AndroidUI设计与开发之实现应用程序只启动一次引导界面

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package com.yangyu.myguideview04; 
 
import java.util.ArrayList; 
 
import android.support.v4.view.PagerAdapter; 
import android.support.v4.view.ViewPager; 
import android.view.View; 
 
/** 
 * @author yangyu 
 * 功能描述：ViewPager适配器，用来绑定数据和view 
 */ 
public class ViewPagerAdapter extends PagerAdapter { 
  
 //界面列表 
 private ArrayList views; 
  
 public ViewPagerAdapter (ArrayList views){ 
  this.views = views; 
 } 
   
 /** 
  * 获得当前界面数 
  */ 
 @Override 
 public int getCount() { 
   if (views != null) { 
    return views.size(); 
   }  
   return 0; 
 } 
 
 /** 
  * 初始化position位置的界面 
  */ 
 @Override 
 public Object instantiateItem(View view, int position) { 
   
  ((ViewPager) view).addView(views.get(position), 0); 
   
  return views.get(position); 
 } 
  
 /** 
  * 判断是否由对象生成界面 
  */ 
 @Override 
 public boolean isViewFromObject(View view, Object arg1) { 
  return (view == arg1); 
 } 
 
 /** 
  * 销毁position位置的界面 
  */ 
 @Override 
 public void destroyItem(View view, int position, Object arg2) { 
  ((ViewPager) view).removeView(views.get(position));   
 } 
} 

package com.yangyu.myguideview04; 
 
import java.util.ArrayList; 
 
import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
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.widget.Button; 
 
/** 
 * @author yangyu 
 * 功能描述：引导界面activity类 
 */ 
public class GuideActivity extends Activity implements OnPageChangeListener{ 
 // 定义ViewPager对象 
 private ViewPager viewPager; 
 
 // 定义ViewPager适配器 
 private ViewPagerAdapter vpAdapter; 
 
 // 定义一个ArrayList来存放View 
 private ArrayList views; 
 
 // 定义各个界面View对象 
 private View view1, view2, view3, view4; 
  
 //定义开始按钮对象 
 private Button startBt; 
   
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.activity_guide); 
   
  initView(); 
   
  initData(); 
 } 
 
 /** 
  * 初始化组件 
  */ 
 private void initView() { 
  //实例化各个界面的布局对象 
  LayoutInflater mLi = LayoutInflater.from(this); 
  view1 = mLi.inflate(R.layout.guide_view01, null); 
  view2 = mLi.inflate(R.layout.guide_view02, null); 
  view3 = mLi.inflate(R.layout.guide_view03, null); 
  view4 = mLi.inflate(R.layout.guide_view04, null); 
  
  // 实例化ViewPager 
  viewPager = (ViewPager) findViewById(R.id.viewpager); 
 
  // 实例化ArrayList对象 
  views = new ArrayList(); 
 
  // 实例化ViewPager适配器 
  vpAdapter = new ViewPagerAdapter(views); 
   
  //实例化开始按钮 
  startBt = (Button) view4.findViewById(R.id.startBtn); 
 } 
 
 /** 
  * 初始化数据 
  */ 
 private void initData() { 
  // 设置监听 
  viewPager.setOnPageChangeListener(this); 
  // 设置适配器数据 
  viewPager.setAdapter(vpAdapter); 
 
  //将要分页显示的View装入数组中  
  views.add(view1); 
  views.add(view2); 
  views.add(view3); 
  views.add(view4);   
         
  // 给开始按钮设置监听 
  startBt.setOnClickListener(new OnClickListener() { 
   @Override 
   public void onClick(View v) { 
     startbutton(); 
   } 
  }); 
 } 
 
 @Override 
 public void onPageScrollStateChanged(int arg0) { 
    
 } 
 
 @Override 
 public void onPageScrolled(int arg0, float arg1, int arg2) { 
   
 } 
 
 @Override 
 public void onPageSelected(int arg0) { 
   
 } 
  
 /** 
  * 相应按钮点击事件 
  */ 
 private void startbutton() { 
  Intent intent = new Intent(); 
  intent.setClass(GuideActivity.this,MainActivity.class); 
  startActivity(intent); 
  this.finish(); 
  } 
｝ 

package com.yangyu.myguideview04; 
 
import android.app.Activity; 
import android.content.Intent; 
import android.content.SharedPreferences; 
import android.content.SharedPreferences.Editor; 
import android.os.Bundle; 
 
/** 
 * @author yangyu 
 * 功能描述：欢迎界面 
 */ 
public class Welcome extends Activity implements Runnable { 
  
 //是否是第一次使用 
 private boolean isFirstUse; 
  
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.activity_welcome); 
  /** 
   * 启动一个延迟线程 
   */ 
  new Thread(this).start(); 
 } 
 
 public void run() { 
  try { 
   /** 
    * 延迟两秒时间 
    */ 
   Thread.sleep(2000); 
    
   //读取SharedPreferences中需要的数据 
   SharedPreferences preferences = getSharedPreferences("isFirstUse",MODE_WORLD_READABLE); 
 
   isFirstUse = preferences.getBoolean("isFirstUse", true); 
 
   /** 
    *如果用户不是第一次使用则直接调转到显示界面,否则调转到引导界面 
    */ 
   if (isFirstUse) { 
    startActivity(new Intent(Welcome.this, GuideActivity.class)); 
   } else { 
    startActivity(new Intent(Welcome.this, MainActivity.class)); 
   } 
   finish(); 
    
   //实例化Editor对象 
   Editor editor = preferences.edit(); 
   //存入数据 
   editor.putBoolean("isFirstUse", false); 
   //提交修改 
   editor.commit(); 
 
 
  } catch (InterruptedException e) { 
 
  } 
 } 
} 

package com.yangyu.myguideview04; 
 
import android.app.Activity; 
import android.os.Bundle; 
 
/** 
 * @author yangyu 
 * 功能描述：主程序入口类页面 
 */ 
public class MainActivity extends Activity { 
 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.activity_main); 
 } 
  
}