parent
e1adbe50c8
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131b9c2770
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package com.arialyy.downloadutil.core; |
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|
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import android.os.Message; |
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import android.util.Log; |
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import com.arialyy.downloadutil.core.inf.IDownloadSchedulers; |
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import com.arialyy.downloadutil.core.pool.ExecutePool; |
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|
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/** |
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* Created by lyy on 2016/8/16. |
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* 任务下载器,提供抽象的方法供具体的实现类操作 |
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*/ |
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public class DownloadSchedulers implements IDownloadSchedulers { |
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private static final String TAG = "DownloadSchedulers"; |
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private static final Object LOCK = new Object(); |
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private static volatile DownloadSchedulers INSTANCE = null; |
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/** |
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* 任务开始 |
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*/ |
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public static final int START = 1; |
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/** |
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* 任务停止 |
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*/ |
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public static final int STOP = 2; |
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/** |
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* 任务失败 |
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*/ |
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public static final int FAIL = 3; |
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/** |
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* 任务取消 |
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*/ |
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public static final int CANCEL = 4; |
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/** |
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* 任务完成 |
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*/ |
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public static final int COMPLETE = 5; |
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|
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/** |
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* 下载失败次数 |
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*/ |
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int mFailNum = 10; |
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|
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/** |
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* 超时时间 |
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*/ |
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long mTimeOut = 10000; |
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|
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/** |
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* 下载器任务监听 |
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*/ |
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OnTargetListener mTargetListener; |
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DownloadTaskQueue mQueue; |
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public static DownloadSchedulers getInstance(DownloadTaskQueue queue) { |
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if (INSTANCE == null) { |
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synchronized (LOCK) { |
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INSTANCE = new DownloadSchedulers(queue); |
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} |
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} |
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return INSTANCE; |
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} |
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|
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/** |
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* Target处理任务监听 |
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*/ |
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public interface OnTargetListener { |
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/** |
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* 任务开始 |
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*/ |
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public void onTaskStart(Task task); |
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|
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/** |
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* 任务停止 |
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*/ |
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public void onTaskStop(Task task); |
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|
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/** |
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* 任务取消 |
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*/ |
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public void onTaskCancel(Task task); |
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|
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/** |
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* 任务下载失败 |
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*/ |
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public void onTaskFail(Task task); |
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/** |
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* 任务完成 |
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*/ |
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public void onTaskComplete(Task task); |
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} |
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public DownloadSchedulers(DownloadTaskQueue downloadTaskQueue) { |
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mQueue = downloadTaskQueue; |
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} |
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@Override public boolean handleMessage(Message msg) { |
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DownloadEntity entity = (DownloadEntity) msg.obj; |
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if (entity == null) { |
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Log.e(TAG, "请传入下载实体DownloadEntity"); |
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return true; |
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} |
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switch (msg.what) { |
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case STOP: |
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case CANCEL: |
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if (mQueue.getExecutePool().size() != ExecutePool.SIZE) { |
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startNextTask(entity); |
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} |
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break; |
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case COMPLETE: |
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startNextTask(entity); |
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break; |
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case FAIL: |
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handleFailTask(entity); |
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break; |
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} |
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callback(msg.what, entity); |
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return true; |
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} |
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|
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/** |
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* 回调 |
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* |
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* @param state 状态 |
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* @param entity 下载实体 |
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*/ |
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private void callback(int state, DownloadEntity entity) { |
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if (mTargetListener != null) { |
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Task task = mQueue.getTask(entity); |
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switch (state) { |
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case START: |
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mTargetListener.onTaskStart(task); |
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break; |
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case STOP: |
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mTargetListener.onTaskStop(task); |
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break; |
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case CANCEL: |
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mTargetListener.onTaskCancel(task); |
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break; |
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case COMPLETE: |
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mTargetListener.onTaskComplete(task); |
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break; |
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case FAIL: |
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mTargetListener.onTaskFail(task); |
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break; |
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} |
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} |
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} |
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/** |
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* 处理下载任务下载失败的情形 |
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* |
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* @param entity 失败实体 |
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*/ |
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@Override public void handleFailTask(DownloadEntity entity) { |
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if (entity.getFailNum() <= mFailNum) { |
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Task task = mQueue.getTask(entity); |
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mQueue.reTryStart(task); |
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} else { |
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startNextTask(entity); |
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} |
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} |
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/** |
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* 启动下一个任务,条件:任务停止,取消下载,任务完成 |
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* |
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* @param entity 通过Handler传递的下载实体 |
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*/ |
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@Override public void startNextTask(DownloadEntity entity) { |
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mQueue.removeTask(entity); |
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Task newTask = mQueue.getNextTask(); |
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if (newTask == null) { |
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Log.w(TAG, "没有下一任务"); |
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return; |
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} |
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if (newTask.getDownloadEntity().getState() == DownloadEntity.STATE_WAIT) { |
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mQueue.startTask(newTask); |
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} |
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} |
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/** |
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* 设置下载器监听 |
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* |
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* @param targetListener {@link OnTargetListener} |
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*/ |
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public void setOnTargetListener(OnTargetListener targetListener) { |
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this.mTargetListener = targetListener; |
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} |
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public void setFailNum(int mFailNum) { |
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this.mFailNum = mFailNum; |
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} |
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public void setTimeOut(long timeOut) { |
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this.mTimeOut = timeOut; |
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} |
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} |
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package com.arialyy.downloadutil.core; |
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import android.os.Handler; |
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import android.os.Message; |
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import android.util.Log; |
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import com.arialyy.downloadutil.core.inf.IDownloader; |
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import com.arialyy.downloadutil.core.inf.ITask; |
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import com.arialyy.downloadutil.core.pool.CachePool; |
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import com.arialyy.downloadutil.core.pool.ExecutePool; |
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|
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/** |
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* Created by lyy on 2016/8/16. |
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* 任务下载器,提供抽象的方法供具体的实现类操作 |
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*/ |
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public abstract class IDownloadTarget implements IDownloader, ITask { |
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/** |
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* 任务开始 |
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*/ |
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public static final int START = 1; |
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/** |
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* 任务停止 |
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*/ |
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public static final int STOP = 2; |
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/** |
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* 任务失败 |
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*/ |
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public static final int FAIL = 3; |
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/** |
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* 任务取消 |
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*/ |
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public static final int CANCEL = 4; |
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/** |
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* 任务完成 |
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*/ |
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public static final int COMPLETE = 5; |
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protected CachePool mCachePool = CachePool.getInstance(); |
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protected ExecutePool mExecutePool = ExecutePool.getInstance(); |
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protected AutoTaskHandler mTaskHandler; |
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/** |
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* 下载失败次数 |
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*/ |
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protected int mFailNum = 10; |
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|
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/** |
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* 超时时间 |
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*/ |
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protected long mTimeOut = 10000; |
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|
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/** |
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* 下载器任务监听 |
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*/ |
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protected OnTargetListener mTargetListener; |
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/** |
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* Target处理任务监听 |
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*/ |
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public interface OnTargetListener { |
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/** |
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* 任务开始 |
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*/ |
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public void onTaskStart(Task task); |
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/** |
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* 任务停止 |
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*/ |
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public void onTaskStop(Task task); |
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/** |
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* 任务取消 |
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*/ |
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public void onTaskCancel(Task task); |
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/** |
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* 任务下载失败 |
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*/ |
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public void onTaskFail(Task task); |
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/** |
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* 任务完成 |
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*/ |
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public void onTaskComplete(Task task); |
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} |
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protected IDownloadTarget() { |
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mTaskHandler = new AutoTaskHandler(this); |
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} |
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/** |
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* 设置下载器监听 |
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* |
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* @param targetListener {@link OnTargetListener} |
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*/ |
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public void setOnTargetListener(OnTargetListener targetListener) { |
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this.mTargetListener = targetListener; |
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} |
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/** |
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* 获取任务执行池 |
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*/ |
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public ExecutePool getExecutePool() { |
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return mExecutePool; |
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} |
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/** |
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* 获取当前运行的任务数 |
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* |
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* @return 当前正在执行的任务数 |
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*/ |
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public int getCurrentTaskNum() { |
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return mExecutePool.size(); |
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} |
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/** |
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* 获取缓存任务数 |
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* |
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* @return 获取缓存的任务数 |
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*/ |
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public int getCacheTaskNum() { |
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return mCachePool.size(); |
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} |
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public void setFailNum(int mFailNum) { |
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this.mFailNum = mFailNum; |
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} |
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public void setTimeOut(long timeOut) { |
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this.mTimeOut = timeOut; |
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} |
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/** |
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* 自动处理任务停止,下载失败,取消下载,自动下载下一个任务的操作 |
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*/ |
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private static class AutoTaskHandler extends Handler { |
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private static final String TAG = "AutoTaskHandler"; |
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IDownloadTarget target; |
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public AutoTaskHandler(IDownloadTarget target) { |
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this.target = target; |
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} |
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@Override public void handleMessage(Message msg) { |
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super.handleMessage(msg); |
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DownloadEntity entity = (DownloadEntity) msg.obj; |
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if (entity == null) { |
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Log.e(TAG, "请传入下载实体DownloadEntity"); |
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return; |
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} |
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switch (msg.what) { |
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case STOP: |
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case CANCEL: |
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if (target.mExecutePool.size() != ExecutePool.SIZE) { |
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startNextTask(entity); |
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} |
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break; |
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case COMPLETE: |
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startNextTask(entity); |
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break; |
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case FAIL: |
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handleFailTask(entity); |
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break; |
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} |
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callback(msg.what, entity); |
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} |
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/** |
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* 回调 |
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* |
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* @param state 状态 |
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* @param entity 下载实体 |
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*/ |
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private void callback(int state, DownloadEntity entity) { |
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if (target.mTargetListener != null) { |
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Task task = target.getTask(entity); |
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switch (state) { |
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case START: |
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target.mTargetListener.onTaskStart(task); |
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break; |
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case STOP: |
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target.mTargetListener.onTaskStop(task); |
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break; |
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case CANCEL: |
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target.mTargetListener.onTaskCancel(task); |
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break; |
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case COMPLETE: |
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target.mTargetListener.onTaskComplete(task); |
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break; |
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case FAIL: |
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target.mTargetListener.onTaskFail(task); |
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break; |
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} |
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} |
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} |
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/** |
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* 处理下载任务下载失败的情形 |
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* |
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* @param entity 失败实体 |
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*/ |
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private void handleFailTask(DownloadEntity entity) { |
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if (entity.getFailNum() <= target.mFailNum) { |
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Task task = target.getTask(entity); |
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target.reTryStart(task); |
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} else { |
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startNextTask(entity); |
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} |
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} |
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/** |
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* 启动下一个任务,条件:任务停止,取消下载,任务完成 |
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* |
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* @param entity 通过Handler传递的下载实体 |
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*/ |
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private void startNextTask(DownloadEntity entity) { |
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target.removeTask(entity); |
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Task newTask = target.getNextTask(); |
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if (newTask == null) { |
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Log.w(TAG, "没有下一任务"); |
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return; |
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} |
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if (newTask.getDownloadEntity().getState() == DownloadEntity.STATE_WAIT) { |
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target.startTask(newTask); |
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} |
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} |
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} |
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} |
@ -1,24 +0,0 @@ |
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package com.arialyy.downloadutil.core.command; |
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import android.content.Context; |
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import com.arialyy.downloadutil.core.DownloadEntity; |
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/** |
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* Created by lyy on 2016/9/20. |
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* 获取下载状态的命令 |
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*/ |
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class StateCmd extends IDownloadCmd { |
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/** |
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* @param context context |
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* @param entity 下载实体 |
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*/ |
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StateCmd(Context context, DownloadEntity entity) { |
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super(context, entity); |
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} |
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@Override public void executeComment() { |
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target.getTaskState(mEntity); |
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} |
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} |
@ -0,0 +1,25 @@ |
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package com.arialyy.downloadutil.core.inf; |
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import android.os.Handler; |
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import com.arialyy.downloadutil.core.DownloadEntity; |
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/** |
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* Created by “AriaLyy@outlook.com” on 2016/11/2. |
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* 下载调度器接口 |
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*/ |
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public interface IDownloadSchedulers extends Handler.Callback { |
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|
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/** |
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* 处理下载任务下载失败的情形 |
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* |
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* @param entity 下载实体 |
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*/ |
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public void handleFailTask(DownloadEntity entity); |
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|
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/** |
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* 启动下一个任务,条件:任务停止,取消下载,任务完成 |
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* |
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* @param entity 通过Handler传递的下载实体 |
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*/ |
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public void startNextTask(DownloadEntity entity); |
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} |
@ -0,0 +1,10 @@ |
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package com.arialyy.downloadutil.help; |
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/** |
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* Created by “AriaLyy@outlook.com” on 2016/11/2. |
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*/ |
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public class LockHelp { |
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public static final Object LOCK = new Object(); |
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} |
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