewPager -->

    <TextView
        android:id="@id/screen_navigation_button"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:gravity="center"
        android:padding="10dip"
        android:text="Hello,Walkthrough!"
        android:textSize="18sp" />

</RelativeLayout>@H_874_35@ 
 
而walkthrough_single_view.xml就像这样简单 – 
 
  
 
<?xml version="1.0" encoding="utf-8"?>
<ImageView xmlns:android="http://scheR_299_11845@as.android.com/apk/res/android"
    android:id="@+id/image_view"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" />@H_874_35@ 
 
希望有帮助:)