Android优化Adapter内的Click、LongClick

来源：互联网发布：工程网络计划图编辑：程序博客网时间：2024/06/04 23:21

通过对convertView设置tag，来保存当前点击的pos

为解决点击item无法获取当前的pos，同时长按点击和点击两个动作，无法再adapter里很好的区分，设计OnConvertViewClickListener继承View.OnClickListener，对convertView和pos保存，pos保存在convertView的tag内，getTag后，回调clickCallback响应点击

public abstract class OnConvertViewClickListener implements View.OnClickListener {    private View convertView;    private int[] positionIds;    public OnConvertViewClickListener(View convertView, int... positionIds) {        this.convertView = convertView;        this.positionIds = positionIds;    }    @TargetApi(Build.VERSION_CODES.DONUT)    @Override    public void onClick(View v) {        int len = positionIds.length;        int[] positions = new int[len];        for (int i = 0; i < len; i++) {            positions[i] = (int) convertView.getTag(positionIds[i]);        }        onClickCallBack(v, positions);    }    public abstract void onClickCallBack(View registedView, int... positionIds);}

同理对longClick也做相同的设置：

public abstract class OnConvertViewLongClickListener implements View.OnLongClickListener {    private View convertView;    private int[] positionIds;    public OnConvertViewLongClickListener(View convertView, int... positionIds) {        this.convertView = convertView;        this.positionIds = positionIds;    }    @Override    public boolean onLongClick(View v) {        int len = positionIds.length;        int[] positions = new int[len];        for (int i = 0; i < len; i++) {            positions[i] = (int) convertView.getTag(positionIds[i]);        }        onLongClickCallBack(v, positions);        return false;    }    public abstract void onLongClickCallBack(View registedView, int... positionIds);}

之后再adapter，调用view.setOnClickListener(new OnConvertViewClickListener(convertView, POSITION) ，其中POSITION是常量，用来保存tag的标识，（注意在getView初始化setTag(POSITION, position)，这样才能正确的获取点击pos）

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