android - fragment 计数无法按预期使用 ProGuard

Question

我的 AppCompatActivity 上有一个函数，它确定 fragment 列表中 fragment 的数量 - 下面是代码:

if (getSupportFragmentManager().getBackStackEntryCount() > 0) {

            List<Fragment> fragmentList = getSupportFragmentManager().getFragments();

            if (fragmentList != null) {
                for (Fragment fragment : fragmentList) {
                    if (fragment != null) {
                        if (fragment.getClass().getSimpleName().equals("SelfCBaseFragment")) {

                            if (fragment.getChildFragmentManager().getBackStackEntryCount() > 1) {
                                fragment.getChildFragmentManager().popBackStack();

                            } else {
                                getSupportFragmentManager().popBackStack();
                                hideActionBar();
                            }
                        } else if (fragment.getClass().getSimpleName().equals("ABCFragment")) {

                            getSupportFragmentManager().popBackStackImmediate();
                        } else {
                            MyLog.d("FragmentName:", fragment.getClass().getSimpleName());
                            getSupportFragmentManager().popBackStack();
                        }
                    }

                }
            }
        } else {
            hideActionBar();
        }

代码在调试时完美运行，即 ProGuard 关闭。但是当导出已签名的 APK 时，它没有按预期工作，即它没有命中 hideActionBar。当我回到初始屏幕时，我可以看到 hideActionBar() 没有被调用。我需要再次在操作栏中单击返回，然后它会隐藏操作栏。任何提示可能是什么原因造成的？

我的 ProGuard 文件中是否缺少我需要添加的内容？

附加的 ProGuard 文件:

# To enable ProGuard in your project, edit project.properties
# to define the proguard.config property as described in that file.
#
# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in ${sdk.dir}/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the ProGuard
# include property in project.properties.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}


## Square Picasso specific rules ##
## https://square.github.io/picasso/ ##

-dontwarn com.squareup.okhttp.**
#json
# gson
-keepattributes *Annotation*
-keepattributes Signature
-keepattributes Exceptions

# Gson specific classes
-keep class sun.misc.Unsafe { *; }

-keep class com.flurry.** { *; }
-dontwarn com.flurry.**
-keepattributes *Annotation*,EnclosingMethod
-keepclasseswithmembers class * {
public <init>(android.content.Context, android.util.AttributeSet, int);
}
-keep public class com.google.android.gms.common.internal.safeparcel.SafeParcelable {
    public static final *** NULL;
}

-keepnames @com.google.android.gms.common.annotation.KeepName class *
-keepclassmembernames class * {
    @com.google.android.gms.common.annotation.KeepName *;
}

-keepnames class * implements android.os.Parcelable {
    public static final ** CREATOR;
}
-renamesourcefileattribute SourceFile
-keepattributes SourceFile,LineNumberTable
-keep public class com.google.android.gms.* { public *; }
-dontwarn com.google.android.gms.**
-dontwarn android.support.**

-keep class butterknife.** { *; }
-dontwarn butterknife.internal.**
-keep class **$$ViewBinder { *; }

-keepclasseswithmembernames class * {
    @butterknife.* <fields>;
}

-keepclasseswithmembernames class * {
    @butterknife.* <methods>;
}

-assumenosideeffects class android.util.Log {
    public static boolean isLoggable(java.lang.String, int);
    public static int v(...);
    public static int i(...);
    public static int w(...);
    public static int d(...);
    public static int e(...);
}

Answer 1

这是使用 Proguard 和类名的预期行为。你在做:

fragment.getClass().getSimpleName().equals("MyFragmentClassName")

但是MyFragmentClassName是用Proguard改变的，所以如果要解析原来的类名就得保留。

最优化的版本是只保留需要它的类的名称。在这种特定情况下，您必须添加到您的 Proguard 文件中:

-keepnames package.of.this.fragment.SelfCBaseFragment
-keepnames package.of.this.other.fragment.ABCFragment