[android-developers] How can I add a jar file to android app?

Hello :) I'm developing a application which runs on android. and I want to use a jar library file. so I add the file in ./lib folder and I set buildpath. However in emulator, ClassNotFoundException is thrown.. and I tried to make an external jar .. I got VerifyError but even these trying... al

[android-developers] My GL10 always get Error.. how?

I'm trying to make an opengl program. my program starts from SpriteText(sample program) but even call glDisable.. or glClear I can get glError... I'm trying may kinds of.. configspec int[] configSpec = { // EGL10.EGL_RED_SIZE, 4, // EGL10.EGL_G