进阶篇－用户界面：11.启动界面和引导页面

SplashScreen.java

import java.io.File;
import java.io.OutputStream;

import com.baite.tools.AssetDatabaseManager;


import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.os.Handler;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;



public class SplashScreen extends Activity {
    
    /**
     * Called when the activity is first created.
     */
    private SharedPreferences preferences;  
     private Editor editor;  
      private OutputStream os;  

    @Override
    public void onCreate(Bundle icicle) {
        requestWindowFeature(Window.FEATURE_NO_TITLE);  //去掉活动上面的黑色bar
        super.onCreate(icicle);
        setContentView(R.layout.activity_splash_screen);
        
        
        preferences = getSharedPreferences("phone", Context.MODE_PRIVATE);  
           //判断是不是首次登录，  
           if (preferences.getBoolean("firststart", true)) { //这句没有符合判断 
               System.out.println("首次使用！");
               editor = preferences.edit();  
            //将登录标志位设置为false，下次登录时不在显示首次登录界面  
            editor.putBoolean("firststart", false);  
            editor.commit();  
            new Handler().postDelayed(new Runnable() {
                public void run() {
                    /* Create an Intent that will start the Main WordPress Activity. */
                    System.out.println("进入引导页面！");
                    AssetDatabaseManager.initManager(getApplication());
                     Intent intent = new Intent(SplashScreen.this,GuidPage.class);  
                     startActivity(intent);  
                     finish(); 
                    
                }
              }, 2900); //2900 for release
            
           }  
           else{
               new Handler().postDelayed(new Runnable() {
                   public void run() {
                       /* Create an Intent that will start the Main WordPress Activity. */
                       System.out.println("进入引导页面！");
                       AssetDatabaseManager.initManager(getApplication());
                        Intent intent = new Intent(SplashScreen.this,MainActivity.class);  
                        startActivity(intent);  
                        finish(); 
                       
                   }
                 }, 2900); //2900 for release
               System.out.println("不是首次使用！");
               
           }
             
  
    }

}

GuidePage.java

import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;

import com.baite.tools.ViewPagerAdapter;

import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.Window;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.LinearLayout;

public class GuidPage extends Activity implements OnPageChangeListener, OnClickListener {
     // 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<View> views;
    private View view;
    // 引导图片资源
    private static final int[] pics = { R.drawable.guide1, R.drawable.guide2,
            R.drawable.guide3, R.drawable.guide4 };
    // 底部小点的图片
    private ImageView[] points;
    // 记录当前选中位置
    private int currentIndex;
    

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        requestWindowFeature(Window.FEATURE_NO_TITLE);  //去掉活动上面的黑色bar
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_guid_page);
        
        /*Button newLife=(Button)findViewById(R.id.startnewlife);
         newLife.setOnClickListener(new OnClickListener() {
                
                @Override
                public void onClick(View arg0) {
                    // TODO Auto-generated method stub
                    Intent intent=new Intent(GuidPage.this,MainBord.class);    
                    GuidPage.this.startActivity(intent);
                }
            });*/
        //Button start =(Button)findViewById(R.id.guid2start);
        
        /*start.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(GuidPage.this,MainBord.class);
                GuidPage.this.startActivity(intent);
                GuidPage.this.finish();
                
            }
        });*/
        
        initView();
        initData();
        
    }
    public void writeFile(String fileName,String writestr) throws IOException{   //写文件
          try{   
          
                FileOutputStream fout =openFileOutput(fileName, MODE_PRIVATE);   
          
                byte [] bytes = writestr.getBytes();   
          
                fout.write(bytes);   
          
                fout.close();   
              }   
          
                catch(Exception e){   
                e.printStackTrace();   
               }   
        }
    
     /**
     * 初始化组件
     */
    private void initView() {
        // 实例化ArrayList对象
        views = new ArrayList<View>();
        // 实例化ViewPager
        viewPager = (ViewPager) findViewById(R.id.viewpager);
        // 实例化ViewPager适配器
        vpAdapter = new ViewPagerAdapter(views);
    }

    /**
     * 初始化数据
     */
    private void initData() {
        // 定义一个布局并设置参数
        LinearLayout.LayoutParams mParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.MATCH_PARENT);

        // 初始化引导图片列表
        for (int i = 0; i < pics.length-1; i++) {
            ImageView iv = new ImageView(this);
            iv.setLayoutParams(mParams);
            //防止图片不能填满屏幕
            iv.setScaleType(ScaleType.FIT_XY);
            //加载图片资源
            iv.setImageResource(pics[i]);
            views.add(iv);
        }
        
        LayoutInflater inflater = LayoutInflater.from(this);
        view=inflater.inflate(R.layout.last_page, null);
        views.add(view);
        
        Button newlife= (Button)view.findViewById(R.id.startnewlife);
        newlife.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(GuidPage.this,MainActivity.class);
                GuidPage.this.startActivity(intent);
                try {
                    writeFile("flag.txt", "WXDJGKFI78DKGPOK");
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                GuidPage.this.finish();
            }
        });
        
       

        // 设置数据
        viewPager.setAdapter(vpAdapter);
        // 设置监听
        viewPager.setOnPageChangeListener(this);

        // 初始化底部小点
        initPoint();
        
        
    }

    /**
     * 初始化底部小点
     */
    private void initPoint() {
        LinearLayout linearLayout = (LinearLayout) findViewById(R.id.ll);
        

        points = new ImageView[pics.length];

        // 循环取得小点图片
        for (int i = 0; i < pics.length; i++) {
            // 得到一个LinearLayout下面的每一个子元素
            points[i] = (ImageView) linearLayout.getChildAt(i);
            // 默认都设为灰色
            points[i].setEnabled(true);
            // 给每个小点设置监听
            points[i].setOnClickListener(this);
            // 设置位置tag，方便取出与当前位置对应
            points[i].setTag(i);
        }

        // 设置当面默认的位置
        currentIndex = 0;
        // 设置为白色，即选中状态
        points[currentIndex].setEnabled(false);
    }

    /**
     * 滑动状态改变时调用
     */
    
    public void onPageScrollStateChanged(int arg0) {

    }

    /**
     * 当前页面滑动时调用
     */
   
    public void onPageScrolled(int arg0, float arg1, int arg2) {

    }

    /**
     * 新的页面被选中时调用
     */
   
    public void onPageSelected(int arg0) {
        // 设置底部小点选中状态
        setCurDot(arg0);
    }

    public void onClick(View v) {
        int position = (Integer) v.getTag();
        setCurView(position);
        setCurDot(position);
    }

    /**
     * 设置当前页面的位置
     */
    private void setCurView(int position) {
        if (position < 0 || position >= pics.length) {
            return;
        }
        viewPager.setCurrentItem(position);
    }

    /**
     * 设置当前的小点的位置
     */
    private void setCurDot(int positon) {
        if (positon < 0 || positon > pics.length - 1 || currentIndex == positon) {
            return;
        }
        points[positon].setEnabled(false);
        points[currentIndex].setEnabled(true);

        currentIndex = positon;
    }

    

}

ViewPagerAdapter.java

package com.baite.tools;

import java.util.ArrayList;

import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
/**
 * 
 * @author YeChao
 * @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<View> views;  
    public ViewPagerAdapter(ArrayList<View> views)
    {
         this.views = views; 
    }
    
    /**
     * 获得当前界面数
     */
    @Override
    public int getCount() { 
         if (views != null) {  
             return views.size();  
         }        
         else return 0;  
    }

    /**
     * 判断是否由对象生成界面 
     */
    @Override
    public boolean isViewFromObject(View arg0, Object arg1) {
        return (arg0 == arg1);  
    }

    /**
     * 销毁position位置的界面 
     */
    @Override
    public void destroyItem(View container, int position, Object object) {
        ((ViewPager) container).removeView(views.get(position));     
    }

    /**
     * 初始化position位置的界面 
     */
    @Override
    public Object instantiateItem(View container, int position) {
        ((ViewPager) container).addView(views.get(position), 0);  
        return views.get(position);  
    }
    
}

activity_guid_page.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.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <LinearLayout
        android:id="@+id/ll"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="24.0dip"
        android:orientation="horizontal" >

        <ImageView
            android:listSelector="@drawable/selector"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:clickable="true"
            android:contentDescription="guid"
            android:padding="15.0dip"
            android:src="@drawable/selector" />
        

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:clickable="true"
            android:contentDescription="guid"
            android:padding="15.0dip"
            android:src="@drawable/selector" />

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:clickable="true"
            android:contentDescription="guid"
            android:padding="15.0dip"
            android:src="@drawable/selector" />

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:clickable="true"
            android:contentDescription="guid"
            android:padding="15.0dip"
            android:src="@drawable/selector" />
    </LinearLayout>

</RelativeLayout>