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POHow to implement a Java compiler and DEX converter into an Android app?
 

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  1. POHow to implement a Java compiler and DEX converter into an Android app?
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    <p>While trying to find an answer to <a href="https://stackoverflow.com/q/7085943/1482507">Android Jasper Reporting</a> I found out that there are two other questions to be answered therefor, which I been asked to ask as a question, not as an answer ;):</p> <p>My questions are now: "Is there any compiler to use directly on the device" AND "how to execute such without rooting the device. If anybody could give me a hint I would really appreciate it...</p> <hr> <p>I looked a little time forward on this approach, and found apps which makes it possible to create APKs directly on an Android device which is NOT rooted:<br></p> <ul> <li>TerminalIDE - <a href="https://play.google.com/store/apps/details?id=com.spartacusrex.spartacuside&amp;hl=de" rel="nofollow noreferrer">https://play.google.com/store/apps/details?id=com.spartacusrex.spartacuside&amp;hl=de</a></li> <li>JavaIDEdroid - <a href="http://code.google.com/p/java-ide-droid/" rel="nofollow noreferrer">http://code.google.com/p/java-ide-droid/</a></li> <li>AIDE - <a href="https://play.google.com/store/apps/details?id=com.aide.ui&amp;hl=en" rel="nofollow noreferrer">https://play.google.com/store/apps/details?id=com.aide.ui&amp;hl=en</a></li> </ul> <p>Looks like they're using the compiler from eclipse and a ported dex converter. Now I'm trying to figure out how to do the same.</p> <p>Sure: get the source code and look into it. But while I'm having curious problems to get a connection to the servers and trying to solve it, I follow the plea to ask this question here. Hoping both to help others with it and also getting an answer for myself ;)</p> <hr> <p>I took the org.eclipse.jdt.core_3.7.3.v20120119-1537.jar from the plugin directory of my indigo and tried following code:</p> <pre><code> org.eclipse.jdt.internal.compiler.batch.Main ecjMain = new org.eclipse.jdt.internal.compiler.batch.Main(new PrintWriter(System.out), new PrintWriter(System.err), false/*noSystemExit*/, null, progress); System.err.println("compiling..."); ecjMain.compile(new String[] {"-classpath", "/system/framework", storage.getAbsolutePath()+"/Test.java"}); ecjMain.compile(new String[] {storage.getAbsolutePath()+"/Test.java"}); System.err.println("compile succeeded!!!"); </code></pre> <p>Sometimes the Exception was thrown that java.lang.Object could not be found and othertimes it stuck doing nothing while heating up my processor with 100% usage ... ...</p> <p>At this time i could not figure out what is happening and why. And in cause that i have other work to do this part has to wait a little.</p>
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