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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
我搜索過這個,我可以找到我需要的答案......
我有一個導航抽屜ListView
,當我在列表中單擊一個項目時,我希望能夠從中獲取TextView
,並更改其背景顏色,文本顏色並使文本變為粗體。
我嘗試通過執行以下操作來獲取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,我一直收到以下錯誤:
java.lang.ClassCastException:java.lang.String無法強制轉換為android.widget.TextView
我該如何解決這個問題?
您可以使用以下內容:
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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