导航抽屉刷新/重新加载
作者:互联网
我设法使Nav-Drawer和Fragments正常工作.我面临的问题是,我希望用户向Nav-Drawer中添加新的列表项,而我正在使用Dialog来做到这一点:
public void createAlert() {
//ALERT
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("Neue Liste erstellen");
//alert.setMessage("Message");
// Set an EditText view to get user input
final EditText input = new EditText(this);
alert.setView(input);
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
String value = input.getText().toString();
// Do something with value!
dbHelper.createNewListItem(value, null);
}
});
}
我的导航抽屉如下所示:
// Erstellt den neuen MenuAdapter aus der Klasse MenuListAdapter
MenuListAdapter mMenuAdapter = new MenuListAdapter(this, drawerTitles, drawerSubtitles, drawerIcons);
View footer = (View)getLayoutInflater().inflate(R.layout.drawer_list_header, null);
mDrawerList.addFooterView(footer);
mDrawerList.setAdapter(mMenuAdapter);
关闭对话框后,如何刷新列表视图(导航抽屉).我找不到任何有效的解决方案.未定义notifyDataSetChanged,并且这些都不起作用:
mDrawerList.refreshDrawableState();
mDrawerList.invalidate();
有人知道解决方案吗?
更新:
这是我的重装方法:
for(int i = 0; i < cursor.getCount(); i++){
String listname = cursor.getString(cursor.getColumnIndex("listname"));
String listsubtitle = cursor.getString(cursor.getColumnIndex("subtitle"));
allListNames[i] = listname;
allListSubtitle[i] = listsubtitle;
cursor.moveToNext();
}
drawerTitles = allListNames;
drawerSubtitles = allListSubtitle;
mMenuAdapter = new MenuListAdapter(this, drawerTitles, drawerSubtitles, drawerIcons);
mDrawerList.setAdapter(mMenuAdapter);
mMenuAdapter.notifyDataSetChanged();
解决方法:
重写onPrepareOptionsMenu方法并在其中设置适配器.之后,在列表视图上调用invalidateViews().
标签:listview,navigation-drawer,android 来源: https://codeday.me/bug/20191122/2060562.html