public class FoodTypeAdapter extends BaseAdapter {
private Context context;
public FoodTypeAdapter(Context context) {
this.context = context;
}
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder = null;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.food_type_grid,
new LinearLayout(context));
holder = new ViewHolder();
holder.btnAdd = (Button) convertView.findViewById(R.id.btnItemAdd);
holder.etQty = (EditText) convertView.findViewById(R.id.etfItemQty);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.btnAdd.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String quantity = holder.etQty.getText().toString();
System.out.println(quantity);
}
});
return convertView;
}
public int getCount() {
return mylist.size();
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
static class ViewHolder {
Button btnAdd;
EditText etQty;
}
}
在此代码中,如果没有将 holder
作为 final
Object
,我无法从 OnClickListener
访问它。
如果我将其设置为 final
Object
我无法像 holder = new ViewHolder(); 那样启动
.holder
现在我能做什么?任何帮助都将非常感激。
谢谢, 古纳
最佳答案
您还可以简单地调整 holder
的初始化,从而降低代码复杂性:
final ViewHolder holder;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.food_type_grid,
new LinearLayout(context));
holder = new ViewHolder();
holder.btnAdd = (Button) convertView.findViewById(R.id.btnItemAdd);
holder.etQty = (EditText) convertView.findViewById(R.id.etfItemQty);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
关于java - 从匿名内部类访问非最终变量,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25361698/