使用Cordova Hybrid应用程序将文件复制到路径

Question

Context : I am developing hybrid app with Cordova 6 and SAPUI5 Framework (for now only need to worry about Android).

What I want : Copy/move a file to a path fast. Maybe getting a FileEntry from a File/Blob object from a FileUploader on sapui5.

Input : FileUploader

Output : File Object So I get the file when I select it by doing the following:

sap.ui.getCore().byId('file-uploader-id').oFileUpload.files[0];

So then I have to copy it to another location: " cordova.file .externalCacheDirectory". But FileUploader doesn't provide a fullpath value for the selected item ( for security reasons ).

What I tried :

        var sPath = URL.createObjectURL(oFile);
        var pCopyFrom = new Promise((resolve, reject) => {
            window.resolveLocalFileSystemURL(sPath, resolve, reject);
        });

        var pCopyTo = new Promise((resolve, reject) => {
            var sExternalCachePath = cordova.file.externalCacheDirectory;
            window.resolveLocalFileSystemURL(sMediaPath, resolve, reject);
        });

        Promise.all([pCopyFrom, pCopyTo]).then(aValues => {
            aValues[0].moveTo(aValues[1], aValues[0].name, cbSuccess, cbError);
        });

Result :

Solution seems to don't work because the generated path is not available (error code 5), this path is not valid for use it like this.

Possible solutions :

• Extract the path of the file object by another way.
• Use another input that can provide this path (until now I did not find any).
• Find the path of the file using the filename or maybe the size or something recursively at the phone.

What is the current solution (But really slow) :

Write the file with FileWritter . If I have the path and I use the above code to a video (of 5 seconds of duration) it spends less than 1 second (thanks to FileEntry ) to copy/move it (using a camera capture or video capture with cordova-plugin-media-capture that gives the path of the file), while using FileWritter method it spends like 10 seconds to write it.

Thank you by reading. I will upload any new as I have it.

Answer 1

The final solution is the second option that I said on the question, changing the input method:

Instead of using the FileUploader as input, use a plugin called File Selector .

You can get the FileName, URI , Mime type and the file extension

So now I can move/copy the file faster with the FileEntry .

Anyway I will update this answer if I find something relevant to this theme.

Thanks.