使用Proguard和缩小时，软键不会隐藏在Android上

Question

我有一个LibGDX游戏，我只是注意到在某些时候软键被隐藏了。我不确定这种情况何时发生或发生了什么变化。

考虑到这个问题，我发现它在调试模式下工作正常。然后我尝试了关闭缩小的版本构建，它也运行良好。

我已尝试调整各种设置，但无法在启用缩小功能的情况下隐藏软键。

我在两台不同的Android 6设备上发生了这种情况。

我真的不知道从哪里开始看这个。还有其他人经历过这个吗？

我的UI相关代码在这里：

private void setUpAndroidUi() {
    // Do the stuff that initialize() would do for you
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        setKitKatVisibility();
    } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        setJellyBeanVisibility();
    } else {
        setStandardVisibility();
    }

    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
}

private void setStandardVisibility() {
    getWindow().getDecorView().setSystemUiVisibility(
            View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
}

@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
private void setJellyBeanVisibility() {
    getWindow().getDecorView().setSystemUiVisibility(
            View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                    | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    | View.SYSTEM_UI_FLAG_FULLSCREEN);
}

@TargetApi(Build.VERSION_CODES.KITKAT)
private void setKitKatVisibility() {
    getWindow().getDecorView().setSystemUiVisibility(
            View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                    | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    | View.SYSTEM_UI_FLAG_FULLSCREEN
                    | View.SYSTEM_UI_FLAG_IMMERSIVE);
}

Proguard文件是

# ********** DEAFULT ANDROID SETUP *************

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

# Optimizations: If you don't want to optimize, use the
# proguard-android.txt configuration file instead of this one, which
# turns off the optimization flags.  Adding optimization introduces
# certain risks, since for example not all optimizations performed by
# ProGuard works on all versions of Dalvik.  The following flags turn
# off various optimizations known to have issues, but the list may not
# be complete or up to date. (The "arithmetic" optimization can be
# used if you are only targeting Android 2.0 or later.)  Make sure you
# test thoroughly if you go this route.
-optimizations !code/simplification/cast,!field/*,!class/merging/*
-optimizationpasses 5
-allowaccessmodification
-dontpreverify

# The remainder of this file is identical to the non-optimized version
# of the Proguard configuration file (except that the other file has
# flags to turn off optimization).

-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-verbose

-renamesourcefileattribute SourceFile
-keepattributes SourceFile,LineNumberTable

-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.**

# ********** END OF DEAFULT ANDROID SETUP *************

# ********** AMAZON RELATED STUFF *************

-dontwarn com.amazon.**
-keep class com.amazon.** {*;}
-keepattributes *Annotation*

-optimizations !code/allocation/variable

# ********** END AMAZON RELATED STUFF *************

# ********** WE WANT TO KEEP SERIALIZABLE STUFF FOR REFLECTION *********
-keep class * implements java.io.Serializable
-keepnames class * implements java.io.Serializable
-keepclassmembers class * implements java.io.Serializable{
    public <init>();
    public <init>(android.content.Context);
}

-keepclassmembers class * implements java.io.Serializable {
    static final long serialVersionUID;
    private static final java.io.ObjectStreamField[] serialPersistentFields;
    !static !transient <fields>;
    private void writeObject(java.io.ObjectOutputStream);
    private void readObject(java.io.ObjectInputStream);
    java.lang.Object writeReplace();
    java.lang.Object readResolve();
}

# ********** END WE WANT TO KEEP SERIALIZABLE STUFF FOR REFLECTION *********

# ********** OGURY *********

-keepattributes Signature
-keep class sun.misc.Unsafe { *; }

-keep class shared_presage.** { *; }
-keep class io.presage.** { *; }
-keepclassmembers class io.presage.** {
 *;
}

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

-dontwarn org.apache.commons.collections.BeanMap
-dontwarn java.beans.**

-keepclassmembers class * implements java.io.Serializable {
    static final long serialVersionUID;
    private 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();
}

# ********** OGURY BESPOKE

-keep class android.media.**
-dontwarn android.media.**
-dontnote android.media.**

# ********** END OGURY *********

# ********** LIBGDX **************

-verbose

-dontwarn android.support.**
-dontwarn com.badlogic.gdx.backends.android.AndroidFragmentApplication
-dontwarn com.badlogic.gdx.utils.GdxBuild
-dontwarn com.badlogic.gdx.physics.box2d.utils.Box2DBuild
-dontwarn com.badlogic.gdx.jnigen.BuildTarget*

-keepclassmembers class com.badlogic.gdx.backends.android.AndroidInput* {
   <init>(com.badlogic.gdx.Application, android.content.Context, java.lang.Object, com.badlogic.gdx.backends.android.AndroidApplicationConfiguration);
}

-keepclassmembers class com.badlogic.gdx.physics.box2d.World {
   boolean contactFilter(long, long);
   void    beginContact(long);
   void    endContact(long);
   void    preSolve(long, long);
   void    postSolve(long, long);
   boolean reportFixture(long);
   float   reportRayFixture(long, float, float, float, float, float);
}

# ********** LIBGDX BESPOKE
-dontwarn java.awt.**
-dontwarn com.google.gwt.**
-keep,includedescriptorclasses class * implements com.badlogic.gdx.utils.Json*

# ********** END LIBGDX **************

# ********** GUAVA **********

-dontwarn javax.annotation.**
-dontwarn javax.inject.**
-dontwarn javax.xml.bind.**
-dontwarn sun.misc.Unsafe

# ********** END GUAVA **********

# ********** ADMOB **********

-keep,includedescriptorclasses public class com.google.android.gms.ads.** {
   public *;
}

-keep,includedescriptorclasses public class com.google.ads.** {
   public *;
}

# ********** END ADMOB **********

# ********** VUNGLE **********

-keep,includedescriptorclasses class com.vungle.** { public *; }
-keep,includedescriptorclasses class javax.inject.*
-keepattributes *Annotation*
-keepattributes Signature
-keep,includedescriptorclasses class dagger.*

# ********** END VUNGLE **********


# ********** BESPOKE **************

-keep class com.google.android.gms.** { *; }
-dontwarn com.google.android.gms.**
-keep class android.webkit.WebSettings
-dontwarn android.webkit.WebSettings
-keep,includedescriptorclasses class json.** {*; }
-keepnames class json.** {*; }
-keep class com.scribble.socketshared.messaging.IScrambledMessageReceiver
-dontwarn com.scribble.socketshared.messaging.IScrambledMessageReceiver
-dontwarn org.codehaus.**

-keep class com.facebook.ads.** { *; }
-dontwarn com.flurry.ads.**
-keep class com.flurry.android.** { *; }
-dontwarn com.flurry.android.**
-keep class com.inmobi.ads.** { *; }
-dontwarn com.inmobi.ads.**
-keep class com.inmobi.sdk.** { *; }
-dontwarn com.inmobi.sdk.**

-keep public @com.google.android.gms.common.util.DynamiteApi class * { *; }

# ********** END BESPOKE **************

Answer 1

将布局代码移动到onWindowFocusChanged解决了问题。我不能告诉你为什么，但它确实有效。

有一些示例代码here。

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    if (hasFocus) {
        getWindow().getDecorView().setSystemUiVisibility(
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
    }
}

Answer 2

必须是因为'@TargetApi'和'@RequiresApi'注释通过反射广告。如果你没有在proguard中添加“keep”并且它看不到该代码的任何路径，它将删除该方法。

因此，如果您将以下内容添加到proguard：

-keep <the package where this code is in>

它应该有用。