Improve gallery

app/src/main/java/com/hippo/util/SystemUiHelperImplKK.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hippo.util;
+
+import android.annotation.TargetApi;
+import android.app.Activity;
+import android.os.Build;
+import android.view.View;
+
+@TargetApi(Build.VERSION_CODES.KITKAT)
+class SystemUiHelperImplKK extends SystemUiHelperImplJB {
+
+    SystemUiHelperImplKK(Activity activity, int level, int flags,
+            SystemUiHelper.OnVisibilityChangeListener onVisibilityChangeListener) {
+        super(activity, level, flags, onVisibilityChangeListener);
+    }
+
+    @Override
+    protected int createHideFlags() {
+        int flag = super.createHideFlags();
+
+        if (mLevel == SystemUiHelper.LEVEL_IMMERSIVE) {
+            // If the client requested immersive mode, and we're on Android 4.4
+            // or later, add relevant flags. Applying HIDE_NAVIGATION without
+            // IMMERSIVE prevents the activity from accepting all touch events,
+            // so we only do this on Android 4.4 and later (where IMMERSIVE is
+            // present).
+            flag |= ((mFlags & SystemUiHelper.FLAG_IMMERSIVE_STICKY) != 0)
+                            ? View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+                            : View.SYSTEM_UI_FLAG_IMMERSIVE;
+        }
+
+        return flag;
+    }
+
+}