在Cordova中创建外部SDCard上的目录

Question

我正在尝试在外部SDCard上创建一个目录。我能够在内部SD上这样做。下面的代码将返回错误代码12.我做错了什么？

window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, function(fs) {
            console.log("Root = " + fs.root.fullPath);
            fs.root.fullPath = cordova.file.externalRootDirectory;
            fs.root.getDirectory("newDir", {create: true, exclusive: false},
                function(dirEntry) {
                    dirEntry.getFile("newFile.txt", {create: true, exclusive: false}, function (fileEntry) {
                        console.log("File = " + fileEntry.fullPath);
                    }, function (error) {
                        alert(error.code);
                    });
                }, function (error) {
                   alert(error.code);
                });
           }, function (error) {
                   alert(error.code);
           });

Answer 1

尝试使用： window.resolveLocalFileSystemURL 这很好用

            window.resolveLocalFileSystemURL(cordova.file.externalRootDirectory, function(fileSystem) {
            console.log("Root = " + cordova.file.externalRootDirectory);
            fileSystem.getDirectory("newDir", {create: true, exclusive: false},

            function(dirEntry) {
                dirEntry.getFile("newFile.txt", {create: true, exclusive: false}, function (fileEntry) {
                    console.log("File = " + fileEntry.fullPath);
                }, function (error) {
                    alert(error.code);
                });
            }, function (error) {
               alert(error.code);
            });
       }, function (error) {
               alert(error.code);
       });