带有 proguard 规则的 Android 应用程序崩溃

Question

我的应用程序在不应用 pro-guard-rules 的情况下运行良好，但出于安全目的，我必须在我的应用程序中应用 pro-guard-rules。 当我应用规则并尝试运行我的应用程序时，我遇到了这些错误。

 FATAL EXCEPTION: main
                                                                    Process: com.nearely.nearelysales, PID: 4275
                                                                    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.nearely.nearelysales/com.nearely.nearelysales.activities.MainActivity}: java.lang.NullPointerException
                                                                        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)
                                                                        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
                                                                        at android.app.ActivityThread.access$800(ActivityThread.java:135)
                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
                                                                        at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                        at android.os.Looper.loop(Looper.java:136)
                                                                        at android.app.ActivityThread.main(ActivityThread.java:5001)
                                                                        at java.lang.reflect.Method.invokeNative(Native Method)
                                                                        at java.lang.reflect.Method.invoke(Method.java:515)
                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
                                                                        at dalvik.system.NativeStart.main(Native Method)
                                                                     Caused by: java.lang.NullPointerException
                                                                        at com.nearely.nearelysales.activities.MainActivity.k(Unknown Source)
                                                                        at com.nearely.nearelysales.activities.MainActivity.onCreate(Unknown Source)
                                                                        at android.app.Activity.performCreate(Activity.java:5231)
                                                                        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
                                                                        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
                                                                        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233) 
                                                                        at android.app.ActivityThread.access$800(ActivityThread.java:135) 
                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
                                                                        at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                        at android.os.Looper.loop(Looper.java:136) 
                                                                        at android.app.ActivityThread.main(ActivityThread.java:5001) 
                                                                        at java.lang.reflect.Method.invokeNative(Native Method) 
                                                                        at java.lang.reflect.Method.invoke(Method.java:515) 
                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785) 
                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601) 
                                                                        at dalvik.system.NativeStart.main(Native Method)  

这是我的程序规则文件：

proguard-rules.pro

-injars      libs
-outjars     bin/classes-processed.jar
# -libraryjars C:\dev\android-sdk\platforms\android-23\android.jar

-dontpreverify
-repackageclasses ''
-allowaccessmodification
-optimizations !code/simplification/arithmetic
-keepattributes *Annotation*

-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider

-keep public class * extends android.view.View {
    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*(...);
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet);
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet, int);
}

-keepclassmembers class * extends android.content.Context {
   public void *(android.view.View);
   public void *(android.view.MenuItem);
}

-keepclassmembers class * implements android.os.Parcelable {
    static ** CREATOR;
}

-keepclassmembers class **.R$* {
    public static <fields>;
}

-keepclassmembers class * {
    @android.webkit.JavascriptInterface <methods>;
}

-dontwarn butterknife.internal.**
-keep class **$$ViewInjector { *; }
-keepnames class * { @butterknife.InjectView *;}

-keep class javax.ws.rs.** { *; }
-dontwarn org.immutables.gson.**

-dontwarn android.test.**
-dontwarn org.junit.**

Answer 1

似乎您使用了 volley 并且使用 proguard 使您的应用程序崩溃。 您可以将此行写入您的proGuard 。

-keep class org.apache.commons.logging.**

Answer 2

在您的应用程序中设置 Proguard Enabled 后，所有 Proguard 自定义规则取决于您是在应用程序初始阶段还是中期或后期设置 Proguard 启用。

1. 最初的

这意味着如果您在应用程序中集成任何第三方库，如果库提供或支持 proguard，则规则由其自己设置。

2.中后期

中间如果你在你的应用程序中设置了proguard并且你已经集成了很多第三方库，这意味着每个库都是没有规则的集成。 然后，您需要在 proguard-rules.pro 文件中设置自定义规则。

应用程序崩溃取决于多种情况。一个是您正在使用的 Pojo 类或模型类被 proguard 混淆，因此您需要在 proguard-rules.pro 文件中设置规则，例如：

-keep class * {
     public private *;
}

或以其他方式根据要求使用以下代码

-dontwarn com.squareup.okhttp.**
-ignorewarnings
-keep class * {
    public private *;
}

-keep class com.google.android.gms.* { *; }
-dontwarn com.google.android.gms.**

-dontwarn org.xmlpull.v1.**
-dontnote org.xmlpull.v1.**
-keep class org.xmlpull.* { *; }

#retRofit
# Platform calls Class.forName on types which do not exist on Android to determine platform.
-dontnote retrofit2.Platform
# Platform used when running on RoboVM on iOS. Will not be used at runtime.
-dontnote retrofit2.Platform$IOS$MainThreadExecutor
# Platform used when running on Java 8 VMs. Will not be used at runtime.
-dontwarn retrofit2.Platform$Java8
# Retain generic type information for use by reflection by converters and adapters.
-keepattributes Signature
# Retain declared checked exceptions for use by a Proxy instance.
-keepattributes Exceptions
-keepclasseswithmembers class * {
    @retrofit2.http.* <methods>;
}
# Orm
-keep class * extends com.raizlabs.android.dbflow.config.DatabaseHolder.* { *; }
-keepclassmembers class * {
    native <methods>;
}
-dontwarn okio.**
-dontwarn com.squareup.okhttp.**
-dontwarn okhttp3.**
-dontwarn javax.annotation.**
-dontwarn com.android.volley.toolbox.**

# com.github.siyamed:android-shape-imageview
-dontwarn android.support.v7.**
-keepattributes *Annotation,Signature
-dontwarn com.github.siyamed.**
-keep class com.github.siyamed.shapeimageview.*{ *; }
-dontwarn org.xmlpull.v1.**
-dontwarn uk.co.senab.photoview.**

#Image Cropper
-keep class androidx.appcompat.widget.* { *; }



# Keep source file names, line numbers, and Parse class/method names for easier debugging
 -keepattributes SourceFile,LineNumberTable
 -keepnames class com.parse.* { *; }


 # Required for Parse
 -keepattributes *Annotation*
 -keepattributes Signature
 -dontwarn com.squareup.**
 -dontwarn okio.**


-keepattributes SourceFile,LineNumberTable
-keep class com.parse.*{ *; }
-dontwarn com.parse.**
-dontwarn com.squareup.picasso.**
-keepclasseswithmembernames class * {
    native <methods>;
}