android 自定义可以侧滑操作的listview

来源：互联网发布：linux c daemon 编辑：程序博客网时间：2024/06/05 19:09

第一自定义SlideListView2 继承 Listview

最关键的是onTouchEvent 的处理

public class SlideListView2 extends ListView {
private int mScreenWidth; // 屏幕宽度
private int mDownX; // 按下点的x值
private int mDownY; // 按下点的y值
private int mDeleteBtnWidth;// 删除按钮的宽度

private boolean isDeleteShown; // 删除按钮是否正在显示private ViewGroup mPointChild; // 当前处理的itemprivate LinearLayout.LayoutParams mLayoutParams; // 当前处理的item的LayoutParamspublic SlideListView2(Context context, AttributeSet attrs) {    this(context, attrs, 0);}public SlideListView2(Context context, AttributeSet attrs, int defStyle) {    super(context, attrs, defStyle);    // 获取屏幕宽度    WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);    DisplayMetrics dm = new DisplayMetrics();    wm.getDefaultDisplay().getMetrics(dm);    mScreenWidth = dm.widthPixels;}@Overridepublic boolean onTouchEvent(MotionEvent ev) {    switch (ev.getAction()) {        case MotionEvent.ACTION_DOWN:            performActionDown(ev);            break;        case MotionEvent.ACTION_MOVE:            return performActionMove(ev);        case MotionEvent.ACTION_UP:            performActionUp();            break;    }    return super.onTouchEvent(ev);}// 处理action_down事件private void performActionDown(MotionEvent ev) {    if(isDeleteShown) {        turnToNormal();    }else {        mDownX = (int) ev.getX();        mDownY = (int) ev.getY();        // 获取当前点的item        mPointChild = (ViewGroup) getChildAt(pointToPosition(mDownX, mDownY)                - getFirstVisiblePosition());        // 获取删除按钮的宽度        mDeleteBtnWidth = mPointChild.getChildAt(1).getLayoutParams().width;        mLayoutParams = (LinearLayout.LayoutParams) mPointChild.getChildAt(0)                .getLayoutParams();        mLayoutParams.width = mScreenWidth;        mPointChild.getChildAt(0).setLayoutParams(mLayoutParams);    }}// 处理action_move事件private boolean performActionMove(MotionEvent ev) {    int nowX = (int) ev.getX();    int nowY = (int) ev.getY();    if(Math.abs(nowX - mDownX) > Math.abs(nowY - mDownY)) {        // 如果向左滑动        if(nowX < mDownX) {            // 计算要偏移的距离            int scroll = (nowX - mDownX) / 3;            // 如果大于了删除按钮的宽度， 则最大为删除按钮的宽度            if(-scroll >= mDeleteBtnWidth) {                scroll = -mDeleteBtnWidth;            }            // 重新设置leftMargin            mLayoutParams.leftMargin = scroll*3;            mPointChild.getChildAt(0).setLayoutParams(mLayoutParams);        }        return true;    }    return super.onTouchEvent(ev);}// 处理action_up事件private void performActionUp() {    // 偏移量大于button的一半，则显示button    // 否则恢复默认    if(-mLayoutParams.leftMargin >= mDeleteBtnWidth / 3) {        mLayoutParams.leftMargin = -mDeleteBtnWidth*3;        isDeleteShown = true;    }else {        turnToNormal();    }    mPointChild.getChildAt(0).setLayoutParams(mLayoutParams);}/** * 变为正常状态 */public void turnToNormal() {    mLayoutParams.leftMargin = 0;    mPointChild.getChildAt(0).setLayoutParams(mLayoutParams);    isDeleteShown = false;}/** * 当前是否可点击 * @return 是否可点击 * */public boolean canClick() {    return !isDeleteShown;}![这里写图片描述](http://img.blog.csdn.net/20170714140709420?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvTmFpZGVfUw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast)

}
这是自定义得侧滑效果
接下来按照惯例给listview 设置adapter 和点击时间即可

* 第二在adapter中自定义一个点击接口和点击响应方法并给按钮添加点击事件*

SlideListview 的 Adapter

public class SellServiceListAdapter extends BaseAdapter {
Context context;
List<> list;
OnClickListenerEditOrDelete onClickListenerEditOrDelete;
public SellServiceListAdapter(Context context, List<> list) {
this.context=context;
this.list=list;
}

@Overridepublic int getCount() {    return list.size();}@Overridepublic Object getItem(int position) {    return list.get(position);}@Overridepublic long getItemId(int position) {    return position;}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {    View view;    ViewHolder holder;    if (convertView==null){        view = View.inflate(context, R.layout.sellservicelist_item,null);        holder = new ViewHolder();        holder.selldelete = (TextView) view.findViewById(R.id.adsellservice_delete);        holder.selledit = (TextView) view.findViewById(R.id.adsellservice_edit);        holder.sellview = (TextView) view.findViewById(R.id.adsellservice_setview);        view.setTag(holder);    }else {        view = convertView;        holder = (ViewHolder) view.getTag();    }    设置点击     holder.sellview.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {            if (onClickListenerEditOrDelete!=null){                onClickListenerEditOrDelete.OnClickListenersetView(position);            }        }    });    holder.selldelete.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {            if (onClickListenerEditOrDelete!=null){                onClickListenerEditOrDelete.OnClickListenerDelete(position);            }        }    });    holder.selledit.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {            if (onClickListenerEditOrDelete!=null){                onClickListenerEditOrDelete.OnClickListenerEdit(position);            }        }    });    return view;}class ViewHolder{    TextView selldelete,selledit,sellview;}点击接口和响应方法public interface OnClickListenerEditOrDelete{    void OnClickListenerEdit(int position);    void OnClickListenerDelete(int position);    void OnClickListenersetView(int position);}

设置点击的方法
public void setOnClickListenerEditOrDelete(OnClickListenerEditOrDelete onClickListenerEditOrDelete1){
this.onClickListenerEditOrDelete=onClickListenerEditOrDelete1;
}
}
* 第三在activity中初始化SlideListview 并添加点击方法*

SellServiceListAdapter adapter = new SellServiceListAdapter(getActivity(),list);
selllist.setAdapter(adapter);
adapter.setOnClickListenerEditOrDelete(new SellServiceListAdapter.OnClickListenerEditOrDelete() {
@Override
public void OnClickListenerEdit(int position) {
Toast.makeText(getActivity(), “编辑”, Toast.LENGTH_SHORT).show();
}

        @Override        public void OnClickListenerDelete(int position) {            Toast.makeText(getActivity(), "删除", Toast.LENGTH_SHORT).show();        }        @Override        public void OnClickListenersetView(int position) {          Toast.makeText(getActivity(), "展示", Toast.LENGTH_SHORT).show();        }    });

也可以设置成为item 和 button 可同时点击自己挖掘吧

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