当我在手机上打开我的应用程序时出现异常。它没有proguard工作。我的配置有什么问题？非常感谢你！配置是我发现somwhere的默认android配置。不知道发生了什么
D/AndroidRuntime(15388): Shutting down VM
W/dalvikvm(15388): threadid=1: thread exiting with uncaught exception (group=0x40c3a1f8)
E/AndroidRuntime(15388): FATAL EXCEPTION: main
E/AndroidRuntime(15388): java.lang.NullPointerException
E/AndroidRuntime(15388): at aV.setViewValue(SourceFile:163)
E/AndroidRuntime(15388): at android.widget.SimpleAdapter.bindView(SimpleAdapter.java:168)
E/AndroidRuntime(15388): at android.widget.SimpleAdapter.createViewFromResource(SimpleAdapter.java:126)
E/AndroidRuntime(15388): at android.widget.SimpleAdapter.getView(SimpleAdapter.java:114)
E/AndroidRuntime(15388): at android.widget.AbsListView.obtainView(AbsListView.java:2214)
E/AndroidRuntime(15388): at android.widget.ListView.makeAndAddView(ListView.java:1774)
E/AndroidRuntime(15388): at android.widget.ListView.fillDown(ListView.java:672)
E/AndroidRuntime(15388): at android.widget.ListView.fillFromTop(ListView.java:732)
E/AndroidRuntime(15388): at android.widget.ListView.layoutChildren(ListView.java:1625)
E/AndroidRuntime(15388): at android.widget.AbsListView.onLayout(AbsListView.java:2044)
E/AndroidRuntime(15388): at android.view.View.layout(View.java:11418)
E/AndroidRuntime(15388): at android.view.ViewGroup.layout(ViewGroup.java:4224)
E/AndroidRuntime(15388): at android.widget.FrameLayout.onLayout(FrameLayout.java:431)
E/AndroidRuntime(15388): at android.view.View.layout(View.java:11418)
E/AndroidRuntime(15388): at android.view.ViewGroup.layout(ViewGroup.java:4224)
E/AndroidRuntime(15388): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1628)
E/AndroidRuntime(15388): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1486)
E/AndroidRuntime(15388): at android.widget.LinearLayout.onLayout(LinearLayout.java:1399)
E/AndroidRuntime(15388): at android.view.View.layout(View.java:11418)
E/AndroidRuntime(15388): at android.view.ViewGroup.layout(ViewGroup.java:4224)
E/AndroidRuntime(15388): at android.widget.FrameLayout.onLayout(FrameLayout.java:431)
E/AndroidRuntime(15388): at android.view.View.layout(View.java:11418)
E/AndroidRuntime(15388): at android.view.ViewGroup.layout(ViewGroup.java:4224)
E/AndroidRuntime(15388): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1628)
E/AndroidRuntime(15388): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2585)
E/AndroidRuntime(15388): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(15388): at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime(15388): at android.app.ActivityThread.main(ActivityThread.java:4507)
E/AndroidRuntime(15388): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(15388): at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime(15388): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
E/AndroidRuntime(15388): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
E/AndroidRuntime(15388): at dalvik.system.NativeStart.main(Native Method)
这是我的proguard配置
-injars bin/classes
-injars libs
-outjars bin/classes-processed.jar
-libraryjars /libs/android-support-v13.jar
#
# This ProGuard configuration file illustrates how to process Android
# applications.
# Usage:
# java -jar proguard.jar @android.pro
#
# If you're using the Android SDK (version 2.3 or higher), the android tool
# already creates a file like this in your project, called proguard.cfg.
# It should contain the settings of this file, minus the input and output paths
# (-injars, -outjars, -libraryjars, -printmapping, and -printseeds).
# The generated Ant build file automatically sets these paths.
# Specify the input jars, output jars, and library jars.
# Note that ProGuard works with Java bytecode (.class),
# before the dex compiler converts it into Dalvik code (.dex).
# Save the obfuscation mapping to a file, so you can de-obfuscate any stack
# traces later on.
-printmapping bin/classes-processed.map
# You can print out the seeds that are matching the keep options below.
#-printseeds bin/classes-processed.seeds
# Preverification is irrelevant for the dex compiler and the Dalvik VM.
-dontpreverify
# Reduce the size of the output some more.
-repackageclasses ''
-allowaccessmodification
# Switch off some optimizations that trip older versions of the Dalvik VM.
-optimizations !code/simplification/arithmetic
# Keep a fixed source file attribute and all line number tables to get line
# numbers in the stack traces.
# You can comment this out if you're not interested in stack traces.
-renamesourcefileattribute SourceFile
-keepattributes SourceFile,LineNumberTable
# RemoteViews might need annotations.
-keepattributes *Annotation*
# Preserve all fundamental application classes.
-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
# Preserve all View implementations, their special context constructors, and
# their setters.
-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*(...);
}
# Preserve all classes that have special context constructors, and the
# constructors themselves.
-keepclasseswithmembers class * {
public <init>(android.content.Context, android.util.AttributeSet);
}
# Preserve all classes that have special context constructors, and the
# constructors themselves.
-keepclasseswithmembers class * {
public <init>(android.content.Context, android.util.AttributeSet, int);
}
# Preserve the special fields of all Parcelable implementations.
-keepclassmembers class * implements android.os.Parcelable {
static android.os.Parcelable$Creator CREATOR;
}
# Preserve static fields of inner classes of R classes that might be accessed
# through introspection.
-keepclassmembers class **.R$* {
public static <fields>;
}
# Preserve the required interface from the License Verification Library
# (but don't nag the developer if the library is not used at all).
#-keep public interface com.android.vending.licensing.ILicensingService
#-dontnote com.android.vending.licensing.ILicensingService
# The Android Compatibility library references some classes that may not be
# present in all versions of the API, but we know that's ok.
-dontwarn android.support.**
# Preserve all native method names and the names of their classes.
-keepclasseswithmembernames class * {
native <methods>;
}
# Preserve the special static methods that are required in all enumeration
# classes.
-keepclassmembers class * extends java.lang.Enum {
public static **[] values();
public static ** valueOf(java.lang.String);
}
# Explicitly preserve all serialization members. The Serializable interface
# is only a marker interface, so it wouldn't save them.
# You can comment this out if your application doesn't use serialization.
# If your code contains serializable classes that have to be backward
# compatible, please refer to the manual.
#-keepclassmembers class * implements java.io.Serializable {
# static final long serialVersionUID;
# static final java.io.ObjectStreamField[] serialPersistentFields;
# private void writeObject(java.io.ObjectOutputStream);
# private void readObject(java.io.ObjectInputStream);
# java.lang.Object writeReplace();
# java.lang.Object readResolve();
#}
# Your application may contain more items that need to be preserved;
# typically classes that are dynamically created using Class.forName:
# -keep public class mypackage.MyClass
# -keep public interface mypackage.MyInterface
# -keep public class * implements mypackage.MyInterface
# Needed by google-api-client to keep generic types and @Key annotations accessed via reflection
-keepclassmembers class * {
@com.google.api.client.util.Key <fields>;
}
-keepattributes Signature,RuntimeVisibleAnnotations,AnnotationDefault,*Annotation*
-dontwarn sun.misc.Unsafe
-keepattributes
-dontoptimize
#-dontshrink
答案 0 :(得分：3)
我目前有完全相同的问题。我使用带有parent和false格式的布局inflater的自定义适配器完美地处理代码作为第2和第3个参数。
由于代码在没有混淆的情况下运行良好，我有足够的信心忽略由于错误使用Android API而返回的null视图的stackoverflow上的所有问题和响应。
如果您还有没有混淆的问题，请忽略此答案和问题，然后继续！ Check these questions
我会尽力在这个答案中报告我的发现。这个答案可能会随着时间而增长如果您渴望了解最新信息，请跳至底部的结论。
此处的直接解决方案是更新您的proguard配置，以排除您的代码在混淆后失败的类。
在你的proguard配置文件中看起来应该是这样的：
-keep class * extends your.company.secret.package
For more information on proguard start looking here。还要确保您至少拥有Android项目所需的最小proguard配置文件。 Check this example
在调查此问题时，您可能会对混淆之前该类的原始名称感兴趣。这应该会让事情变得容易多了。您可以在mapping.txt文件的proguard文件夹中的项目的bin文件夹中找到此映射。
/bin/proguard/mapping.txt
在我的情况下，我能够确定以下代码行的错误。这些行仅存在于失败的适配器中，而其他代码与工作适配器相同。以下所有代码都是getView(final int position, View convertView, final ViewGroup parent):View方法
holder.layout.removeAllViews();
TextView tView;
for (final String text : mItems.getTextList()) {
tView = new TextView(mContext);
tView.setTextSize(14);
tView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
tView.setText(text);
holder.layout.addView(tView);
}
如果我删除addView()和removeAllViews()来电，那么一切顺利。
我的第一个想法是检查该行代码的源代码。我在stacktrace中找到了以下几点。
11-20 14:19:40.709: E/AndroidRuntime(22236): FATAL EXCEPTION: main
11-20 14:19:40.709: E/AndroidRuntime(22236): Process: your.company.secret.package, PID: 22236
11-20 14:19:40.709: E/AndroidRuntime(22236): java.lang.NullPointerException
11-20 14:19:40.709: E/AndroidRuntime(22236): at android.widget.AbsListView.obtainView(AbsListView.java:2265)
Source for AbsListView can be found on grepcode。然而，查看该代码并没有让我在那里找到解决方案的勇气。相反，我转向其他资源。以后可能会回来。
我在Android 4.4设备上执行了此代码，因此行号甚至不匹配。
正确的代码行是2177.与此行匹配：
child = mAdapter.getView(position, null, this);
有关示例项目，请参阅https://github.com/hanscappelle/so-10822397。您需要Android Studio（Beta）0.8.2和最新的构建工具。我还必须手动获取proguard-android.txt文件并将其放置到位。
您可以注释掉适配器中用于静态ViewHolder类的布局字段的行。一旦启用了proguard并且应用程序在设备上运行，那些就会失败。
（DONE）我在代码中有其他适配器，即使在混淆之后也能正常工作。我会检查这些与失败后的差异
（完成）我真的要检查4.3设备，这样我才能正确查看Android源代码。
（DONE）创建示例项目
使用示例项目进行TODO完整分析
似乎与在自定义适配器的getView()方法中动态添加视图有关。这与代码混淆相结合。
答案 1 :(得分：0)
尝试关闭可能炸毁Dalvik的更多优化措施。经过进一步检查，看起来您实际上正在禁用所有优化。
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
也尝试保留这些..
-keep public class * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class com.android.vending.licensing.ILicensingService
-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-verbose
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
-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.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class com.android.vending.licensing.ILicensingService
-keepclasseswithmembernames class * {
native <methods>;
}
-keepclasseswithmembernames class * {
public <init>(android.content.Context, android.util.AttributeSet);
}
-keepclasseswithmembernames class * {
public <init>(android.content.Context, android.util.AttributeSet, int);
}
-keepclassmembers enum * {
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keep class * implements android.os.Parcelable {
public static final android.os.Parcelable$Creator *;
}