我有一个Android应用程序，其调试版本工作完美 . 然而，它的发布版本（包括使用ProGuard进行模糊处理（配置如下所示））不起作用，并且始终在以下日志中崩溃：
01-26 15:33:34.048 E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.alxdroiddev.cameragear, PID: 6551
co: Fragment FragmentIntro{13af572c id=0x7f100177 android:switcher:2131755383:0} did not call through to super.onAttach()
at android.support.v4.app.FragmentManagerImpl.a(SourceFile:1232)
at android.support.v4.app.FragmentManagerImpl.v(SourceFile:2323)
at android.support.v4.app.FragmentManagerImpl.a(SourceFile:2136)
at android.support.v4.app.FragmentManagerImpl.b(SourceFile:2092)
at android.support.v4.app.FragmentManagerImpl.b(SourceFile:1969)
at bu.commitNowAllowingStateLoss(SourceFile:620)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(SourceFile:143)
at android.support.v4.view.ViewPager.populate(SourceFile:1268)
at android.support.v4.view.ViewPager.populate(SourceFile:1116)
at android.support.v4.view.ViewPager.onMeasure(SourceFile:1642)
at android.view.View.measure(View.java:17430)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:727)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:463)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.support.v7.widget.ContentFrameLayout.onMeasure(SourceFile:139)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2560)
at android.view.View.measure(View.java:17430)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2001)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1166)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1372)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1054)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5779)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
at android.view.Choreographer.doCallbacks(Choreographer.java:580)
at android.view.Choreographer.doFrame(Choreographer.java:550)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
我已经尝试添加所需的调用（在错误的片段中覆盖 onAttach() ），但这没有任何区别 . 有问题的片段在下面的代码中，它与库AppIntro一起使用 . 这是 FragmentIntro.java 的代码：
public class FragmentIntro extends Fragment implements ISlideBackgroundColorHolder {
/* Static stuff */
private static final String ARG_LAYOUT_TITLE_ID = "titleId";
private static final String ARG_LAYOUT_MESSAGE_ID = "messageId";
private static final String ARG_LAYOUT_DRAWABLE_ID = "drawableId";
private static final String ARG_LAYOUT_COLOR_ID = "colorId";
//private static final int layoutResId = R.layout.intro_fragment;
/* Private instance variables */
private int titleRedId, messageResId, drawableId, colorResId, colorCode;
private RelativeLayout mainLayout;
public static FragmentIntro newInstance(@StringRes int titleId, @StringRes int messageId, @DrawableRes int drawableId, @ColorRes int colorId) {
FragmentIntro fragSlide = new FragmentIntro();
Bundle args = new Bundle();
args.putInt(ARG_LAYOUT_TITLE_ID, titleId);
args.putInt(ARG_LAYOUT_MESSAGE_ID , messageId);
args.putInt(ARG_LAYOUT_DRAWABLE_ID , drawableId );
args.putInt(ARG_LAYOUT_COLOR_ID, colorId );
fragSlide.setArguments(args);
return fragSlide;
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
this.titleRedId = getArguments().getInt(ARG_LAYOUT_TITLE_ID);
this.messageResId = getArguments().getInt(ARG_LAYOUT_MESSAGE_ID);
this.drawableId = getArguments().getInt(ARG_LAYOUT_DRAWABLE_ID);
this.colorResId = getArguments().getInt(ARG_LAYOUT_COLOR_ID);
}
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
//super.onCreateView(inflater, container, savedInstanceState);
//if (container == null) return null;
View view = inflater.inflate(R.layout.intro_fragment, container, false);
Utils.globalAppContext = getContext().getApplicationContext();
colorCode = ContextCompat.getColor(getContext().getApplicationContext(), colorResId);
mainLayout = (RelativeLayout) view.findViewById(R.id.introLayout);
mainLayout.setBackgroundColor(colorCode);
((TextView) view.findViewById(R.id.textViewIntroTitle)).setText(titleRedId);
((TextView) view.findViewById(R.id.textViewIntroMessage)).setText(messageResId);
((ImageView) view.findViewById(R.id.imageViewIntro)).setImageDrawable(Utils.getDrawableFromResource(drawableId));
return view;
}
@Override
public void onSaveInstanceState(Bundle outState) {
outState.putInt(ARG_LAYOUT_TITLE_ID, titleRedId);
outState.putInt(ARG_LAYOUT_MESSAGE_ID, messageResId);
outState.putInt(ARG_LAYOUT_DRAWABLE_ID, drawableId);
outState.putInt(ARG_LAYOUT_COLOR_ID, colorResId);
super.onSaveInstanceState(outState);
}
@Keep
@TargetApi(23)
@Override
public void onAttach(Context context) {
super.onAttach(context);
}
@Keep
@SuppressWarnings("deprecation")
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public void onPause() {
super.onPause();
}
@Override
public void onResume() {
super.onResume();
}
@Override
public void onStart() {
super.onStart();
}
@Override
public void onStop() {
super.onStop();
}
// Implementation of ISlideBackgroundColorHolder
@Override
public int getDefaultBackgroundColor() {
return colorCode;
}
@Override
public void setBackgroundColor(@ColorInt int backgroundColor) {
mainLayout.setBackgroundColor(backgroundColor);
}
}
我正在使用的proguard配置文件就是这个（只有这个）：
#################################################################### GENERAL OPTIONS
-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontskipnonpubliclibraryclassmembers
-verbose
-dontpreverify
-repackageclasses ''
-allowaccessmodification
-mergeinterfacesaggressively
-overloadaggressively
-keepattributes *Annotation*,Signature,EnclosingMethod,InnerClasses
-assumenosideeffects class com.alxdroiddev.cameragear.FragmentQueryRunner { *; }
-assumenosideeffects class com.alxdroiddev.cameragear.FragmentCards { *; }
-assumenosideeffects class com.alxdroiddev.cameragear.db.InitialSampleData { *; }
# Required for Firebase Database (Models and POJOs)
-keepclassmembers class com.alxdroiddev.cameragear.models.** {
*;
}
#################################################################### REMOVE LOGGING
-assumenosideeffects class android.util.Log {
public static *** e(...);
public static *** w(...);
public static *** wtf(...);
public static *** d(...);
public static *** v(...);
public static *** i(...);
}
-assumenosideeffects class com.alxdroiddev.utils.CLog { *; }
#################################################################### IMAGECROPPER
-keepnames class com.theartofdev.edmodo.cropper.** { *; }
#################################################################### APPINTRO
-keep class com.github.paolorotolo.** {*;}
-keep public class com.alxdroiddev.cameragear.utils.FragmentIntro
-keepclassmembers public class com.alxdroiddev.cameragear.utils.FragmentIntro {*;}
-keep public class com.alxdroiddev.cameragear.ActivityIntro
-keepclassmembers public class com.alxdroiddev.cameragear.ActivityIntro {*;}
#################################################################### METADATA-EXTRACTOR
-keep class com.drew.imaging.** { *; }
-keep class com.drew.metadata.** { *; }
-keep class com.drew.lang.** { *; }
#################################################################### MISC STUFF
-keep class * extends java.util.ListResourceBundle {
protected java.lang.Object[][] getContents();
}
# Needed for Parcelable/SafeParcelable Creators to not get stripped
-keepnames class * implements android.os.Parcelable {
public static final ** CREATOR;
}
-keepclassmembers class * implements android.os.Parcelable {
static ** CREATOR;
}
# Needed when building against pre-Marshmallow SDK.
-dontwarn android.security.NetworkSecurityPolicy
-keep class android.support.customtabs.** { *; }
-dontwarn android.support.customtabs.**
-keep class com.google.android.gms.** { *; }
-dontwarn com.google.android.gms.**
#################################################################### IN-APP BILLING
-keep public interface com.android.vending.licensing.ILicensingService
-keep public class com.google.vending.licensing.ILicensingService
-keep public class com.android.vending.licensing.ILicensingService
#################################################################### KEEP ANDROID SUPPORT V7 AND DESIGN
-dontwarn android.support.design.**
-keep class android.support.design.** { *; }
-keep interface android.support.design.** { *; }
-keep public class android.support.design.R$** { *; }
-keep public class android.support.v7.widget.** { *; }
-keep public class android.support.v7.internal.widget.** { *; }
-keep public class android.support.v7.internal.view.menu.** { *; }
-keep public class * extends android.support.v4.view.ActionProvider {
public (android.content.Context);
}
-keep public class android.support.v14.preference.** { *; }
-keep public class android.support.v7.app.** { *; }
-keep public class android.support.v7.preference.** { *; }
-keep public class android.support.v4.app.** { *; }
-dontwarn android.support.**
-keep interface android.support.v4.** { *; }
-keep interface android.support.v7.** { *; }
-keep interface android.support.v13.** {*; }
-keep interface android.support.v14.** {*; }
#################################################################### ORG.APACHE.HTTP
-keep class org.apache.http.** { *; }
-keep interface org.apache.http.**
-dontwarn org.apache.**
#################################################################### GOOGLE PLAY SERVICES LIB - ADS
-keep public class com.google.android.gms.** { public *; }
#-keep class com.google.android.gms.**
# For Google Play Services
-keep public class com.google.android.gms.ads.**{
public *;
}
#################################################################### FIREBASE
-keep public class com.google.firebase.** { *; }
-keep public class com.google.firebase.analytics.** { *; }
-keep public class com.google.firebase.provider.** { *; }
-keep public class com.google.firebase.auth.** { *; }
-keep interface com.google.firebase.** {*; }
-keep class com.firebase.** { *; }
#################################################################### SUGGESTED OPTIMIZATIONS BY GOOGLE
# For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
-keepclasseswithmembernames class * {
native ;
}
# keep setters in Views so that animations can still work.
# see http://proguard.sourceforge.net/manual/examples.html#beans
-keepclassmembers public class * extends android.view.View {
void set*(***);
*** get*();
}
# We want to keep methods in Activity that could be used in the XML attribute onClick
-keepclassmembers class * extends android.app.Activity {
public void *(android.view.View);
}
# For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
-keepclassmembers enum * {
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keepclassmembers class **.R$* {
public static ;
}
# Understand the @Keep support annotation.
-keep class android.support.annotation.Keep
-keep @android.support.annotation.Keep class * {*;}
-keepclasseswithmembers class * {
@android.support.annotation.Keep ;
}
-keepclasseswithmembers class * {
@android.support.annotation.Keep ;
}
-keepclasseswithmembers class * {
@android.support.annotation.Keep (...);
}
我试图解决这个问题，特别是因为一切都在调试模式下运行，并没有抱怨 super.onAttach() . 它只有在使用上面的配置混淆后才会失败 .
非常感谢您的关注，感谢任何帮助 .
最好的祝福 .
3 回答
由于您的调试工作，问题可能只与模糊处理有关，而不是您的实际代码 .
您是否尝试将整个 class 保留在proguard中：
您是否尝试过删除这些行：
我搞定了 . 就像Doron所说的那样，它可能与混淆有关，而与代码本身无关 .
我将在这里发布我的方法和最终的proguard.cfg文件，只是作为面对同样问题的人的参考，以及如何[潜在]解决它（注意：它涉及大量的肘部油脂！） .
因为我还怀疑它与类或代码无关，所以我做的第一件事是删除所有不必要的覆盖，让两个类都被混淆并禁用所有优化 . 这是通过我的ProGuard配置中的这些设置完成的：
说明：
no_optimizations只是一个空占位符 . 它对ProGuard没有任何意义 . 你可以在那里使用"cucumber"这个词，它会产生同样的效果 . 这只意味着不会运行任何选择 . 它与不指定-optimizations指令不同，这意味着将运行所有优化 .我还注释了
FragmentIntro类和ActivityIntro的所有-keep. 我做了一个发布编译和测试 . 它优雅地跑了！上面文件中显示的所有其他混淆选项（在OP中）都打开并保持不变 .然后开始肘部润滑脂：我创建了一条线，每个ProGuard优化都被明确拒绝：
然后我开始允许一次进行1次优化，每次我做一个发布版本，安装在模拟器上，看看应用程序是否运行 .
如果该优化导致正在运行的应用程序，我将其留下没有感叹号（！），这意味着它将被允许，否则我会将感叹号放回并继续进行下一个优化：删除标记，释放构建，安装，测试 .
我做了29次，每次优化一次，只是为了弄清楚我的代码崩溃了什么优化 .
最后，我得到了所有不需要的优化，并得到了这个：
上面的行，清理并且仅拒绝（感叹号）不需要的optmizes，相当于：
由于上面的优化没有完成，我的代码编译并运行良好 . 另一方面，如果我允许上面的任何优化，它将在启动时崩溃 .
这是我清理后的工作proguard.cfg文件的结果：
我没有明确的想法为什么提到的标记优化破坏了我的代码，虽然我怀疑它优化了v4.app.Fragment相关类中的某些东西（特别是v4.app.FragmentManager，在1230行，阻止它正确调用onAttach （）并将f.mCalled设置为true） . 顺便说一句，我使用的是Android支持库25.1.0 .
无论如何，谢谢你的时间和关注，我希望上面解决这个恼人问题的方法对某些人有所帮助 .