安卓的Proguard的NoSuchMethodError [英] Android: Proguard NoSuchMethodError
问题描述
我最近启动的ProGuard我的Eclipse的Android项目。添加外部库和动态引用类的proguard.cfg后，建设APK时，我没有得到任何错误。我得到一个不过时的NoSuchMethodError我尝试启动安装的应用程序。
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.
我把范围缩小到所谓的主要活动的onCreate方法的具体方法。为简单起见，这里是类和方法的样子（我离开了很多code，但我认为这应该说明吧）
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的（）被定义如下：
testMethod() is defined as follows:
private void testMethod() {
int charsLeft = maxPostMessageLength - someEditText.length();
...
}
当我删除someEditText.length（）的一部分，应用程序启动。这样，即无法找到我看到的方式中，该方法是EditText.length（）方法。奇怪的是，应用程序也将启动，当我删除someEditText.length（）从TestMethod的，并把它直接进入onCreate方法：
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();
}
有谁知道我怎么能摆脱这种错误的，为什么我可以在onCreate方法，但不是在一个由onCreate方法调用的方法直接调用someEditText.length（）？
如果不使用Proguard的应用程序工作正常，当然。
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.
编辑：
我试过-dontshrink，-dontobfuscate并在proguard.cfg的-dontoptimzie选项。随着-dontoptimize应用程序启动时没有错误。
然而，究竟是什么原因导致这种特定的错误会很有趣。
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.
推荐答案
我无意中偶然发现了一个可能的解决方案。那么，它完全工作在我的情况，所以这是原来的问题的解决方案：
今天，我实现了一些code。与@Override注释，没有工作，在第一。幸运的是，别人已经有同样的问题，一个简单的Eclipse相关的解决方案：
<一href=\"http://stackoverflow.com/questions/1678122/must-override-a-superclass-method-errors-after-importing-a-project-into-eclipse/1678170#1678170\">'Must导入项目到Eclipse 后覆盖一个超类方法错误
I accidentally stumbled upon a possible solution. Well, it totally works in my case, so this IS a solution to the original problem: Today, I implemented some code with @Override annotations, which didn't work, at first. Luckily, someone else already had the same problem and an easy Eclipse-related solution: 'Must Override a Superclass Method' Errors after importing a project into Eclipse
现在，我想，好吧，如果我总是使用Java 1.5的水平之前，为什么不再次尝试ProGuard的，没有-dontoptimize选项，现在我将它设置为1.6。不能伤害...
Now, I thought, well, if I was always using Java level 1.5 before, why not try ProGuard again, without the -dontoptimize option, now that I set it to 1.6. Can't hurt...
和我能说什么，现在应用程序启动时，我没有得到奇怪的错误时EditText.length（）被调用的方法。
And what can I say, now the app starts and I don't get the strange error when EditText.length() is called in a method.
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