diff options
Diffstat (limited to 'samples/SupportLeanbackShowcase/app/src/main/java/android/support/v17/leanback/supportleanbackshowcase/utils/ResourceCache.java')
-rw-r--r-- | samples/SupportLeanbackShowcase/app/src/main/java/android/support/v17/leanback/supportleanbackshowcase/utils/ResourceCache.java | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/samples/SupportLeanbackShowcase/app/src/main/java/android/support/v17/leanback/supportleanbackshowcase/utils/ResourceCache.java b/samples/SupportLeanbackShowcase/app/src/main/java/android/support/v17/leanback/supportleanbackshowcase/utils/ResourceCache.java new file mode 100644 index 000000000..09a196565 --- /dev/null +++ b/samples/SupportLeanbackShowcase/app/src/main/java/android/support/v17/leanback/supportleanbackshowcase/utils/ResourceCache.java @@ -0,0 +1,36 @@ +/* + * Copyright (C) 2015 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 android.support.v17.leanback.supportleanbackshowcase.utils; + +import android.util.SparseArray; +import android.view.View; + +/** + * ResourceCache allows retrieving children from a given view and caches the resulting views in + * order to prevent future lookups. + */ +public class ResourceCache { + + private final SparseArray<View> mCachedViews = new SparseArray<View>(); + + public <ViewType extends View> ViewType getViewById(View view, int resId) { + View child = mCachedViews.get(resId, null); + if (child == null) { + child = view.findViewById(resId); + mCachedViews.put(resId, child); + } + return (ViewType) child; + } +} |