安卓，日志记录是否会降低应用程序速度？

Question

安卓，日志记录是否会降低应用程序速度？

androidloggingproguard

5

在我的应用程序中，我有很多行日志，例如Log.i()、Log.e()和Log.d()。我在整个应用程序中广泛使用这些日志。

当我运行我的应用程序并将设备连接到Eclipse时，我可以看到数百行日志。我的问题是，这种行为是否会降低应用程序的速度？

=============

更新

感谢Frank的建议。我将建议的代码添加到proguard.cfg中，然后导出新的APK文件。这花费了很多时间，但最终生成了新的APK文件。然而，当我在真实设备上测试它时，仍然可以看到日志。

这是我的proguard.cfg:

# This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html

-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-verbose

# Optimization is turned off by default. Dex does not like code run
# through the ProGuard optimize and preverify steps (and performs some
# of these optimizations on its own).
-dontoptimize
-dontpreverify
# Note that if you want to enable optimization, you cannot just
# include optimization flags in your own project configuration file;
# instead you will need to point to the
# "proguard-android-optimize.txt" file instead of this one from your
# project.properties file.

-keepattributes *Annotation*
-keep public class com.google.vending.licensing.ILicensingService
-keep public class com.android.vending.licensing.ILicensingService

# For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
-keepclasseswithmembernames class * {
    native <methods>;
}

# 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);
}

-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}

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

# The support library contains references to newer platform versions.
# Don't warn about those in case this app is linking against an older
# platform version.  We know about them, and they are safe.
-dontwarn android.support.**

# Hesam - Remove all logs
-assumenosideeffects class android.util.Log {
    public static int v(...);
    public static int d(...);
    public static int i(...);
    public static int w(...);
    public static int e(...);
}

#-libraryjars /libs/gcm.jar
#-libraryjars /libs/libGoogleAnalytics.jar
#-libraryjars /libs/twitter4j-core-android-2.2.6.jar
#-libraryjars /libs/universal-image-loader-1.5.4.jar

-dontwarn javax.management.**
-dontwarn java.lang.management.**
-dontwarn org.apache.**
-dontwarn org.slf4j.**
-dontwarn org.json.*

-keep class com.google.** { *; }
-keep class twitter4j.** { *; }
-keep class com.nostra13.** { *; }

- Hesam

3

所有与应用逻辑无关的内容都会减慢应用程序的速度。但这是速度和（调试）信息之间的权衡。 - Moe

1个回答

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- Frank · Accepted Answer

答案很明显，是的，它会。

但有一个解决方案，您可以请求Proguard删除任何您所需级别的日志语句。这样，您的用户就不会受到他们根本看不到的冗长日志记录的影响。

将以下内容添加到您的Proguard配置中：

-assumenosideeffects class android.util.Log {
    public static *** d(...);
    public static *** v(...);
    public static *** i(...);
    public static *** w(...);
    public static *** e(...);
    public static *** wtf(...);
    }

这将移除LOG.d和LOG.v语句，您可以根据需要进行扩展。