[英]adding itemClickListener on items e.g.(TextViews, Images, Buttons) within in a customized ListView
我們可以在自定義ListView內的項目(例如TextViews,Images,Buttons)上添加itemClickLIstener嗎? 如是? 然后我們將在其中編寫偵聽器代碼
當然..您可以通過兩種方式添加它
1)。 通過在xml文件中定義函數並在自定義適配器類的getview或bindview中定義這些函數。
2)。 或通過在自定義適配器類的bindview或getview中定義onclick偵聽器。
@Override
public View getView(int position, View view, ViewGroup parent) {
if (view == null) {
Button btn = (Button) view.findViewById(R.id.btn);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
});
}
return view;
}
您可以在自定義ListView中定義的Items上添加onClickListeners。 請參考以下代碼
holder.txtIncident.setOnClickListener
public View getView(final int position, View convertView,
ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
convertView = l_Inflater.inflate(R.layout.headline_item, null);
holder = new ViewHolder();
holder.txtIncident = (TextView) convertView
.findViewById(R.id.txtIncident);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.txtIncident.setText(String.valueOf(itemList.get(position)
.getIncident()));
holder.txtIncident.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
});
return convertView;
}
是的,您可以為每個列表項中的組件創建偵聽器。 您可以通過創建一個自定義列表適配器並在其getView方法中設置偵聽器來做到這一點。
public class MyAdapter extends ArrayAdapter<String> {
private int resourceId;
private String[] objects;
public MyAdapter(Context context, int resourceId, String[] objects) {
super(context, resourceId,objects);
this.resourceId = resourceId;
this.objects = objects;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(resourceId, null);
}
//Make sure that you use convertView.findViewById and not just findViewById!
TextView textView1 = convertView.findViewById(R.id.yourTextViewsId);
textView1.setText(objects[position]);
textView1.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view) {
//do something here
}
});
return convertView;
}
}
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