0
我有一个自定义BaseAdapter,该行中有一些视图。
主要是一个复选框(ImageView)和按钮(ImageView)和隐藏文本(TextView)。
每当我点击复选框,我想改变它的可绘制,它似乎工作,但只有当我notifyDataSetChanged
- 哪些IMO应该不重要。如果我删除这条线,那么它有时会起作用,有时不起作用。
更重要的部分是我希望按钮显示/隐藏holder.expansion
但它不起作用。无论v.getTag()
我也试图使用holder.expansion
,但它也没有工作。OnClickListener不会更改自定义BaseAdapter中的视图
我怎样才能使它工作?要更改复选框可绘制并显示/隐藏扩展文本?
@Override
public View getView(int position, View view, ViewGroup parent)
{
final DrugHolder holder;
if (view == null)
{
holder = new DrugHolder();
view = inflater.inflate(R.layout.drug_list_row, null);
holder.name = (TextView) view.findViewById(R.id.drug_list_name);
holder.checkbox = (ImageView) view.findViewById(R.id.drug_list_checkbox);
holder.arrow = (LinearLayout) view.findViewById(R.id.drug_list_arrow_button);
holder.expansion = (LinearLayout) view.findViewById(R.id.drug_list_expansion);
holder.fullName = (TextView) view.findViewById(R.id.drug_list_full_name);
holder.quantity = (TextView) view.findViewById(R.id.drug_list_quantity);
holder.unitDose = (TextView) view.findViewById(R.id.drug_list_unit_dose);
view.setTag(holder);
}
else
{
holder = (DrugHolder) view.getTag();
}
int colorPos = position % colors.length;
view.setBackgroundColor(colors[colorPos]);
Drug drug = allItems.get(position);
holder.name.setText(drug.Name);
holder.fullName.setText(drug.Name);
holder.quantity.setText(String.format(Locale.GERMANY, "%.2f", drug.Quantity));
holder.unitDose.setText(drug.DoseType);
holder.arrow.setTag(holder.expansion);
holder.checkbox.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
ImageView view = (ImageView) v;
if (view.isSelected())
{
view.setSelected(false);
view.setImageDrawable(context.getDrawable(R.drawable.ic_icon_checkbox_unchecked));
}
else
{
view.setSelected(true);
view.setImageDrawable(context.getDrawable(R.drawable.ic_icon_checkbox_checked));
}
notifyDataSetChanged();
}
});
holder.arrow.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
LinearLayout view = (LinearLayout) v.getTag();
if (view.getVisibility() == View.VISIBLE)
{
view.setVisibility(View.GONE);
}
else
{
view.setVisibility(View.VISIBLE);
}
notifyDataSetChanged();
}
});
return view;
}
根据变化的主张我做了这一点:
if (drug.isChecked()) //Here breakpoint - enters only when entering activity
{
holder.checkbox.setImageDrawable(context.getDrawable(R.drawable.ic_icon_checkbox_checked));
}
else
{
holder.checkbox.setImageDrawable(context.getDrawable(R.drawable.ic_icon_checkbox_unchecked));
}
if (drug.isExpanded())
{
holder.fullName.setVisibility(View.VISIBLE);
}
else
{
holder.fullName.setVisibility(View.GONE);
}
holder.checkbox.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
drug.setChecked(!drug.isChecked()); // Breakpoint - enters when clicks
notifyDataSetChanged(); // After F8 goes to this line but never goes to getView again
}
});
holder.arrow.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
drug.setExpanded(!drug.isExpanded()); // Breakpoint - enters when click
notifyDataSetChanged(); // Never goes to this line after F8 - instead it jumps to View.java and shows red block with 'Source code does not match byte code
}
});
是的,应该插入此项以设置ListView项目中的CheckBox图像。要在单击后设置CheckBox图像,应将其插入onClick方法中并更改为:drug.setChecked(!drug.isChecked()),然后再转到上面的代码。 – Alexandre
同样用于显示扩展?在这种情况下,我应该运行notifyDataSetChanged(),对吧? –
在监听器中,您将setCheck在药物中并调用notifyDataSetChanged –