發佈版本中的ClassNotFoundException

Question

我正在獲取自定義DialogPreference類的ClassNotFoundExption，但僅在進行版本構建之後。我完美地調試構建。

這裏是堆棧跟蹤：

10-26 16:29:08.521: E/AndroidRuntime(20593): FATAL EXCEPTION: main 
10-26 16:29:08.521: E/AndroidRuntime(20593): java.lang.RuntimeException: Unable to start activity ComponentInfo{path.to.my.app.de/path.to.my.app.preferences.Preferences}: android.view.InflateException: Binary XML file line #6: Error inflating class path.to.my.app.preferences.SeekBarPreference 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2787) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2803) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.app.ActivityThread.access$2300(ActivityThread.java:135) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2136) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.os.Handler.dispatchMessage(Handler.java:99) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.os.Looper.loop(Looper.java:144) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.app.ActivityThread.main(ActivityThread.java:4937) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at java.lang.reflect.Method.invokeNative(Native Method) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at java.lang.reflect.Method.invoke(Method.java:521) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at dalvik.system.NativeStart.main(Native Method) 
10-26 16:29:08.521: E/AndroidRuntime(20593): Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class path.to.my.app.preferences.SeekBarPreference 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.preference.GenericInflater.createItemFromTag(GenericInflater.java:441) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.preference.GenericInflater.rInflate(GenericInflater.java:481) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.preference.GenericInflater.rInflate(GenericInflater.java:493) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.preference.GenericInflater.inflate(GenericInflater.java:326) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.preference.GenericInflater.inflate(GenericInflater.java:263) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.preference.PreferenceManager.inflateFromResource(PreferenceManager.java:254) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.preference.PreferenceActivity.addPreferencesFromResource(PreferenceActivity.java:268) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at path.to.my.app.preferences.Preferences.onCreate(Unknown Source) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1069) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2751) 
10-26 16:29:08.521: E/AndroidRuntime(20593): ... 11 more 
10-26 16:29:08.521: E/AndroidRuntime(20593): Caused by: java.lang.ClassNotFoundException: path.to.my.app.preferences.SeekBarPreference in loader dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar:/data/app/path.to.my.app.de-1.apk] 
10-26 16:29:08.521: E/AndroidRuntime(20593): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at java.lang.ClassLoader.loadClass(ClassLoader.java:573) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at java.lang.ClassLoader.loadClass(ClassLoader.java:532) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.preference.GenericInflater.createItem(GenericInflater.java:375) 
10-26 16:29:08.521: E/AndroidRuntime(20593): at android.preference.GenericInflater.createItemFromTag(GenericInflater.java:430) 
10-26 16:29:08.521: E/AndroidRuntime(20593): ... 20 more 

被稱爲堆棧跟蹤的XML文件是：

<?xml version="1.0" encoding="utf-8"?> 
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" android:key="screen"> 
    <PreferenceCategory android:title="@string/pref.title" android:key="cat1" android:order="1"> 
    <path.to.my.app.preferences.SeekBarPreference android:title="@string/perimeter.head" android:key="myapp.perimeter" android:defaultValue="30" android:text=" km" android:max="80" min="5" android:progress="0"/> 
    <CheckBoxPreference android:key="myapp.saveFav" android:enabled="true" android:title="@string/fav.save.title" android:summary="@string/fav.save"></CheckBoxPreference> 
    </PreferenceCategory> 
    <PreferenceCategory android:title="@string/pref.personal" android:order="2"> 
    <EditTextPreference android:title="@string/search.customerNumber" android:key="myapp.wizard" android:inputType="textCapCharacters" android:maxLength="7"></EditTextPreference> 
    <EditTextPreference android:title="@string/reservation.firstName" android:key="myapp.firstName" android:inputType="textCapWords|textPersonName"></EditTextPreference> 
    <EditTextPreference android:title="@string/reservation.lastName" android:key="myapp.lastName" android:inputType="textCapWords|textPersonName"></EditTextPreference> 
    <EditTextPreference android:title="@string/reservation.street" android:key="myapp.street" android:inputType="textCapWords|textPostalAddress"></EditTextPreference> 
    <EditTextPreference android:title="@string/reservation.zip" android:key="myapp.zip" android:inputType="textCapWords|textPostalAddress"></EditTextPreference> 
    <EditTextPreference android:title="@string/reservation.city" android:key="myapp.city" android:inputType="textCapWords"></EditTextPreference> 
    <EditTextPreference android:title="@string/reservation.phone" android:key="myapp.phone" android:inputType="phone"></EditTextPreference> 
</PreferenceCategory> 
<PreferenceCategory android:order="3"> 
    <EditTextPreference android:title="@string/search.awdNumber" android:key="myapp.awd" android:inputType="textCapCharacters" android:maxLength="6">     </EditTextPreference> 
    <EditTextPreference android:title="@string/costControl.label" android:key="myapp.costControl" android:inputType="textCapWords" android:maxLength="15"></EditTextPreference> 
    </PreferenceCategory> 
</PreferenceScreen> 

對於我使用ProGuard的發佈版本，並已經有一行

-keep public class path.to.my.app.preferences.SeekBarPreference 

在配置文件中。

任何有用的提示呢？

Answer 1

我找到了一個解決方案（可能不是最好的？）。我添加了

-keep class * extends android.preference.DialogPreference { 
    public <init>(android.content.Context); 
    public <init>(android.content.Context, android.util.AttributeSet); 
    public <init>(android.content.Context, android.util.AttributeSet, int); 
    public void set*(...); 
} 

to proguard.cfg。

感謝布倫德爾。