[英]Android TextView casting error: android.widget.LinearLayout cannot be cast to android.widget.TextView
[英]android.widget.LinearLayout cannot be cast to android.widget.TextView
我在運行時添加了一個ListView
,如下所示:
MainMenue = getResources().getStringArray(R.array.Unit);
// remove all controls
LinearLayout formLayout = (LinearLayout)findViewById(R.id.submenue);
formLayout.removeAllViews();
menueview = new ListView(getApplicationContext());
menueview.setVisibility(ListView.VISIBLE);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
params.gravity = Gravity.RIGHT;
menueview.setLayoutParams(params);
menueview.setAdapter(new submenueadapter(menueview.getContext(), MainMenue));
// Set the on Item
SetMenueOnClick() ;
formLayout.addView(menueview);
然后我添加一個項目點擊監聽器,如下所示:
public void SetMenueOnClick() {
menueview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
final String text = (String) ((TextView)view).getText();
}
});
}
但后來我有一個錯誤:
06-03 10:59:25.862: E/AndroidRuntime(14732): at android.view.ViewRoot.handleMessage(ViewRoot.java:2109)
android.widget.LinearLayout cannot be cast to android.widget.TextView
在這一行:
final String text = (String) ((TextView)view).getText();
知道如何在這個問題上得到文本嗎? 適配器看起來像這樣:
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.shortmenue, parent, false);
TextView textView = (TextView) rowView.findViewById(R.id.contents);
textView.setText(values[position]);
// Change icon based on name
String s = values[position];
System.out.println(s);
rowView.setBackgroundResource(R.drawable.alternate_list_color);
return rowView;
}
和R.layout.shortmenue
很簡單,只有像下面這樣的TextView
:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/contents"
android:textSize="34dp"
/>
</LinearLayout>
您的行是由LinearLayout
包裝的TextView
,因此您可能希望這樣做:
LinearLayout ll = (LinearLayout) view; // get the parent layout view
TextView tv = (TextView) ll.findViewById(R.id.contents); // get the child text view
final String text = tv.getText().toString();
如果您遇到類似問題,但確定已針對linearLayout:
刪除文件gen / your.app.package / R.java。
這是因為xml錯誤,當您刪除R.java時,它將在下一次構建/運行時重新創建。
我剛剛將android:id =“@ + id / my_layout”添加到了包裝TextView並解決了類似問題的LinearLayout。
我有同樣的問題,我只是重命名插入的視圖對象。
像這樣:
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/newTextViewName"
android:textSize="34dp"
/>
在我的例子中,XML包含TextView,但我寫錯了
final TextView text = (TextView) inflater.inflate(R.layout.item_text, layout);
代替
final TextView text = (TextView) inflater.inflate(R.layout.item_text, layout, false);
您可以通過替換來解決此問題
final String text = (String) ((TextView)view).getText();
同
TextView temp= (TextView) view.findViewById(R.id.textView);
這適合我。
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