Spinner doesn't look appropriate

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Answers

  1. Jaime

    • 2015/1/4

    THIS code is WORKING, the spinner correctly display the field, however i must say maybe it is not 100% perfect, cause for some reason im unable to leave blank the initial value of the field, it has by default the value of item 0. package com.cccheck;

    public class OneCheckActivity extends Activity {
    
    LayoutInflater factory;
    
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.spinner_view);
        ArrayList tdata = new ArrayList<MyData>();
        MyData mdata =new MyData();
        mdata.setName("");
        mdata.setData("-1");
        MyData ndata =new MyData();
        ndata.setName("ciao belluzzo");
        ndata.setData("1");
        tdata.add(mdata);
        tdata.add(ndata);
        mdata= new MyData();
        mdata.setName("vai alla fnac");
        mdata.setData("2");
        tdata.add(mdata);
        mSpinner = (Spinner) findViewById(R.id.my_spinner);
        factory = LayoutInflater.from(this);
    
        populateSpinner(tdata);
    
        setUpAdapter();
        mSpinner.setSelected(false);
        try  {
            mAdapter.notify();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    
        //mAdapter.registerDataSetObserver(new MyObserver());
    }
    ArrayList<MyData> mData;
    MyAdapter mAdapter = new MyAdapter(null);
    Spinner mSpinner;
    // This sets up the adapter and the arraylist that contains the data
    private void setUpAdapter() {
        mSpinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {
    
            @Override
            public void onItemSelected(AdapterView<?> parent,
                    View view, int pos, long id) {
                    MyData g = (MyData) parent.getItemAtPosition(pos);
                    // TODO
                    Toast.makeText(OneCheckActivity.this , "selected item : " + pos + ", value: " + g.getData(),Toast.LENGTH_LONG).show();
    
                }
            @Override
                public void onNothingSelected(AdapterView parent) {
                  // Do nothing.
                }
    
        });
    }
    
    
      // this populates the arraylist that is attached to the spinner's adapter
      //it is called once an AsyncTask finishes pulling data from a local database
    private void populateSpinner(ArrayList<MyData> result) {
        if (result != null) {
            if (mData == null) {
                mData = new ArrayList<MyData>();
            }
            else {
                mData.clear();
            }
    
            for (int index = 0; index < result.size(); index++) {
                mData.add(result.get(index));
            }
            mAdapter = new MyAdapter(mData);
    
            mSpinner.setAdapter(mAdapter);
        }
    }
    
    
    
    
    // this is the adapter for the spinner
    private class MyAdapter implements SpinnerAdapter {
    
        ArrayList<MyData> data;
    
        public MyAdapter(ArrayList<MyData> data){
            this.data = data;
        }
        public void updateData(ArrayList<MyData> data){
            this.data = data;
        }
    
        @Override
        public int getCount() {
            return data.size(); 
            }
    
        @Override
        public Object getItem(int position) {
            return data.get(position);
        }
    
        @Override
        public long getItemId(int position) {
            return position;
        }
    
        @Override
        public int getItemViewType(int position) {
            return android.R.layout.simple_spinner_dropdown_item;
        }
    
        @Override
        public LinearLayout getView(int position, View convertView, ViewGroup parent) {
            LinearLayout pv = (LinearLayout)(factory.inflate(R.layout.spinner_item, null));
            TextView tv = (TextView) pv.findViewById(R.id.textviewid);
            tv.setTextColor(Color.BLACK);
            MyData item = data.get(position);
            tv.setText( item.getName() + " - " + item.getData() + " ");
            tv.setPadding(0, 20, 0, 20);
            return pv;
        }
    
        @Override
        public int getViewTypeCount() {
            return 1;
        }
    
        @Override
        public boolean hasStableIds() {
            return false;
        }
    
        @Override
        public boolean isEmpty() {
            return data.isEmpty();
        }
    
        @Override
        public void registerDataSetObserver(DataSetObserver observer) {
            // TODO Auto-generated method stub
    
        }
    
        @Override
        public void unregisterDataSetObserver(DataSetObserver observer) {
            // TODO Auto-generated method stub
        }
    
        @Override
        public LinearLayout getDropDownView(int position, View convertView, ViewGroup parent) {
            if (convertView instanceof LinearLayout) System.out.println("%%%%%%%%%%%%%%55555 hai ragione");
            return this.getView(position, convertView, parent);
        }
    }
    
    
    
    
    }
    

    use this as layout for spinner_item.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    >
    
    <TextView 
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:textSize="28px"
    android:id="@+id/textviewid"
    />
    
    </LinearLayout>
    
  2. Rayden

    • 2016/11/22

    selected item doesnt show on the spinner android: 26, label.setText(listString.​get(position)); No need to be limited to arrays as many tutorials show. I have use list in my app. Therefore, I like to continue with list. Third and 

  3. Peter

    • 2016/4/24

    I have a OnItemSelectedListener for my Spinner, but it is not called when the selected item is the same as the previous one. Apparently the OnClickListener is not an option for a Spinner . I need to catch everytime a user click on an item.

  4. Maximilian

    • 2016/5/25

    In this tutorial, we will code an example Android app with a Spinner drop options of one spinners depends on the value selected in the other spinner. which means it exists in the layout but it will not be visible(or it will be hidden). To add items to the Spinner, there are two possible ways to provide it with a set of options.

  5. Braden

    • 2018/11/18

    Use Activity context instead of the Application context for your spinner. See documentation of getApplicationContext() api to understand its proper usage.

    Pass the activity context to MyAdapter and use it in creating the TextView's in getView callback.

    mAdapter = new MyAdapter(mData, this); // this is activity context.
    

    In MyAdapter :

    public MyAdapter(ArrayList<MyData> data, Context context){
         this.data = data;
         mContext = context;
    }
    
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
         TextView v = new TextView(mContext);
         v.setTextColor(Color.BLACK);
         v.setBackgroundColor(Color.WHITE);
         v.setText(data.get(position).getName());
         v.setPadding(0, 20, 0, 20);
         return v;
    }
    
  6. Ricardo

    • 2020/2/26

    Spinner item position means the string array position on spinner element because every string array starts with index zero( 0 ) then one( 1)…..(n). So by getting spinner item position we can perform various type of tasks upon it. So here is the complete step by step tutorial for How to get selected item position of spinner in android.

  7. Jayden

    • 2016/2/27

    android spinner example, android drop down list categories); // Drop down layout style - list view 

  8. De Angelis

    • 2015/10/2

    Spinner is like a drop-down list which can be used to display the multiple options to the user in which user can select only one option. In Android, Spinner is associated with AdapterView class (AdapterView is a ViewGroup that displays items loaded into an adapter).

  9. Jackson

    • 2016/8/1
    When I select an item from the Spinner and then print the selected item position, it prints -1
    

    This is because you are referencing BLANK list

    mData = new ArrayList<MyData>();
    mAdapter = new MyAdapter(mData);
    mSpinner.setAdapter(mAdapter);
    

    Set spinner adapter in onPostExecute() of AsynTask.

    @Override
    protected void onPreExecute() {
            mData = new ArrayList<MyData>();
            super.onPreExecute();
    }
    
    @Override
    protected Void doInBackground(String... params) {
            //gets "result" to fill mData
            return null;
    }
    
    @Override
    protected void onPostExecute(Void result) {
        setUpAdapter();
    }
    
    
    private void setUpAdapter() {
        if (result != null) {
              if (mData == null) {
                     mData = new ArrayList<MyData>();
               }
               else {
                     mData.clear();
               }
    
               for (int index = 0; index < result.size(); index++) {
                     mData.add(result.get(index));
               }
    
                mAdapter = new MyAdapter(mData);
                mSpinner.setAdapter(mAdapter);
                mSpinner.setSelected(0);
    
                mSpinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {
                    public void onItemSelected(AdapterView<?> parent,
                            View view, int pos, long id) {
                            MyData g = (MyData) parent.getItemAtPosition(pos);
                            // TODO
                        }
    
                        public void onNothingSelected(AdapterView parent) {
                          // Do nothing.
                        }
                });
            }
    
  10. Andre

    • 2018/6/6

    In this article, I'll describe two ways to achieve custom spinner for country selection that I had to implement at InCharge app. We officially 

  11. Salvatore

    • 2019/4/12

    Android Spinner (Dropdown List) with Examples In android, Spinner is a view that allows a user to select one value from the list of values. The spinner in android will behave same as a dropdown list in other programming languages.

  12. Curtis

    • 2021/1/8

    Posted: Mar 26, 2017

  13. Foster

    • 2016/1/28

    You can set static sizes using the xml attribute android:layout_height. Using dp unit instead of px is recommended for multiple screen compatibility.

    As for the text, try to use android:prompt attribute in your Spinner xml. For the color I'm guessing it's like other widgets, just use android:textColor

  14. Shane

    • 2021/5/7

    Spinners provide a quick way to select one value from a set. In the default state, a spinner shows its currently selected value. Touching the spinner displays a dropdown menu with all other available values, from which the user can select a new one. You can add a spinner to your layout with the Spinner object.

  15. Ruggiero

    • 2020/11/20

    Demo. [View in page]. Usage. import Loader from 'react-loader 

  16. Caden

    • 2015/11/9

    You will use Android studio to create an Android application and name it as AndroidSpinnerExample under a package com.example.spinner. 2 Modify src/AndroidSpinnerExampleActivity.java file to create a simple list view with items which are showing as spinner items

  17. Ibrahim

    • 2020/8/3

    to get Spinner selected item text in Android. activity_main.xml. <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 

  18. Silas

    • 2015/5/27

    When you say the items are not selectable, does that mean that you don't see the visual impression of the items being selected, or your listener method does not get triggered upon? About mangling the visual behavior of the spinner to hide the selected item being not shown on top, you need to extend Spinner.

  19. Jairo

    • 2020/7/6

    In this tutorial, we will code an example Android app with a Spinner drop down to GONE, which means it exists in the layout but it will not be visible(or it will be hidden). android:text="SPINNER DEMO" android:layout_alignParentLeft="true"​ 

  20. Nikolas

    • 2020/4/3

    Upload Files to Spin Text. In addition to copying and pasting the content, you can simply upload text files from the storage of your system to spin the text. This tool supports multiple formats of text files like .txt, .docx. .doc, and.pdf. You can upload a file with any of the mentioned formats to spin the text and then use it again. Final

  21. Raylan

    • 2021/10/30

    Basically, follow these steps: Create custom layout xml file for your dropdown item, let's say I will call it spinner_item.xml. Create custom view class, for your dropdown Adapter. Spinner sp = (Spinner)findViewById(R.

  22. Gonzales

    • 2021/8/14

    In the default state, a spinner shows its currently selected value. Touching the spinner displays a drop down menu with all other available values, from which the user can select a new one. Android spinner is associated with AdapterView. So we need to set the adapter class with the Spinner.

  23. Messiah

    • 2020/10/11

    In android, Spinner is a view that allows a user to select one value from the list of values. The spinner in android will behave same as a dropdown list in other 

  24. Perez

    • 2019/2/22

    To run the app from Android studio, open one of your project's activity files and click Run icon from the toolbar. Before starting your application,Android studio will display following window to select an option where you want to run your Android application. If you click on spinner button, It will a drop down menu as shown below

  25. Rafael

    • 2021/6/18

    Android Spinner Example, Android Drop Down List, android studio spinner, parent, View view, int position, long id) { // On selecting a spinner item String item​ 

  26. Caleb

    • 2018/6/21

    This example demonstrates how do I set the selected item of Spinner by value instead of by position on Android. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main.xml.

  27. Leon

    • 2020/10/20

    Android Spinner is a view similar to the dropdown list which is used to select one option from the list of options. It provides an easy way to select 

  28. Casey

    • 2020/1/30

    Spinner item position means the string array position on spinner element because every string array starts with index zero( 0 ) then one( 1)…..(n). So by getting spinner item position we can perform various type of tasks upon it. So here is the complete step by step tutorial for How to get selected item position of spinner in android.

  29. Samir

    • 2019/11/11

    In this article, I'll describe two ways to achieve custom spinner for country Implement Android dropdown just the way you want. setItemForCountry(view, country) } return view override fun getDropDownView(position: Int, 

  30. Pellegrini

    • 2017/6/14

    This Video will teach you How to set first value (default value) in spinner as empty. Means, until the user selects value from list, spinner will have no val

  31. Amias

    • 2021/7/20

    Android spinner is associated with AdapterView. So you need to use one of the adapter classes with spinner. Android Spinner class is the subclass of 

  32. Axl

    • 2018/12/31

    In this post, we are going to see about Android Spinner Dropdown example. Android Spinner is a UI widget which have dropdown. Once you click on dropdown , you can select one option among various options. I am going to put static data in android spinner and select one of value from them. Source code: Download Github Source code Step 1 :Creating Project Create an android application project

  33. Kamryn

    • 2017/11/21

    In this tutorial, we will code an example Android app with a Spinner drop down options of one spinners depends on the value selected in the other spinner. which means it exists in the layout but it will not be visible(or it will be hidden).

  34. Solomon

    • 2021/5/3

    This Video will teach you How to set first value (default value) in spinner as empty. Means, until the user selects value from list, spinner will have no val

  35. Heath

    • 2015/4/13

    Spiral Spinner. Compatible browsers: Chrome, Edge, Firefox, Opera, Safari. Responsive: no. Dependencies: -. Demo image: Pure CSS Loader 

  36. Wilson

    • 2017/4/25

    Browse other questions tagged android user-interface drop-down-menu spinner or ask your own question. The Overflow Blog Podcast 300: Welcome to 2021 with Joel Spolsky

  37. Mark

    • 2019/12/6

    you are passing this in the following piece of code, ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.

  38. Tommy

    • 2017/2/1

    Spinner is an Android User Interface (UI) control which lets a user select an option from the drop-down list.. Also Read: Android RadioButton Control In the above screenshot of Gmail application, you can easily see a drop-down menu with three options, which are Reply, Reply All, and Forward.

  39. Rene

    • 2018/1/11

    Android Spinner Example, Android Drop Down List, android studio spinner, android drop down menu, spinner in android, android custom Selecting an item from spinner would display a toast message. Quick easy and simple, isn't it?

  40. Tatum

    • 2015/4/21

    is it possible have a spinner that loads with nothing selected Only if there is no data. If you have 1+ items in the SpinnerAdapter, the Spinner will always have a selection. Spinners are not designed to be command widgets.

  41. Forest

    • 2016/6/1

    Best way to do it is: Preview: enter image description here. XML: <Spinner android:id="@+id/spinner1" android:layout_width="match_parent" 

  42. Bianco

    • 2020/4/19

    In Android, Spinner provides a quick way to select one value from a set of values. Android spinners are nothing but the drop down-list seen in other programming languages. In a default state, a spinner shows its currently selected value. It provides a easy way to select a value from a list of values.

  43. Reid

    • 2020/7/12

    Spinner. Enhance a text input for entering numeric values, with up/down buttons and arrow key handling. Examples. Default functionality · Currency · Decimal 

  44. Hughes

    • 2016/2/4

    Here AlgorithmAdapter class object is made and it acts as an adapter for the spinner and add onItemSelectedListner () to our spinner. When the user tap on any item of the spinner, it gets invoked. It shows a toast with the name of the item that user selected from the list.

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