Dynamic Spinner With Database

Oct 11, 2013

I am trying to have a layout with 4 spinners that dynamically change with each previous selection in a spinner.Whenever I try and open my app, the app crashes and will never open.

Here is a copy of my LogCat.10-10 14:39:41.652: E/AndroidRuntime(1917): FATAL EXCEPTION: main
10-10 14:39:41.652: E/AndroidRuntime(1917): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.productguide/com.example.productguide.PowersportsEquivalent}: java.lang.NullPointerException
[code]....

Dynamic Spinner with Database


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Sep 14, 2010

I need to create an ArrayAdapter and a Spinner that are totally dynamic and have nothing to do with the layout file.

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Mar 11, 2012

I'm trying to make a simple order system. So the user selects a burger type from a spinner, then the user can enter in the quantity and then there is some math taking place in the background which sets a text view at the bottom with the total price. I'm not sure what method I'm meant to use so that it is updated dynamically when the user changes the text view quantity.

If i just say that all burgers are 2.50, i need some sort of method saying, if/when data is entered into the edit text , take that data and then times it by 2.50 and set it in the total text view below. I'm just unsure on the method part of it so it's dynamic and will change when the edit text quantity is altered.

Code:
package placeorder.com;
import java.util.Random;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
[code]...

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Nov 2, 2009

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But the class is activity now and my other class for database is inherent from listactivity. furthermore, I already know the length of database title.

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

Now create a simple cursor adapter and set it to display.

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

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Feb 3, 2010

I'm attempting to make a dynamic drop down that will be filled by a SQLite table. I have a Cursor object which I can pull the data I need from. I've been able to accomplish loading the values into the drop down with the code below:

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

My problem is that I need the a selection from the drop down to also contain the RowID of the item selected. I need to be able to select one item and have access to the value of that item in the back end. For example, think of a drop down in HTML. Each drop down selection has it's own hidden value that is pulled. I need this value to be hidden for me to allow me to know which ID they choose.

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Jun 18, 2009

I created a database with records in it and everything. I am trying to use its fields and put it in a spinner. The database contains university names.

I created a spinner with:

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

where I am feeding the spinner the records from an array. I want to do it from the database that I created. I read thru the classes and there are 2 ways but I can't find a proper code to use any of them. I just want to insert the code to get records from the database. It shouldn't be complicated is it?

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Aug 3, 2010

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

Where would i declare my {KEY_ARRIVAL} as i already have my KEY_ARRIVAL declared in my DBAdapter.java. But there is an error stating KEY_ARRIVAL cannot be resolved?

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Jan 30, 2013

I have to develop one android native application.Here i have to fetch the value from mysql database and display on android edittext and spinner box.

I have to run the app means the value is fetching from database and displayed on android edittext.but not display on spinner box.How can i display the value on android spinner box fetching from mysql database.I have used the below webservice code:

Quote:

public class DisplayProfile {
public String customerData(String Username,String Bcountry){

String customerInfo = "";[code].....

Why am getting the above error?how can i resolve the above error ???? how can i display the fetching data on spinner box list on first item...

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Insert Spinner Selected Value In Mysql Database Via Soap Webservices In Android

Aug 23, 2012

i have to develop the app is insert the database from spinner in mysql database via soap webserices in android application...

i have use below webservice code:

Code:
package com.xcart;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

[Code]...

this is my android source code for spinner:

Code:

public class InsertionExample extends Activity{
private final String NAMESPACE = "[URL]...";
private final String URL =

[Code]....

my logcat window says following error:

Quote:

08-23 02:48:40.030: D/AndroidRuntime(4055): Shutting down VM
08-23 02:48:40.030: W/dalvikvm(4055): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
08-23 02:48:40.060: E/AndroidRuntime(4055): FATAL EXCEPTION: main

[Code]...

what error is occurred here.give me solution...

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Android :: Spinner Widgets Look Different On Different Devices - Can Define Own Spinner That Looks Same On All Handsets

May 20, 2010

I use this code to generate a spinner in my app:
code:.........

On my device (Motorola Milestone) and in the emulator this looks like the standard gray spinner widget.
On of my colleagues uses a Motorola Backflip and on his device the Spinner is black. Now its very hard to read the font in the spinner.

What do I have to do to use my own view for the spinner? I don't mind to have the gray spinner on all devices, but it should always look the same on all devices.

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Android :: Display Array Of Strings In Spinner With Spinner.setAdapter

Jun 9, 2010

I have an xml layout file which contains a few widgets including a Spinner
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I tried doing:

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

But this crashes my application.

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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

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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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This is a bad and buggy arrangement. Instead, I would like to have a function that just takes a selection listener and some other parameters and shows a popup list that's populated by the same cursor (or and identical cursor) as the spinner, without using the spinner itself.

Is there any way I can do this?

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I am trying to populate a spinner depending on another spinner's selected item, my code is the following:

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

what is intriguing me is that the first spinner onitemselection works perfectly ( I can see the values in LogCat) then when I change selection of the 2nd spinner I am gettging an error on this line: String selected= (String) s2.getSelectedItem(); So the compiler gets insisde then onItemSelected function of the 2nd spinner but throws an Handler exceltion on s2.getSelectedItem()

why? it works perfectly for the 1st spinner.

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In my application i am dynamically creating a table layout. In each row of the table layout have 3 text views. but the auto wrap of the text is not working on these text views in multiple screen resolutions.

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Aug 7, 2009

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I want to create a TextView that will stretch the width of the screen and use a textsize that will keep the text on one line and fill the width. So bigger words would be smaller fontsize and smaller words would be bigger font size. I tried digging around in the docs under TextView but could not find what I needed.

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Android :: ArrayAdapter Of Dynamic Size

Oct 19, 2010

I need a gallery to be able to hold up to thirty custom views. These views need to added or removed whenever, they also need to be able to be display in a display bow beneath the gallery. How do I do this?I looked at the doc file for arrayadapter but it requires me to use a reference Id for each view I add, but each view is all java coded. Should I just use setId upon creation of the view and just throw that id into the array adapter, or is there a way to create one without using resource id's?

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