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package cn.shangyu.gdxzExpert.view;
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import android.content.Context;
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import android.graphics.PointF;
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import android.os.Handler;
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import android.os.Message;
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import android.os.Parcelable;
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import android.text.TextUtils;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.ViewParent;
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import android.widget.ImageView;
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import android.widget.TextView;
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import com.nostra13.universalimageloader.core.ImageLoader;
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import java.util.ArrayList;
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import androidx.viewpager.widget.PagerAdapter;
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import androidx.viewpager.widget.ViewPager;
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import cn.shangyu.gdxzExpert.R;
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import cn.shangyu.gdxzExpert.utils.ImageOptions;
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import cn.shangyu.gdxzExpert.utils.LogUtil;
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public class RollViewPager extends ViewPager {
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private Context context;
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private int currentItem = Integer.MAX_VALUE / 2;
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private ArrayList<String> uriList;
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private ArrayList<View> dots;
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private TextView title;
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private ArrayList<String> titles;
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private int[] resImageIds;
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private int dot_focus_resId;
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private int dot_normal_resId;
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private OnPagerClickCallback onPagerClickCallback;
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private boolean isShowResImage = false;
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MyOnTouchListener myOnTouchListener;
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ViewPagerTask viewPagerTask;
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private PagerAdapter pageradapter;
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/** 触摸时按下的点 **/
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PointF downP = new PointF();
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/** 触摸时当前的点 **/
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PointF curP = new PointF();
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private int abc = 1;
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private float mLastMotionX;
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private float mLastMotionY;
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private long start = 0;
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public class MyOnTouchListener implements OnTouchListener {
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@Override
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public boolean onTouch(View v, MotionEvent event) {
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curP.x = event.getX();
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curP.y = event.getY();
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switch (event.getAction()) {
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case MotionEvent.ACTION_DOWN:
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start = System.currentTimeMillis();
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handler.removeCallbacksAndMessages(null);
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// 记录按下时候的坐标
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// 切记不可用 downP = curP ，这样在改变curP的时候，downP也会改变
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downP.x = event.getX();
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downP.y = event.getY();
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// 此句代码是为了通知他的父ViewPager现在进行的是本控件的操作，不要对我的操作进行干扰
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// getParent().requestDisallowInterceptTouchEvent(true);
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break;
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case MotionEvent.ACTION_MOVE:
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handler.removeCallbacks(viewPagerTask);
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LogUtil.i("ACTION_MOVE", (curP.x - downP.x) + "----"
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+ (curP.y - downP.y));
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/*
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* if (Math.abs(curP.x - downP.x) > Math.abs(curP.y - downP.y)
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* && (getCurrentItem() == 0 || getCurrentItem() == getAdapter()
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* .getCount() - 1)) {
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* getParent().requestDisallowInterceptTouchEvent(false); } else
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* { getParent().requestDisallowInterceptTouchEvent(false); }
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*/
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// 此句代码是为了通知他的父ViewPager现在进行的是本控件的操作，不要对我的操作进行干扰
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break;
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case MotionEvent.ACTION_CANCEL:
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getParent().requestDisallowInterceptTouchEvent(false);
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startRoll();
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break;
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case MotionEvent.ACTION_UP:
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downP.x = event.getX();
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downP.y = event.getY();
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long duration = System.currentTimeMillis() - start;
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if (duration <= 500 && downP.x == curP.x) {
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currentItem %= uriList.size();
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if (currentItem < 0) {
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currentItem = uriList.size() + currentItem;
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}
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onPagerClickCallback.onPagerClick(currentItem);
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} else {
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onPagerClickCallback.onPagerClick(RollViewPager.this
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.getCurrentItem());
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}
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startRoll();
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break;
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}
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return true;
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}
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}
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public boolean dispatchTouchEvent(MotionEvent ev) {
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final float x = ev.getX();
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final float y = ev.getY();
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switch (ev.getAction()) {
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case MotionEvent.ACTION_DOWN:
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getParent().requestDisallowInterceptTouchEvent(true);
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abc = 1;
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mLastMotionX = x;
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mLastMotionY = y;
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break;
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case MotionEvent.ACTION_MOVE:
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if (abc == 1) {
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if (Math.abs(x - mLastMotionX) < Math.abs(y - mLastMotionY)) {
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abc = 0;
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getParent().requestDisallowInterceptTouchEvent(false);
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} else {
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getParent().requestDisallowInterceptTouchEvent(true);
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}
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}
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break;
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case MotionEvent.ACTION_UP:
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case MotionEvent.ACTION_CANCEL:
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getParent().requestDisallowInterceptTouchEvent(false);
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break;
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}
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return super.dispatchTouchEvent(ev);
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}
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public class ViewPagerTask implements Runnable {
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@Override
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public void run() {
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// currentItem ++;
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// LogUtil.i("getCurrentItem="+RollViewPager.this.getCurrentItem());
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currentItem = RollViewPager.this.getCurrentItem() + 1;
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// currentItem = (currentItem + 1)
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// % (isShowResImage ? resImageIds.length : uriList.size());
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handler.obtainMessage().sendToTarget();
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// startRoll();
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}
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}
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public Handler handler = new Handler() {
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@Override
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public void handleMessage(Message msg) {
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RollViewPager.this.setCurrentItem(currentItem);
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startRoll();
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}
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};
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public RollViewPager(Context context, ArrayList<View> dots,
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int dot_focus_resId, int dot_normal_resId,
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OnPagerClickCallback onPagerClickCallback) {
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super(context);
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this.currentItem = 0;
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this.context = context;
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this.dots = dots;
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this.dot_focus_resId = dot_focus_resId;
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this.dot_normal_resId = dot_normal_resId;
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this.onPagerClickCallback = onPagerClickCallback;
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viewPagerTask = new ViewPagerTask();
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myOnTouchListener = new MyOnTouchListener();
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}
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public void setUriList(ArrayList<String> uriList) {
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isShowResImage = false;
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this.uriList = uriList;
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}
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public void notifyDataChange() {
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pageradapter.notifyDataSetChanged();
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}
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public ArrayList<View> getDots() {
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return dots;
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}
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public void setDots(ArrayList<View> dots) {
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this.dots = dots;
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}
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public void setResImageIds(int[] resImageIds) {
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isShowResImage = true;
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this.resImageIds = resImageIds;
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}
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public void setTitle(TextView title, ArrayList<String> titles) {
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this.title = title;
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this.titles = titles;
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if (title != null && titles != null && titles.size() > 0)
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title.setText(titles.get(0));//
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}
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private boolean hasSetAdapter = false;
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/**
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*
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*/
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public void startRoll() {
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handler.removeCallbacksAndMessages(null);
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if (!hasSetAdapter) {
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hasSetAdapter = true;
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pageradapter = new ViewPagerAdapter();
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this.setAdapter(pageradapter);
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// RollViewPager.this.setCurrentItem(Integer.MAX_VALUE/2 -
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// (Integer.MAX_VALUE/2%uriList.size()));
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// LogUtil.i("vvvvvvvvv="+(Integer.MAX_VALUE/2 -
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// (Integer.MAX_VALUE/2%uriList.size())));
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this.setOnPageChangeListener(new MyOnPageChangeListener());
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isRunning = true;
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}
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// LogUtil.i("sssss="+currentItem);
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// if (isRunning) {
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handler.postDelayed(viewPagerTask, 5000);
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// }
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}
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private boolean isRunning = false;
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public boolean isRunning() {
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return isRunning;
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}
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public void setRunning(boolean isRunning) {
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LogUtil.i("isRunning==" + isRunning);
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this.isRunning = isRunning;
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}
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class MyOnPageChangeListener implements OnPageChangeListener {
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int oldPosition = 0;
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@Override
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public void onPageSelected(int position) {
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// **********
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currentItem = position;
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position %= uriList.size();
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if (position < 0) {
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position = uriList.size() + position;
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}
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if (title != null)
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title.setText(titles.get(position));
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if (dots != null && dots.size() > 0) {
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dots.get(oldPosition).setBackgroundResource(dot_normal_resId);
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dots.get(position).setBackgroundResource(dot_focus_resId);
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}
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oldPosition = position;
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}
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@Override
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public void onPageScrollStateChanged(int state) {
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}
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@Override
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public void onPageScrolled(int arg0, float arg1, int arg2) {
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}
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}
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class ViewPagerAdapter extends PagerAdapter {
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@Override
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public int getCount() {
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// return isShowResImage ? resImageIds.length : uriList.size();
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// 设置成最大，使用户看不到边界
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return Integer.MAX_VALUE;
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}
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@Override
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public Object instantiateItem(View container, int position) {
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// 对ViewPager页号求模取出View列表中要显示的项
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position %= uriList.size();
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if (position < 0) {
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position = uriList.size() + position;
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}
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View view = View.inflate(context, R.layout.viewpager_item, null);
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// 如果View已经在之前添加到了一个父组件，则必须先remove，否则会抛出IllegalStateException。
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ViewParent vp = view.getParent();
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if (vp != null) {
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ViewGroup parent = (ViewGroup) vp;
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parent.removeView(view);
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}
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((ViewPager) container).addView(view);
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view.setOnTouchListener(myOnTouchListener);
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ImageView imageView = (ImageView) view.findViewById(R.id.image);
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imageView.setScaleType(ImageView.ScaleType.FIT_XY);
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if (isShowResImage) {
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imageView.setImageResource(resImageIds[position]);
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} else {
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if (!TextUtils.isEmpty(uriList.get(position))) {
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// 显示图片的配置
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// DisplayImageOptions options = new
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// DisplayImageOptions.Builder()
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// .showImageOnLoading(R.drawable.home_scroll_default)
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// .showImageOnFail(R.drawable.home_scroll_default)
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// .showImageForEmptyUri(R.drawable.home_scroll_default)
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// //加载失败的图片
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// .cacheInMemory(true)
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// .cacheOnDisk(true)
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// .bitmapConfig(Bitmap.Config.RGB_565)
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// .build();
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ImageLoader.getInstance().displayImage(uriList.get(position),imageView,ImageOptions.getImageOptions(R.drawable.home_scroll_default));
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}
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}
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return view;
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}
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@Override
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public boolean isViewFromObject(View arg0, Object arg1) {
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return arg0 == arg1;
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}
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@Override
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public void destroyItem(View arg0, int arg1, Object arg2) {
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((ViewPager) arg0).removeView((View) arg2);
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// Warning：不要在这里调用removeView
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}
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@Override
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public void finishUpdate(View arg0) {
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}
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@Override
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public void restoreState(Parcelable arg0, ClassLoader arg1) {
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}
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@Override
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public Parcelable saveState() {
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return null;
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}
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@Override
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public void startUpdate(View arg0) {
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}
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}
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// @Override
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// protected void onAttachedToWindow() {
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// // TODO Auto-generated method stub
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// super.onAttachedToWindow();
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// }
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// @Override
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// protected void onDetachedFromWindow() {
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// handler.removeCallbacksAndMessages(null);
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// super.onDetachedFromWindow();
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// }
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public void stopRunning() {
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if (viewPagerTask != null) {
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handler.removeCallbacks(viewPagerTask);
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handler.removeCallbacksAndMessages(null);
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}
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}
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public interface OnPagerClickCallback {
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public abstract void onPagerClick(int position);
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}
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}
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