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package com.example.guidepagetest2;
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.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.ImageView;
public class GuideActivity extends Activity {
private ViewPager viewPager;
/**装分页显示的view的数组*/
private ArrayList<View> pageViews;
private ImageView imageView;
/**将小圆点的图片用数组表示*/
private ImageView[] imageViews;
//包裹滑动图片的LinearLayout
private ViewGroup viewPics;
//包裹小圆点的LinearLayout
private ViewGroup viewPoints;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//将要分页显示的View装入数组中
LayoutInflater inflater = getLayoutInflater();
pageViews = new ArrayList<View>();
pageViews.add(inflater.inflate(R.layout.viewpager_page1, null));
pageViews.add(inflater.inflate(R.layout.viewpager_page2, null));
//创建imageviews数组，大小是要显示的图片的数量
imageViews = new ImageView[pageViews.size()];
//从指定的XML文件加载视图
viewPics = (ViewGroup) inflater.inflate(R.layout.activity_guide, null);
//实例化小圆点的linearLayout和viewpager
viewPoints = (ViewGroup) viewPics.findViewById(R.id.viewGroup);
viewPager = (ViewPager) viewPics.findViewById(R.id.guidePages);
//添加小圆点的图片
for(int i=0;i<pageViews.size();i++){
imageView = new ImageView(GuideActivity.this);
//设置小圆点imageview的参数
imageView.setLayoutParams(new LayoutParams(20,20));//创建一个宽高均为20 的布局
imageView.setPadding(20, 0, 20, 0);
//将小圆点layout添加到数组中
imageViews[i] = imageView;
//默认选中的是第一张图片，此时第一个小圆点是选中状态，其他不是
if(i==0){
imageViews[i].setBackgroundResource(R.drawable.page_indicator_focused);
}else{
imageViews[i].setBackgroundResource(R.drawable.page_indicator);
}
//将imageviews添加到小圆点视图组
viewPoints.addView(imageViews[i]);
}
//显示滑动图片的视图
setContentView(viewPics);
//设置viewpager的适配器和监听事件
viewPager.setAdapter(new GuidePageAdapter());
viewPager.setOnPageChangeListener(new GuidePageChangeListener());
}
private Button.OnClickListener Button_OnClickListener = new Button.OnClickListener() {
public void onClick(View v) {
//设置已经引导
setGuided();
//跳转
Intent mIntent = new Intent();
mIntent.setClass(GuideActivity.this, MainActivity.class);
GuideActivity.this.startActivity(mIntent);
GuideActivity.this.finish();
}
};
private static final String SHAREDPREFERENCES_NAME = "my_pref";
private static final String KEY_GUIDE_ACTIVITY = "guide_activity";
private void setGuided(){
SharedPreferences settings = getSharedPreferences(SHAREDPREFERENCES_NAME, 0);
SharedPreferences.Editor editor = settings.edit();
editor.putString(KEY_GUIDE_ACTIVITY, "false");
editor.commit();
}
class GuidePageAdapter extends PagerAdapter{
//销毁position位置的界面
@Override
public void destroyItem(View v, int position, Object arg2) {
// TODO Auto-generated method stub
((ViewPager)v).removeView(pageViews.get(position));
}
@Override
public void finishUpdate(View arg0) {
// TODO Auto-generated method stub
}
//获取当前窗体界面数
@Override
public int getCount() {
// TODO Auto-generated method stub
return pageViews.size();
}
//初始化position位置的界面
@Override
public Object instantiateItem(View v, int position) {
// TODO Auto-generated method stub
((ViewPager) v).addView(pageViews.get(position));
// 测试页卡1内的按钮事件
if (position == 1) {
Button btn = (Button) v.findViewById(R.id.btn_close_guide);
btn.setOnClickListener(Button_OnClickListener);
}
return pageViews.get(position);
}
// 判断是否由对象生成界面
@Override
public boolean isViewFromObject(View v, Object arg1) {
// TODO Auto-generated method stub
return v == arg1;
}
@Override
public void startUpdate(View arg0) {
// TODO Auto-generated method stub
}
@Override
public int getItemPosition(Object object) {
// TODO Auto-generated method stub
return super.getItemPosition(object);
}
@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
// TODO Auto-generated method stub
}
@Override
public Parcelable saveState() {
// TODO Auto-generated method stub
return null;
}
}
class GuidePageChangeListener implements OnPageChangeListener{
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageSelected(int position) {
// TODO Auto-generated method stub
for(int i=0;i<imageViews.length;i++){
imageViews[position].setBackgroundResource(R.drawable.page_indicator_focused);
//不是当前选中的page，其小圆点设置为未选中的状态
if(position !=i){
imageViews[i].setBackgroundResource(R.drawable.page_indicator);
}
}
}
}
}
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