文章出处：
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 * */
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 _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 (); _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
其实是用Group把子项包起来作为显示：
那子项为：
viewpager_page1.xml
viewpager_page2.xml
总的代码完成。
希望大家互相学习 互相共享。