Spinner delete items
33,516
for delete all items use:
mySpinner.setAdapter(null);
if you want to delete a particular item, remove this from m_adapterForSpinner and then:
mySpinner.setAdapter(m_adapterForSpinner);
![Shruti](https://i.stack.imgur.com/BRP6Q.jpg?s=256&g=1)
Author by
Shruti
Updated on October 05, 2020Comments
-
Shruti over 3 years
I have developed an application in which i have one edit text value of edit text is entered in spinner on button clicked an the item i select to delete gets deleted but the problem is that when i delete the last item of spinner whole spinner list flushes . i want to delete only selected item(only last item)
My code is as follows :
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); /////////////////////////////////////////////////////////////// // grab our UI elements so we can manipulate them (in the case of the // Spinner) // or add listeners to them (in the case of the buttons) m_myDynamicSpinner = (Spinner) findViewById(R.id.dynamicSpinner); m_addItemText = (EditText) findViewById(R.id.newSpinnerItemText); Button addButton = (Button) findViewById(R.id.AddBtn); Button clearButton = (Button) findViewById(R.id.ClearBtn); // ////////////////////////////////////////////////////////////// // create an arrayAdapter an assign it to the spinner m_adapterForSpinner = new ArrayAdapter(this, android.R.layout.simple_spinner_item); ((ArrayAdapter) m_adapterForSpinner) .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); m_myDynamicSpinner.setAdapter(m_adapterForSpinner); // m_adapterForSpinner.add("dummy item"); // ////////////////////////////////////////////////////////////// // add listener for addButton addButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { addNewSpinnerItem(); } }); clearButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { clearSpinnerItems(); } }); } // ////////////////////////////////////////////////////////////// // add listener for addButton private void addNewSpinnerItem() { Log.v("TAG", "addNewSpinnerItems called"); if (m_addItemText.getText().length() == 0) {// ||(m_addItemText.getText().toString()== // " ")){ Log.v("In if cndtn", "textHolder is of length 0"); Toast.makeText(getApplicationContext(), "The textView is empty", Toast.LENGTH_LONG).show(); //m_myDynamicSpinner.clearFocus(); //m_myDynamicSpinner.setFocusable(false); //m_addItemText.setFocusable(true); } else { CharSequence textHolder = "" + m_addItemText.getText(); // else{ Log.v("else", textHolder + ""); // m_adapterForSpinner.add(textHolder); // } ((ArrayAdapter) m_adapterForSpinner).add(textHolder); } m_addItemText.setText(""); } private void clearSpinnerItems() { // m_adapterForSpinner.clear(); Log.v("TAG", "clearSpinnerItems called"); m_myDynamicSpinner .setOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { // TODO Auto-generated method stub Log.v("TAG", "Itemseleted to be removed is " + m_adapterForSpinner.getItem(pos).toString()); Log.v("Position of item", pos + ""); Object t = m_adapterForSpinner.getItem(pos); Log.v("Object t ", (String) t); ((ArrayAdapter) m_adapterForSpinner).remove((CharSequence) t); Log.v("Item removed", t + ""); // m_myDynamicSpinner.setSelected(false); } @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub } }); // m_adapterForSpinner.add("dummy item"); }
-
Zelter Ady almost 12 yearsIn my case, mySpinner.setAdapter(null); throws an exception!
-
SoliQuiD over 9 years@thenosic setting the adapter to null will remove the connection between the spinner and the adapter, in fact we're trying to only remove the adapter items