解决Conversion to Dalvik format failed: Unable to execute dex: null

解决Conversion to Dalvik format failed: Unable to execute dex: null

由于最近在做移植，要用到一些库，但出现Conversion to Dalvik format failed: Unable to execute dex: null这个问题，build工程目录时常出现内存不足，然后eclipse就挂掉，在eclipse.ini提高内存，eclipse又运行不了，搜索到这个

终于问题解决了。

要增大eclipse的内存，必须修改eclipse.ini文件，但是把内存提高会出现创建JVM错误，要修正这个问题，只需在eclipse.ini文件前面加上两行（第二行为你自己的具体路径）：

vm
C:\Program Files\Java\jdk1.6.0_21\bin\javaw.exe

And here are some tips from websites abroad:

As Android developer, I have met a strange problem when I want use a third party jar, it remained me that:
Dex Loader] Unable to execute dex: null
Conversion to Dalvik format failed: Unable to execute dex: null
out of memory error…An internal error occurred during: “Build Project”.
Java heap space

This is the DEX Error，I find the solutions by Google, one way is to modify the eclipse.ini, you can increase the memory allocated in eclipse.ini to this: -Xms128m -Xmx512m or something higher, but this didn’t work for me. After modify the eclipse.ini, I cannot start the eclipse. By StackOverflow, I find a solution:

eclipse.ini file must have -vm on first line and path on second line. don’t try to put everything into one line!

-vm
C:\Program Files\Java\jdk1.6.0_21\bin\javaw.exe

After add the -vm and the path in my eclipse.ini, I can start my Eclipse and the problem has been resolved.

Another way to solve the ” Conversion to Dalvik format failed: Unable to execute dex: null” problem is using the user library, the concrete steps are as follows :

1. Right-click the project in Eclipse and select “Build Path -> Add Libraries…”.
2. Select User Library from the list and click Next.
3. Click the “User Libraries…” button.
4. Click “New…” in the User Libraries dialog.
5. Give the user library a name and select the System library checkbox and click OK.
6. Highlight the newly added user library in the list and click the “Add JARs…” button and add the desired jar files.
7. Click OK on the User Libraries dialog.
8. Make sure the new user library is checked in the Add Library dialog and …