Android scroll应用--仿高铁管家订单下拉与上拉

package com.example.customslidemenu.scrolltest; import android.content.Context; import android.graphics.Color; import android.util.AttributeSet; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.animation.BounceInterpolator; import android.view.animation.Interpolator; import android.widget.ImageView; import android.widget.RelativeLayout; import android.widget.Scroller; import com.example.customslidemenu.R; import com.example.customslidemenu.window.BaseTools; import com.example.customslidemenu.window.CurtainView; /** * Created by Administrator on 2017/1/9. */ public class CurtainView2 extends RelativeLayout implements View.OnTouchListener { private static String TAG = "CurtainView"; private Context mContext; /** Scroller 拖动类 */ private Scroller mScroller; /** 屏幕高度 */ private int mScreenHeigh = 0; /** 屏幕宽度 */ private int mScreenWidth = 0; /** 点击时候Y的坐标*/ private int downY = 0; /** 拖动时候Y的坐标*/ private int moveY = 0; /** 拖动时候Y的方向距离*/ private int scrollY = 0; /** 松开时候Y的坐标*/ private int upY = 0; /** 广告幕布的高度*/ private int curtainHeigh = 0; /** 是否 打开*/ private boolean isOpen = false; /** 是否在动画 */ private boolean isMove = false; /** 绳子的图片*/ private ImageView img_curtain_rope; /** 广告的图片*/ private ImageView img_curtain_ad; /** 上升动画时间 */ private int upDuration = 1000; /** 下落动画时间 */ private int downDuration = 500; public CurtainView2(Context context) { super(context); init(context); } public CurtainView2(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(context); } public CurtainView2(Context context, AttributeSet attrs) { super(context, attrs); init(context); } /** 初始化 */ private void init(Context context) { this.mContext = context; //Interpolator 设置为有反弹效果的 （Bounce：反弹） Interpolator interpolator = new BounceInterpolator(); mScroller = new Scroller(context, interpolator); mScreenHeigh = BaseTools.getWindowHeigh(context); mScreenWidth = BaseTools.getWindowWidth(context); // 背景设置成透明 this.setBackgroundColor(Color.argb(0, 0, 0, 0)); final View view = LayoutInflater.from(mContext).inflate(R.layout.curtain_layout2, null); img_curtain_ad = (ImageView)view.findViewById(R.id.img_curtain_ad); img_curtain_rope = (ImageView)view.findViewById(R.id.img_curtain_rope); addView(view); img_curtain_ad.post(new Runnable() { @Override public void run() { // TODO Auto-generated method stub curtainHeigh = img_curtain_ad.getHeight(); CurtainView2.this.scrollTo(0, -curtainHeigh); //开始时，将广告面板隐藏起来，身体下滑动广告高度 System.out.println("93------------mScreenHeigh:" + mScreenHeigh); System.out.println("94------------curtainHeigh: " + curtainHeigh); System.out.println("95------------getScrollY(): " + getScrollY()); } }); img_curtain_rope.setOnTouchListener(this); } /** * 拖动动画 * @param startY * @param dy 垂直距离, 滚动的y距离 * @param duration 时间 */ public void startMoveAnim(int startY, int dy, int duration) { isMove = true; mScroller.startScroll(0, startY, 0, dy, duration); invalidate();//通知UI线程的更新 } @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { // TODO Auto-generated method stub super.onLayout(changed, l, t, r, b); } @Override public void computeScroll() { //判断是否还在滚动，还在滚动为true if (mScroller.computeScrollOffset()) { scrollTo(mScroller.getCurrX(), mScroller.getCurrY()); //更新界面 postInvalidate(); isMove = true; } else { isMove = false; } super.computeScroll(); } @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub if (!isMove) { int offViewY = 0;//屏幕顶部和该布局顶部的距离 switch (event.getAction()) { case MotionEvent.ACTION_DOWN: downY = (int) event.getRawY(); offViewY = downY - (int)event.getY(); return true; case MotionEvent.ACTION_MOVE: moveY = (int) event.getRawY(); scrollY = moveY - downY; if (scrollY > 0) { // 手指向下滑动 if(isOpen){ if(scrollY <= curtainHeigh){ System.out.println("145-----------------down:"+scrollY+":isOpen:"+isOpen); scrollTo(0, -scrollY); } } } else { // 手指向上滑动，此时判断页面是否已经打开，如果没有打开 应该打开页面，同时需要判断极值点 if(!isOpen){ if(Math.abs(scrollY) <= curtainHeigh){ System.out.println("159------------"+(- curtainHeigh - scrollY)); scrollTo(0, - curtainHeigh - scrollY); } } } break; case MotionEvent.ACTION_UP: upY = (int) event.getRawY(); if(Math.abs(upY - downY) < 10){ onRopeClick(); break; } if (downY > upY) { // 向上滑动 if (Math.abs(scrollY) > curtainHeigh / 2) {// 向上滑动超过半个屏幕高的时候 打开 startMoveAnim(0, 0,upDuration); isOpen = true; } else { //否则，关闭 //startMoveAnim(0, -curtainHeigh,upDuration); System.out.println("181------------:"+this.getScrollY()); startMoveAnim(this.getScrollY(), (-curtainHeigh - this.getScrollY()),upDuration); isOpen = false; } } else { // 向下滑动 if (scrollY < curtainHeigh / 2) { // 向上打开视图 System.out.println("184---------------down_open"); //startMoveAnim(this.getScrollY(), -this.getScrollY(),upDuration); startMoveAnim(0, 0,upDuration); isOpen = true; } else { //向下滑动超过半个屏幕高的时候,向下关闭视图 System.out.println("184---------------down_close"); startMoveAnim(this.getScrollY(),(-curtainHeigh - this.getScrollY()), upDuration); //startMoveAnim(0, -curtainHeigh,upDuration); isOpen = false; } } break; default: break; } } return false; } /** * 点击绳索开关，会展开/关闭 * 在onToch中使用这个中的方法来当点击事件，避免了点击时候响应onTouch的衔接不完美的影响 */ public void onRopeClick(){ if(isOpen){ CurtainView2.this.startMoveAnim(0, -curtainHeigh, upDuration); //关闭 }else{ CurtainView2.this.startMoveAnim(0,0, upDuration); //打开 } isOpen = !isOpen; } }