Programmatically Transfer File Android to Gear 2

由 Ashley Hill

2014年 05月 19日 06:43 English(英语) 7 回复

Please could you provide a simple sample application or code which demonstrates sending a large file (e.g. PNG file) from the Android side AccessoryProviderService to the Tizen Wearable Gear 2's canvas for display?

So far I have been able to use BASE64 encoded string of data and reconstruct it on the Gear 2 canvas, but it fails when the file is larger than 1MB due to a size restriction on SASocket.send(bytes)

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Thijs Mergaert

2014年 05月 19日 07:42

Hi Ashley,

Although I don't have a code example at hand right now, I'd suggest you take a look at http://img-developer.samsung.com/onlinedocs/sms/index.html, specifically at the SAft, SAFileTransfer and SAFileTransfer.EventListener classes.

Another option is to split up your BASE64 encoded string in chunks, send each chunk separately, and then reconstruct the image on the receiver side.

Sincerely yours,

Thijs

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Ashley Hill Thijs Mergaert

2014年 05月 19日 08:58

Thijs,

Thank you for your kind reply. I have a grasp of the SaFileTransfer from the sample, but I cannot find any documentation for the Wearable side i.e. sap.js please could you kindly try and publish a sample application for this.

Thanks
Ashley

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Thijs Mergaert

2014年 05月 19日 09:20

// I've skipped the definition of the onsuccess and onerror callbacks here
var agent = webapis.sa.requestSAAgent(onsuccess, onerror);
var filetransfer = agent.getSAFileTransfer();

var newFilePath = "file:///opt/usr/media/Downloads/ReceivedImage.jpg";

 var callback = {
     onreceive : function(transferId, fileName){
         try {
             filetransfer.receiveFile(transferId, newFilePath);
         } catch(e) {
             console.log("Error Exception, error name : " + e.name + ", error message : " + e.message);
         }
     },
     onprogress : function(transferId, progress){
         console.log("onprogress transferId : " + transferId + ", progress : " + progress);
     },
     oncomplete : function(transferId, localPath){
         console.log("File transfer complete.  transferId : " + transferId);
     },
     onerror : function(errorCode, transferId){
         console.log("FileReceiveError  transferId : " + transferId + " code : " + errorCode);
     }
 };

 try {
     filetransfer.setFileReceiveListener(callback);
 } catch(e) {
     console.log("Error Exception, error name : " + e.name + ", error message : " + e.message);
 }

The above is from the Help Contents in the Wearable SDK IDE. Hope that helps.