本案例主要实现了ListView和ExpandableListView的侧滑删除操作功能
效果图：
代码：
自定义ListView
public class ZQListView extends ListView {
private static final String TAG ="ZQListView ";
private ZQView mFocusedItemView;
float mX = 0;
float mY = 0;
private int mPosition = -1;
boolean isSlider = false;
public ZQListView(Contextcontext) {
super(context);
}
public ZQListView(Contextcontext, AttributeSet attrs) {
super(context,attrs);
}
public ZQListView(Contextcontext, AttributeSet attrs,int defStyle) {
super(context,attrs, defStyle);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
float x =event.getX();
float y =event.getY();
switch(event.getAction()) {
case MotionEvent.ACTION_DOWN:
isSlider = false;
mX = x;
mY = y;
int position= pointToPosition((int) x, (int) y);
if (mPosition !=position) {
mPosition =position;
if (mFocusedItemView !=null) {
mFocusedItemView.reset();
}
}
break;
case MotionEvent.ACTION_MOVE:
if (mPosition != -1) {
if (Math.abs(mY - y) <30 && Math.abs(mX - x) > 20) {
int first =this.getFirstVisiblePosition();
int index =mPosition - first;
mFocusedItemView =(ZQView) getChildAt(index);
mFocusedItemView.onTouchEvent(event);
isSlider = true;
return true;
}
}
break;
case MotionEvent.ACTION_UP:
if (isSlider) {
isSlider = false;
if (mFocusedItemView !=null) {
mFocusedItemView.adjust(mX - x >0);
return true;
}
}
break;
}
return super.onTouchEvent(event);
}
}
侧滑布局类
public class ZQView extends LinearLayout {
private static final String TAG ="SlideView";
private static final int TAN = 2;
private int mHolderWidth = 120;
private float mLastX = 0;
private float mLastY = 0;
private Context mContext;
private LinearLayout mViewContent;
private Scroller mScroller;
public ZQView(Contextcontext, Resources resources) {
super(context);
initView();
}
public ZQView(Contextcontext) {
super(context);
initView();
}
public ZQView(Contextcontext, AttributeSet attrs) {
super(context,attrs);
initView();
}
private void initView() {
setOrientation(LinearLayout.HORIZONTAL);
mContext = getContext();
mScroller = new Scroller(mContext);
View.inflate(mContext,R.layout.delete_view,this);
mViewContent = (LinearLayout)findViewById(R.id.view_content);
mHolderWidth = Math.round(TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP,mHolderWidth,getResources()
.getDisplayMetrics()));
}
public void setContentView(View view) {
mViewContent.addView(view);
}
public void shrink(){
int offset =getScrollX();
if (offset== 0) {
return;
}
scrollTo(0, 0);
}
public void reset() {
int offset =getScrollX();
if (offset== 0) {
return;
}
smoothScrollTo(0, 0);
}
public void adjust(boolean left) {
int offset =getScrollX();
if (offset== 0) {
return;
}
if (offset< 20) {
this.smoothScrollTo(0,0);
} else if (offset< mHolderWidth - 20) {
if (left) {
this.smoothScrollTo(mHolderWidth, 0);
} else {
this.smoothScrollTo(0,0);
}
} else {
this.smoothScrollTo(mHolderWidth, 0);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch(event.getAction()) {
case MotionEvent.ACTION_MOVE:
float x =event.getX();
float y =event.getY();
float deltaX =x -mLastX;
float delatY =y -mLastY;
mLastX = x;
mLastY = y;
if (Math.abs(deltaX)< Math.abs(delatY) *TAN) {
break;
}
if (deltaX!= 0) {
float newScrollX = getScrollX() - deltaX;
if(newScrollX < 0) {
newScrollX = 0;
} else if(newScrollX > mHolderWidth) {
newScrollX = mHolderWidth;
}
this.scrollTo((int)newScrollX, 0);
}
break;
}
return super.onTouchEvent(event);
}
private void smoothScrollTo(int destX,int destY) {
int scrollX =getScrollX();
int delta =destX - scrollX;
mScroller.startScroll(scrollX,0, delta, 0, Math.abs(delta) * 3);
invalidate();
}
@Override
public void computeScroll() {
if (mScroller.computeScrollOffset()){
scrollTo(mScroller.getCurrX(),mScroller.getCurrY());
postInvalidate();
}
}
布局文件
delete.xml
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:Android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/view_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
</LinearLayout>
<RelativeLayout
android:id="@+id/holder"
android:layout_width="120dp"
android:layout_height="match_parent"
android:background="@drawable/holder_bg"
android:clickable="true">
<TextView
android:id="@+id/delete"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:drawableLeft="@drawable/del_icon_normal"
android:gravity="center"
android:text="删除"
android:textColor="@color/floralwhite"/>
</RelativeLayout>
</merge>
listview.xml
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.example.util.ZQListView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#fff4f7f9"
android:cacheColorHint="#00000000"
android:divider="#6c6c6c"
android:dividerHeight="1dp"
android:drawSelectorOnTop="false"
android:listSelector="#00000000"
android:scrollbars="none"
android:scrollingCache="false"/>
</LinearLayout>
Activity和适配器类
public class ActivityListViewDelete extends Activity implements
OnItemClickListener, OnClickListener {
private ZQListView mListView;
private List<MessageItem> mMessageItems = new ArrayList<ActivityListViewDelete.MessageItem>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
public static int[] Img = {R.drawable.ssdk_oks_classic_qq,
R.drawable.ssdk_oks_classic_qzone,
R.drawable.ssdk_oks_classic_shortmessage,
R.drawable.ssdk_oks_classic_sinaweibo,
R.drawable.ssdk_oks_classic_tencentweibo,
R.drawable.ssdk_oks_classic_vkontakte,
R.drawable.ssdk_oks_classic_wechat,
R.drawable.ssdk_oks_classic_wechatfavorite,
R.drawable.ssdk_oks_classic_wechatmoments,
R.drawable.ssdk_oks_classic_yixinmoments };
private void initView() {
mListView = (ZQListView)findViewById(R.id.list);
int length = Img.length;
for (int i = 0; i< length; i++) {
MessageItem item = new MessageItem();
item.iconRes = Img[i];
item.title = "标题" + (i + 1);
item.msg = "消息" + (i + 1);
item.time = "2016-6-1" + i;
mMessageItems.add(item);
}
mListView.setAdapter(newSlideAdapter());
mListView.setOnItemClickListener(this);
}
private class SlideAdapter extends BaseAdapter {
private LayoutInflater mInflater;
SlideAdapter() {
super();
mInflater =getLayoutInflater();
}
@Override
public int getCount() {
return mMessageItems.size();
}
@Override
public Object getItem(int position) {
return mMessageItems.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroupparent) {
ViewHolder holder;
ZQView slideView = (ZQView)convertView;
if(slideView == null) {
View itemView = mInflater.inflate(R.layout.list_item,null);
slideView = newZQView(ActivityListViewDelete.this);
slideView.setContentView(itemView);
holder = newViewHolder(slideView);
slideView.setTag(holder);
} else {
holder = (ViewHolder) slideView.getTag();
}
MessageItem item = mMessageItems.get(position);
slideView.shrink();
holder.icon.setImageResource(item.iconRes);
holder.title.setText(item.title);
holder.time.setText(item.time);
holder.deleteHolder.setOnClickListener(ActivityListViewDelete.this);
return slideView;
}
}
public class MessageItem {
public int iconRes;
public String title;
public String msg;
public String time;
}
private static class ViewHolder {
public ImageViewicon;
public TextView title;
public TextView time;
public ViewGroup deleteHolder;
ViewHolder(View view) {
icon =(ImageView) view.findViewById(R.id.icon);
title =(TextView) view.findViewById(R.id.title);
time =(TextView) view.findViewById(R.id.time);
deleteHolder =(ViewGroup) view.findViewById(R.id.holder);
}
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Toast.makeText(this,"onItemClickposition=" + position, 1).show();
}
@Override
public void onClick(View v) {
if(v.getId() == R.id.holder) {
Toast.makeText(this,"删除操作",1).show();
}
}
}
此代码是ListView的侧滑删除操作，ExpandableListView未贴出来，下载代码即可，两个都有。
源码下载：
（注：ExpandableListView的侧滑删除有点错误）
Eclipse下载：http://download.csdn.net/detail/dickyqie/9627652
AndroidStudio下载：https://github.com/DickyQie/ListViewExpandableListViewDelete