Android(Java):Android ListView checkbox 全选效果

先在适配器的getView方法加入红色代码

@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder viewHolder = null;
if(convertView == null) {
viewHolder = new ViewHolder();
convertView = mLayoutInflater.inflate(R.layout.item_record_list, null);
viewHolder.arrow = convertView.findViewById(R.id.riv_arraw);
viewHolder.tvName = (TextView) convertView.findViewById(R.id.rtv_name);
viewHolder.tvRecord = (TextView) convertView.findViewById(R.id.rtv_record);
viewHolder.btnDelete = (Button) convertView.findViewById(R.id.recorddel);
viewHolder.checkBox = (CheckBox) convertView.findViewById(R.id.cb_check);
//设置行高度
AbsListView.LayoutParams params=new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, LayoutManager.dip2px(mContext, LIST_HEIGHT));
convertView.setLayoutParams(params);
convertView.setTag(viewHolder);
}else {
viewHolder = (ViewHolder) convertView.getTag();
}
convertView.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
view = v;
if (event.getAction() == MotionEvent.ACTION_DOWN) {
v.setBackgroundResource(R.color.dongao_orange);
}else{
v.setBackgroundResource(0);
}
return gd.onTouchEvent(event);
}

});
final StudyLog record = records.get(position);
viewHolder.tvName.setText(record.getName());
viewHolder.tvRecord.setText(record.getLog());
viewHolder.btnDelete.setVisibility(record.getStatus());
viewHolder.checkBox.setVisibility(visibility);//是否编辑状态编辑状态显示checkbox
viewHolder.checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {//先注册选中事件

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
record.setCheck(buttonView.isChecked());//记录选中状态
handler.sendEmptyMessage(0);//从Activity传过来的handler
}

});
viewHolder.checkBox.setChecked(record.isCheck());//设置选中状态
RelativeLayout.LayoutParams margin = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT,RelativeLayout.LayoutParams.WRAP_CONTENT);
if(visibility == View.VISIBLE){
viewHolder.arrow.setVisibility(View.GONE);
margin.setMargins(45, 8, 0, 0);
}else{
viewHolder.arrow.setVisibility(View.VISIBLE);
margin.setMargins(35, 8, 0, 0);
}
viewHolder.tvName.setLayoutParams(margin);
convertView.setId(position);
return convertView;
}

activity里面的handler：

private Handler handler=new Handler(){
public void handleMessage(Message msg) {
num = 0;
datas = mRecordAdapter.getRecords();
for(StudyLog log : datas) {//适配器是懒加载模式，当超过一页的时候会出现计数不准
if(log.isCheck()){
num ++;
}
}
if(num == datas.size()){
mBtnCheckall.setText(R.string.cancelcheckall);
}else{
mBtnCheckall.setText(R.string.checkall);
}
mBtnDelete.setText(String.format(getString(R.string.delete), num));
};
};

由于checkbox比较小很难点击，很有可能引起其他事件，所以我想在长按事件实现其选中功能，但是用户体验性不好，用户不容易发现。最终在单击时判断是不是编辑状态，如果是就选中，否则就执行其他事件。

@Override
public boolean onSingleTapUp(MotionEvent e) {
// TODO Auto-generated method stub
if(visibility == View.GONE){
playVideo(view.getId());
return false;
}
ViewHolder vh = (ViewHolder) view.getTag();
boolean check = !vh.checkBox.isChecked();
vh.checkBox.setChecked(check);
return false;
}

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