How can I pick only once a value from spinner in android

How can I pick only once a value from spinner in android - android

I have a spinner with ten numbers 0-10 and I if someone picks a number I want him not to be able to pick the same value again. So inside ItemSelected I do the following with no result
#Override
public void onItemSelected(AdapterView<?> adapter, View v, int position, long id) {
// On selecting a spinner item
if (position > 0 && position!=tempPosition)
{
TeamSpinnerNumber = adapter.getItemAtPosition(position).toString();
tempPosition = position
}
}

Check this i worked out for you may it help you.
public class MainActivity extends AppCompatActivity {
ArrayList<String> mStrings;
ArrayAdapter<String> mStringArrayAdapter;
Spinner mSpinner;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSpinner = (Spinner) findViewById(R.id.spinner);
mStrings = new ArrayList<String>() {{
add("None");
add("one");
add("two");
add("three");
}};
mStringArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mStrings);
mSpinner.setAdapter(mStringArrayAdapter);
mSpinner.setSelection(0);
mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String string = parent.getItemAtPosition(position).toString();
if (!string.equals("None"))
removeThisFromSpinner(string);
mSpinner.setSelection(0);
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
private void removeThisFromSpinner(String s) {
mStrings.remove(s);
mStringArrayAdapter.notifyDataSetChanged();
}
}

try this, hope it helps :
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Log.i(TAG, "onItemSelected: "+position);
//checking the position of the selected spinner item, if the previous position is not the same then do something here
if(position>0 && position!=myPosition){
}
myPosition = position;
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
and don't forget to add global variable to the class :
int myPosition = 999; // the non existed position make it global variable

Related

how to change imageview view based on spinner selection in android studio?

I am trying to display image in image view, based on spinner selection. If anyone know how to solve this please help.
public class activity_tables extends AppCompatActivity {
Spinner s1;
String[] tbls;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tables);
s1 = (Spinner)findViewById(R.id.spinner);
tbls = getResources().getStringArray(R.array.tables);
final ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_spinner_item,tbls);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
s1.setAdapter(adapter);
}
}

Set onItemSelectedListener for your spinner like this
s1.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
// your code here
if(position==0)
{
qImageView.setImageResource(R.drawable.whatever);}
else if(position ==1)
{
qImageView.setImageResource(R.drawable.whatever);}
}
}
#Override
public void onNothingSelected(AdapterView<?> parentView) {
// your code here
}
});

how to get spinner value position on button click [duplicate]

I'm trying to get the position (number) of the spinner when selected to use it in another Activity that will display a different map each time depending on the item selected. when I run the application it crashes. this is the first Activity code:
public class TestProjectActivity extends Activity {
public Spinner spinner1;
public Integer number;
private Button valideButton;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MySpinner();
valide_button();
}
public void MySpinner() {
final Spinner spinner1 = (Spinner) findViewById(R.id.spinner1);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.num, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(adapter);
spinner1.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parentView,
View selectedItemView, int position, long id) {
// Object item = parentView.getItemAtPosition(position);
TestProjectActivity.this.number = spinner1
.getSelectedItemPosition() + 1;
}
public void onNothingSelected(AdapterView<?> arg0) {// do nothing
}
});
}
public void valide_button() {
valideButton = (Button) findViewById(R.id.valide_button);
valideButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(TestProjectActivity.this,
MetroMapActivity.class);
startActivity(intent);
}
});
}
}

The way to get the selection of the spinner is:
spinner1.getSelectedItemPosition();
Documentation reference:
http://developer.android.com/reference/android/widget/AdapterView.html#getSelectedItemPosition()
However, in your code, the one place you are referencing it is within your setOnItemSelectedListener(). It is not necessary to poll the spinner, because the onItemSelected method gets passed the position as the "position" variable.
So you could change that line to:
TestProjectActivity.this.number = position + 1;
If that does not fix the problem, please post the error message generated when your app crashes.

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bt = findViewById(R.id.button);
spinner = findViewById(R.id.sp_item);
setInfo();
spinnerAdapter = new SpinnerAdapter(this, arrayList);
spinner.setAdapter(spinnerAdapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
//first, we have to retrieve the item position as a string
// then, we can change string value into integer
String item_position = String.valueOf(position);
int positonInt = Integer.valueOf(item_position);
Toast.makeText(MainActivity.this, "value is "+ positonInt, Toast.LENGTH_SHORT).show();
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
note: the position of items is counted from 0.

final int[] positions=new int[2];
Spinner sp=findViewByID(R.id.spinner);
sp.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
Toast.makeText( arg2....);
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});

if (position ==0) {
if (rYes.isChecked()) {
Toast.makeText(SportActivity.this, "yes ur answer is right", Toast.LENGTH_LONG).show();
} else if (rNo.isChecked()) {
Toast.makeText(SportActivity.this, "no.ur answer is wrong", Toast.LENGTH_LONG).show();
}
}
This code is supposed to select both check boxes.
Is there a problem with it?

Application crash when try to set text selected from spinner to textview

I want to set text from selected item from spinner to textview, But when i tried to do application craches. Can any one help me .
public class MainActivity extends AppCompatActivity {
TextView txt;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txt=(TextView) findViewById(R.id.txt1) ;
ArrayList<ItemData> list=new ArrayList<>();
list.add(new ItemData("Cash",R.drawable.paymentcashnew));
list.add(new ItemData("Paytm",R.drawable.paymentpaytmnew));
Spinner sp=(Spinner)findViewById(R.id.select_cash);
String result = sp.getSelectedItem().toString();
txt.setText(result);
SpinnerAdapter adapter=new SpinnerAdapter(this,
R.layout.spinner,R.id.txt,list);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
sp.setAdapter(adapter);
}
}

sp.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
String result = sp.getSelectedItem().toString();
txt.setText(result);
}
});
This may help Frnd.

spinner has no "getSelectedItem". https://developer.android.com/reference/android/widget/Spinner.html https://developer.android.com/guide/topics/ui/controls/spinner.html
and here's how you get the text-value of the selected row: https://stackoverflow.com/a/15545909/3022387
spin.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
String imc_met=spin.getSelectedItem().toString();
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});

Implement spinner.setOnItemClickListener and then find text inside that method like this.
spinner.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
String result = sp.getSelectedItem().toString();
txt.setText(result);
}
});

You can't get selected Item before setting adapter.Try this below code
public class MainActivity extends AppCompatActivity {
final TextView txt;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txt=(TextView) findViewById(R.id.txt1) ;
ArrayList<ItemData> list=new ArrayList<>();
list.add(new ItemData("Cash",R.drawable.paymentcashnew));
list.add(new ItemData("Paytm",R.drawable.paymentpaytmnew));
Spinner sp=(Spinner)findViewById(R.id.select_cash);
SpinnerAdapter adapter=new SpinnerAdapter(this,
R.layout.spinner,R.id.txt,list);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
sp.setAdapter(adapter);
sp.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Object item = parent.getItemAtPosition(position);
String result = sp.getSelectedItem().toString();
txt.setText(result);
}
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
}

Update Spinner from another spinner dynamically

I have a fragment that creates controls at runtime, first create a spinner and then the second, the detail is in the second spinner depends on having the first selection.
As I can update the data of the second spinner depending on the selection of the first?
final Spinner Combo2 = new Spinner(FichaRutasVerif2SeccionSlideFragment.this.getActivity());
final Spinner Combo1 = new Spinner(FichaRutasVerif2SeccionSlideFragment.this.getActivity());
List<String> list = new ArrayList<String>();
list.add("TERRESTRE");
list.add("FLUVIAL");
list.add("AEREO");
final ArrayAdapter<String> adapterCombo = new ArrayAdapter<String>(FichaRutasVerif2SeccionSlideFragment.this.getActivity()
,android.R.layout.simple_spinner_item,list);
List<String> list2 = new ArrayList<String>();
list2.add("OP1");
list2.add("OP2");
final ArrayAdapter<String> adapterCombo2 = new ArrayAdapter<String>(FichaRutasVerif2SeccionSlideFragment.this.getActivity()
,android.R.layout.simple_spinner_item, list2);
if(listFormato.get(posicion).cSeccion.trim().equals("M"))
{
adapterCombo.setDropDownViewResource(R.layout.spinner);
Combo1.setAdapter(adapterCombo);
Combo1.setSelection(listFormato.get(posicion).iIndexCombo);
llTempZZ.addView(Combo1);
Combo1.setGravity(Gravity.CENTER);
llTempXX.addView(llTempZZ);
llTEMPADRE.addView(llTempXX);
pllh.addView(llTEMPADRE);
}
else if(listFormato.get(posicion).cSeccion.trim().equals("U")){
final Spinner Combo0 = new Spinner(FichaRutasVerif2SeccionSlideFragment.this.getActivity());
List<String> list3 =new ArrayList<String>();
list3.add("SI");
list3.add("NO");
ArrayAdapter<String> adapterCombo3 = new ArrayAdapter<String>(FichaRutasVerif2SeccionSlideFragment.this.getActivity()
,android.R.layout.simple_spinner_item, list3);
adapterCombo3.setDropDownViewResource(R.layout.spinner);
Combo0.setAdapter(adapterCombo3);
llTempZZ.addView(Combo0);
llTempXX.addView(llTempZZ);
//llTempXX.addView(llTempAA);
llTEMPADRE.addView(llTempXX);
pllh.addView(llTEMPADRE);
Combo0.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> adapterView,
View view, int pos, long id) {
if (pos == 0) {
pll2.setVisibility(View.VISIBLE);
}
else if(pos==1) {
pll2.setVisibility(View.GONE);
}
listFormato.get(posicion).vResultado = Combo0.getSelectedItem().toString();
RECORDCARDITEM_DAO.Actualizar(FichaRutasVerif2SeccionSlideFragment.this.getActivity(), listFormato.get(posicion));
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
else if(listFormato.get(posicion).cSeccion.trim().equals("T"))
{
adapterCombo2.setDropDownViewResource(R.layout.spinner);
Combo2.setAdapter(adapterCombo2);
//Combo1.setSelection(listFormato.get(posicion).iIndexCombo);
llTempZZ.addView(Combo2);
Combo2.setGravity(Gravity.CENTER);
llTempXX.addView(llTempZZ);
llTEMPADRE.addView(llTempXX);
//////TEXTOS
Combo2.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> adapterView,
View view, int pos, long id) {
if(Combo2.getSelectedItemPosition()==0)
{
}
if (pos ==12) {
llTempAA.setVisibility(View.VISIBLE);
} else {
llTempAA.setVisibility(View.GONE);
}
listFormato.get(posicion).vResultado = Combo2.getSelectedItem().toString();
RECORDCARDITEM_DAO.Actualizar(FichaRutasVerif2SeccionSlideFragment.this.getActivity(), listFormato.get(posicion));
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}

You can do something like this
Spinner firstSpinner = (Spinner) findViewById(R.id.first_spinner);
// You can set your first spinner values here if not set already, and then
firstSpinner.setOnItemSelectedListener(onFirstSpinnerChange(firstSpinner));
And the further add this
AdapterView.OnItemSelectedListener onFirstSpinnerChange(Spinner mySpinner) {
return new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
// You can add this method to set the values of the second spinner in your activity
// You can use the position, or alternatively selectedItemView for this purpose to identify the selected item
setSecondSpinnerBasedOnFirstOnePositionSelected();
// Or you can just set your spinner in this block
}
#Override
public void onNothingSelected(AdapterView<?> parentView) {
// do nothing
}
};
}

Get the position of a spinner in Android

I'm trying to get the position (number) of the spinner when selected to use it in another Activity that will display a different map each time depending on the item selected. when I run the application it crashes. this is the first Activity code:
public class TestProjectActivity extends Activity {
public Spinner spinner1;
public Integer number;
private Button valideButton;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MySpinner();
valide_button();
}
public void MySpinner() {
final Spinner spinner1 = (Spinner) findViewById(R.id.spinner1);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.num, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(adapter);
spinner1.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parentView,
View selectedItemView, int position, long id) {
// Object item = parentView.getItemAtPosition(position);
TestProjectActivity.this.number = spinner1
.getSelectedItemPosition() + 1;
}
public void onNothingSelected(AdapterView<?> arg0) {// do nothing
}
});
}
public void valide_button() {
valideButton = (Button) findViewById(R.id.valide_button);
valideButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(TestProjectActivity.this,
MetroMapActivity.class);
startActivity(intent);
}
});
}
}

The way to get the selection of the spinner is:
spinner1.getSelectedItemPosition();
Documentation reference:
http://developer.android.com/reference/android/widget/AdapterView.html#getSelectedItemPosition()
However, in your code, the one place you are referencing it is within your setOnItemSelectedListener(). It is not necessary to poll the spinner, because the onItemSelected method gets passed the position as the "position" variable.
So you could change that line to:
TestProjectActivity.this.number = position + 1;
If that does not fix the problem, please post the error message generated when your app crashes.

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bt = findViewById(R.id.button);
spinner = findViewById(R.id.sp_item);
setInfo();
spinnerAdapter = new SpinnerAdapter(this, arrayList);
spinner.setAdapter(spinnerAdapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
//first, we have to retrieve the item position as a string
// then, we can change string value into integer
String item_position = String.valueOf(position);
int positonInt = Integer.valueOf(item_position);
Toast.makeText(MainActivity.this, "value is "+ positonInt, Toast.LENGTH_SHORT).show();
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
note: the position of items is counted from 0.

final int[] positions=new int[2];
Spinner sp=findViewByID(R.id.spinner);
sp.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
Toast.makeText( arg2....);
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});

if (position ==0) {
if (rYes.isChecked()) {
Toast.makeText(SportActivity.this, "yes ur answer is right", Toast.LENGTH_LONG).show();
} else if (rNo.isChecked()) {
Toast.makeText(SportActivity.this, "no.ur answer is wrong", Toast.LENGTH_LONG).show();
}
}
This code is supposed to select both check boxes.
Is there a problem with it?

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

How can I pick only once a value from spinner in android - android

Related

how to change imageview view based on spinner selection in android studio?

how to get spinner value position on button click [duplicate]

Application crash when try to set text selected from spinner to textview

Update Spinner from another spinner dynamically

Get the position of a spinner in Android

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