Android :: Encapsulating Functions In Second Java File?

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?

Android :: Encapsulating functions in second java file?


Android :: Java.lang.VerifyError When Use Functions Of One Package From Another

Mar 4, 2010

i have two diff applications in two diff packages. i am trying to use the functions of one package from another which crashes my application. this shows me with java.lang.VerifyError in the adb logcat. there is no problem while compiling my app. but its not able to run.

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Android :: Java Timers - Functions Called Not Completing

Mar 13, 2010

I have a TimerTask task calling a function onTimerComplete() in its run()

onTimerComplete() looks something like this:

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

I make a Timer t and I schedule the TimerTask with t.schedule(task, 2000);

The problem is, when the timer is up and the task runs my onTimerComplete() but that function does not finish. It runs myFunc1() but never finishes it nor does it ever call myFunc2()

However, if I call onTimerComplete() directly, everything works.

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Android :: Call Java File On Click In Another Java Class?

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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Android :: Does The Dalvik File Format - .dx - Support More Instructions Than Java .class File

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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Android :: Android - Loading External JS File Into Webview And Functions Access

Oct 19, 2010

I have a JS file that has functions to search a document for substrings. I want to access functions inside this file by passing parameters to it (the search keyword). I know we can use .loadUrl("javascript:~~~~~) but I'm not clear on how to do it using multiple functions.

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Android :: Android / Java - Call Function In Separate *.java File?

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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Android :: Access Value From Mak File To Java File?

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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Android :: Call Java Class Methods To Other Java Class File On Android

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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Android :: R Java File In Src / Gen?

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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Android :: Magic Behind R Java File

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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Android :: Installing Apk File In Java

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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Android :: To Checkin R Java File In To VCS?

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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Android :: Parse A Text File Using Java

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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Android :: Install Apk File - Using Java Code

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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Android :: HTML File Parsing With JAVA

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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Android :: Make Own Jar File With Java Classes?

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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Android :: Converting Dex File To Java Back

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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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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Android :: Delete Only Content Of File In Java?

Apr 12, 2010

May i please know how can i delete the content of the file in java?

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Android :: No Generated R Java File In Project

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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Android :: Read File Into Java Bitmap?

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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Android :: R.java File Deleted Automatically

Jul 29, 2010

R.java has deleted automatically. How to get it back?

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Android :: Possible To Put Each Class Into It's Own Java File In Eclispe?

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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Android : Possible To Have A Separate Java File For Each Activity?

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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Android :: Java.lang.ExceptionInInitializerError While Reading Yml File

Jun 16, 2009

I am getting java.lang.ExceptionInInitializerError while reading yml file.The code that i am using for reading yml file is InputStream inputdatfile=Myclass.this.getResources().openRawResource (R.raw.datafile); Map<String, List<Map>> data = (Map<String, List<Map>>)Yaml.load (inputdatfile); I am getting the error in the second line.My yml file is in res aw folder. the external jar file i am using here to read yml file is jyaml1.3.jar. i tried to add <uses-library android:name="org.ho.yml" / > in manifest file that time i am not able to install the app in

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Android :: Java.lang.IllegalArgumentException While Parsing Xml File

Jan 28, 2010

i have several gpx files on my sd card and i show them (the filename) on a listview. if i choose a gpx file, the track is load in another activity with a listview,too (adress-strings are shown). if i use the back button, the listview with the filenames is shown again and i can choose another file. but if i repeat this the third time, i get this error:.................

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Android :: Error - Unable To Fnd Class R.java No Such File Or Dir

Oct 18, 2010

I keep getting this when trying to start a new project

ERROR: Unable to open class file C:UsersLeviDesktopAndroidworkspaceDroid1gencomandroidbookdroid1R.java: No such file or directory

I tried changing preferences to alter build path to project, but it still wouldnt work,,,

Is subfolder on desktop a bad place to install Eclipse?

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Android :: Force Idea To Generate R.java File?

Apr 12, 2010

I am trying to run android sample applications using intellij idea and R.java file is missing form notepad samples source directory.

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Android :: Read A Segment Of File In Java / Droid?

Aug 27, 2010

I'm sure this might be a simple question, but unfortunately this is my first time using Java and working the Android SDK.

I am uploading files on Android using the Apache HTTP libraries, in particular using the MultipartEntity.

I'm uploading to a service that allows me to send them chunks of the file, and once complete, they'll reassemble the chunks. I'd like to take advantage of this feature.

Here's the scenario.

File FOO.BAR is 20 MB. I'd split it into some arbitrary chunk size, let's say 1 MB, which means 20 chunks. Chunks #3 and #14 fail (maybe the cellular/WiFi connection was bad). I can now re-upload just these two chunks and everything will be good.

What I'd like to know is how can I read only part of a file (like the data between 3MB and 4MB)?

The file piece should be an InputStream or File object.

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