Implement setScreenSaver enabled on Android

modules/juce_core/native/java/JuceAppActivity.java

@@ -66,6 +66,7 @@ public class JuceAppActivity   extends Activity
     {
         super.onCreate (savedInstanceState);
 
+        isScreenSaverEnabled = true;
         viewHolder = new ViewHolder (this);
         setContentView (viewHolder);
 
@@ -141,6 +142,7 @@ public class JuceAppActivity   extends Activity
 
     //==============================================================================
     private ViewHolder viewHolder;
+    private boolean isScreenSaverEnabled;
 
     public final ComponentPeerView createNewView (boolean opaque, long host)
     {
@@ -222,6 +224,24 @@ public class JuceAppActivity   extends Activity
         canvas.clipRect (left, top, right, bottom, android.graphics.Region.Op.DIFFERENCE);
     }
 
+    //==============================================================================
+    public final void setScreenSaver (boolean enabled)
+    {
+        if (isScreenSaverEnabled != enabled)
+        {
+            isScreenSaverEnabled = enabled;
+            if (enabled)
+                getWindow().clearFlags (WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+            else
+                getWindow().addFlags (WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+        }
+    }
+
+    public final boolean getScreenSaver ()
+    {
+        return isScreenSaverEnabled;
+    }
+
     //==============================================================================
     public final String getClipboardContent()
     {

modules/juce_core/native/juce_android_JNIHelpers.h

@@ -403,7 +403,9 @@ struct AndroidThreadScope
  STATICMETHOD (getLocaleValue,   "getLocaleValue",       "(Z)Ljava/lang/String;") \
  METHOD (scanFile,               "scanFile",             "(Ljava/lang/String;)V") \
  METHOD (getTypeFaceFromAsset,   "getTypeFaceFromAsset", "(Ljava/lang/String;)Landroid/graphics/Typeface;") \
- METHOD (getTypeFaceFromByteArray,"getTypeFaceFromByteArray","([B)Landroid/graphics/Typeface;")
+ METHOD (getTypeFaceFromByteArray,"getTypeFaceFromByteArray","([B)Landroid/graphics/Typeface;") \
+ METHOD (setScreenSaver,          "setScreenSaver",       "(Z)V") \
+ METHOD (getScreenSaver,          "getScreenSaver",       "()Z")
 
 DECLARE_JNI_CLASS (JuceAppActivity, JUCE_ANDROID_ACTIVITY_CLASSPATH);
 #undef JNI_CLASS_MEMBERS

modules/juce_gui_basics/native/juce_android_Windowing.cpp

@@ -710,12 +710,12 @@ JUCE_JNI_CALLBACK (JUCE_ANDROID_ACTIVITY_CLASSNAME, alertDismissed, void, (JNIEn
 //==============================================================================
 void Desktop::setScreenSaverEnabled (const bool isEnabled)
 {
-    // TODO
+    android.activity.callVoidMethod (JuceAppActivity.setScreenSaver, isEnabled);
 }
 
 bool Desktop::isScreenSaverEnabled()
 {
-    return true;
+    return android.activity.callBooleanMethod (JuceAppActivity.getScreenSaver);
 }
 
 //==============================================================================