[英]Android Studio ListView from SQLite
我正在使用Android Studio。在ListView上顯示來自SQLite數據庫的數據時遇到問題。 這是一種從SQLite獲取數據的方法(效果很好,已選中)
public List<Terminy> getAllItems(){
List<Terminy> itemList = new ArrayList<Terminy>();
String selectQuery = "SELECT id,data FROM Terminy WHERE Wolny = 1";
SQLiteDatabase database = this.getWritableDatabase();
Cursor cursor = database.rawQuery(selectQuery, null);
if(cursor.moveToFirst()){
do{
Terminy termin = new Terminy();
termin.setId2(Integer.parseInt(cursor.getString(0)));
termin.setData(cursor.getString(1));
itemList.add(termin);
}while(cursor.moveToNext());
}
cursor.close();
return itemList;
}
並且有將數據放入ListView的方法
public void ButtonLista(View v)
{
ArrayAdapter<Terminy> adapter;
ArrayList<Terminy> lista;
DatabaseHelper helper = new DatabaseHelper(this);
ListView listView = (ListView) findViewById(R.id.listView);
lista = new ArrayList<>(helper.getAllItems());
adapter = new ArrayAdapter<Terminy>(this,R.layout.activity_panel_uzytkownik, lista);
listView.setAdapter(adapter);
adapter.notifyDataSetChanged();
LogCat錯誤
com.example.czou.proojekt E/ArrayAdapter: You must supply a resource ID for a TextView com.example.czou.proojekt D/AndroidRuntime: Shutting down VM com.example.czou.proojekt W/art: Suspending all threads took: 02-08 17:47:59.352 1779-1779/com.example.czou.proojekt E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.czou.proojekt, PID: 1779 java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView
有人可以幫我嗎? 到目前為止,我已經閱讀了許多教程,但仍然不知道如何解決我的問題:(
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.czou.proojekt.PanelUzytkownik">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Button"
android:id="@+id/button"
android:layout_alignParentBottom="true"
android:onClick="ButtonLista" />
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/listView"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginBottom="80dp" />
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