我的列表视图有问题,我显示一个项目和子项目,我想在数据库中插入两个但它不起作用!!错误是我无法将其强制转换为文本视图 请有人帮助我。
这是我得到的错误:
java.lang.ClassCastException: android.widget.TwoLineListItem cannot be cast to android.widget.TextView
这里是列表视图的代码:
String[] databaseColumnNames = new String[] { DBAdapter.col_N_Ordre,DBAdapter.col_Nom_prénom};
int[] toViewIDs = new int[] { android.R.id.text1,android.R.id.text2 };
SimpleCursorAdapter myCursordapter = new SimpleCursorAdapter(this,android.R.layout.simple_expandable_list_item_2 , cursor, databaseColumnNames, toViewIDs);
ListView list = (ListView) findViewById(android.R.id.list);
list.setAdapter(myCursordapter);
这里是插入代码:
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(final AdapterView<?> arg0, View arg1,
final int position, long arg3) {
Toast.makeText(getApplicationContext(), " " + position, Toast.LENGTH_LONG).show();
final String s = ((TextView)arg1).getText().toString();
db.insertest(s);
查询是:
public long insertest(String region) {
ContentValues initialValues = new ContentValues();
initialValues.put(col_Region,region);
//initialValues.put(col_Provence_prefecture );
return db.insert(MENAGE,null, initialValues);
}
答案 0 :(得分:1)
将以下代码放入listview项目中,单击侦听器
TextView v1 = (TextView)arg1.findViewById(android.R.id.text1);
String first = v1.getText().toString();
TextView v2 = (TextView)arg1.findViewById(android.R.id.text2);
String second = v2.getText().toString();
ContentValues cv = new ContentValues();
cv.put(DBAdapter.col_Region, first);
cv.put(DBAdapter._id, second);
myCursordapter.notifyDataSetChanged();
list.setAdapter(adapter);
DBAdapter sql_Adapter = new DBAdapter(context);
sql_Adapter.open();
db.insertest(cv);
sql_Adapter.close();