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Conversion to Dalvik format failed with error 1


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UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.IllegalArgumentException: already added: Lcz/okhelp/MyMathClass;

First try this solution!!!!!
Select your project in project tree and go to the Eclipse menu Project » Clean » Clean projects selected below » select your project and click OK.

If you create *.apk package with proguard sometimes you must back up the project, delete project, and create new project if you are unable to create *.apk file.

Check your AndroidManifest.xml if all Activity is correctly inserted. If you add a library project to Main project you have to insert Activity from library to Main project AndroidManifest.xml


Problem with the library.
I deleted library project from project tree and again put the _library project into the main project. This problem was resolved.
1.)Go to Project » Properties » Java Build Path » Libraries and remove (your projects) click OK.
2.)Go to Project » Clean » Clean projects selected below » select your project and click OK.
3.)Add again your LIBRARY project to your MAIN project Project » Properties » Java Build Path » Libraries.
See image below.

Problem with a *.apk file
If you create signed *.apk, you have to delete previous *.apk from your PC folder.

jar-library-create-with-eclipse


397LW NO topic_id




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Random number Java | random-number-java


Generate random number Android Java example source code.

		Random rand = new Random();
		int i = rand.nextInt() % 256; // range -255  +255
		System.out.print(i + "

"); // -184 i = Math.abs(rand.nextInt() % 12); // range 0 +11 System.out.print(i); // 7



// Math.random() start with 0.  e.g. 0.35981234 
int nRan = (int) (Math.random()*10); // 0 - 10

// nextDouble(), nextFloat(), nextInt(), nextLong() returns 0 - 10
import java.util.Random;´

Random r = new Random();
int nRan = r.nextInt(); // 0 - 10
double dRan = r.nextDouble() * 10; // e.g. 7.496285271597397

nextDouble – return 0 - 1
nextFloat – same as double
nextInt –  -2147483648  +2147483647
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nextGaussian –  0.0 aberation 1.0.
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Full Screen No title Android | full-screen-no-title-android


Full Screen without titlebar and statusbar for Android Activity.
In Activity.java

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or in AndroidManifest.xml

<activity android:name=".ActivityName"
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301

sqlite database get path Android | sqlite-database-get-path-android



Context context = getApplicationContext();
String DB_PATH = "/data/data/"
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Titlebar title bar change text setTile Android example | titlebar-title-bar-change-text-android-example


Change the title associated with this activity. If this is a top-level activity, the title for its window will change. If it is an embedded activity, the parent can do whatever it wants with it.




 String sTitle = "My new title";
 setTitle(sTitle);



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Android button text alignment left right - sample | android-button-textalignment


android:gravity="left|center_vertical" or android:gravity="right|center_vertical"
               
<Button
                    android:layout_width="wrap_content"
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Editace: 2013-12-09 10:36:59
Počet článků v kategorii: 397
Url:conversion-to-dalvik-format-failed-with-error-1

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