现在越来越多程序都有引导页面了。

网上资料不全。现在自己实现下。

下图是总的目录结构。

/**


 * 实现


 * @author dujinyang


 *


 */

android 引导界面的实现_viewpager



顺序是： OneAcitivity  -->MainActivity -> TwoActivity

然后第2次进去就是：OneActivity -> TwoActivity

代码里都有注释的了，这里就不多说了。



OneActivity的代码如下：

package cn.djy.activity;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;

/**
 * 开机动画
 * @author Administrator
 *
 */
public class OneActivity extends Activity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.one);
    
    boolean flag=this.isFirstEnter(getApplicationContext(), this.getClass().getName());
    if(flag)
      mHandler.sendEmptyMessageDelayed(SWITCH_GUIDACTIVITY,4000);
    else
      mHandler.sendEmptyMessageDelayed(SWITCH_TWOACTIVITY, 4000);
    
  }

  //***********************************************************************
  //判断应用是否初次加载，读取SharedPreferences 的字段
  //***********************************************************************
  private static final String SHAREDPREFERENCES_NAME="yang";
  private static final String KEY_GUIDE_ACTIVITY="Open";
  /**
   * mResultStr.equalsIgnoreCase("false") 返回FALSE
   * TRUE 则为空值
   * @param context
   * @param className
   * @return boolean
   */
  private boolean isFirstEnter(Context context,String className){
    if(context==null || className ==null || "".equalsIgnoreCase(className)) return false;
    String mResultStr=context.getSharedPreferences(SHAREDPREFERENCES_NAME,Context.MODE_WORLD_READABLE).getString(KEY_GUIDE_ACTIVITY, "");
    if(mResultStr.equalsIgnoreCase("false"))
      return false;
    else
      return true;
  }
  
  
  //****************************************
  //Handler:跳转至不同页面
  //****************************************
  private final static int SWITCH_TWOACTIVITY=1000; //主页
  
  private final static int SWITCH_GUIDACTIVITY=1001; //滑动手势
  private Handler mHandler=new Handler(){
    public void handleMessage(android.os.Message msg) {
      switch (msg.what) {
      case SWITCH_TWOACTIVITY:
          Intent intent=new Intent();
          intent.setClass(OneActivity.this,TwoActivity.class);
          OneActivity.this.startActivity(intent);
        //  OneActivity.this.finish();
        break;
      case SWITCH_GUIDACTIVITY:
          Intent intents=new Intent();
          intents.setClass(OneActivity.this,MainActivity.class);
          OneActivity.this.startActivity(intents);
        //  OneActivity.this.finish();
          break;
      }
      super.handleMessage(msg);
    };
  };
  
}



MainActivity的代码如下:

package cn.djy.activity;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TwoLineListItem;
/**
 * 实现
 * @author dujinyang
 *
 */
public class MainActivity extends Activity {
    
    private ViewPager _viewpager;
    
    /**
     * 分页显示的View数组
     */
    private ArrayList<View> _pagerlist;
    private ImageView image;
    
    /**
     * 小圆点的图片 放进数组
     */
    private ImageView[] _imageViews;
    
    //包裹滑动的图片Linearlayout
    private ViewGroup _group;
    
    //包裹小圆点的Linearlayout
    private ViewGroup _viewPonits;
    
    
    
    
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.start);
        
        LayoutInflater inflater=getLayoutInflater();
        _pagerlist =new ArrayList<View>();
        _pagerlist.add(inflater.inflate(R.layout.viewpager_page1,null));
        _pagerlist.add(inflater.inflate(R.layout.viewpager_page2,null));
        
        //创建Imageviews数组，大小是要显示的图片数量
        _imageViews =new ImageView[_pagerlist.size()];
        
        
        
//        ViewGroup 
        _group =(ViewGroup) inflater.inflate(R.layout.start, null);//加载MAIN.XML
        
        _viewPonits=(ViewGroup) _group.findViewById(R.id.icon_circle);//加载小圆点的图片
        
        _viewpager =(ViewPager) _group.findViewById(R.id.guidePages);//android.support.v4.view.ViewPager
        
        
        //添加小圆点的图片
        for (int i = 0; i < _imageViews.length; i++) {
             image= new ImageView(this);
             //设置小圆点的imageview的参数
             image.setLayoutParams(new LayoutParams(20,20));//宽高均为20
             image.setPadding(20, 0, 20, 0);
             _imageViews[i]=image;
             
             //第一张是选中状态
             if(i==0){
                 _imageViews[i].setBackgroundResource(R.drawable.a2a);
             }else{
                 _imageViews[i].setBackgroundResource(R.drawable.a1a);
             }
             _viewPonits.addView(_imageViews[i]);
        }
        //显示视图
        setContentView(_group);
        _viewpager.setAdapter(new GuidePageAdapter());
        _viewpager.setOnPageChangeListener(new GuidePageChangeListener());
    }
    
    
    void setGuided(){
        SharedPreferences shared=getSharedPreferences("yang",0);
        SharedPreferences.Editor editor=shared.edit();
        editor.putString("Open", "false");
        editor.commit();
    }
    
    class GuidePageAdapter extends PagerAdapter{

        @Override
        public int getCount() {
            return _pagerlist.size();
        }
        
        //initalization position page
        @Override
        public Object instantiateItem(View container, int position) {
            ((ViewPager)container).addView(_pagerlist.get(position));
            if(position==1){
                Button bt=(Button) container.findViewById(R.id.bt_close);
                bt.setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        //设置已经引导
                        setGuided();
                        //Intent 
                        Intent intent=new Intent();
                        intent.setClass(MainActivity.this,TwoActivity.class );
                        MainActivity.this.startActivity(intent);
                        MainActivity.this.finish();
                    }
                });
                
            }
            return _pagerlist.get(position);
        }
        
        
        //判断是否由对象生成页面
        @Override
        public boolean isViewFromObject(View view, Object obj) {
            return view==obj;
        }
        
        //销毁页面的位置
        @Override
        public void destroyItem(View container, int position, Object object) {
            ((ViewPager)container).removeView(_pagerlist.get(position));
        }
        
        
        @Override
        public void finishUpdate(View container) {
            //finish
        }
        
        @Override
        public void startUpdate(View container) {
            //start
        }
        
        @Override
        public int getItemPosition(Object object) {
            //getItemPosition
            return super.getItemPosition(object);
        }
        
        
        @Override
        public void restoreState(Parcelable state, ClassLoader loader) {
            super.restoreState(state, loader);
            //restore
        }
        
        @Override
        public Parcelable saveState() {
            return super.saveState();
            //save
        }
    }
    
    class GuidePageChangeListener implements OnPageChangeListener{

        @Override
        public void onPageScrollStateChanged(int arg0) {
            
        }

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

        @Override
        public void onPageSelected(int position) {
            for (int i = 0; i < _imageViews.length; i++) {
                    _imageViews[position].setBackgroundResource(R.drawable.a2a);
                    if(position!=i)
                        _imageViews[i].setBackgroundResource(R.drawable.a1a);
                    
            }
        }
        
    }
}



最后是TWOActivity：这个Activity是显示的内容。 


package cn.djy.activity;

import android.app.Activity;
import android.os.Bundle;

public class TwoActivity extends Activity{
  
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.end);
  }

}



主要代码完成。

里面涉及的drawable图片是小圆点图片。


下面贴出XML的。

start.xml

 

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
     <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:id="@+id/linear_viewpager">
     
        <android.support.v4.view.ViewPager  android:id="@+id/guidePages" android:layout_width="fill_parent"  android:layout_height="wrap_content"/>
     
     </LinearLayout>
     
     
     
     <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:id="@+id/linear_circle">
         
         <RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content" >
                <LinearLayout android:id="@+id/icon_circle" 
                              android:layout_width="fill_parent" 
                              android:layout_height="wrap_content" 
                              android:layout_marginBottom="40dip" 
                              android:layout_alignParentBottom="true" 
                              android:gravity="center_vertical"
                              android:orientation="horizontal"/>
         </RelativeLayout>
         
     </LinearLayout>
     
     
     
     
</FrameLayout>


其实是用Group把子项包起来作为显示：



那子项为：



viewpager_page1.xml 

<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:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="center" android:text="adfasfasfweqwwfqw'"
   />
 </LinearLayout>



viewpager_page2.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" 
  android:gravity="center">
  
  <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="pages222222222222222222"></TextView>
  
  <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="asdfi14234124" android:id="@+id/bt_close"></Button>
</LinearLayout>



总的代码完成。

希望大家互相学习 互相共享。