i tried to design a simple a sqlite related apps .but when i try to inflate my data in listview using view holder.it's getting error.i cannt understand how to debug it.my code is---
1- code for SQLiteOpenHelper
Code:
public class DataHelper extends SQLiteOpenHelper {
public static String DATABASE="kuldb";
public static String DB_TABLE="friends";[code].....
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Am I going wrong anywhere here ? because this is giving runtime error. application stopped unexpectedly.
I may b wrong in syntax.
CODE:..................
I have this query which does work fine in MySQL
CODE:............
Distance is in Kilometers, the input is lat=12.345 and lon=67.89
The SQLite is 3, and I can't run custom functions with it as it's on Android. I also don't have acos() etc... as that is not part of the standard SQLite.
How would be the above query in SQLite?
ViewHolder pattern improves ListView scrolling framerate, as seen in following example:
http://developer.android.com/intl/de/resources/samples/ApiDemos/src/com/example/android/apis/view/List14.html
Is it possible to keep this pattern while using different kind of Views for different rows?
In other words, is it possible to do something like:
public View getView(int position, View view, ViewGroup parent) {
// calculate viewID here
if (view == null || *view is not null but was created from different XML than viewID* ) {
view = mInflater.inflate(viewId, null);
I want to add a big feature to an application i am developping, but as this feature interest few people and is quite independant from the main part, I would like to put that in a seperate "plugin" application.Does anyone knows any design patterns, snippets, "reference" examples about such design?In particular that separate plugin application should be able to access some tables in the main application DB. Is it possible to do that without broadcast receiver? - the main application uses a TabActivity: is it possible that a the tabactivity instanciates an Intent Activity that is part of the plugin? - does the plugin can access main application preferences (not sure this would be necessary, but better to anticipate the question!) is it possible from the plugin to access main applications ressources?At least the 2 first points are mandatory for me.
View 4 Replies View RelatedHere is my ArrayAdapter. I would like to make this more efficient by following the ViewHolder pattern:
http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/List14.html
but am not sure how to accomplish this. code...
My application contains SQLite .My application some time getting the following error
CODE:.............
I am closing the db in Destroy() using DataClass.dh.db.close(); Why this Error occured.Give me the solutions for this.
This is my code used to create table code...
View 1 Replies View RelatedIn Android is it possible to insert a sqlite timestamp into a database using ContentValues?
When I try to add it using something like
ContentValues args = new ContentValues();
args.put(MY_DATE,my_date);
I get an error telling me that my_date needs to be a string
This error is driving me partially insane, it only surfaces on motorola droid / milestone devices, it works flawlessly on the hero and g1. Not got a droid to test it on so have to go on the crash reports in the android market. If you can shed any light onto this matter, I have gone through every db open and made sure it was closed.
View 1 Replies View RelatedI am trying to create an application based on Wi-Fi and i would need some suggestion on the same , The scenario am trying is,say, when a user with our android application enters a specific Wi-fi Hotspot, i need an activity to be invoked from my app. Basically I can have a service running as a part of my app and whenever i scan for that specific hot-spot i can call up the activity , BUT , i need to do the otherway round.. i mean instead of running a service in the mobile and utilizing its resource, i want the Wi-fi Hotspot to monitor and if the device is inside the vicinity it needs to invoke a notification from which the activity can be invoked... Few things that i would like to understand is I) When a wifi hot-spot is detected in our android phone what actually happens at the Wi-Fi Hot spot end ?? 2) When our device obtains an IP address from the wi-fi n/w will our device's unique ID or its equivalents be available at the wi-fi provider end ?
View 9 Replies View RelatedI am very new to Android Development. I am trying a sample application and it is generating a button dynamically using Java and it is working fine.
This works fine in my emulator. However when i try do with an XML based layout, my app crashes in the emulator.
Main.XML contents
<?xml version="1.0" encoding="utf-8"?>
<Button xmlns:android="com.testing"
android:id="@+id/button"
android:text=""
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
Code:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn=(Button)findViewById(R.id.button);
btn.setOnClickListener(this);
updateTime();}
Does anyone know why this simple application is crashing because of the XML layout?
I travel to different places to visit clients and spend few hours with each client any given day. Most of the time I am busy or forget to use a time tracker application to log my time in and time out. Are there any application out there that track time spent on a specific location. I use locale but it doesn't give me time spent at specific a location.
View 6 Replies View RelatedI was just reading through some posts and saw something that intrigued me. Is there a way to flash a Sprint based rom and use the NASCAR App that they exclusively have? Kind of like Verizon with the NFL?
View 12 Replies View RelatedWe going to develop commercial application that will run on Android platform and now I'm thinking about distribution model.
Application itself will be of no use to regular Android user and will be installed only by people who know why they need it. Application will authenticate with server prior to launch.
We as a company will charge application users monthly fee and will track usage, etc via our servers.
So, I was wondering if there "locked" portion of market for this kind of stuff? Or, do I release app as a free one and if random people download it - they just won't be able to use it?
What is the best way to do that? Can I install application by giving users our URL?
I'm trying to make it as easy as possible.
Currently I am writing an Android application which uses WikiTude API. I installed the WikiTude browser application in the Android SDK emulator from Android Market (To get Android Market in emulator I followed this link http://forum.xda-developers.com/archive/index.php/t-529170.html).
When I run the WikiTude browser application in emulator it asks me to set location settings. I enabled "Enable GPS satellites" option & run the application, again it make an alert for location settings. I am not able to run this application. Please help me.
Can anyone tell me is it possible to run GPS based application in Android Emulator? Or not?
If it is, Is there any work around to run GPS based application in emulator?
I have an android app I want to connect to a Google App Engine based server. I can get the auth token from the AccountManager. It seems the next thing I am supposed to do is talk to an auth page to get a cookie. Following the awesome instructions here: http://blog.notdot.net/2010/05/Authenticating-against-App-Engine-from-an-Android-app
I think my url should be:
https://MYAPP.appspot.com/_ah/login?continue=http://localhost/&auth=CrAZYl000ngToken
but rather than a redirect, I get a 500 server error:
Error: Server Error
The server encountered an error and could not complete your request. If the problem persists, please report your problem and mention this error message and the query that caused it. What's up with that? What is the URL I am supposed to be going to? Or maybe I'm doing something else wrong?
I use this query in my android database, but It return no data. Am I missing something?
CODE:................
I have created a SQLite database on my PC. I have imported it into my assets folder in the project directory. How do I access it from my Android application?
View 1 Replies View RelatedI am developing one application.In this i am using the sqlite database.In this first time I am taking the data from assets and then insert this data into database.and secondtime onwards i am taking data from Database.But first time also my application is very slow.Finally my application is too slow.My question is ,is generally application become slow when we use the sqlite in our app?and what we can do for this type of issue.Please give me some suggestions.Its very urgent.
View 2 Replies View RelatedI'm thinking of using WebView as a container for "Form" based JavaScript+DHTML applications. This is simple fill-out-forms like you have on the web, but now on mobile like for note taking, order taking, and the like.This is to allow web developers to build the bulk of the application - Javascript will perform validation, computations, etc.On the Java side, I only need to implement database CRUD operations, and a ListView to scroll over the forms.To minimize the learning curve on the JavaScript side, I've been thinking on how to emulate AJAX calls so that the web developers don't need to learn new methods to call on the JavaScript-Java bridge. Of course this isn't possible using XMLHttpRequest, so I'm thinking of adapting JQuery or other Javascript libraries for this purpose.
View 3 Replies View RelatedI have a Service which tracks the location of the user. Currently, the Service boots when the application starts and stops when the application terminates. Unfortunately, if users keep the application in the background, the Service never stops and drains battery.
I would like the Service to stop when my application is not in the foreground. I was hoping the Application class would let me Override onPause and onResume handlers, but it does not have them.
Android twitter Trying the following tutorial for Oauth based authentication and updating user status.
http://www.androidsdkforum.com/android-sdk-development/3-oauth-twitter.html
When i run It has successfully authenticate but when it tries to update the status following error occur.
CODE:...............
I'm searching information about how i can access a specific database that to not belong to me, and that is store in /data/data/com.... directory is it possible without root access? it it possible with root access, and how?
View 3 Replies View Related im try to make apps about information of a city. On the picture has many menu (you can see menu "info 1", "info 2", "info 3"....). in the plan, i will make thats app with Android SQLite, so for each info menu can display an information from sqlite database (read data from SQLite database). The questions are :
how thats app posible to make ?
What the name type or app model (similiar to picture) and what must be learn, so i can know how to build that app ?
I read some stuff about SQLite databases to use them within my own application. so for this point, it should work.
BUT:
for most of my data stuff i need a database that i can directly put into my application. i read on stackoverflow that it's possible to put up to 1,2mb files in the assets folder and then copy them anywhere else to use them.
my question is:
is it possible to acces those databases in the assets folder directly to read from them? there's no need to insert data into this database, it's just a data storage to read from? is it possible? and if it is than how could i do this?
I've implemented an onSaveInstanceState function in the main activity of my TabHost-based application. I need to save the state of various objects I am keeping in memory that I have all marked as serializable, as well as some basic int and string values. I have stepped through my application and watched it call the onSaveInstanceState function and presumably save everything without any manner of exception or problem. The issue is that my onCreate function is being called with a null Bundle value every time after I start the application again. I'm really at a loss and unsure why it would call the save but not pass anything into the create.
View 1 Replies View RelatedI want to create a sqlite database by importing data from some data files, like csv etc., and then put this database into one of my android application and then deploy into the Android device.
By now the samples and tutorial what I found are all taliking about creating the sqlite database at runtime when running the android application on the device. Is there anyway I can create it offline and then attach it to my application later?
Any tools and docs for this?
I need to statically link the 3.6.2 version of SQLite against my android application due to a bug that affects the dynamic library bundled with Android < 2.2. I've already compiled and installed 3.6.2 on my development machine, but I'm not sure how I go about linking it to my Android app (developing with Eclipse).
I'm not familiar with building and compiling options, so if someone could walk me through step-by-step.
I have a database that I have already populated locally. I want to bundle it with my applications and access it at runtime (never want to re-write it anywhere, nor write to the database, simply read). What is the path of a file that I have added to the bundle? And, can i use that path with a SQLiteDatabase.openDatabase ?
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