其實(shí)網(wǎng)上類(lèi)似的實(shí)現(xiàn)已經(jīng)很多了，原理也并不難，只是網(wǎng)上各種demo運(yùn)行下來(lái)，多少都有一些問(wèn)題。折騰了半天，決定自己實(shí)現(xiàn)一個(gè)。
首先我們看看實(shí)現(xiàn)效果：
對(duì)比網(wǎng)上各類(lèi)demo，這次要實(shí)現(xiàn)的主要表現(xiàn)在以下幾點(diǎn)：
1.側(cè)滑顯示抽屜view
2.側(cè)滑抽屜隱藏view控件點(diǎn)擊事件
3.單擊任意item隱藏顯示的抽屜view
4.滑動(dòng)list隱藏顯示的抽屜view
5.增加SwipeLayout點(diǎn)擊事件和Swipe touch事件判斷處理
6.優(yōu)化快速劃開(kāi)多個(gè)抽屜隱藏view時(shí)多個(gè)SwipeLayout滑動(dòng)狀態(tài)判斷處理，僅顯示最后一個(gè)滑動(dòng)的抽屜隱藏view，隱藏前面所有打開(kāi)的抽屜view（快速滑動(dòng)時(shí)，可能存在多個(gè)抽屜view打開(kāi)情況，網(wǎng)上找的幾個(gè)demo主要問(wèn)題都集中在這一塊）
實(shí)現(xiàn)原理
其實(shí)單就一個(gè)SwipeLayout的實(shí)現(xiàn)原理來(lái)講的話(huà)，還是很簡(jiǎn)單的，實(shí)際上單個(gè)SwipeLayout隱藏抽屜狀態(tài)時(shí)，應(yīng)該是這樣的：
也就是說(shuō)，最初的隱藏狀態(tài)，實(shí)際上是將hide view區(qū)域layout到conten view的右邊，達(dá)到隱藏效果，而后顯示則是根據(jù)拖拽的x值變化來(lái)動(dòng)態(tài)的layout 2個(gè)view，從而達(dá)到一個(gè)滑動(dòng)抽屜效果。
當(dāng)然，直接重寫(xiě)view的onTouchEvent來(lái)動(dòng)態(tài)的layout 2個(gè)view是可以實(shí)現(xiàn)我們需要的效果的，但是有更好的方法來(lái)實(shí)現(xiàn)，就是同過(guò)ViewDragHelper。
ViewDragHelper是google官方提供的一個(gè)專(zhuān)門(mén)用于手勢(shì)分析處理的類(lèi)，關(guān)于ViewDragHelper的基本使用，網(wǎng)上有一大堆的資源。具體的ViewDragHelper介紹以及基本使用方法，本文就不重復(fù)造輪子了，此處推薦鴻洋大神的一篇微博：Android ViewDragHelper完全解析 自定義ViewGroup神器。
具體實(shí)現(xiàn)
下面我們開(kāi)始具體的實(shí)現(xiàn)。
布局比較簡(jiǎn)單，這里就不貼代碼了，最后會(huì)貼上本demo的完整代碼地址。
首先我們實(shí)現(xiàn)一個(gè)繼承FrameLayout的自定義SwipeLauout，重寫(xiě)onFinishInflate方法：
這里我們只允許SwipeLayout設(shè)置2個(gè)子View，ContentLayout是繼承LinearLayout的自定義layout，后面會(huì)講到這個(gè)，此處先略過(guò)；
@Override protected void onFinishInflate() { super.onFinishInflate(); if (getChildCount() != 2) { throw new IllegalStateException("Must 2 views in SwipeLayout"); } contentView = getChildAt(0); hideView = getChildAt(1); if (contentView instanceof ContentLayout) ((ContentLayout) contentView).setSwipeLayout(this); else { throw new IllegalStateException("content view must be an instanceof FrontLayout"); } }接著重寫(xiě)onSizeChanged，onLayout，onInterceptTouchEvent方法：
@Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); hideViewHeight = hideView.getMeasuredHeight(); hideViewWidth = hideView.getMeasuredWidth(); contentWidth = contentView.getMeasuredWidth(); } @Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { // super.onLayout(changed, left, top, right, bottom); contentView.layout(0, 0, contentWidth, hideViewHeight); hideView.layout(contentView.getRight(), 0, contentView.getRight() + hideViewWidth, hideViewHeight); } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { boolean result = viewDragHelper.shouldInterceptTouchEvent(ev); // Log.e("SwipeLayout", "-----onInterceptTouchEvent-----"); return result; }然后是比較關(guān)鍵的，重寫(xiě)onTouchEvent方法以及ViewDragHelper.Callback回調(diào)，我們定了一個(gè)enum來(lái)判斷SwipeLayout的三種狀態(tài)。在onViewPositionChanged中，有2種方法實(shí)現(xiàn)content view和hide view的伴隨移動(dòng)，一種是直接offset view的橫向變化量，還有一種就是直接通過(guò)layout的方式，兩種方式都可以。
public enum SwipeState { Open, Swiping, Close; } @Override public boolean onTouchEvent(MotionEvent event) { // Log.e("SwipeLayout", "-----onTouchEvent-----"); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: downX = event.getX(); downY = event.getY(); break; case MotionEvent.ACTION_MOVE: // 1.獲取x和y方向移動(dòng)的距離 float moveX = event.getX(); float moveY = event.getY(); float delatX = moveX - downX;// x方向移動(dòng)的距離 float delatY = moveY - downY;// y方向移動(dòng)的距離 if (Math.abs(delatX) > Math.abs(delatY)) { // 表示移動(dòng)是偏向于水平方向，那么應(yīng)該SwipeLayout應(yīng)該處理，請(qǐng)求listview不要攔截 this.requestDisallowInterceptTouchEvent(true); } // 更新downX，downY downX = moveX; downY = moveY; break; case MotionEvent.ACTION_UP: break; } viewDragHelper.processTouchEvent(event); return true; } private ViewDragHelper.Callback callback = new ViewDragHelper.Callback() { @Override public boolean tryCaptureView(View child, int pointerId) { return child == contentView || child == hideView; } @Override public int getViewHorizontalDragRange(View child) { return hideViewWidth; } @Override public int clampViewPositionHorizontal(View child, int left, int dx) { if (child == contentView) { if (left > 0) left = 0; if (left < -hideViewWidth) left = -hideViewWidth; } else if (child == hideView) { if (left > contentWidth) left = contentWidth; if (left < (contentWidth - hideViewWidth)) left = contentWidth - hideViewWidth; } return left; } @Override public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) { super.onViewPositionChanged(changedView, left, top, dx, dy); if (changedView == contentView) { // 如果手指滑動(dòng)deleteView，那么也要講橫向變化量dx設(shè)置給contentView hideView.offsetLeftAndRight(dx); } else if (changedView == hideView) { // 如果手指滑動(dòng)contentView，那么也要講橫向變化量dx設(shè)置給deleteView contentView.offsetLeftAndRight(dx); } // if (changedView == contentView) { // // 手動(dòng)移動(dòng)deleteView // hideView.layout(hideView.getLeft() + dx, // hideView.getTop() + dy, hideView.getRight() + dx, // hideView.getBottom() + dy); // } else if (hideView == changedView) { // // 手動(dòng)移動(dòng)contentView // contentView.layout(contentView.getLeft() + dx, // contentView.getTop() + dy, contentView.getRight() + dx, // contentView.getBottom() + dy); // } //實(shí)時(shí)更新當(dāng)前狀態(tài) updateSwipeStates(); invalidate(); } @Override public void onViewReleased(View releasedChild, float xvel, float yvel) { super.onViewReleased(releasedChild, xvel, yvel); //根據(jù)用戶(hù)滑動(dòng)速度處理開(kāi)關(guān) //xvel: x方向滑動(dòng)速度 //yvel: y方向滑動(dòng)速度 // Log.e("tag", "currentState = " + currentState); // Log.e("tag", "xvel = " + xvel); if (xvel < -200 && currentState != SwipeState.Open) { open(); return; } else if (xvel > 200 && currentState != SwipeState.Close) { close(); return; } if (contentView.getLeft() < -hideViewWidth / 2) { // 打開(kāi) open(); } else { // 關(guān)閉 close(); } } };open()，close()實(shí)現(xiàn)
public void open() { open(true); } public void close() { close(true); } /** * 打開(kāi)的方法 * * @param isSmooth 是否通過(guò)緩沖動(dòng)畫(huà)的形式設(shè)定view的位置 */ public void open(boolean isSmooth) { if (isSmooth) { viewDragHelper.smoothSlideViewTo(contentView, -hideViewWidth, contentView.getTop()); ViewCompat.postInvalidateOnAnimation(SwipeLayout.this); } else { contentView.offsetLeftAndRight(-hideViewWidth);//直接偏移View的位置 hideView.offsetLeftAndRight(-hideViewWidth);//直接偏移View的位置 // contentView.layout(-hideViewWidth, 0, contentWidth - hideViewWidth, hideViewHeight);//直接通過(guò)坐標(biāo)擺放 // hideView.layout(contentView.getRight(), 0, hideViewWidth, hideViewHeight);//直接通過(guò)坐標(biāo)擺放 invalidate(); } } /** * 關(guān)閉的方法 * * @param isSmooth true：通過(guò)緩沖動(dòng)畫(huà)的形式設(shè)定view的位置 * false：直接設(shè)定view的位置 */ public void close(boolean isSmooth) { if (isSmooth) { viewDragHelper.smoothSlideViewTo(contentView, 0, contentView.getTop()); ViewCompat.postInvalidateOnAnimation(SwipeLayout.this); } else { contentView.offsetLeftAndRight(hideViewWidth); hideView.offsetLeftAndRight(hideViewWidth); invalidate(); //contentView.layout(0, 0, contentWidth, hideViewHeight);//直接通過(guò)坐標(biāo)擺放 //hideView.layout(contentView.getRight(), 0, hideViewWidth, hideViewHeight);//直接通過(guò)坐標(biāo)擺放 } }此上基本實(shí)現(xiàn)了單個(gè)SwipeLayout的抽屜滑動(dòng)效果，但是將此SwipeLayout作為一個(gè)item布局設(shè)置給一個(gè)listView的時(shí)候，還需要做許多的判斷。
由于listView的重用機(jī)制，我們這里并未針對(duì)listview做任何處理，所以一旦有一個(gè)item的SwipeLayout的狀態(tài)是打開(kāi)狀態(tài)，不可避免的其它也必然有幾個(gè)是打開(kāi)狀態(tài)，所以我們這里需要根據(jù)檢測(cè)listView的滑動(dòng)，當(dāng)listView滑動(dòng)時(shí)，關(guān)閉SwipeLayout。既然需要在外部控制SwipeLayout的開(kāi)關(guān)，我們先定義一個(gè)SwipeLayoutManager用于管理SwipeLayout的控制。
public class SwipeLayoutManager { //記錄打開(kāi)的SwipeLayout集合 private HashSet<SwipeLayout> mUnClosedSwipeLayouts = new HashSet<SwipeLayout>(); private SwipeLayoutManager() { } private static SwipeLayoutManager mInstance = new SwipeLayoutManager(); public static SwipeLayoutManager getInstance() { return mInstance; } /** * 將一個(gè)沒(méi)有關(guān)閉的SwipeLayout加入集合 * @param layout */ public void add(SwipeLayout layout) { mUnClosedSwipeLayouts.add(layout); } /** * 將一個(gè)沒(méi)有關(guān)閉的SwipeLayout移出集合 * @param layout */ public void remove(SwipeLayout layout){ mUnClosedSwipeLayouts.remove(layout); } /** * 關(guān)閉已經(jīng)打開(kāi)的SwipeLayout */ public void closeUnCloseSwipeLayout() { if(mUnClosedSwipeLayouts.size() == 0){ return; } for(SwipeLayout l : mUnClosedSwipeLayouts){ l.close(true); } mUnClosedSwipeLayouts.clear(); } /** * 關(guān)閉已經(jīng)打開(kāi)的SwipeLayout */ public void closeUnCloseSwipeLayout(boolean isSmooth) { if(mUnClosedSwipeLayouts.size() == 0){ return; } for(SwipeLayout l : mUnClosedSwipeLayouts){ l.close(isSmooth); } mUnClosedSwipeLayouts.clear(); }}這樣就可以監(jiān)聽(tīng)listView的滑動(dòng)，然后在listView滑動(dòng)的時(shí)候，關(guān)閉所有的抽屜View。
listView.setOnScrollListener(new OnScrollListener() { @Override public void onScrollStateChanged(AbsListView view, int scrollState) { swipeLayoutManager.closeUnCloseSwipeLayout(); } @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { } });考慮到大多數(shù)時(shí)候，在我們打開(kāi)抽屜View和關(guān)閉抽屜View的時(shí)候，外部需要知道SwipeLayout的狀態(tài)值，所以我們需要在SwipeLayout中增加幾個(gè)接口，告訴外部當(dāng)前SwipeLayout的狀態(tài)值：
SwipeLayout.java
---------------- private void updateSwipeStates() { SwipeState lastSwipeState = currentState; SwipeState swipeState = getCurrentState(); if (listener == null) { try { throw new Exception("please setOnSwipeStateChangeListener first!"); } catch (Exception e) { e.printStackTrace(); } return; } if (swipeState != currentState) { currentState = swipeState; if (currentState == SwipeState.Open) { listener.onOpen(this); // 當(dāng)前的Swipelayout已經(jīng)打開(kāi)，需要讓Manager記錄 swipeLayoutManager.add(this); } else if (currentState == SwipeState.Close) { listener.onClose(this); // 說(shuō)明當(dāng)前的SwipeLayout已經(jīng)關(guān)閉，需要讓Manager移除 swipeLayoutManager.remove(this); } else if (currentState == SwipeState.Swiping) { if (lastSwipeState == SwipeState.Open) { listener.onStartClose(this); } else if (lastSwipeState == SwipeState.Close) { listener.onStartOpen(this); //hideView準(zhǔn)備顯示之前，先將之前打開(kāi)的的SwipeLayout全部關(guān)閉 swipeLayoutManager.closeUnCloseSwipeLayout(); swipeLayoutManager.add(this); } } } else { currentState = swipeState; } } /** * 獲取當(dāng)前控件狀態(tài) * * @return */ public SwipeState getCurrentState() { int left = contentView.getLeft(); // Log.e("tag", "contentView.getLeft() = " + left); // Log.e("tag", "hideViewWidth = " + hideViewWidth); if (left == 0) { return SwipeState.Close; } if (left == -hideViewWidth) { return SwipeState.Open; } return SwipeState.Swiping; } private OnSwipeStateChangeListener listener; public void setOnSwipeStateChangeListener( OnSwipeStateChangeListener listener) { this.listener = listener; } public View getContentView() { return contentView; } public interface OnSwipeStateChangeListener { void onOpen(SwipeLayout swipeLayout); void onClose(SwipeLayout swipeLayout); void onStartOpen(SwipeLayout swipeLayout); void onStartClose(SwipeLayout swipeLayout); }然后接下來(lái)是寫(xiě)一個(gè)為listView設(shè)置的SwipeAdapter
SwipeAdapter.java
------------public class SwipeAdapter extends BaseAdapter implements OnSwipeStateChangeListener { private Context mContext; private List<String> list; private MyClickListener myClickListener; private SwipeLayoutManager swipeLayoutManager; public SwipeAdapter(Context mContext) { super(); this.mContext = mContext; init(); } private void init() { myClickListener = new MyClickListener(); swipeLayoutManager = SwipeLayoutManager.getInstance(); } public void setList(List<String> list){ this.list = list; notifyDataSetChanged(); } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return list.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(final int position, View convertView, ViewGroup parent) { if (convertView == null) { convertView = UIUtils.inflate(R.layout.list_item_swipe); } ViewHolder holder = ViewHolder.getHolder(convertView); holder.tv_content.setText(list.get(position)); holder.tv_overhead.setOnClickListener(myClickListener); holder.tv_overhead.setTag(position); holder.tv_delete.setOnClickListener(myClickListener); holder.tv_delete.setTag(position); holder.sv_layout.setOnSwipeStateChangeListener(this); holder.sv_layout.setTag(position); holder.sv_layout.getContentView().setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { ToastUtils.showToast("item click : " + position); swipeLayoutManager.closeUnCloseSwipeLayout(); } }); return convertView; } static class ViewHolder { TextView tv_content, tv_overhead, tv_delete; SwipeLayout sv_layout; public ViewHolder(View convertView) { tv_content = (TextView) convertView.findViewById(R.id.tv_content); tv_overhead = (TextView) convertView.findViewById(R.id.tv_overhead); tv_delete = (TextView) convertView.findViewById(R.id.tv_delete); sv_layout = (SwipeLayout) convertView.findViewById(R.id.sv_layout); } public static ViewHolder getHolder(View convertView) { ViewHolder holder = (ViewHolder) convertView.getTag(); if (holder == null) { holder = new ViewHolder(convertView); convertView.setTag(holder); } return holder; } } class MyClickListener implements View.OnClickListener { @Override public void onClick(View v) { Integer position = (Integer) v.getTag(); switch (v.getId()) { case R.id.tv_overhead: //ToastUtils.showToast("position : " + position + " overhead is clicked."); } break; case R.id.tv_delete: //ToastUtils.showToast("position : " + position + " delete is clicked."); } break; default: break; } } } @Override public void onOpen(SwipeLayout swipeLayout) { //ToastUtils.showToast(swipeLayout.getTag() + "onOpen."); } @Override public void onClose(SwipeLayout swipeLayout) { //ToastUtils.showToast(swipeLayout.getTag() + "onClose."); } @Override public void onStartOpen(SwipeLayout swipeLayout) { // ToastUtils.showToast("onStartOpen."); } @Override public void onStartClose(SwipeLayout swipeLayout) { // ToastUtils.showToast("onStartClose."); }} 此時(shí)已經(jīng)基本實(shí)現(xiàn)了我們需要的大部分功能了，但是當(dāng)我們滑動(dòng)的時(shí)候，又發(fā)現(xiàn)新的問(wèn)題，我們的SwipeLayout和listview滑動(dòng)判斷有問(wèn)題。由于前面我們僅僅是將touch攔截事件簡(jiǎn)簡(jiǎn)單單的丟給了viewDragHelper.shouldInterceptTouchEvent(ev)來(lái)處理，導(dǎo)致SwipeLayout和listview攔截touch事件時(shí)的處理存在一定的問(wèn)題，這里我們要提到一個(gè)知識(shí)點(diǎn)：Android view事件的傳遞。
（1）首先由Activity分發(fā)，分發(fā)給根View，也就是DecorView（DecorView為整個(gè)Window界面的最頂層View）
（2）然后由根View分發(fā)到子的View
view事件攔截如下圖所示：
view事件的消費(fèi)如下圖所示：
注：以上2張圖借鑒網(wǎng)上總結(jié)的比較經(jīng)典的圖
所以這里我們就要談到一開(kāi)始出現(xiàn)的ContentLayout，主要重寫(xiě)了onInterceptTouchEvent和onTouchEvent。
public class ContentLayout extends LinearLayout { SwipeLayoutInterface mISwipeLayout; public ContentLayout(Context context) { super(context); } public ContentLayout(Context context, AttributeSet attrs) { super(context, attrs); } public ContentLayout(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } public void setSwipeLayout(SwipeLayoutInterface iSwipeLayout) { this.mISwipeLayout = iSwipeLayout; } @Override public boolean onInterceptTouchEvent(MotionEvent ev) {// Log.e("ContentLayout", "-----onInterceptTouchEvent-----"); if (mISwipeLayout.getCurrentState() == SwipeState.Close) { return super.onInterceptTouchEvent(ev); } else { return true; } } @Override public boolean onTouchEvent(MotionEvent ev) {// Log.e("ContentLayout", "-----onTouchEvent-----"); if (mISwipeLayout.getCurrentState() == SwipeState.Close) { return super.onTouchEvent(ev); } else { if (ev.getActionMasked() == MotionEvent.ACTION_UP) { mISwipeLayout.close(); } return true; } }}另外由于在ContentLayout中需要拿到父View SwipeLayout的開(kāi)關(guān)狀態(tài)以及控制SwipeLayout的關(guān)閉，因此在再寫(xiě)一個(gè)接口，用于ContentLayout獲取SwipeLayout的開(kāi)關(guān)狀態(tài)以及更新SwipeLayout。
public interface SwipeLayoutInterface { SwipeState getCurrentState(); void open(); void close();}然后接著的是完善SwipeLayout的onInterceptTouchEvent，我們?cè)谶@里增加一個(gè)GestureDetectorCompat處理手勢(shì)識(shí)別：
private void init(Context context) { viewDragHelper = ViewDragHelper.create(this, callback); mGestureDetector = new GestureDetectorCompat(context, mOnGestureListener); swipeLayoutManager = SwipeLayoutManager.getInstance(); } private SimpleOnGestureListener mOnGestureListener = new SimpleOnGestureListener() { @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { // 當(dāng)橫向移動(dòng)距離大于等于縱向時(shí)，返回true return Math.abs(distanceX) >= Math.abs(distanceY); } }; @Override public boolean onInterceptTouchEvent(MotionEvent ev) { boolean result = viewDragHelper.shouldInterceptTouchEvent(ev) & mGestureDetector.onTouchEvent(ev); // Log.e("SwipeLayout", "-----onInterceptTouchEvent-----"); return result; }如此下來(lái)，整個(gè)View不管是上下拖動(dòng)，還是SwipeLayout的開(kāi)關(guān)滑動(dòng)，都已經(jīng)實(shí)現(xiàn)完成了。最后增加對(duì)應(yīng)overhead，delete以及item的點(diǎn)擊事件，此處完善SwipeAdapter的代碼之后如下。
class MyClickListener implements View.OnClickListener { @Override public void onClick(View v) { Integer position = (Integer) v.getTag(); switch (v.getId()) { case R.id.tv_overhead: //ToastUtils.showToast("position : " + position + " overhead is clicked."); swipeLayoutManager.closeUnCloseSwipeLayout(false); if(onSwipeControlListener != null){ onSwipeControlListener.onOverhead(position, list.get(position)); } break; case R.id.tv_delete: //ToastUtils.showToast("position : " + position + " delete is clicked."); swipeLayoutManager.closeUnCloseSwipeLayout(false); if(onSwipeControlListener != null){ onSwipeControlListener.onDelete(position, list.get(position)); } break; default: break; } } } private OnSwipeControlListener onSwipeControlListener; public void setOnSwipeControlListener(OnSwipeControlListener onSwipeControlListener){ this.onSwipeControlListener = onSwipeControlListener; } /** * overhead 和 delete點(diǎn)擊事件接口 */ public interface OnSwipeControlListener{ void onOverhead(int position, String itemTitle); void onDelete(int position, String itemTitle); }最后貼上MainActivity代碼，此處通過(guò)OnSwipeControlListener接口回調(diào)實(shí)現(xiàn)item的刪除和置頂：
public class MainActivity extends Activity implements OnSwipeControlListener { private ListView listView; private List<String> list = new ArrayList<String>(); private SwipeLayoutManager swipeLayoutManager; private SwipeAdapter swipeAdapter; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initData(); initView(); } private void initData() { for (int i = 0; i < 50; i++) { list.add("content - " + i); } } private void initView() { swipeLayoutManager = SwipeLayoutManager.getInstance(); swipeAdapter = new SwipeAdapter(this); swipeAdapter.setList(list); listView = (ListView) findViewById(R.id.list_view); listView.setAdapter(swipeAdapter); listView.setOnScrollListener(new OnScrollListener() { @Override public void onScrollStateChanged(AbsListView view, int scrollState) { swipeLayoutManager.closeUnCloseSwipeLayout(); } @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { } }); swipeAdapter.setOnSwipeControlListener(this); } @Override public void onOverhead(int position, String itemTitle) { setItemOverhead(position, itemTitle); } @Override public void onDelete(int position, String itemTitle) { removeItem(position, itemTitle); } /** * 設(shè)置item置頂 * * @param position * @param itemTitle */ private void setItemOverhead(int position, String itemTitle) { // ToastUtils.showToast("position : " + position + " overhead."); ToastUtils.showToast("overhead ---" + itemTitle + "--- success."); String newTitle = itemTitle; list.remove(position);//刪除要置頂?shù)膇tem list.add(0, newTitle);//根據(jù)adapter傳來(lái)的Title數(shù)據(jù)在list 0位置插入title字符串，達(dá)到置頂效果 swipeAdapter.setList(list);//重新給Adapter設(shè)置list數(shù)據(jù)并更新 UIUtils.runOnUIThread(new Runnable() { @Override public void run() { listView.setSelection(0);//listview選中第0項(xiàng)item } }); } /** * 刪除item * * @param position * @param itemTitle */ private void removeItem(int position, String itemTitle) { // ToastUtils.showToast("position : " + position + " delete."); ToastUtils.showToast("delete ---" + itemTitle + "--- success."); list.remove(position); swipeAdapter.setList(list);//重新給Adapter設(shè)置list數(shù)據(jù)并更新 }}至此整個(gè)demo基本完成，本次完成的功能基本能夠直接放到項(xiàng)目中使用。其實(shí)最麻煩的地方就在于view的touch事件攔截和處理，不過(guò)將本demo的log打開(kāi)看一下對(duì)比之后，也就能夠理解整個(gè)傳遞過(guò)程了。
完整demo地址：https://github.com/Horrarndoo/SwipeLayout
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持VEVB武林網(wǎng)。
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