1 files changed, 38 insertions, 0 deletions
diff --git a/java/com/android/dialer/common/concurrent/ThreadUtil.java b/java/com/android/dialer/common/concurrent/ThreadUtil.java
new file mode 100644
index 000000000..21cf4634e
--- /dev/null
+++ b/java/com/android/dialer/common/concurrent/ThreadUtil.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2017 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.android.dialer.common.concurrent;
+
+import android.os.Handler;
+import android.os.Looper;
+
+/** Application-wide utility methods for working with threads. */
+public class ThreadUtil {
+  private static volatile Handler mainThreadHandler;
+
+  /** Posts a runnable to the UI thread. */
+  public static void postOnUiThread(Runnable runnable) {
+    getUiThreadHandler().post(runnable);
+  }
+
+  /** Gets a handler which uses the main looper. */
+  public static Handler getUiThreadHandler() {
+    if (mainThreadHandler == null) {
+      mainThreadHandler = new Handler(Looper.getMainLooper());
+    }
+    return mainThreadHandler;
+  }
+}