根据文档,应该可以使用setSpaces(“appDataFolder”)注册更改我的应用程序的app文件夹的通知通道.
但是,我在设置频道时只收到初始同步通知,但在我更改app文件夹中的内容时没有更改通知.
如果我使用setSpaces(“驱动器”)或完全省略setSpaces()并在常规驱动器空间中更改某些内容,我会收到更改通知.
我没有找到关于在app文件夹中查看更改的任何内容,所以我希望有人可以帮助我.
这就是我设置频道的方式,其中mDrive是com.Google.API.services.drive.Drive的完全初始化和授权的实例.
channelID = UUID.randomUUID().toString();channelExpiration = System.currentTimeMillis() + CHANNEL_liVETIME_MILliS;Channel channel = new Channel();channel.setType("web_hook");channel.setID(channelID);channel.setAddress(DRIVE_API_CALLBACK_RECEIVER_URL);channel.setToken("...");channel.setExpiration(channelExpiration);Channel result = mDrive.changes().watch(channel).setSpaces("appDataFolder").execute();
解决方法:
你有没有设置这个范围?确保您有足够广泛的范围来包含’appDataFolder’.我的意思是你应该能够从这里获得一些结果(从here开始):
/** * Print Metadata for the Application Data folder. * * @param service Drive API service instance. */private static voID printApplicationDataFolderMetadata(Drive service) { try { file file = service.files().get("appfolder").execute(); System.out.println("ID: " + file.getID()); System.out.println("Title: " + file.getTitle()); } catch (IOException e) { System.out.println("An error occured: " + e); }}
我认为以上可能是你的问题.无论您设置范围,请确保包含drive.appfolder或更正式
https://www.GoogleAPIs.com/auth/drive.appfolder
此外,你在检查结果是否为空?你真的应该将Channel result = …行放在try {} catch(IOExeption e){}中,如果在这个例子中有一个(从here开始),则打印错误.
/** * Watch for all changes to a user's Drive. * * @param service Drive API service instance. * @param channelID Unique string that IDentifIEs this channel. * @param channelType Type of delivery mechanism used for this channel. * @param channelAddress Address where notifications are delivered. * @return The created channel if successful, {@code null} otherwise. */ private static Channel watchChange(Drive service, String channelID, String channelType, String channelAddress) { Channel channel = new Channel(); channel.setID(channelID); channel.setType(channelType); channel.setAddress(channelAddress); try { return service.changes().watch(channel).execute(); } catch (IOException e) { e.printstacktrace(); // ADD A LOG OR PRINT STATEMENT HERE Log.e("DRIVEAPI", "Error: " + e.toString()) } return null; }
您的代码应该如下所示:
channelID = UUID.randomUUID().toString();channelExpiration = System.currentTimeMillis() + CHANNEL_liVETIME_MILliS;Channel channel = new Channel();channel.setType("web_hook");channel.setID(channelID);channel.setAddress(DRIVE_API_CALLBACK_RECEIVER_URL);channel.setToken("...");channel.setExpiration(channelExpiration);try { Channel result = mDrive.changes().watch(channel).setSpaces("appDataFolder").execute(); if(result != null) { // do whatever you want with result Channel } else { Log.e("DRIVEAPI", "Error: result is null for some reason!"); }} catch (IOException e) { e.printstacktrace() Log.e("DRIVEAPI", "Error: " + e.toString());}
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