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最新评论
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Memories_NC:
本地lua脚本终于执行成功了,虽然不是通过redis
java中调用lua脚本语言1 -
ZHOU452840622:
大神://处理返回的接收状态 这个好像没有监听到 遇 ...
android 发送短信的两种方式 -
PXY:
拦截部分地址,怎么写的for(int i=0;i<lis ...
判断是否登录的拦截器SessionFilter -
maotou1988:
Android控件之带清空按钮(功能)的AutoComplet ...
自定义AutoCompleteTextView -
yangmaolinpl:
希望有表例子更好。。。,不过也看明白了。
浅谈onInterceptTouchEvent、onTouchEvent与onTouch
比较常用的效果,有现成的,如此甚好!:)
http://www.open-open.com/lib/view/open1482476959653.html
自定义商品详情页
http://blog.csdn.net/qq_22271479/article/details/68490868
import android.content.Context; import android.content.res.TypedArray; import android.support.v4.view.ViewCompat; import android.support.v4.view.ViewPager; import android.util.AttributeSet; import android.view.MotionEvent; import android.view.VelocityTracker; import android.view.View; import android.view.ViewConfiguration; import android.view.ViewGroup; import android.view.animation.DecelerateInterpolator; import android.widget.LinearLayout; import android.widget.Scroller; import com.snail.labaffinity.R; import com.snail.labaffinity.adapter.SlideFragmentPagerAdapter; /** * 1 ViewPager+TabLayout as content * 2 FragmentTabHost+Fragment as content * 3 bug :can not assertain which View is inTouch */ public class DragScrollDetailsLayout extends LinearLayout { public interface OnSlideFinishListener { void onStatueChanged(CurrentTargetIndex status); } public enum CurrentTargetIndex { UPSTAIRS, DOWNSTAIRS; public static CurrentTargetIndex valueOf(int index) { return 1 == index ? DOWNSTAIRS : UPSTAIRS; } } private static final float DEFAULT_PERCENT = 0.3f; private static final int DEFAULT_DURATION = 400; private int mMaxFlingVelocity; private int mMiniFlingVelocity; private int mDefaultPanel = 0; private int mDuration = DEFAULT_DURATION; private float mTouchSlop; private float mDownMotionY; private float mDownMotionX; private float mInitialInterceptY; public void setPercent(float percent) { mPercent = percent; } private float mPercent = DEFAULT_PERCENT; /** * flag for listview or scrollview ,if child overscrolled ,do not judge view region 滚过头了,还是可以滚动 */ private boolean mChildHasScrolled; private View mUpstairsView; private View mDownstairsView; private View mCurrentTargetView; private Scroller mScroller; private VelocityTracker mVelocityTracker; private OnSlideFinishListener mOnSlideDetailsListener; private CurrentTargetIndex mCurrentViewIndex = CurrentTargetIndex.UPSTAIRS; public DragScrollDetailsLayout(Context context) { this(context, null); } public DragScrollDetailsLayout(Context context, AttributeSet attrs) { this(context, attrs, 0); } public DragScrollDetailsLayout(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.DragScrollDetailsLayout, defStyleAttr, 0); mPercent = a.getFloat(R.styleable.DragScrollDetailsLayout_percent, DEFAULT_PERCENT); mDuration = a.getInt(R.styleable.DragScrollDetailsLayout_duration, DEFAULT_DURATION); mDefaultPanel = a.getInt(R.styleable.DragScrollDetailsLayout_default_panel, 0); a.recycle(); mScroller = new Scroller(getContext(),new DecelerateInterpolator()); mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop(); mMaxFlingVelocity = ViewConfiguration.get(getContext()).getScaledMaximumFlingVelocity(); mMiniFlingVelocity = ViewConfiguration.get(getContext()).getScaledMinimumFlingVelocity(); setOrientation(VERTICAL); } public void setOnSlideDetailsListener(OnSlideFinishListener listener) { this.mOnSlideDetailsListener = listener; } @Override protected void onFinishInflate() { super.onFinishInflate(); final int childCount = getChildCount(); if (1 >= childCount) { throw new RuntimeException("SlideDetailsLayout only accept childs more than 1!!"); } mUpstairsView = getChildAt(0); mDownstairsView = getChildAt(1); } /** * requestDisallowInterceptTouchEvent guarantee DragScrollDetailsLayout intercept event as wish */ @Override public boolean dispatchTouchEvent(MotionEvent ev) { requestDisallowInterceptTouchEvent(false); return super.dispatchTouchEvent(ev); } /** * intercept rules: * 1. The vertical displacement is larger than the horizontal displacement; * 2. Panel stauts is UPSTAIRS: slide up * 3. Panel status is DOWNSTAIRS:slide down * 4. child can requestDisallowInterceptTouchEvent(); */ @Override public boolean onInterceptTouchEvent(MotionEvent ev) { switch (ev.getActionMasked()) { case MotionEvent.ACTION_DOWN: mDownMotionX = ev.getX(); mDownMotionY = ev.getY(); if (mVelocityTracker == null) { mVelocityTracker = VelocityTracker.obtain(); } mVelocityTracker.clear(); mChildHasScrolled=false; break; case MotionEvent.ACTION_MOVE: adjustValidDownPoint(ev); return checkCanInterceptTouchEvent(ev); default: break; } return false; } @Override public boolean onTouchEvent(MotionEvent ev) { switch (ev.getActionMasked()) { case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: flingToFinishScroll(); recycleVelocityTracker(); break; case MotionEvent.ACTION_MOVE: scroll(ev); break; default: break; } return true; } private boolean checkCanInterceptTouchEvent(MotionEvent ev) { final float xDiff = ev.getX() - mDownMotionX; final float yDiff = ev.getY() - mDownMotionY; if (!canChildScrollVertically((int) yDiff,ev)) { mInitialInterceptY = (int) ev.getY(); if (Math.abs(yDiff) > mTouchSlop && Math.abs(yDiff) >= Math.abs(xDiff) && !(mCurrentViewIndex == CurrentTargetIndex.UPSTAIRS && yDiff > 0 || mCurrentViewIndex == CurrentTargetIndex.DOWNSTAIRS && yDiff < 0)) { return true; } } return false; } private void adjustValidDownPoint(MotionEvent event) { if (mCurrentViewIndex == CurrentTargetIndex.UPSTAIRS && event.getY() > mDownMotionY || mCurrentViewIndex == CurrentTargetIndex.DOWNSTAIRS && event.getY() < mDownMotionY) { mDownMotionX = event.getX(); mDownMotionY = event.getY(); } } private void scroll(MotionEvent event) { if (mCurrentViewIndex == CurrentTargetIndex.UPSTAIRS) { if (getScrollY() <= 0 && event.getY() > mInitialInterceptY) { mInitialInterceptY = (int) event.getY(); } scrollTo(0, (int) (mInitialInterceptY - event.getY())); } else { if (getScrollY() >= mUpstairsView.getMeasuredHeight() && event.getY() < mInitialInterceptY) { mInitialInterceptY = (int) event.getY(); } scrollTo(0, (int) (mInitialInterceptY - event.getY() + mUpstairsView.getMeasuredHeight())); } mVelocityTracker.addMovement(event); } private void recycleVelocityTracker() { if (mVelocityTracker != null) { mVelocityTracker.clear(); mVelocityTracker.recycle(); mVelocityTracker = null; } } /** * if speed is enough even though offset is not enough go */ private void flingToFinishScroll() { final int pHeight = mUpstairsView.getMeasuredHeight(); final int threshold = (int) (pHeight * mPercent); float scrollY = getScrollY(); if (CurrentTargetIndex.UPSTAIRS == mCurrentViewIndex) { if (scrollY <= 0) { scrollY = 0; } else if (scrollY <= threshold) { if (needFlingToToggleView()) { scrollY = pHeight - getScrollY(); mCurrentViewIndex = CurrentTargetIndex.DOWNSTAIRS; } else scrollY = -getScrollY(); } else { scrollY = pHeight - getScrollY(); mCurrentViewIndex = CurrentTargetIndex.DOWNSTAIRS; } } else if (CurrentTargetIndex.DOWNSTAIRS == mCurrentViewIndex) { if (pHeight - scrollY <= threshold) { if (needFlingToToggleView()) { scrollY = -getScrollY(); mCurrentViewIndex = CurrentTargetIndex.UPSTAIRS; } else scrollY = pHeight - scrollY; } else if (scrollY < pHeight) { scrollY = -getScrollY(); mCurrentViewIndex = CurrentTargetIndex.UPSTAIRS; } } mScroller.startScroll(0, getScrollY(), 0, (int) scrollY, mDuration); if (mOnSlideDetailsListener != null) { mOnSlideDetailsListener.onStatueChanged(mCurrentViewIndex); } postInvalidate(); } private boolean needFlingToToggleView() { mVelocityTracker.computeCurrentVelocity(1000, mMaxFlingVelocity); if (mCurrentViewIndex == CurrentTargetIndex.UPSTAIRS) { if (-mVelocityTracker.getYVelocity() > mMiniFlingVelocity) { return true; } } else { if (mVelocityTracker.getYVelocity() > mMiniFlingVelocity) { return true; } } return false; } private View getCurrentTargetView() { return mCurrentViewIndex == CurrentTargetIndex.UPSTAIRS ? mUpstairsView : mDownstairsView; } @Override public void computeScroll() { super.computeScroll(); if (mScroller.computeScrollOffset()) { scrollTo(0, mScroller.getCurrY()); postInvalidate(); } } /*** * 复用已经实现的View,省却了测量布局之类的麻烦 */ @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); measureChildren(widthMeasureSpec, heightMeasureSpec); setMeasuredDimension(getMeasuredWidth(), getMeasuredHeight()); } protected boolean canChildScrollVertically(int offSet,MotionEvent ev) { mCurrentTargetView = getCurrentTargetView(); return canScrollVertically(mCurrentTargetView, -offSet, ev); } /*** * judge is event is in current view * 判断MotionEvent是否处于View上面 */ protected boolean isTransformedTouchPointInView(MotionEvent ev, View view) { float x = ev.getRawX(); float y = ev.getRawY(); int[] rect = new int[2]; view.getLocationInWindow(rect); float localX = x - rect[0]; float localY = y - rect[1]; return localX >= 0 && localX < (view.getRight() - view.getLeft()) && localY >= 0 && localY < (view.getBottom() - view.getTop()); } /*** * first can view self ScrollVertically * seconde if View is ViewPager only judge current page * third if view is viewgroup check it`s children */ private boolean canScrollVertically(View view, int offSet, MotionEvent ev) { if (!mChildHasScrolled && !isTransformedTouchPointInView(ev, view)) { return false; } if (ViewCompat.canScrollVertically(view, offSet)) { mChildHasScrolled = true; return true; } if (view instanceof ViewPager) { return canViewPagerScrollVertically((ViewPager) view, offSet, ev); } if (view instanceof ViewGroup) { ViewGroup vGroup = (ViewGroup) view; for (int i = 0; i < vGroup.getChildCount(); i++) { if (canScrollVertically(vGroup.getChildAt(i), offSet, ev)) { mChildHasScrolled = true; return true; } } } return false; } private boolean canViewPagerScrollVertically(ViewPager viewPager, int offset,MotionEvent ev) { View showView = ((SlideFragmentPagerAdapter) viewPager.getAdapter()).getPrimaryItem(); return showView != null && canScrollVertically(showView, offset, ev); } @Override protected void onScrollChanged(int l, int t, int oldl, int oldt) { super.onScrollChanged(l, t, oldl, oldt); } }
<declare-styleable name="DragScrollDetailsLayout"> <!-- float value for indicate the moment of switch panel--> <attr name="percent" format="float"/> <!-- how long the animation keep--> <attr name="duration" format="integer"/> <!-- default panel to show after init--> <attr name="default_panel" format="enum"> <enum name="front" value="0"/> <enum name="behind" value="1"/> </attr> </declare-styleable>
http://www.open-open.com/lib/view/open1482476959653.html
自定义商品详情页
http://blog.csdn.net/qq_22271479/article/details/68490868
发表评论
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NestedScrollView滚动到顶部固定子View悬停挂靠粘在顶端
2018-10-31 20:45 6820网上有一个StickyScrollView,称之为粘性Scro ... -
自定义Behavior实现AppBarLayout越界弹性效果
2017-03-31 09:33 10253一、继承AppBarLayout.Beha ... -
Android - 一种相似图片搜索算法的实现
2017-03-31 09:33 2575算法 缩小尺寸。 将图片缩小到8x8的尺寸,总共64个 ... -
使用SpringAnimation实现带下拉弹簧动画的 ScrollView
2017-03-30 11:30 2799在刚推出的 Support Library 25.3.0 里面 ... -
Android为应用添加角标(Badge)
2017-03-30 11:21 61121.需求简介 角标是什么意思呢? 看下图即可明了: 可 ... -
Android端与笔记本利用局域网进行FTP通信
2017-03-23 10:17 934先看图 打开前: 打开后: Activity类 ... -
PorterDuffColorFilter 在项目中的基本使用
2017-03-03 10:58 1305有时候标题栏会浮在内容之上,而内容会有颜色的变化,这时候就要求 ... -
ColorAnimationView 实现了滑动Viewpager 时背景色动态变化的过渡效果
2017-02-24 09:41 2178用法在注释中: import android.anima ... -
迷你轻量级全方向完美滑动处理侧滑控件SlideLayout
2017-01-16 16:53 2554纯手工超级迷你轻量级全方向完美滑动处理侧滑控件(比官方 sup ... -
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2017-01-05 09:57 0https://github.com/JetradarMobi ... -
动态主题库Colorful,容易地改变App的配色方案
2016-12-27 14:49 2529Colorful是一个动态主题库,允许您很容易地改变App的配 ... -
对视图的对角线切割DiagonalView
2016-12-27 14:23 1078提供对视图的对角线切割,具有很好的用户定制 基本用法 ... -
让任意view具有滑动效果的SlideUp
2016-12-26 09:26 1669基本的类,只有一个: import android.a ... -
AdvancedWebView
2016-12-21 09:44 16https://github.com/delight-im/A ... -
可设置圆角背景边框的按钮, 通过调节色彩明度自动计算按下(pressed)状态颜色
2016-11-02 22:13 1868可设置圆角背景边框的的按钮, 通过调节色彩明度自动计算按下(p ... -
网络请求库相关
2016-10-09 09:35 62https://github.com/amitshekhari ... -
ASimpleCache一个简单的缓存框架
2015-10-26 22:53 2128ASimpleCache 是一个为android制定的 轻量级 ... -
使用ViewDragHelper实现的DragLayout开门效果
2015-10-23 10:55 3350先看一下图,有个直观的了解,向下拖动handle就“开门了”: ... -
保证图片长宽比的同时拉伸图片ImageView
2015-10-16 15:40 3683按比例放大图片,不拉伸失真 import android. ... -
向上拖动时,可以惯性滑动显示到下一页的控件DragLayout
2015-10-16 14:53 5534仿照淘宝和聚美优品,在商品详情页,向上拖动时,可以加载下一页。 ...
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