Android : Trying To Get Contents Of Database In Java
Jun 7, 2010
I am using 8 EditText boxes from the NewCard.xml from which i am taking the values and when the save button is pressed i am storing the values into a database, in the same process of saving i am trying to get the values and present them into 8 different TextView boxes on the main.xml file and when i press the button i get an FC from the emulator and the resulting error is java.lang.NullPointerException.
If Some 1 could help me that would be great, since i have never used databases and this is my first application for android and this is the only thing keepeng me to complete the whole thing and publish it on the market like a free app. Here's the full code from NewCard.java. Code...
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Dec 20, 2009
How can I view the contents of my databases on the actual phone? I have followed the docs, using the adb and sqlite commands, but while these work fine on an emulator when I'm connected to the device I get a permissions error.
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Aug 19, 2010
I am dynamically adding ImageViews to a RelativeLayout depending on user input. I have also created a button that when pressed, should clear all of the content of that RelativeLayout (remove all children). I was hoping for a .clear() method, but no such luck.
can someone point me in the right direction here?
RelativeLayout rel = (RelativeLayout) findViewById(R.id.iv_section);
rel.SomethingToRemoveAllChildren();
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Jul 8, 2010
I'm doing Major Project on my final year and I'm very new to Android plus I;m not good at codings. I need help with my login page.
I've created something like a database connection java file which is this:
CODE:.......
I've already created a database for users using SQLite. The database name is Users and the table is called User. The records inside the table are Username, Password, LastName, FirstName. I've inserted one user's info into the database. The problem is I do not know whether my UserDB.java is correct.
And I've also created login.java. Hardcoded Login page:
CODE:.........
So I want to know how I should apply the database connection on the login.java. Should I insert database connection something like db.Open();? I studied ASP.Net a few months back and I kind of forget most of what I've learnt. So how should I open the database connection on login.java and how to check with database whether the user enters the right username and password?
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Aug 18, 2010
I have an minor issue when taking a photo. I have a button that invokes the camera, successfully takes a photo, and returns to my entry form. My only problem is the database leak that occurs when pressing the button to call the camera.
My code looks a little something like this.
code:..........
I run :
code:..........
In the onCreate of the Activity or Class that I am calling the camera in. I have not coded in mDbHelper.close(); anywhere not sure if i should when or where. I think i would rather just leave it open while capturing one image.
Logcat:
code:............
Everything seems to be working fine, but i would defiantly like to avoid any issues amongst the many android devices out there.
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Nov 8, 2010
ive been looking for a week now i need some help connecting to a remote database...i want my app to get data out of the database and update the database.ive tried this http://www.helloandroid.com/tutorials/connecting-mysql-database but i dont understand it.
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May 19, 2010
i have two files
App.java
Gallery.java
App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java
App.java
package gallery.display;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........
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Mar 16, 2009
I'm trying to call a java method from javascript using addJavascriptInterface(); but seems does not work, it always display "failure"; java code...
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Aug 23, 2010
I'm trying to deploy an application with an existing SQLite database.I've been reading though the examples that are posted but they are always missing some part of the class. I feel like I'm trying to bake muffins but no one told me to use baking powder.Can someone post a full database helper class for depoying an SQLite database on Android? Edit : Delete old code because it doesn't work.
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Apr 12, 2010
I'm currently developing a Field-Service application that stores data in the local sqlite database on an android device. At some point, usually after completing the data collection rounds, the local sqlite db is to be synchronized to a remote sybase db on the server.Any suggestions as to how this could be achieved or engineered as a solution? Or even better, are there alternatives to synchronizing data in such an application?
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Aug 8, 2009
Java packages like Java.io, Java.Lang etc used in android, are they different from Java packages in windows ? means specially made for android ?
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Jul 1, 2010
Some inputs on "the contents of the following files...
/system/usr/srec/config/en.us/baseline.par /system/usr/srec/config/en.us/baseline11k.par /system/usr/srec/config/en.us/baseline8k.par "
And also what is the purpose of this files?
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Feb 11, 2009
I'm having some problems porting a Java application to work in Android platform. I detected an incompatibility problem between java sun and Adroid sdk in java.lang.Class. I oberved that: public Field[] getFields() Returns an array containing Field objects describing all fields which are defined. That's array is sorted as attributes are declared in the main Class in sun jdk. For example, next Class is defined as: public class Example { public boolean stop; public int atr1; public String name; ....
}
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Jul 24, 2009
I have an EditText where I get input from user, but then I show the contents of my EditText in a TextView using the .toString() it returns so it show me the classname@integervalue not the text which user inputs, please guide me how to get my contents, do I have to override .toString() method?
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Nov 17, 2010
our engineer test video and audio player using streaming aac mono contents and 128x98 video content.aac and mp4 decoder can't decoding content. and return error.android not support low level contents?
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Oct 22, 2010
How can I see the contents of SD card of my phone on the DDMS, when I connect to the computer? I want to pull the pictures out of my phone.
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Aug 26, 2010
I want to save an ArrayList so that it is persistent. The contents can change. What is the best way of approaching this in android?
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Jul 13, 2010
Security is top priority for me, i realise there are apps out there that can remote wipe lock etc, but if the thief is quick enough to take out the sdcard and put it in another phone the sdcards contents can still be accessed can't it?
So i would like to know if there is anyway to encrypt or protect the sdcard and the contents within it?
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Dec 15, 2009
Is it possible to change the contents of the resources packaged with an apk and get it to work? I tried unzipping the apks contents, performing the changes I wanted, rezipping, and then using the zipalign tool on my modified apk but when I try to install I get the error 'MyPackage.apk' does not contain AndroidManifest.xml when I try to install. Is there a way around this?
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Jul 20, 2010
How to delete sd card contents?
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Apr 16, 2010
I want to display pdf contents on webview.
Here is my code:
CODE:....................
I am getting a blank screen. I have set internet permission also.
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Jul 19, 2010
I've tried some Biblie applications and I'd like to add a translation that we commonly use here in Brazil. I have the content in my computer and i could easily make any format for the application to read with some script. Is that possible? Do I have to make my own application?
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Jan 16, 2010
I'm new to android and I'm trying to figure out how to get the contents of a URL as a String. For example if my URL is http://www.google.com/ I want to get the HTML for the page as a String. Could anyone help me with this?
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Mar 4, 2010
On Android, I have a WebView that is displaying a page. How do I get the page source without requesting the page again?
It seems WebView should have some kind of .getPageSource() method that returns a string, but alas it does not.
If I enable javascript, what is the appropriate javascript to put in this call to get the contents? code...
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Apr 30, 2009
I need to somehow get a drawable of the contents of a Layout, once I get that "drawable" I want to set it as a background on an empty layout. How can I go about doing this?
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Feb 8, 2010
I currently have a ListView being filled by a custom Adapter with content it gets from a JSON string on a web page. The ListView's row layout is a LinearLayout that has two things in it, one AdMob layout and one TextView. The AdMob layout's visibility is by default set to Gone.What I want to do make every 5th row's AdMob layout visible. The current way I am doing this is by Overriding getView in my custom adapter (something I already had programmer to get my rows to have alternating colours), within this I keep track of the position variable and see if I have moved down 5 rows yet. When I have I find the AdView object and set it to visible. This works fine for a while but for some reason as I scroll down more on my list the ads become every other instead of every five. This doesn't make any sense to me because I have set up logcat to tell me when it reaches my "make ad visible code" and according to that I should not be having double ads. Has this happened to anyone else before? I'm not quite sure how to handle this situation.
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Mar 24, 2010
I've got a horizontal Linear Layout that contains a variable number of child Linear Layouts. Right now, the children will just run off the screen if there are too many of them. How would I make the parent layout wrap the children on multiple lines? If this is not possible, should I be using a different layout as the parent?
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Nov 2, 2010
I have created a app that displays all the content from res/raw folder. I need that when I click on .doc file it should open and I can view its content. I have ThinkFree.
Enter code here:
public class FileList extends ListActivity {
public static final Field[] fields = R.raw.class.getFields();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setListAdapter(new ArrayAdapter<Field>(this, R.layout.row, R.id.weekofday, fields));
} @Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
//super.onListItemClick(l, v, position, id);
String selection = l.getItemAtPosition(position).toString();
Toast.makeText(this, selection, Toast.LENGTH_SHORT).show();
Intent i = new Intent();
i.setAction(android.content.Intent.ACTION_VIEW);
startActivity(i);
} }
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Aug 11, 2010
In my application, on click of a button, I start an intent to send email. I have set the "To" list, "Subject" and attachment in my coding. Now my problem is that when the email screen is shown, user should not be able modify the email contents nor should he be allowed to remove the attachment. Only he should be able to click on "Send" button.
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Nov 8, 2010
I have a folder with 16 shortcuts in it I would like to reorder with in the folder.
Say, change it from:
1 2 3 4
5 6 7 8
9 0 a b
c d e f
to:
a b c d
e f 0 9
8 7 6 5
4 3 2 1
I've done a lot of searching and reading, but can't seem to find anything on this, except to delete the folder and then recreate it in the order I want, this is quite difficult for something that I should be able to just drag around in the folder.
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