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[英]Change background colour of current listview item in adapter getView method
[英]Change TextView colour and text in getView(…) in ListView adapter
我搜索过这个,我可以找到我需要的答案......
我有一个导航抽屉ListView
,当我在列表中单击一个项目时,我希望能够从中获取TextView
,并更改其背景颜色,文本颜色并使文本变为粗体。
我尝试通过执行以下操作来获取TextView
;
adapter_navList = new ArrayAdapter<String>(this, R.layout.listview_navdrawer, drawerItems) {
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
TextView item = (TextView) lv_navList.getItemAtPosition(i);
// Code to set the background, formatting, colour, etc.
return view;
}
};
lv_navList.setAdapter(adapter_navList);
但是,我一直收到以下错误:
java.lang.ClassCastException:java.lang.String无法强制转换为android.widget.TextView
我该如何解决这个问题?
您可以使用以下内容:
adapter_navList = new ArrayAdapter<String>(this, R.layout.listview_navdrawer, drawerItems) {
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
TextView mytextview=(TextView)view;
mytextview.setTextColor(Color.BLUE);
mytextview.setTextSize(14);
// Other code you may want to add
return view;
}
};
lv_navList.setAdapter(adapter_navList);
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