如何在android中使用加号和减号按钮更新适配器中的EditText
我从服务器更新数据,并使用ArrayAdapter打开EditText。但是我正在使用加号(p)和减号(m)按钮,请参见如何在android中使用加号和减号按钮更新适配器中的EditText,android,android-edittext,adapter,Android,Android Edittext,Adapter,我从服务器更新数据,并使用ArrayAdapter打开EditText。但是我正在使用加号(p)和减号(m)按钮,请参见 这幅画。但无法更新。你知道怎么做吗 对于Plus: holder.imgPlus.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { int currentQty = Integer
这幅画。但无法更新。你知道怎么做吗 对于Plus:
holder.imgPlus.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int currentQty = Integer.parseInt(newDataItems.get(position).qty.toString());
for (int i = 0; i < listEdit.size(); i++) {
if (position==i)) {
int finalQty = currentQty + 1;
holder.etShoppingCartQty.setText(""+finalQty);
//listEdit.get(i).setText("" + finalQty);
}
}
}
});
和自动更新总值。每当单击加减按钮。遵循以下步骤:
holder.imgPlus.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int currentQty = Integer.parseInt(newDataItems.get(position).qty.toString());
int finalQty = currentQty + 1;
//holder.etShoppingCartQty.setText(""+finalQty);
newDataItems.get(position).setQty(finalQty);
notifyDataSetChanged();
}
});
在适配器中,当绑定到itemview(获取视图)时,将侦听器设置为按钮 发布您自己的代码:)并进行一些小调整
holder.imgPlus.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int currentQty = Integer.parseInt(newDataItems.get(position).qty.toString());
for (int i = 0; i < listEdit.size(); i++) {
if (position==i)) {
int finalQty = currentQty + 1;
holder.etShoppingCartQty.setText(""+finalQty);
// Uncommenting below line
listEdit.get(i).setText("" + finalQty);
}
}
// To notify adapter that data set has been changed
notifyDataSetChanged();
}
});
holder.imgPlus.setOnClickListener(新的OnClickListener(){
@凌驾
公共void onClick(视图v){
int currentQty=Integer.parseInt(newDataItems.get(position.qty.toString());
对于(int i=0;i
适配器代码请在按钮中读取notifyDataSetChanged()
,然后单击for
循环执行
public View getView(final int position, View convertView, ViewGroup parent) {
if(convertView == null){
...inflate
}
//I love ViewHolder pattern, you can not use it
final ViewHolder vh = new ViewHolder(vh);
vh.plus.setOnClickListener(new OnCLickListaner(){
@Override
public void onClick(View v){
//as your example
int currentQty = Integer.parseInt(newDataItems.get(position).qty.toString());
currentQty++;
//...update data (qty), do work to save data changes in model
notifyDataSetChanged();
// or vh.editText.setText("" + currentQty); if you no need to update data
}
});
return view;
}
holder.imgPlus.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int currentQty = Integer.parseInt(newDataItems.get(position).qty.toString());
for (int i = 0; i < listEdit.size(); i++) {
if (position==i)) {
int finalQty = currentQty + 1;
holder.etShoppingCartQty.setText(""+finalQty);
// Uncommenting below line
listEdit.get(i).setText("" + finalQty);
}
}
// To notify adapter that data set has been changed
notifyDataSetChanged();
}
});