Develop Reference

How to add customize Spinner?

I am working on a project where I have to implement a spinner. My spinner code is below:
ArrayAdapter stringArrayAdapter = new ArrayAdapter(this,
android.R.layout.simple_spinner_dropdown_item, CatagoryName);
// create a spinner
Spinner spinner = (Spinner) findViewById(R.id.spinner);
// add adapter to spinner
spinner.setAdapter(stringArrayAdapter);
// create listener and add to spinner
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// put code which recognize a selected element
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
Basically, I want to use my custom spinner layout at
ArrayAdapter stringArrayAdapter = new ArrayAdapter(this,
android.R.layout.simple_spinner_dropdown_item, CatagoryName);
R.layout.simple_spinner_dropdown is not what I want. How to replace this layout with mine?

this is worked for me,
firstly define spinner items in strings.xml which in values directory as above,
<string-array name="spinner_array">
<item>item1</item>
<item>item2</item>
<item>item3</item>
</string-array>
then try above code,
Spinner customSpinner = (Spinner)findViewById(R.id.spinner);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(getApplicationContext(), R.array.spinner_array, R.layout.custom_spinner_dropdown);
customSpinner.setAdapter(adapter);

Try this approach:
Spinner spinner = (Spinner) findViewById(R.id.spinner);
String[] CatagoryName = {"A","B","C","D"};
ArrayAdapter<CharSequence> langAdapter = new ArrayAdapter<CharSequence>(getActivity(), R.layout.your_layout, CatagoryName);
langAdapter.setDropDownViewResource(R.layout.simple_spinner_dropdown);
spinner.setAdapter(langAdapter);

Change content of spinner dynamically to another spinner's item

i have too spinners , spinner and spinner2, first one has a standard menu, the second must change relative to items from spinner.
am trying to get the position of item selected in spinner and then put it as a parametre into my method item2sp to change spinner's 2 items.
but i doesn't change, i keep getting only the first item menu in spinner2, how can i fix it help me please.
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
Spinner spinner2;
List<String> categories;
List<String> ndp;
List<String> ps;
ArrayAdapter<String> dataAdapter;
ArrayAdapter<String> ndpAdapter;
ArrayAdapter<String> psAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Spinner element
Spinner spinner = (Spinner) findViewById(R.id.spinner1);
Spinner spinner2 = (Spinner) findViewById(R.id.spinner2);
// Spinner click listener
spinner.setOnItemSelectedListener(this);
spinner2.setOnItemSelectedListener(this);
// Spinner Drop down elements
categories = new ArrayList<String>();
categories.add("NDP");
categories.add("PS");
categories.add("PA");
categories.add("PC");
categories.add("PH");
ps = new ArrayList<String>();
ps.add("AA");
ps.add("BB");
ps.add("CC");
ndp = new ArrayList<String>();
ndp.add("RP");
ndp.add("AFF");
ndp.add("RPA");
// Creating adapter for spinner
dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, categories);
psAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, ps);
ndpAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, ndp);
// Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
psAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
ndpAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spinner.setAdapter(dataAdapter);
}
public void itemsp2 (int position){
switch (position){
case 0:
spinner2.setAdapter(ndpAdapter);
Toast.makeText(getBaseContext(), ""+position, Toast.LENGTH_LONG).show();
break;
case 1:
spinner2.setAdapter(psAdapter);
Toast.makeText(getBaseContext(), ""+position, Toast.LENGTH_LONG).show();
break;
}
}
// int position = spinner.getSelectedItemPosition();
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// On selecting a spinner item
String item = parent.getItemAtPosition(position).toString();
itemsp2(position);
// Showing selected spinner item
// Toast.makeText(parent.getContext(), "Selected: " + item, Toast.LENGTH_LONG).show();
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
}

iller is my First List and I set this list my firs spinner then I implements onItemSelected method for this spinner. In this method you can add your second spinner with difrent List.
Spinner spinner = (Spinner) findViewById(R.id.spinner);
spinner.setOnItemSelectedListener(this);
List<String> iller = new ArrayList<String>();
iller.add("İl Seçiniz..");
iller.add("Antalya");
iller.add("Burdur");
iller.add("Bursa");
iller.add("Balıkesir");
iller.add("Giresun");
iller.add("İstanbul");
ArrayAdapter<String> illerAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, iller);
illerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(illerAdapter);
spinner2 = (Spinner) findViewById(R.id.spinner2);
spinner2.setVisibility(View.INVISIBLE);
editText = (EditText) findViewById(R.id.editText);
editText.setVisibility(View.INVISIBLE);
}
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
int itemId = (int) id;
if (itemId == 1) {
iller.remove("İl Seçiniz..");
antalyaİlceler = new ArrayList<String>();
antalyaİlceler.add("İlçe Seçiniz..");
antalyaİlceler.add("Konyaaltı");
antalyaİlceler.add("Muratpaşa");
antalyaİlceler.add("Alanya");
antalyaİlceler.add("Manavgat");
ArrayAdapter<String> antalyaİlcelerAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, antalyaİlceler);
antalyaİlcelerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(antalyaİlcelerAdapter);
spinner2.setVisibility(View.VISIBLE);
editText.setVisibility(View.VISIBLE);
} else if (itemId == 2) {
burdurİlceler = new ArrayList<String>();
burdurİlceler.add("İlçe Seçiniz..");
burdurİlceler.add("Bucak");
burdurİlceler.add("Tefenni");
burdurİlceler.add("Gölhisar");
burdurİlceler.add("Ağlasun");
ArrayAdapter<String> burdurİlcelerAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, burdurİlceler);
burdurİlcelerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(burdurİlcelerAdapter);
spinner2.setVisibility(View.VISIBLE);
editText.setVisibility(View.VISIBLE);
}

Inserting into ArrayAdapter does not update Spinner selection

I am trying to insert an item into an Adapter that multiple Spinners are using. However when I insert into the adapter, I would like the Spinners to retain their original selection based off the object and not the position.
In the case below, the Spinner is originally selecting "four", but when I click the button to insert "three", the spinner is now set to "three" instead of updating to the new position of "four". How can I achieve this?
public class MyActivity extends Activity {
List list;
ArrayAdapter<String> adapter;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Spinner spinner = (Spinner) findViewById(R.id.spinner1);
list = new ArrayList<>();
list.add("one");
list.add("two");
list.add("four");
adapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_dropdown_item, list);
spinner.setAdapter(adapter);
// set selection to "four"
spinner.setSelection(2);
findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//list.add(2, "three") causes the same problem
adapter.insert("three", 2);
adapter.notifyDataSetChanged();
}
});
}

Should you call spinner.setAdapter(adapter); or a similar method after inserting a new value into the adaptor?

spinner.setSelection(list.indexOf("four"));
This will set the selection to "four" no matter on what position it is.

How to use onclicklistener

I am trying to use an onclick listener on radio buttons to update a spinner I have. The default numbers in the spinner will be 15, 25, 35, and 45. When you select the KG radio button I want it to change to 8, 15, and 20. I have the following:
public class PlateCalc_Tab extends Activity
{
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.platecalc_tab);
RadioButton weightSettingLB = (RadioButton)findViewById(R.id.weightSettingLB);
RadioButton weightSettingKG = (RadioButton)findViewById(R.id.weightSettingKG);
weightSettingLB.setChecked(true);
weightSettingLB.setOnClickListener(updateToLB);
weightSettingKG.setOnClickListener(updateToKG);
List<String> weightOfBarArray = new ArrayList<String>();
weightOfBarArray.add("15");
weightOfBarArray.add("25");
weightOfBarArray.add("35");
weightOfBarArray.add("45");
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, weightOfBarArray);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinner weightOfBarSpinner = (Spinner) findViewById(R.id.weightOfBarSpinner);
weightOfBarSpinner.setAdapter(adapter);
}
View.OnClickListener updateToKG = new View.OnClickListener()
{
public void onClick(View view)
{
}
};
This code currently works. When I enter the following code into my onclick listener I get an error.
View.OnClickListener updateToKG = new View.OnClickListener()
{
public void onClick(View view)
{
List<String> weightOfBarArray = new ArrayList<String>();
weightOfBarArray.add("8");
weightOfBarArray.add("15");
weightOfBarArray.add("20");
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, weightOfBarArray);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinner weightOfBarSpinner = (Spinner) findViewById(R.id.weightOfBarSpinner);
weightOfBarSpinner.setAdapter(adapter);
}
};
I get "Cannot Resolve Constructor" # this line:
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, weightOfBarArray);

Replace the array adapter initialization like below.
ArrayAdapter<String> adapter = new ArrayAdapter<String>(PlateCalc_Tab.this, android.R.layout.simple_spinner_item, weightOfBarArray);

use
ArrayAdapter adapter = new ArrayAdapter(v.getContext(), android.R.layout.simple_spinner_item, weightOfBarArray);

Creating a Dynamic view with spinner Dependable in Android

I have an issue of loading view dynamically. I have three dynamic spinner view when i select first item from the spinner it should create a text view above second spinner but its creating a view below third spinner. Can any one guide me how to achieve it.I have shared my code below.
/add LayoutParams
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
rl.setOrientation(LinearLayout.VERTICAL);
// add spinner
String[] spinnerArray = {"Android","ios","other"};
Spinner spinner = new Spinner(this);
ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, spinnerArray); //selected item will look like a spinner set from XML
spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(spinnerArrayAdapter);
String[] spinnerArray1 = {"flowers","vegetables","other"};
Spinner spinner1 = new Spinner(this);
ArrayAdapter<String> spinnerArrayAdapter1 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, spinnerArray1); //selected item will look like a spinner set from XML
spinnerArrayAdapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(spinnerArrayAdapter1);
String[] spinnerArray2 = {"cat","dog","other"};
Spinner spinner2 = new Spinner(this);
ArrayAdapter<String> spinnerArrayAdapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, spinnerArray2); //selected item will look like a spinner set from XML
spinnerArrayAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(spinnerArrayAdapter2);
rl.addView(spinner);
rl.addView(spinner1);
rl.addView(spinner2);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
{
if(position==1)
{
TextView tv = new TextView(MainActivity.this);
tv.setText("Hello");
rl.addView(tv);
}
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});

Do you know how LinearLayout works?
http://developer.android.com/reference/android/widget/LinearLayout.html
You should call
addView(tv, 1);
Specifying position on where to insert view.