Android :: Setting Values And Display Text In Android Spinner

May 31, 2010

I need help in setting up value and display text in spinner. As per now I am populating my spinner by array adapter e.g. mySpinner.setAdapter(myAdapter);

And as far as I know after doing this the display text and the value of spinner at same position is same. The other attribute that I can get from spinner is the position on the item. Now in my case I want to make spinner like the drop down box, which we have in .NET. Which holds a text and value. Where as text is displayed and value is at back end. So if I change drop down box , I can either use its selected text or value. But its not happening in android spinner case.

For Example:

Text Value
Cat 10
Mountain 5
Stone 9
Fish 14
River 13
Loin 17

So from above array I am only displaying non-living objects text, and what I want is that when user select them I get there value i.e. like when Mountain selected I get 5. I hope this example made my question a bit more clear.

Android :: Setting Values and Display Text in Android Spinner

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Android :: Call Spinner's Value - Use Other Values Based On A Spinner's Value

Jan 25, 2010

I have a spinner 'aperture' set up with a list of numbers, and a spinner 'mode' with two options. When a button is pushed I need a calculation to run using various inputs, including the current selection from 'aperture' and a value derived from 'mode'. How do I call the value of a spinner so I can use it in a calculation?

Also, how do I use the spinner 'mode's selection to set this other value before implimenting it in the calculation? To be more specific, if the spinner is set to Small then the value I use in the calculation is 0.015, whereas if Large is selected I need to use 0.028

My other inputs are EditText views, so right now I am set up like this:

CODE:............

That is not the actual equation, it is just a test to make sure everything connects properly. How would I call the value of spinner 'aperture' and the Small/Large spinner 'mode'

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Android :: Android - Avoiding Conflict Of Setting Text Field Values

Nov 17, 2010

I'm writing an Android application that allows a user to maintain a list of products. In the EnterProductData activity, the user can enter information about the product into form fields, which will then save the info to a SQLite DB. The EnterProductData activity also allows the user to initiate a barcode scan via the Barcode Scanner app in order to capture the UPC code. The problem I'm facing is trying to set the value of the UPC text field in onActivityResult() once the barcode scan activity is complete and returns the value.

What is ending up happening is my onResume() method is calling a function (populateFields()) that sets the values of the text fields to whatever is currently saved in the DB. And this seems to be happening after onActivityResult() is called. This means the scanned UPC is set as the text field value, only for an empty value to be set to it immediately after. The line of code to blame is commented with asterisks next to it. I imagine that if I immediately save the scanned UPC to the DB in the onActivityResult() method, I can avoid this problem, but that doesn't seem to be the best practice, in my opinion. Can someone advise me on what I should do?

EnterProductData.java
public class EnterProductData extends Activity {
private Button mScanButton;
private EditText mUPC;
private Button mSaveButton;
private Long mRowId;
private DbAdapter mDbHelper;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mDbHelper = new DbAdapter(this);
mDbHelper.open();
setContentView(R.layout.enter_product_data);
mUPC = (EditText) findViewById(R.id.UPC);
mScanButton = (Button) findViewById(R.id.scanButton);
mSaveButton = (Button) findViewById(R.id.saveButton);

mRowId = (savedInstanceState == null) ? null :
(Long) savedInstanceState.getSerializable(DbAdapter.KEY_PRODUCT_ROWID);
if (mRowId == null) {
Bundle extras = getIntent().getExtras();
mRowId = extras != null ? extras.getLong(DbAdapter.KEY_PRODUCT_ROWID): null;}
populateFields();
mScanButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
IntentIntegrator.initiateScan(EnterProductData.this);}});
mSaveButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
setResult(RESULT_OK);
finish();}});
}private void populateFields() {
if (mRowId != null) {
Cursor product = mDbHelper.fetchProduct(mRowId);
startManagingCursor(product);
mUPC.setText(product.getString(
product.getColumnIndexOrThrow(DbAdapter.KEY_UPC))); //******}
}@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
saveState();
outState.putSerializable(DbAdapter.KEY_PRODUCT_ROWID, mRowId);
}@Override
protected void onPause() {
super.onPause();
saveState();
}@Override
protected void onResume() {
super.onResume();
populateFields();
}private void saveState() {String upc= mUPC.getText().toString();
if (mRowId == null) {
long id = mDbHelper.createProduct(mRowId, UPC);
if (id > 0) mRowId = id;
}} else {mDbHelper.updateProduct(mRowId, UPC);
}}protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch(requestCode) {
case IntentIntegrator.REQUEST_CODE: {
if (resultCode != RESULT_CANCELED) {
IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if (scanResult != null) {
String upc = scanResult.getContents();
mUPC.setText(upc);
}}break;
}}}}