Change the reflecting method of @activity#convertToTranslucent after Android L.

Author: kesco

library/src/main/java/me/imid/swipebacklayout/lib/Utils.java

@@ -2,6 +2,8 @@
 package me.imid.swipebacklayout.lib;
 
 import android.app.Activity;
+import android.app.ActivityOptions;
+import android.os.Build;
 
 import java.lang.reflect.Method;
 
@@ -46,6 +48,17 @@ public static void convertActivityFromTranslucent(Activity activity) {
      * with the {@link android.R.attr#windowIsFloating} attribute.
      */
     public static void convertActivityToTranslucent(Activity activity) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            convertActivityToTranslucentAfterL(activity);
+        } else {
+            convertActivityToTranslucentBeforeL(activity);
+        }
+    }
+
+    /**
+     * Calling the convertToTranslucent method on platforms before Android 5.0
+     */
+    public static void convertActivityToTranslucentBeforeL(Activity activity) {
         try {
             Class<?>[] classes = Activity.class.getDeclaredClasses();
             Class<?> translucentConversionListenerClazz = null;
@@ -63,4 +76,28 @@ public static void convertActivityToTranslucent(Activity activity) {
         } catch (Throwable t) {
         }
     }
+
+    /**
+     * Calling the convertToTranslucent method on platforms after Android 5.0
+     */
+    private static void convertActivityToTranslucentAfterL(Activity activity) {
+        try {
+            Method getActivityOptions = Activity.class.getDeclaredMethod("getActivityOptions");
+            getActivityOptions.setAccessible(true);
+            Object options = getActivityOptions.invoke(activity);
+
+            Class<?>[] classes = Activity.class.getDeclaredClasses();
+            Class<?> translucentConversionListenerClazz = null;
+            for (Class clazz : classes) {
+                if (clazz.getSimpleName().contains("TranslucentConversionListener")) {
+                    translucentConversionListenerClazz = clazz;
+                }
+            }
+            Method convertToTranslucent = Activity.class.getDeclaredMethod("convertToTranslucent",
+                    translucentConversionListenerClazz, ActivityOptions.class);
+            convertToTranslucent.setAccessible(true);
+            convertToTranslucent.invoke(activity, null, options);
+        } catch (Throwable t) {
+        }
+    }
 }