Android :: R Java File Not Updating With UI Element's Id
Mar 21, 2010
I added some UI elements to the main.xml file in the reslayout folder and when I try to access them through the call, R . layout. my _ uielement, the UI element that I created is not there. Even when I add a new xml file with UI elements, it still doesn't show up in the R.layout class. I have made checked the ids on them and they have the correct format (I think): android:id="@+id/my_button". What could be the problem? Do I need to compile the code first? UPDATE: I have already tried adb kill-server then adb start-server. It doesn't seem to help. I have also tried R.id.my_uielement, it doesn't register either.
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Mar 29, 2010
In the application I am working on now I came up with the following problem. I have list view which is displaying items with images in most cases it will be different image for different items (thumbnails about 60x60 pixels). So the problem is how can I handle image processing for the view. For know I have the following variants:
1. I can cache all bitmaps and when I try to display view I get bitmap from cache synchronously and display it. The problem is that 60x60=3600x4=14kb per bitmap which is waste of resources.
2. When I need to display view I can register event to some thread to decode the associated bitmap which will decode it in background and than to update gui. This sounds good for me the scrolling is still smooth because all image processing is done in background. Updating list view is bit jerky for now I am doing it view notifyDataSetChanged which is updating all visible views although I can update thumbnail for a single item.
So question one is is there better way the update single listview element than calling notifyDataSetChanged.
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Nov 20, 2010
I am getting a parsing error and I do not know why (I am new to programing). Because of this error, R.java disappears and I end up having more errors. Hopefully someone can help me out. Here is where the error comes from: list.xml. Code...
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Apr 30, 2010
Is there a way to lookup the line number that a given element is at in an xml file via the w3c dom api?
My use case for this is that we have 30,000+ maps in kml/xml format. I wrote a unit test that iterates over each file found on the hard drive (about 17GB worth) and tests that it is parseable by our application. When it fails I throw an exception that contains the element instance that was considered "invalid". In order for our mapping department (nobody here knows how to program) to easily track down the typo we would like to log the line number of the element that caused the exception.
Can anybody suggest a way to do this? Please note we are using the W3C dom api included in the Android 1.6 SDK.
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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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May 19, 2009
I want to add an animated GIF file as an UI element to the android UI application. Note that the GIF should be shown as animation but not static image in the UI.
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Jul 11, 2009
I updated the android framework ( java code), and I was able to compile the new java classes and test it. My issue is that i want to make some of the new java classes part of the android.jar, and i am unable to figure out the best way to add it to be build file.
For example: I want to include another class just like com.android,internal.util.Predicate.class is included in the android.jar. How and where do one indicate that the Predicate.class needs to be included in the android.jar?
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Apr 17, 2010
Is there anything the Dalvik VM supports (in terms of bytecode) which is not used currently because the .class files don't have it?
As an example, if people would write their own Source-to-DX converter for their functional language XYZ, would they be able to implement e. g. full tail calls although the .class file does support tail calls only under certain circumstances?
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Sep 18, 2010
I am getting following error while updating my twitter status from java code in android using Twitter4J .
CODE:................................
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Aug 16, 2010
I do an import of the full package name / java file, and if I do a <classname>.<method>, SOMETIMES I can get it to access - other times I get a lot of can't use a static in a non static bunch of talk. I'll admit I'm new to Java, so what do I need to do? Call a class instance first, then call my methods? I'm rather confused by this, as I want to put all of my 'functions' into a FunctionsList.java file, and all of my main Activity (UI) into a MyActivity.java file.
For example:
<MyActivity.java>
import com.example.FunctionsList;
private class MyActivity extends Activity {
FunctionsList.function();
}
9/10 times I get that static/non-static error. If I put all of my functions into MyActivity.java, I have zero problems!
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Oct 28, 2010
Is there any way to access the value (any constants) from Android.mk file to my java file.
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Nov 3, 2010
i hav two classes...both classes are extends activity.. i need call other class method on main class on android development..its urgent..please.. i done something like subclass sub = new subclass()...its not work..
In 1st activity class
package org.me.intent_testing;
import android.app.Activity; import android.os.Bundle; import android.widget.; import android.view.; import android.content.Intent;
/** * * @author pavankumar */
public class FirstActivity extends Activity {................
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Dec 19, 2009
When i started learning android i learned that R.java files goes to /gen folder recently i saw it on /src file (in WROX-Professional Android App Dev- sample code downloads). How does this work and also in some code i saw (xml layout) android:id="@+id/R.id.someName"(i don't remember in which web page i saw this code) I don't understand this, can somebody help me with this.
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May 3, 2012
I've been using Android for quite some time on my phone but im used to an update-process involving archive-files on CWM.
Now i just bought myself a new Tablet by Hyundai digital, the A7HD and the update is supplied in .img format.
to be precise:
RKS7S01_A7HD_20120420.img
and now im not entirely sure how to flash this, since all instructions come in chinese/korean and i am unable to understand them.
About the System itself:
Allwinner A10 CPU
with Android 4.0.3
Kernel version 3.0.8
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Jan 12, 2010
I have been having quite some problems with R.java file. Now I have decided to do a backup and delete the file to see what happens. Nothing happened, so I created an empty R.java file and hopped for the best. Now Eclipse seems to figure out that the file was tempered with and even issues a warning: R.java was modified manually! Reverting to generated version. And that's all there is. I tried building it manually but got no results. So, I have two questions: 1. what should I do to force Eclipse to generate the file. 2. what is happening here? How is the file created, where is the code that is generating the file? I would appreciate any help.
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Mar 3, 2009
I'm trying to write a java program that will install an apk file on android. I saw that there is an Intent action: ACTION_PACKAGE _ INSTALL, available and the developer reference says: "Broadcast Action: Trigger the download and eventual installation of a package" So I wrote a program like so:
Intent newintent = new Intent(Intent.ACTION_PACKAGE_INSTALL); File apkFile = new File("/data/data/HelloAndroid.apk"); newintent.setData(Uri.fromFile(apkFile)); sendBroadcast(newintent);
But this fails to do the intended task (which is download and install the application). I'm not able to figure what is happening to this broadcast intent, no logs get printed in LogCat. Any pointers on where to look or how to proceed?
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Nov 4, 2010
I plan to do our builds via Hudson and have android apk files available for download there. Is R.java in the /gen directory something that you check-in with you VCS? Or is it something that needs to be ignored and android sdk will generate every time if it doesn't exist?
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Jul 25, 2010
where I can find more information about how to parse a text file in Java and extracting a particular String or reg ex out of It.
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Aug 15, 2009
How can I install .apk file by using java code. that is , we can install .apk from cmd "adb install program_name.apk" I wonder that how can we install .apk file bu using another program. To summarize I will have button and when user click it another program(in sdcard) will be installed to phone.
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Feb 22, 2010
I have to parse a HTML file using java. I have gone through a lot of HTML parsers, but seem to understand none of them. So please help me out with the type of parser that should be used for an android app and how to parse a HTML file.
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Mar 18, 2009
I downloaded the android source code.. how to make our own jar file with all our available java classes in the Android source code....
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Aug 13, 2010
I need to decompile a .dex file back into java to edit it and recompile it back into .dex. I then need to put all the files back into the .apk format. How would I do this?
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Apr 12, 2010
May i please know how can i delete the content of the file in java?
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Sep 13, 2010
I've been messing with Android for a couple of weeks, i found many tutorials to follow, but i didnt find anywhere some "Style rules" to make the code looks better. I would like to know if its possible (im sure that it is, but dont know how to make it xD) to use more .java files to organize the functions. I mean, right now, i have myApp.java where i coded all my application, but is starting to grow so much, so i would like to separate some functions into another .java file. As i told before, im almost sure that this is possible, but i dont know how to link that second file so, can anybody help me?
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Nov 3, 2010
I am doing the Notepad tutorial, exercise 2. I started by creating a new Android project and chose Create from source to import the downloaded source files for the excercise. But now I get many errors in Eclipse, and the problem is that there is no generated R.java class. How can I solve this? The folder gen / is empty. I have errors on Notepadv2.java and in res/layout/note_edit.xml and both seems to be related to the fact that the generated R.java is missing. Here is my import statements in Notepadv2.java:
import android.R;
import android.app.ListActivity;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
They are created by the Eclipse command Ctrl+Shift+O.
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Nov 4, 2010
I know how to read a bitmap file into a byte array. How is the byte array then converted to a Java Bitmap?
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Jul 29, 2010
R.java has deleted automatically. How to get it back?
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Apr 20, 2010
I'm coming over from C# where I can make a namespace and then have each class placed into its own .cs file if I want, but in all of the examples I've seen for android all of the methods and classes are all in one big java file.
Is it possible to put my classes in to their own java files and then import those classes into a main program java file as needed like I do in C#?
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Nov 24, 2010
I'm currently developing an Android application, but I'd like to be able to handle button click events etc in a separate file for each Activity. Is this possible? At the moment, I have one very large file that handles all events for several Activity windows.
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Jan 4, 2014
I have a rooted Galaxy S3 (version 4.1.1) and im trying to update it, after the file is "downloaded" my phone reboots but there's the problem, the CMM based Recovery v5.5.0.4 screen appears. I clicked on the "install zip from sdcard" option but it fails to update and says Can't open /sdcard/update.zip (No such file or directory). This is what appears on screen...
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