6
我在我的logcat中發現一個錯誤:「你的內容必須有一個ListView,它的id屬性是android。 R.id.list'」。我的代碼編譯並運行,但強制關閉時,我開始我的列表視圖活動。我檢查了許多類似的問題,這似乎是一個常見問題,但我仍然無法修復我的代碼。Listview錯誤:「你的內容必須有一個ListView的id屬性是'android.R.id.list'」
宣言:
private ListView lv;
Context mContext;
List mList;
String[] testcontacts;
MessageView aa = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.firstlist);
testcontacts = getResources()
.getStringArray(R.array.testcontacts_array);
aa = new MessageView();
lv = getListView();/*(ListView) lv.findViewById(R.id.list); Had to comment out, it cannot find list*/
lv.setAdapter(aa);
lv.setTextFilterEnabled(true);
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// When clicked, show a toast with the TextView text
Toast.makeText(getApplicationContext(),
((TextView) view).getText(), Toast.LENGTH_SHORT).show();
}
});
}
class MessageView extends ArrayAdapter<String> {
MessageView() {
super(FirstLoginActivity.this, android.R.layout.activity_list_item,
testcontacts);
// TODO Auto-generated constructor stub
}
public View getView(int position, View convertview, ViewGroup parent) {
Log.d("Ebz", "inside getView method");
ViewHolder holder;
View v = convertview;
if (v == null) {
Log.d("Ebz", "if v == null");
LayoutInflater inflater = getLayoutInflater();
v = inflater.inflate(R.layout.list_items, null);
holder = new ViewHolder();
holder.firstLine = (TextView) v.findViewById(R.id.firstLine);
holder.secondLine = (TextView) v.findViewById(R.id.secondLine);
holder.icon1 = (ImageView) v.findViewById(R.id.icon1);
holder.icon2 = (ImageView) v.findViewById(R.id.icon2);
v.setTag(holder);
} else {
holder = (ViewHolder) v.getTag();
}
holder.firstLine.setText(testcontacts[position]);
holder.secondLine.setText(testcontacts[position]);
holder.icon1.setImageBitmap(null);
holder.icon2.setImageBitmap(null);
// call the images directly?
return v;
}
class ViewHolder {
TextView firstLine;
TextView secondLine;
ImageView icon1;
ImageView icon2;
}
}
}
我的XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/top_control_bar"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_weight="1"
android:background="#cc252a"
android:paddingBottom="10dp"
android:paddingLeft="10dp"
android:paddingTop="10dp"
android:text="This will be Changed"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
<LinearLayout
android:id="@+id/bottom_control_bar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" >
</LinearLayout>
<ListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_above="@id/bottom_control_bar"
android:layout_below="@id/top_control_bar"
android:choiceMode="multipleChoice" />
</RelativeLayout>
我時listItems:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/top_control_bar"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_weight="1"
android:background="#cc252a"
android:paddingBottom="10dp"
android:paddingLeft="10dp"
android:paddingTop="10dp"
android:text="This will be Changed"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
<LinearLayout
android:id="@+id/bottom_control_bar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" >
</LinearLayout>
<ListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_above="@id/bottom_control_bar"
android:layout_below="@id/top_control_bar"
android:choiceMode="multipleChoice"
android:divider="#cc252a"
android:dividerHeight="14.5dp" />
</RelativeLayout>
我不認爲我知道你的意思。它看起來像我有列表視圖在那裏確切地鍵入它 – 2012-01-02 20:59:43
當我複製並粘貼代碼我得到一個錯誤「lv =(ListView)lv.findViewById(R.id.list);」 .list列表無法解析或不是字段 – 2012-01-02 21:34:49
它不起作用,當我使用lv = getListView(); – 2012-01-02 22:00:37