我读了很多帖子,但没有得到最终答案。
从这里的代码开始link,我将文件下载到应用程序中。无论如何,我想在“下载”文件夹中看到它。
我使用的是 Android,但显然我想要一个也适用于 iOS 的解决方案。
EDIT
如果您已经知道文件的路径,则可以移动它:
var storageLocation = "";
console.log(device.platform);
switch (device.platform) {
case "Android":
storageLocation = 'file:///storage/emulated/0/';
break;
case "iOS":
storageLocation = cordova.file.documentsDirectory;
break;
}
var fileUri = "file:///data/user/0/com.arsdigitalia.myapp/files/files/MyApp/test.pdf"
function moveFile(fileUri) {
window.resolveLocalFileSystemURL(
fileUri,
function(fileEntry){
var parentEntry = storageLocation + "Download";
// move the file to a new directory and rename it
fileEntry.moveTo(parentEntry, "newFile.pdf", success, fail);
},
errorCallback);
}
Original
这是我用来完成此任务的一段示例代码。它在 Android 上效果最好,iOS 因应用程序沙箱而略有不同,因此您需要自己处理检索文件。我还使用 Cordova 设备插件来确定应用程序在什么设备上运行,然后我可以更改存储路径以适应:
var storageLocation = "";
console.log(device.platform);
switch (device.platform) {
case "Android":
storageLocation = 'file:///storage/emulated/0/';
break;
case "iOS":
storageLocation = cordova.file.documentsDirectory;
break;
}
window.resolveLocalFileSystemURL(storageLocation,
function (fileSystem) {
fileSystem.getDirectory('Download', {
create: true,
exclusive: false
},
function (directory) {
//You need to put the name you would like to use for the file here.
directory.getFile("YOUR_FILE_NAME", {
create: true,
exclusive: false
},
function (fileEntry) {
fileEntry.createWriter(function (writer) {
writer.onwriteend = function () {
console.log("File written to downloads")
};
writer.seek(0);
writer.write(YOUR_FILE_HERE); //You need to put the file, blob or base64 representation here.
}, errorCallback);
}, errorCallback);
}, errorCallback);
}, errorCallback);
var errorCallback = function(e) {
console.log("Error: " + e)
}
然后要从目录中检索文件列表,您可以使用:
window.resolveLocalFileSystemURL(storageLocation,
function (fileSystem) {
fileSystem.getDirectory('Download', {
create: true,
exclusive: false
},
function (directory) {
var reader = directory.createReader();
reader.readEntries(function (files) {
if (files.length == 0) {
console.log("No files found in downloads folder.")
} else {
$.each(files, function (i, v) {
console.log("File Name: " + files[i].name;)
});
}
}, getFilesFail);
}, getFilesFail);
}, getFilesFail);
var getFilesFail = function(e) {
console.log("Error: " + e);
}
要安装设备插件,请使用以下命令:
cordova plugin add cordova-plugin-device
文档在这里:
https://cordova.apache.org/docs/en/latest/reference/cordova-plugin-device/
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