您好我正在尝试将数据从我的 sqlite 数据库获取到列表视图。我已经尝试了几种方法,但总是给我错误。(是的,我已经尝试修复该行的代码,但未成功)。编码:
Cursor cursor = db.getAllmeds();
String[] list = null;
int i = 0;
cursor.moveToFirst();
for (cursor.moveToFirst();!cursor.isAfterLast();cursor.moveToNext()){
list[i]=cursor.getString(cursor.getColumnIndex("medicamentos_desig"));
i+=1;
}
int to[] = {R.id.listView1};
db.close();
final ListView listview = (ListView) findViewById(R.id.listView1);
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.medicamentos,cursor,list,to,0);
listview.setAdapter(adapter);
listview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {
Cursor listCursor = (Cursor) arg0.getItemAtPosition(arg2);
String id = listCursor.getString(listCursor.getColumnIndex("medicamentos_id"));
Intent passIntent = new Intent(arg1.getContext(),Editar.class);
passIntent.putExtra("id", id);
passIntent.putExtra("tipo", tipo);
passIntent.putExtra("accao", "update");
startActivity(passIntent);
}
});
错误日志:
05-29 18:33:32.653: E/AndroidRuntime(341): java.lang.ClassCastException: java.lang.String
05-29 18:33:32.653: E/AndroidRuntime(341): at admed.Listar$1.onItemClick(Listar.java:55)