希望在同时具有onClick侦听器和onLongClickListener的警报对话框中具有列表视图
希望在同时具有onClick侦听器和onLongClickListener的警报对话框中具有列表视图
提问于 2016-07-05 20:03:12
为了创建一个带有列表视图的报警对话框，我使用了以下代码：
ArrayList<String> namesAL = dbHandler.getArrayListOFnames();
final ListAdapter m_Adapter = new ArrayAdapter<String>(fragment_console.this,android.R.layout.simple_expandable_list_item_1, namesAL);
builderSingle.setAdapter(
m_Adapter,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
destloc = getLocLatLng(which);
destlat = destloc.latitude;
destlng = destloc.longitude;
gotoLocation(destlat, destlng, 14);
if (marker != null) {
marker.remove();
}
if (circle != null){
circle.remove();
circle = null;
}
MarkerOptions options = new MarkerOptions()
.title("Your destination")
.position(destloc)
.position(destloc)
.icon(BitmapDescriptorFactory.fromResource(R.drawable.dest_marker));
marker = map.addMarker(options);
onDestinationChanged();
dialog.cancel(); }
});
builderSingle.show();但这限制了我只能使用OnClickListener，没有长点击监听器的选项。我也需要一个长点击监听器，以便用户可以从我提供的列表中删除一个条目(这实际上是由用户创建的)。如何做到这一点？
回答 4
Stack Overflow用户
回答已采纳
发布于 2016-07-05 20:20:27
// TODO Auto-generated method stub
AlertDialog.Builder alertBuilder = new AlertDialog.Builder(
ListAlertDailog.this);
alertBuilder.setIcon(R.drawable.ic_launcher);
alertBuilder.setTitle("Select Mobile OS:-");
final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(
ListAlertDailog.this,
android.R.layout.select_dialog_item);
arrayAdapter.add("Android");
arrayAdapter.add("IOS");
arrayAdapter.add("Windows");
arrayAdapter.add("Bada");
arrayAdapter.add("BlackBerry OS");
arrayAdapter.add("Symbian OS");
alertBuilder.setNegativeButton("Cancle",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
dialog.dismiss();
}
});
alertBuilder.setAdapter(arrayAdapter,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
String strOS = arrayAdapter.getItem(which);
Toast.makeText(getApplicationContext(),
"On click selected " + strOS, Toast.LENGTH_SHORT)
.show();
dialog.dismiss();
}
});
final AlertDialog alertDialog = alertBuilder.create();
alertDialog.setOnShowListener(new OnShowListener() {
@Override
public void onShow(DialogInterface dialog) {
// TODO Auto-generated method stub
ListView listView = alertDialog.getListView();
listView.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(
AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
String strOS = arrayAdapter.getItem(position);
Toast.makeText(getApplicationContext(),
"Long Press - Deleted Entry " + strOS,
Toast.LENGTH_SHORT).show();
alertDialog.dismiss();
return true;
}
});
}
});
alertDialog.show();Stack Overflow用户
发布于 2016-07-05 20:14:49
在构建对话框之后，在显示它之前，您可以执行以下操作：
alertDialog.getListView().setOnLongClickListener(...);https://developer.android.com/reference/android/app/AlertDialog.html#getListView()(https://developer.android.com/reference/android/app/AlertDialog.html#getListView(%29)
编辑:添加更多代码以澄清操作
以下是添加侦听器的代码。为了从列表中获得正确的对象，您应该将对象本身作为标记添加到视图中。
//[your code from above here...]
AlertDialog alertDialog = builderSingle.create();
alertDialog.getListView().setOnLongClickListener(new OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
//your removeing code here
YourObject yObj = (YourObject) v.getTag();
yourList.renmove(yObj);
return true;
}
});
alertDialog.show();Stack Overflow用户
发布于 2016-07-05 20:18:26
你需要用ListView制作你自己的DialogFragment，但最好是用RecyclerView。
示例：
public class MyDialogFragment extends DialogFragment {
private RecyclerView mRecyclerView;
private MyRecyclerAdapter adapter;
// this method create view for your Dialog
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
//inflate layout with recycler view
View v = inflater.inflate(R.layout.fragment_dialog, container, false);
mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
//setadapter
CustomAdapter adapter = new MyRecyclerAdapter(context, customList);
mRecyclerView.setAdapter(adapter);
//get your recycler view and populate it.
return v;
}
}在这里您可以找到如何创建RecyclerView适配器http://www.androidhive.info/2016/01/android-working-with-recycler-view/
您可以像这样显示此片段：
MyDialogFragment dialogFragment = new MyDialogFragment();
dialogFragment.show(getFragmentManager(), "dialogFragment");页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/38202987
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