我有一个自定义数组适配器，我想为每一行中的按钮添加一个 onclicklistener，当我单击按钮时，我希望图像资源发生变化，一切正常，除了当我单击按钮时图像发生变化但另一行中的另一个按钮的图像也会发生变化。感谢您的帮助 ！
这是我的代码：
public class Coursadapter extends ArrayAdapter<String>{
Context context;
int layoutResourceId;
ArrayList<String> data = null;
WeatherHolder holder;
public Coursadapter(Context context, int layoutResourceId, ArrayList<String> data) {
// super(context, layoutResourceId, data, coeff);
super(context, layoutResourceId, data);
this.layoutResourceId = layoutResourceId;
this.context = context;
this.data = data;
}
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
if(row == null)
{
LayoutInflater inflater = ((Activity)context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new WeatherHolder();
holder.name = (TextView)row.findViewById(R.id.item_cours_name);
holder.b=(ImageButton) row.findViewById(R.id.button);
holder.b.setTag(holder);
row.setTag(holder);
}
else
{
holder = (WeatherHolder)row.getTag();
}
holder.b.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
WeatherHolder w = (WeatherHolder) v.getTag();
w.b.setImageResource(R.drawable.butgreen);
}
});
String name1 = data.get(position);
holder.name.setText(name1);
return row;
}
static class WeatherHolder
{
TextView name;
ImageButton b;
}
}
做了一些改动，查看代码
包 com.example.dontpanic;
public class Coursadapter extends ArrayAdapter<String> {
Context context;
int layoutResourceId;
ArrayList<String> data = null;
WeatherHolder holder;
public Coursadapter(Context context, int layoutResourceId,
ArrayList<String> data) {
// super(context, layoutResourceId, data, coeff);
super(context, layoutResourceId, data);
this.layoutResourceId = layoutResourceId;
this.context = context;
this.data = data;
}
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
if (row == null) {
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new WeatherHolder();
holder.name = (TextView) row.findViewById(R.id.item_cours_name);
holder.b = (ImageButton) row.findViewById(R.id.button);
holder.b.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
WeatherHolder w = (WeatherHolder) v.getTag();
w.b.setImageResource(R.drawable.butgreen);
}
});
row.setTag(holder);
} else {
holder = (WeatherHolder) row.getTag();
}
holder.b.setTag(holder);
String name1 = data.get(position);
holder.name.setText(name1);
return row;
}
static class WeatherHolder {
TextView name;
ImageButton b;
}
}
将您的点击侦听器放在 if 条件内，并将标记设置在 if else 条件之外
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