spinner

问题 I have the JSON format of countries and states, how can i add countries in one Spinner and get corresponding state in another spinner , my JSON format of counties and state is: [ { "Country": "Afghanistan", "State": [ "Badakhshan", "Badgis", "Baglan", "Balkh", "Bamiyan", "Farah", "Faryab", "Gawr", "Gazni", "Herat", "Hilmand", "Jawzjan", "Kabul", "Kapisa", "Khawst", "Kunar", "Lagman", "Lawghar", "Nangarhar", "Nimruz", "Nuristan", "Paktika", "Paktiya", "Parwan", "Qandahar", "Qunduz", "Samangan"

问题 When I use specific width like 400dp for the DropDown item's width and spinner width it matches properly. But When I am using match_parent for the spinner and custom_spinner_item width it does not match? Image may give an idea What is wrong with my code? I want the same width using match_parent ? This is my custom custom_spinner_item <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android

问题 I have an unwanted problem by default in spinner view. On Android 2.2 when I double click any spinner it opens twice, Upon pressing the back button the 2nd spinner closes but 1st one remains open. I need a fix for this issue. I only want the spinner to show once regardless of how many times the user clicks it. This problem doesn't exist in Android 4.0+. Is there a way to fix this bug? 回答1: You can use setEnabled(false) when user click on item first time to prevent further interaction, and

问题 I have two spinners, one above each other, like this: <Spinner android:layout_height="wrap_content" android:id="@+id/CitySpinner" android:layout_width="fill_parent" android:prompt="@string/city_prompt" /> <Spinner android:layout_height="wrap_content" android:id="@+id/CountrySpinner" android:layout_width="fill_parent" android:prompt="@string/country_prompt" /> I set them like this // set the data adapter for the city spinner spnCity = (Spinner) findViewById(R.id.CitySpinner);

问题 Spinner's "skeleton" shown behind another layout while scrolling up. When I scroll up Spinner's arrow and underline shown. I want it to hide it like it going to the behind of another layout. before scrolling after scrolling I have a two ConstraintLayout second one for ScrollView. Here is part of my XML. <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android

问题 I am trying to implement a simple spinner while my app seeks data from the Internet. My data grab is working fine, but it sometimes takes a while, so I'd like to use a UIActivityIndicatorView to let the user know that the app hasn't crashed. But it's currently not working. I've gleaned as much as I can from these forums, and others, but for some reason it's not working. Again, I feel like this solution is probably very simple. Here's what I'm doing: I declare the spinner as a property in the

问题 I want to get the spinner selected value and return it as string to store in sqlite database read the data when needed. I try the method as below, sp = (Spinner) findViewById(R.id.spnCategory); ArrayAdapter<CharSequence> ar = ArrayAdapter.createFromResource(this, R.array.category, android.R.layout.simple_list_item_1); ar.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line); sp.setAdapter(ar); String selection = sp.getSelectedItem().toString(); and get the string extras as

问题 I am trying to use a spinner in my application because there is lots of data that takes time to load. But here is the issue. I have taken this link as reference - Pre-Bootstrap Loading Screen For Angular2 But the spinner keeps on and on and has occupied a fixed place in table body , it doesn't disappear as the data loads completely. In the article above shown they have mentioned that using <app></app> or <my-app></my-app> (or probably <app-root></app-root> also) Angular will automatically

问题 I have a fragement with various Spinners in it. To have these spinners display an initial (non selectable) value I'm using a custom arrayAdapter (SpinnerHintAdapter). The only important thing this class does is override the getCount() so the last item of the selection-array isn't displayed, this is where the initial value is stored. This all works fine untill you rotate the device, then the spinners are set on the last normal value of the list for some reason, even though the Fragment class

问题 public class MainActivity extends AppCompatActivity { DatabaseReference reference; Spinner areaSpinner; ArrayList<String> areas = new ArrayList<>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); reference = FirebaseDatabase.getInstance().getReferenceFromUrl("https://vbspinner.firebaseio.com/Location"); areaSpinner = (Spinner) findViewById(R.id.spinner); DatabaseReference mref = reference.child("areas"