Android自定义组合控件之自定义下拉刷新和左滑删除实例代码

绪论

最近项目里面用到了下拉刷新和左滑删除，网上找了找并没有可以用的，有比较好的左滑删除，但是并没有和下拉刷新上拉加载结合到一起，要不就是一些比较水的结合，并不能在项目里面使用，小编一着急自己组合了一个，做完了和QQ的对比了一下，并没有太大区别，今天分享给大家，其实并不难，但是不知道为什么网上没有比较好的Demo，当你的项目真的很急的时候，又没有比较好的Demo，那么“那条友谊的小船儿真是说翻就翻啊”,好了，下面先来具体看一下实现后的效果吧：

代码已经上传到Github上了，小伙伴们记得star和follow哦

https://github.com/Hankkin/SwipeRefreshDemo

还不错吧？比QQ多了个上拉加载，好了看看怎么实现的吧，小编在之前的游客评论中了解到，代码注释很重要，所以尽量把注释写的很清楚：

实现思路

由于时间有限，左滑菜单是在网上找的Demo

自定义下拉刷新头、尾

手势判断，根据滑动距离显示头部下拉布局

判断是否滑动到底部显示尾部上拉布局

创建左滑菜单，根据手势滑动事件弹出菜单

详细的看一下实现过程

1.首先我们先自定义下拉头布局：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="bottom" ><RelativeLayoutandroid:id="@+id/xlistview_header_content"android:layout_width="fill_parent"android:background="#00000000"android:layout_height="60dp" ><LinearLayoutandroid:id="@+id/xlistview_header_text"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true"android:gravity="center"android:orientation="vertical" ><TextViewandroid:id="@+id/xlistview_header_hint_textview"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textColor="#000"android:textSize="16sp"android:text="@string/xlistview_header_hint_normal" /><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="3dp" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:textColor="#000"android:text="@string/xlistview_header_last_time"android:textSize="14sp" /><TextViewandroid:id="@+id/xlistview_header_time"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textColor="#000"android:textSize="14sp" /></LinearLayout></LinearLayout><ImageViewandroid:id="@+id/xlistview_header_arrow"android:layout_width="wrap_content"android:layout_height="35dp"android:layout_alignLeft="@id/xlistview_header_text"android:layout_centerVertical="true"android:layout_marginLeft="-50dp"android:src="@drawable/xlistview_arrow" /><ProgressBarandroid:id="@+id/xlistview_header_progressbar"android:layout_width="25dp"android:layout_height="25dp"android:layout_alignLeft="@id/xlistview_header_text"android:layout_centerVertical="true"android:layout_marginLeft="-55dp"android:visibility="gone"/></RelativeLayout></LinearLayout>

2.接下来我们自定义HeaderView，代码很详细了，不多介绍了

package com.hankkin.library;import android.content.Context;import android.util.AttributeSet;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.view.animation.Animation;import android.view.animation.RotateAnimation;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.ProgressBar;import android.widget.TextView;public class RefreshListHeader extends LinearLayout {//根布局private LinearLayout mContainer;//下拉箭头图片private ImageView mArrowImageView;//下拉进度条private ProgressBar mProgressBar;//下拉文本private TextView mHintTextView;//状态值 0-正常 1-准备刷新 2-正在刷新private int mState = STATE_NORMAL;//抬起动画private Animation mRotateUpAnim;//下拉动画private Animation mRotateDownAnim;//下拉动画时间private final int ROTATE_ANIM_DURATION = 180;public final static int STATE_NORMAL = 0;public final static int STATE_READY = 1;public final static int STATE_REFRESHING = 2;public RefreshListHeader(Context context) {super(context);initView(context);}/*** @param context* @param attrs*/public RefreshListHeader(Context context, AttributeSet attrs) {super(context, attrs);initView(context);}/*** 初始化组件* @param context*/private void initView(Context context) {LayoutParams lp = new LayoutParams(LayoutParams.FILL_PARENT, 0);mContainer = (LinearLayout) LayoutInflater.from(context).inflate(R.layout.xlistview_header, null);addView(mContainer, lp);setGravity(Gravity.BOTTOM);mArrowImageView = (ImageView) findViewById(R.id.xlistview_header_arrow);mHintTextView = (TextView) findViewById(R.id.xlistview_header_hint_textview);mProgressBar = (ProgressBar) findViewById(R.id.xlistview_header_progressbar);//设置抬起动画mRotateUpAnim = new RotateAnimation(0.0f, -180.0f, Animation.RELATIVE_TO_SELF, 0.5f,Animation.RELATIVE_TO_SELF, 0.5f);mRotateUpAnim.setDuration(ROTATE_ANIM_DURATION);mRotateUpAnim.setFillAfter(true);//设置下拉动画mRotateDownAnim = new RotateAnimation(-180.0f, 0.0f, Animation.RELATIVE_TO_SELF, 0.5f,Animation.RELATIVE_TO_SELF, 0.5f);mRotateDownAnim.setDuration(ROTATE_ANIM_DURATION);mRotateDownAnim.setFillAfter(true);}//设置状态public void setState(int state) {if (state == mState)return;//正在刷新时-显示进度条，隐藏下拉箭头if (state == STATE_REFRESHING) {mArrowImageView.clearAnimation();mArrowImageView.setVisibility(View.INVISIBLE);mProgressBar.setVisibility(View.VISIBLE);} else {//显示下拉箭头，隐藏进度条mArrowImageView.setVisibility(View.VISIBLE);mProgressBar.setVisibility(View.INVISIBLE);}switch (state) {case STATE_NORMAL:if (mState == STATE_READY) {//准备刷新时开启动画mArrowImageView.startAnimation(mRotateDownAnim);}if (mState == STATE_REFRESHING) {//正在刷新时开启动画mArrowImageView.clearAnimation();}mHintTextView.setText(R.string.xlistview_header_hint_normal);break;case STATE_READY:if (mState != STATE_READY) {mArrowImageView.clearAnimation();mArrowImageView.startAnimation(mRotateUpAnim);mHintTextView.setText(R.string.xlistview_header_hint_ready);}break;case STATE_REFRESHING:mHintTextView.setText(R.string.xlistview_header_hint_loading);break;default:}mState = state;}/*** 设置头部高度* @param height*/public void setVisiableHeight(int height) {if (height < 0)height = 0;LayoutParams lp = (LayoutParams) mContainer.getLayoutParams();lp.height = height;mContainer.setLayoutParams(lp);}public int getVisiableHeight() {return mContainer.getHeight();}3.HeaderView定义结束后，我们需要自定义一个既支持下拉刷新又支持左滑删除的ListView，看看我是怎么做的：（左滑菜单是引用网上的Demo，代码写的也比较易懂，这里不详细给大家介绍了） 然后我们在他的基础上添加下拉上拉事件：（重点看一下onTouchEvent事件）@Overridepublic boolean onTouchEvent(MotionEvent ev) {if (mLastY == -1) { //获取上次y轴坐标mLastY = ev.getRawY();}switch (ev.getAction()) {case MotionEvent.ACTION_DOWN: //手势按下事件、获取坐标、设置上次下拉时间firstTouchY = ev.getRawY();mLastY = ev.getRawY();setRefreshTime(RefreshTime.getRefreshTime(getContext()));int oldPos = mTouchPosition;mDownX = ev.getX();mDownY = ev.getY();mTouchState = TOUCH_STATE_NONE;mTouchPosition = pointToPosition((int) ev.getX(), (int) ev.getY());//弹出左滑菜单if (mTouchPosition == oldPos && mTouchView != null && mTouchView.isOpen()) {mTouchState = TOUCH_STATE_X;mTouchView.onSwipe(ev);//左滑菜单手势监听事件，根据滑动距离弹出菜单return true;}//获取item view，此方法是因为getChildAt()传入index值导致listview不可见的item会报空指针// 防止listview不可见的item获取到的为空，使用下面方法View view = getChildAt(mTouchPosition - getFirstVisiblePosition());if (mTouchView != null && mTouchView.isOpen()) {//如果滑动的item不为空并且已经开启，则关闭该菜单mTouchView.smoothCloseMenu();mTouchView = null;return super.onTouchEvent(ev);}if (mTouchView != null) {//否则打开左滑菜单mTouchView.onSwipe(ev);}if (view instanceof SwipeMenuLayout) {mTouchView = (SwipeMenuLayout) view;}break;case MotionEvent.ACTION_MOVE://手势滑动事件final float deltaY = ev.getRawY() - mLastY;float dy = Math.abs((ev.getY() - mDownY));float dx = Math.abs((ev.getX() - mDownX));mLastY = ev.getRawY();//判断左滑菜单是否未激活、或者x轴偏移平方小于y轴偏移平方3倍的时候if ((mTouchView == null || !mTouchView.isActive()) && Math.pow(dx, 2) / Math.pow(dy, 2) <= 3) {//判断第一个可见位置并且头部布局可见高度大于0时或者y轴偏移量>0if (getFirstVisiblePosition() == 0 && (mHeaderView.getVisiableHeight() > 0 || deltaY > 0)) {// 重新更新头部高度updateHeaderHeight(deltaY / OFFSET_RADIO);invokeOnScrolling();}}if (mTouchState == TOUCH_STATE_X) {//如果x轴偏移弹出左滑菜单if (mTouchView != null) {mTouchView.onSwipe(ev);}getSelector().setState(new int[] { 0 });ev.setAction(MotionEvent.ACTION_CANCEL);super.onTouchEvent(ev);return true;} else if (mTouchState == TOUCH_STATE_NONE) {if (Math.abs(dy) > MAX_Y) { //如果y轴偏移量>指定y轴偏移量，设置y轴偏移状态mTouchState = TOUCH_STATE_Y;} else if (dx > MAX_X) {//如果x轴偏移量>指定x轴偏移量，设置x轴偏移状态，开始弹出左滑菜单mTouchState = TOUCH_STATE_X;if (mOnSwipeListener != null) {mOnSwipeListener.onSwipeStart(mTouchPosition);}}}break;case MotionEvent.ACTION_UP://手势抬起事件mLastY = -1; // resetif (getFirstVisiblePosition() == 0) {// 设置下拉刷新状态值，开启下拉刷新状态if (mEnablePullRefresh && mHeaderView.getVisiableHeight() > mHeaderViewHeight) {mPullRefreshing = true;mHeaderView.setState(RefreshListHeader.STATE_REFRESHING);if (onRefreshListener != null) {tag=REFRESH;onRefreshListener.onRefresh();}}resetHeaderHeight();}lastTouchY = ev.getRawY();//获取上次y轴偏移量if (canLoadMore()) {//判断是否满足上拉loadData();}if (mTouchState == TOUCH_STATE_X) {//如果为x轴偏移状态，开启左滑if (mTouchView != null) {mTouchView.onSwipe(ev);if (!mTouchView.isOpen()) {mTouchPosition = -1;mTouchView = null;}}if (mOnSwipeListener != null) {mOnSwipeListener.onSwipeEnd(mTouchPosition);}ev.setAction(MotionEvent.ACTION_CANCEL);super.onTouchEvent(ev);return true;}break;}return super.onTouchEvent(ev);}

当然这部分也是滑动冲突解决的主要部分，看一下完整的代码，应该能够看的懂了，小编几乎每一句都加上了注释，如果有看不明白的地方可以留言，小编会及时回复的：

package com.hankkin.library;import android.content.Context;import android.os.AsyncTask;import android.util.AttributeSet;import android.util.TypedValue;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewTreeObserver.OnGlobalLayoutListener;import android.view.animation.DecelerateInterpolator;import android.view.animation.Interpolator;import android.widget.AbsListView;import android.widget.AbsListView.OnScrollListener;import android.widget.LinearLayout;import android.widget.ListAdapter;import android.widget.ListView;import android.widget.RelativeLayout;import android.widget.Scroller;import android.widget.TextView;import java.util.Date;public class RefreshSwipeMenuListView extends ListView implements OnScrollListener {private static final int TOUCH_STATE_NONE = 0;private static final int TOUCH_STATE_X = 1; //x轴触摸状态值private static final int TOUCH_STATE_Y = 2; //y轴触摸状态值public static final int BOTH=2;//上拉和下拉public static final int HEADER=0;//下拉public static final int FOOTER=1;//上拉public static String tag;//ListView的动作public static final String REFRESH="refresh";public static final String LOAD="load";private int MAX_Y = 5; //Y轴最大偏移量private int MAX_X = 3; //X轴最大偏移量private float mDownX; //触摸xprivate float mDownY; //触摸yprivate int mTouchState; //触摸状态private int mTouchPosition; //触摸位置private SwipeMenuLayout mTouchView; //滑动弹出布局private OnSwipeListener mOnSwipeListener; //弹出监听器private float firstTouchY; //第一次触摸y坐标private float lastTouchY; //最后一次触摸y坐标//创建左滑菜单接口private SwipeMenuCreator mMenuCreator;//菜单点击事件private OnMenuItemClickListener mOnMenuItemClickListener;//关闭菜单动画修饰Interpolatorprivate Interpolator mCloseInterpolator;//开启菜单动画修饰Interpolatorprivate Interpolator mOpenInterpolator;private float mLastY = -1;private Scroller mScroller;private OnScrollListener mScrollListener; // 滑动监听// 下拉上拉监听器private OnRefreshListener onRefreshListener;//下拉头private RefreshListHeader mHeaderView;//头部视图内容，用来计算头部高度，不下拉时隐藏private RelativeLayout mHeaderViewContent;//下拉时间文本控件private TextView mHeaderTimeView;private int mHeaderViewHeight; // 头部高度private boolean mEnablePullRefresh = true;//能否下拉刷新private boolean mPullRefreshing = false; // 是否正在刷新//上拉尾部视图private LinearLayout mFooterView;private boolean mEnablePullLoad;//是否可以上拉加载private boolean mPullLoading; //是否正在上拉private boolean mIsFooterReady = false;private int mTotalItemCount;private int mScrollBack;private final static int SCROLLBACK_HEADER = 0;private final static int SCROLLBACK_FOOTER = 1;private final static int SCROLL_DURATION = 400;private final static int PULL_LOAD_MORE_DELTA = 50;private final static float OFFSET_RADIO = 1.8f;private boolean isFooterVisible=false;public RefreshSwipeMenuListView(Context context) {super(context);init(context);}public RefreshSwipeMenuListView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);init(context);}public RefreshSwipeMenuListView(Context context, AttributeSet attrs) {super(context, attrs);init(context);}/*** 初始化组件* @param context*/private void init(Context context) {mScroller = new Scroller(context, new DecelerateInterpolator());super.setOnScrollListener(this);// 初始化头部视图mHeaderView = new RefreshListHeader(context);mHeaderViewContent = (RelativeLayout) mHeaderView.findViewById(R.id.xlistview_header_content);mHeaderTimeView = (TextView) mHeaderView.findViewById(R.id.xlistview_header_time);addHeaderView(mHeaderView);// 初始化尾部视图mFooterView = (LinearLayout) LayoutInflater.from(context).inflate(R.layout.xlistview_footer, null, false);// 初始化头部高度mHeaderView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {@Overridepublic void onGlobalLayout() {mHeaderViewHeight = mHeaderViewContent.getHeight();//向 ViewTreeObserver 注册方法，以获取控件尺寸getViewTreeObserver().removeGlobalOnLayoutListener(this);}});MAX_X = dp2px(MAX_X);MAX_Y = dp2px(MAX_Y);mTouchState = TOUCH_STATE_NONE;}/*** 添加适配器* @param adapter*/@Overridepublic void setAdapter(ListAdapter adapter) {if (mIsFooterReady == false) { //添加尾部隐藏mIsFooterReady = true;addFooterView(mFooterView);mFooterView.setVisibility(GONE);}super.setAdapter(new SwipeMenuAdapter(getContext(), adapter) {@Overridepublic void createMenu(SwipeMenu menu) {//创建左滑菜单if (mMenuCreator != null) {mMenuCreator.create(menu);}}@Overridepublic void onItemClick(SwipeMenuView view, SwipeMenu menu, int index) {if (mOnMenuItemClickListener != null) {//左滑菜单点击事件mOnMenuItemClickListener.onMenuItemClick(view.getPosition(), menu, index);}if (mTouchView != null) {mTouchView.smoothCloseMenu();}}});}public void setCloseInterpolator(Interpolator interpolator) {mCloseInterpolator = interpolator;}public void setOpenInterpolator(Interpolator interpolator) {mOpenInterpolator = interpolator;}public Interpolator getOpenInterpolator() {return mOpenInterpolator;}public Interpolator getCloseInterpolator() {return mCloseInterpolator;}@Overridepublic boolean onInterceptTouchEvent(MotionEvent ev) {return super.onInterceptTouchEvent(ev);}@Overridepublic boolean onTouchEvent(MotionEvent ev) {if (mLastY == -1) { //获取上次y轴坐标mLastY = ev.getRawY();}switch (ev.getAction()) {case MotionEvent.ACTION_DOWN: //手势按下事件、获取坐标、设置上次下拉时间firstTouchY = ev.getRawY();mLastY = ev.getRawY();setRefreshTime(RefreshTime.getRefreshTime(getContext()));int oldPos = mTouchPosition;mDownX = ev.getX();mDownY = ev.getY();mTouchState = TOUCH_STATE_NONE;mTouchPosition = pointToPosition((int) ev.getX(), (int) ev.getY());//弹出左滑菜单if (mTouchPosition == oldPos && mTouchView != null && mTouchView.isOpen()) {mTouchState = TOUCH_STATE_X;mTouchView.onSwipe(ev);//左滑菜单手势监听事件，根据滑动距离弹出菜单return true;}//获取item view，此方法是因为getChildAt()传入index值导致listview不可见的item会报空指针// 防止listview不可见的item获取到的为空，使用下面方法View view = getChildAt(mTouchPosition - getFirstVisiblePosition());if (mTouchView != null && mTouchView.isOpen()) {//如果滑动的item不为空并且已经开启，则关闭该菜单mTouchView.smoothCloseMenu();mTouchView = null;return super.onTouchEvent(ev);}if (mTouchView != null) {//否则打开左滑菜单mTouchView.onSwipe(ev);}if (view instanceof SwipeMenuLayout) {mTouchView = (SwipeMenuLayout) view;}break;case MotionEvent.ACTION_MOVE://手势滑动事件final float deltaY = ev.getRawY() - mLastY;float dy = Math.abs((ev.getY() - mDownY));float dx = Math.abs((ev.getX() - mDownX));mLastY = ev.getRawY();//判断左滑菜单是否未激活、或者x轴偏移平方小于y轴偏移平方3倍的时候if ((mTouchView == null || !mTouchView.isActive()) && Math.pow(dx, 2) / Math.pow(dy, 2) <= 3) {//判断第一个可见位置并且头部布局可见高度大于0时或者y轴偏移量>0if (getFirstVisiblePosition() == 0 && (mHeaderView.getVisiableHeight() > 0 || deltaY > 0)) {// 重新更新头部高度updateHeaderHeight(deltaY / OFFSET_RADIO);invokeOnScrolling();}}if (mTouchState == TOUCH_STATE_X) {//如果x轴偏移弹出左滑菜单if (mTouchView != null) {mTouchView.onSwipe(ev);}getSelector().setState(new int[] { 0 });ev.setAction(MotionEvent.ACTION_CANCEL);super.onTouchEvent(ev);return true;} else if (mTouchState == TOUCH_STATE_NONE) {if (Math.abs(dy) > MAX_Y) { //如果y轴偏移量>指定y轴偏移量，设置y轴偏移状态mTouchState = TOUCH_STATE_Y;} else if (dx > MAX_X) {//如果x轴偏移量>指定x轴偏移量，设置x轴偏移状态，开始弹出左滑菜单mTouchState = TOUCH_STATE_X;if (mOnSwipeListener != null) {mOnSwipeListener.onSwipeStart(mTouchPosition);}}}break;case MotionEvent.ACTION_UP://手势抬起事件mLastY = -1; // resetif (getFirstVisiblePosition() == 0) {// 设置下拉刷新状态值，开启下拉刷新状态if (mEnablePullRefresh && mHeaderView.getVisiableHeight() > mHeaderViewHeight) {mPullRefreshing = true;mHeaderView.setState(RefreshListHeader.STATE_REFRESHING);if (onRefreshListener != null) {tag=REFRESH;onRefreshListener.onRefresh();}}resetHeaderHeight();}lastTouchY = ev.getRawY();//获取上次y轴偏移量if (canLoadMore()) {//判断是否满足上拉loadData();}if (mTouchState == TOUCH_STATE_X) {//如果为x轴偏移状态，开启左滑if (mTouchView != null) {mTouchView.onSwipe(ev);if (!mTouchView.isOpen()) {mTouchPosition = -1;mTouchView = null;}}if (mOnSwipeListener != null) {mOnSwipeListener.onSwipeEnd(mTouchPosition);}ev.setAction(MotionEvent.ACTION_CANCEL);super.onTouchEvent(ev);return true;}break;}return super.onTouchEvent(ev);}class ResetHeaderHeightTask extends AsyncTask<Void, Void, Void> {protected Void doInBackground(Void... params) {try {Thread.sleep(400);} catch (InterruptedException e) {e.printStackTrace();}return null;}protected void onPostExecute(Void result) {mPullRefreshing = false;mHeaderView.setState(RefreshListHeader.STATE_NORMAL);resetHeaderHeight();}}public void smoothOpenMenu(int position) {if (position >= getFirstVisiblePosition() && position <= getLastVisiblePosition()) {View view = getChildAt(position - getFirstVisiblePosition());if (view instanceof SwipeMenuLayout) {mTouchPosition = position;if (mTouchView != null && mTouchView.isOpen()) {mTouchView.smoothCloseMenu();}mTouchView = (SwipeMenuLayout) view;mTouchView.smoothOpenMenu();}}}private int dp2px(int dp) {return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,getContext().getResources().getDisplayMetrics());}public void setMenuCreator(SwipeMenuCreator menuCreator) {this.mMenuCreator = menuCreator;}public void setOnMenuItemClickListener(OnMenuItemClickListener onMenuItemClickListener) {this.mOnMenuItemClickListener = onMenuItemClickListener;}public void setOnSwipeListener(OnSwipeListener onSwipeListener) {this.mOnSwipeListener = onSwipeListener;}public static interface OnMenuItemClickListener {void onMenuItemClick(int position, SwipeMenu menu, int index);}public static interface OnSwipeListener {void onSwipeStart(int position);void onSwipeEnd(int position);}/*** 设置刷新可用* @param enable*/private void setPullRefreshEnable(boolean enable) {mEnablePullRefresh = enable;if (!mEnablePullRefresh) { // disable, hide the contentmHeaderViewContent.setVisibility(View.INVISIBLE);} else {mHeaderViewContent.setVisibility(View.VISIBLE);}}/*** enable or disable pull up load more feature.* 设置加载可用* @param enable*/private void setPullLoadEnable(boolean enable) {mEnablePullLoad = enable;if (!mEnablePullLoad) {mFooterView.setVisibility(GONE);mFooterView.setOnClickListener(null);} else {mPullLoading = false;mFooterView.setVisibility(VISIBLE);// both "pull up" and "click" will invoke load more.mFooterView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {startLoadMore();}});}}/*** stop refresh, reset header view.* 停止刷新,重置头部控件*/private void stopRefresh() {if (mPullRefreshing == true) {mPullRefreshing = false;resetHeaderHeight();}}/*** stop load more, reset footer view.* 停止加载更多,重置尾部控件*/private void stopLoadMore() {if (mPullLoading == true) {mPullLoading = false;mFooterView.setVisibility(GONE);}}/*** set last refresh time** @param time*/public void setRefreshTime(String time) {mHeaderTimeView.setText(time);}private void invokeOnScrolling() {if (mScrollListener instanceof OnXScrollListener) {OnXScrollListener l = (OnXScrollListener) mScrollListener;l.onXScrolling(this);}}/*** 更新头部高度，设置状态值* @param delta*/private void updateHeaderHeight(float delta) {mHeaderView.setVisiableHeight((int) delta + mHeaderView.getVisiableHeight());if (mEnablePullRefresh && !mPullRefreshing) {if (mHeaderView.getVisiableHeight() > mHeaderViewHeight) {mHeaderView.setState(RefreshListHeader.STATE_READY);} else {mHeaderView.setState(RefreshListHeader.STATE_NORMAL);}}setSelection(0); // scroll to top each time}/*** 重置头部视图高度*/private void resetHeaderHeight() {int height = mHeaderView.getVisiableHeight();if (height == 0) // 不可见return;// 如果正在刷新并且头部高度没有完全显示不做操作if (mPullRefreshing && height <= mHeaderViewHeight) {return;}int finalHeight = 0; // 默认//如果正在刷新并且滑动高度大于头部高度if (mPullRefreshing && height > mHeaderViewHeight) {finalHeight = mHeaderViewHeight;}mScrollBack = SCROLLBACK_HEADER;mScroller.startScroll(0, height, 0, finalHeight - height, SCROLL_DURATION);// 触发computescrollinvalidate();}/*** 开启上啦*/private void startLoadMore() {mPullLoading = true;mFooterView.setVisibility(VISIBLE);if (onRefreshListener != null) {tag=LOAD;onRefreshListener.onLoadMore();}}@Overridepublic void computeScroll() {if (mScroller.computeScrollOffset()) {if (mScrollBack == SCROLLBACK_HEADER) {mHeaderView.setVisiableHeight(mScroller.getCurrY());} postInvalidate();invokeOnScrolling();}super.computeScroll();}@Overridepublic void setOnScrollListener(OnScrollListener l) {mScrollListener = l;}@Overridepublic void onScrollStateChanged(AbsListView view, int scrollState) {if (mScrollListener != null) {mScrollListener.onScrollStateChanged(view, scrollState);}}/*** 滑动监听* @param view* @param firstVisibleItem* @param visibleItemCount* @param totalItemCount*/@Overridepublic void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {mTotalItemCount = totalItemCount;if (mScrollListener != null) {mScrollListener.onScroll(view, firstVisibleItem, visibleItemCount, totalItemCount);}if(firstVisibleItem+visibleItemCount>=totalItemCount){isFooterVisible=true;}else{isFooterVisible=false;}}public void setOnRefreshListener(OnRefreshListener l) {onRefreshListener = l;}/*** you can listen ListView.OnScrollListener or this one. it will invoke* onXScrolling when header/footer scroll back.*/public interface OnXScrollListener extends OnScrollListener {public void onXScrolling(View view);}/*** implements this interface to get refresh/load more event.*/public interface OnRefreshListener {public void onRefresh();public void onLoadMore();}/*** 上拉加载和下拉刷新请求完毕*/public void complete(){stopLoadMore();stopRefresh();if(REFRESH.equals(tag)){RefreshTime.setRefreshTime(getContext(),new Date());}}/*** 设置ListView的模式,上拉和下拉* @param mode*/public void setListViewMode(int mode){if(mode==BOTH){setPullRefreshEnable(true);setPullLoadEnable(true);}else if(mode==FOOTER){setPullLoadEnable(true);}else if(mode==HEADER){setPullRefreshEnable(true);}}/*** 判断是否可以上蜡加载* @return*/private boolean canLoadMore() {return isBottom() && !mPullLoading && isPullingUp();}/*** 判断是否到达底部* @return*/private boolean isBottom() {if (getCount() > 0) {if (getLastVisiblePosition() == getAdapter().getCount() - 1 &&getChildAt(getChildCount() - 1).getBottom() <= getHeight()) {return true;}}return false;}private boolean isPullingUp() {return (firstTouchY - lastTouchY) >= 200;}private void loadData() {if (onRefreshListener != null) {setLoading(true);}}/*** 设置是否上拉* @param loading*/public void setLoading(boolean loading) {if (this == null) return;mPullLoading = loading;if (loading) {mFooterView.setVisibility(VISIBLE);setSelection(getAdapter().getCount() - 1);onRefreshListener.onLoadMore();} else {mFooterView.setVisibility(GONE);firstTouchY = 0;lastTouchY = 0;}}

定义完了之后我们是这样用的：

rsmLv.setAdapter(adapter);rsmLv.setListViewMode(RefreshSwipeMenuListView.HEADER);rsmLv.setOnRefreshListener(this);SwipeMenuCreator creator = new SwipeMenuCreator() {@Overridepublic void create(SwipeMenu menu) {// 创建滑动选项SwipeMenuItem rejectItem = new SwipeMenuItem(getApplicationContext());// 设置选项背景rejectItem.setBackground(new ColorDrawable(getResources().getColor(R.color.top)));// 设置选项宽度rejectItem.setWidth(dp2px(80,getApplicationContext()));// 设置选项标题rejectItem.setTitle("置顶");// 设置选项标题rejectItem.setTitleSize(16);// 设置选项标题颜色rejectItem.setTitleColor(Color.WHITE);// 添加选项menu.addMenuItem(rejectItem);// 创建删除选项SwipeMenuItem argeeItem = new SwipeMenuItem(getApplicationContext());argeeItem.setBackground(new ColorDrawable(getResources().getColor(R.color.del)));argeeItem.setWidth(dp2px(80, getApplicationContext()));argeeItem.setTitle("删除");argeeItem.setTitleSize(16);argeeItem.setTitleColor(Color.WHITE);menu.addMenuItem(argeeItem);}};rsmLv.setMenuCreator(creator);rsmLv.setOnMenuItemClickListener(new RefreshSwipeMenuListView.OnMenuItemClickListener() {@Overridepublic void onMenuItemClick(int position, SwipeMenu menu, int index) {switch (index) {case 0: //第一个选项Toast.makeText(MainActivity.this,"您点击的是置顶",Toast.LENGTH_SHORT).show();break;case 1: //第二个选项del(position,rsmLv.getChildAt(position+1-rsmLv.getFirstVisiblePosition()));break;}}});

为了和QQ有着一样的体验效果，小编加了一个删除item的动画 看起来就不会太生硬了，用户体验也比较好：

/*** 删除item动画* @param index* @param v*/private void del(final int index, View v){final Animation animation = (Animation) AnimationUtils.loadAnimation(v.getContext(), R.anim.list_anim);animation.setAnimationListener(new Animation.AnimationListener() {public void onAnimationStart(Animation animation) {}public void onAnimationRepeat(Animation animation) {}public void onAnimationEnd(Animation animation) {data.remove(index);adapter.notifyDataSetChanged();animation.cancel();}});v.startAnimation(animation);}

好了到这里了，我们的组合控件-上拉下拉+左滑删除的组合ListView就定义好了，分享出来小伙伴们以后遇到可以直接拿来用，”到时候小船儿也不会再翻了”，不合理的地方希望大家提出来，共同交流，进步。

以上所述是小编给大家介绍的Android自定义组合控件之自定义下拉刷新和左滑删除实例代码，希望对大家有所帮助！

两粒种子，一片森林。