Android给ListView添加侧滑菜单功能

恢弘志士之气，不宜妄自菲薄。这篇文章主要讲述Android给ListView添加侧滑菜单功能相关的知识，希望能为你提供帮助。

【Android给ListView添加侧滑菜单功能】贼简单，但是上次集成完之后忘记整理，所以写的有点简单

文章图片

SwipeMenu类
继承自ViewGroup

package com.onepilltest.others; import android.content.Context; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.widget.Scroller; //抽屉ListView public class SwipeMenu extends ViewGroup { private int downX, moveX, moved; private Scroller scroller = new Scroller(getContext()); private boolean haveShowRight = false; public static SwipeMenu swipeMenu; public SwipeMenu(Context context) { super(context); }public SwipeMenu(Context context, AttributeSet attrs) { super(context, attrs); }public SwipeMenu(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); }@Override protected void onDetachedFromWindow() { super.onDetachedFromWindow(); if (swipeMenu != null& & swipeMenu==this) { swipeMenu.closeMenus(); swipeMenu = null; } }//缓慢滚动到指定位置 private void smoothScrollTo(int destX, int destY) { int scrollX = getScrollX(); int delta = destX - scrollX; //1000ms内滑动destX，效果就是慢慢滑动 scroller.startScroll(scrollX, 0, delta, 0, 100); invalidate(); }public void closeMenus() { smoothScrollTo(0, 0); haveShowRight = false; }public static void closeMenu() { swipeMenu.closeMenus(); }@Override public void computeScroll() { if (scroller.computeScrollOffset()) { scrollTo(scroller.getCurrX(), scroller.getCurrY()); postInvalidate(); } }@Override public boolean onTouchEvent(MotionEvent ev) { if (!scroller.isFinished()) { return false; } switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: downX = (int) ev.getRawX(); break; case MotionEvent.ACTION_MOVE: if (swipeMenu != null & & swipeMenu == this & & haveShowRight) { closeMenu(); return true; } moveX = (int) ev.getRawX(); moved = moveX - downX; if (haveShowRight) { moved -= getChildAt(1).getMeasuredWidth(); } scrollTo(-moved, 0); if (getScrollX() < = 0) { scrollTo(0, 0); } else if (getScrollX() > = getChildAt(1).getMeasuredWidth()) { scrollTo(getChildAt(1).getMeasuredWidth(), 0); } break; case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: if (swipeMenu != null) { closeMenu(); } //设置最小触发滑动的距离 if (getScrollX() > = 30) { haveShowRight = true; swipeMenu = this; smoothScrollTo(getChildAt(1).getMeasuredWidth(), 0); } else { haveShowRight = false; smoothScrollTo(0, 0); }break; } return true; }@Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); }@Override public LayoutParams generateLayoutParams(AttributeSet attrs) { return new MarginLayoutParams(getContext(), attrs); }@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); measureChildren(widthMeasureSpec, heightMeasureSpec); int width = MeasureSpec.getSize(widthMeasureSpec); View child = getChildAt(0); int margin = ((MarginLayoutParams) child.getLayoutParams()).topMargin + ((MarginLayoutParams) child.getLayoutParams()).bottomMargin; setMeasuredDimension(width, getChildAt(0).getMeasuredHeight() + margin); }@Override protected void onLayout(boolean changed, int l, int t, int r, int b) { int cCount = getChildCount(); for (int i = 0; i < cCount; i++) { View child = getChildAt(i); if (i == 0) { child.layout(l, t, r, b); } else if (i == 1) { child.layout(r, t, r + child.getMeasuredWidth(), b); } } }}

修改item布局文件

< com.onepilltest.others.SwipeMenu android:layout_width="match_parent" android:layout_height="match_parent"> 第一个View ... 第二个View(这个View表示侧滑后出现的视图) ... < /com.onepilltest.others.SwipeMenu>