我在Linearlayout中有一个ListView.
listview有一个自定义的cursoradapter.
一切正常,但ListView不滚动.
任何建议超过欢迎!!谢谢.毛里齐奥
这是MainActivity的XML
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
android:id="@+id/buttonAdd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="Aggiungi" />
android:id="@+id/list"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
这是java代码的相关部分.
public class MainActivity extends Activity {
private DatabaseHelper db=null;
private Cursor tabellaCursor=null;
private ListAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
int[] to = new int[] {R.id.name_entry};
db = new DatabaseHelper(this);
tabellaCursor=db.getWritableDatabase().rawQuery("SELECT _id, colonna1, colo nna2, colonna3 FROM tabella ORDER BY _id", null);
ListAdapter adapter=new MyAdapter(this, R.layout.list_example_entry, tabe llaCursor, new String[]{"colonna1"},to);
ListView lt = (ListView)findViewById(R.id.list);
lt.setAdapter(adapter);
Button addbtn=(Button)findViewById(R.id.buttonAdd);
addbtn.setOnClickListener(new OnClickListener()
{public void onClick(View v){add(); }
});
}
解决方法:
ListViews布局参数是“wrap_content”.当您向litview添加新项目时,它将展开.因此它不会滚动.如果你把它设置为“match_parent”它肯定会开始滚动.并且不要忘记一个视图只在其内容(孩子们查看了什么)时滚动
尺寸比它大.
标签:android,scroll,listview
来源: https://codeday.me/bug/20190713/1450504.html