1 files changed, 60 insertions, 0 deletions
diff --git a/samples/browseable/NetworkConnect/src/com.example.android.networkconnect/DownloadCallback.java b/samples/browseable/NetworkConnect/src/com.example.android.networkconnect/DownloadCallback.java
new file mode 100644
index 000000000..b553e8500
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+++ b/samples/browseable/NetworkConnect/src/com.example.android.networkconnect/DownloadCallback.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2016 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.example.android.networkconnect;
+
+import android.net.NetworkInfo;
+import android.support.annotation.IntDef;
+
+/**
+ * Sample interface containing bare minimum methods needed for an asynchronous task
+ * to update the UI Context.
+ */
+
+public interface DownloadCallback {
+    interface Progress {
+        int ERROR = -1;
+        int CONNECT_SUCCESS = 0;
+        int GET_INPUT_STREAM_SUCCESS = 1;
+        int PROCESS_INPUT_STREAM_IN_PROGRESS = 2;
+        int PROCESS_INPUT_STREAM_SUCCESS = 3;
+    }
+
+    /**
+     * Indicates that the callback handler needs to update its appearance or information based on
+     * the result of the task. Expected to be called from the main thread.
+     */
+    void updateFromDownload(String result);
+
+    /**
+     * Get the device's active network status in the form of a NetworkInfo object.
+     */
+    NetworkInfo getActiveNetworkInfo();
+
+    /**
+     * Indicate to callback handler any progress update.
+     * @param progressCode must be one of the constants defined in DownloadCallback.Progress.
+     * @param percentComplete must be 0-100.
+     */
+    void onProgressUpdate(int progressCode, int percentComplete);
+
+    /**
+     * Indicates that the download operation has finished. This method is called even if the
+     * download hasn't completed successfully.
+     */
+    void finishDownloading();
+
+}