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NetworkConnect / src / com.example.android.networkconnect /

DownloadCallback.java

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/*
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 * Copyright (C) 2016 The Android Open Source Project
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.example.android.networkconnect;
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import android.net.NetworkInfo;
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import android.support.annotation.IntDef;
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/**
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 * Sample interface containing bare minimum methods needed for an asynchronous task
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 * to update the UI Context.
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 */
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public interface DownloadCallback {
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    interface Progress {
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        int ERROR = -1;
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        int CONNECT_SUCCESS = 0;
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        int GET_INPUT_STREAM_SUCCESS = 1;
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        int PROCESS_INPUT_STREAM_IN_PROGRESS = 2;
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        int PROCESS_INPUT_STREAM_SUCCESS = 3;
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    }
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    /**
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     * Indicates that the callback handler needs to update its appearance or information based on
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     * the result of the task. Expected to be called from the main thread.
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     */
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    void updateFromDownload(String result);
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    /**
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     * Get the device's active network status in the form of a NetworkInfo object.
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     */
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    NetworkInfo getActiveNetworkInfo();
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    /**
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     * Indicate to callback handler any progress update.
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     * @param progressCode must be one of the constants defined in DownloadCallback.Progress.
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     * @param percentComplete must be 0-100.
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     */
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    void onProgressUpdate(int progressCode, int percentComplete);
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    /**
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     * Indicates that the download operation has finished. This method is called even if the
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     * download hasn't completed successfully.
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     */
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    void finishDownloading();
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}
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