I recently activated ProGuard for my Eclipse Android project. After adding external libs and dynamically referenced classes to the proguard.cfg, I don't get any errors when building the apk. I get however a NoSuchMethodError when I try to start the installed app.
I narrowed it down to a specific method called in the onCreate method of the main activity. To simplify things, here's what the class and method look like (I left out a lot of code, but I think this should illustrate it):
public class TestMain extends TabActivity implements OnSharedPreferenceChangeListener{
...
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
testMethod();
}
}
testMethod() is defined as follows:
private void testMethod() {
int charsLeft = maxPostMessageLength - someEditText.length();
...
}
When I remove the "someEditText.length()" part, the app starts. So, the way I see it, the method that can't be found is the EditText.length() method. Strangely, though, the app also starts when I remove "someEditText.length()" from the testMethod and put it directly into the onCreate method:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
test = someEditText.length();
testMethod();
}
Does anyone know how I can get rid of this error and why I can call someEditText.length() directly in the onCreate method but not in a method called by the onCreate method? Without using Proguard the app works fine, of course.
Edit: I tried the -dontshrink, -dontobfuscate and the -dontoptimzie options in the proguard.cfg. With -dontoptimize the app starts without errors. Still, it would be interesting what exactly causes this specific error.
