通过bindService方法来调用服务final Down down = data;

viewHolder.videoActionBtn.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

if(bEditMode) {

// 处于编辑模式，点击删除

deleteDown(down);

} else {

// 处于播放模式，点击播放

VideoItemData video = (new Gson()).fromJson(down.getData(),

VideoItemData.class);

if(video != null) {

video.setMp4Url(down.getSavaPath());

VideoUtils.playVideo(context, video);

}

}

}

});

调用Service来删除Down。在ServiceConnection对象的onServiceConnected方法中，执行删除操作之后，调用unbindService方法来解绑定操作。

/**

* 删除下载的记录和内容。

*

* @param down

*/

private void deleteDown(final Down down){

Intent intent = new Intent(context, DownService.class);

ServiceConnection conn = new ServiceConnection() {

@Override

public void onServiceConnected(ComponentName name, IBinder service) {

((DownBinder)service).deleteDown(down, true);

context.unbindService(this);

}

@Override

public void onServiceDisconnected(ComponentName name) {

}

};

context.bindService(intent, conn, Context.BIND_AUTO_CREATE);

}

在Service类中定义Binder的子类。public class DownBinder extends Binder implements IDown {

@Override

public Down downVideo(VideoItemData video) {

if (!NetUtil.hasNetwork(context)) {

UIUtils.showToast(context, "网络不给力");

return null;

}

if (!SettingSharedPreference.getInstance().getCacheWith2G3G() && !NetUtil.hasWifiNetWork(context)) {

UIUtils.showToast(context, "已经禁止2G/3G网络下载视频");

return null;

}

synchronized (downList) {

for (Down down : downList) {

// 如果已经在下载列表中，直接返回down对象。

if (down.getUrl().equals(video.getMp4Url())) {

UIUtils.showToast(context, "已经在下载列表中");

return down;

}

}

}

// 如果是一个新的下载，发送消息开始一个新的下载。

Message.obtain(handler, DOWN_URL, video).sendToTarget();

return null;

}

@Override

public List getAllDown() {

return getDownList();

}

@Override

public void pauseDown(Down down) {

downHandler.removeMessages(START_DOWN);

down = getExistDown(down);

downHandler.sendMessage(downHandler.obtainMessage(PAUSE_DOWN, down));

}

@Override

public void startDown(Down down) {

downHandler.removeMessages(PAUSE_DOWN);

down = getExistDown(down);

downHandler.sendMessage(downHandler.obtainMessage(START_DOWN, down));

}

/**

* 取出对应的Down 从downList中取出的Down都赋值了DownTask

*

* @param down

* @return

*/

private Down getExistDown(Down down) {

for (Down d : downList) {

if (down.getUrl().equals(d.getUrl())) {

return d;

}

}

return down;

}

@Override

public void deleteDown(Down down, boolean deleteFile) {

downHandler.removeMessages(START_DOWN);

downHandler.removeMessages(PAUSE_DOWN);

down = getExistDown(down);

downHandler.obtainMessage(DELETE_DOWN, (deleteFile ? 1 : 0), 0, down).sendToTarget();

}

@Override

public void clearDown(boolean deleteFile) {

downHandler.removeMessages(START_DOWN);

downHandler.removeMessages(PAUSE_DOWN);

downHandler.obtainMessage(CLEAR_DOWN, deleteFile).sendToTarget();

}

@Override

public void reStartDown(Down down) {

down = getExistDown(down);

downHandler.obtainMessage(RESTART_DOWN, down).sendToTarget();

}

}

在onCreate方法中创建DownBinder实例。downBinder = new DownBinder();

在onBind方法中返回DownBinder实例。

@Override

public IBinder onBind(Intent intent) {

return downBinder;

}