在我们使用cordova开发的应用中,我们需要删除在contentsync plugin的帮助下下载的文件。
这是我使用file plugin实现的。
function clearCache() {
localStorage.clear();
// remove the stuff from the file system as well
deleteAllFilesInPath(cordova.file.dataDirectory);
deleteAllFilesInPath(cordova.file.cacheDirectory);
deleteAllFilesInPath(cordova.file.externalDataDirectory);
deleteAllFilesInPath(cordova.file.externalCacheDirectory);
}
function deleteAllFilesInPath(path) {
if (!path) { return; }
window.resolveLocalFileSystemURL(path, function (entry) {
if (entry.isDirectory) {
var dirReader = entry.createReader();
dirReader.readEntries(function(entries) {
console.log(entries);
for (var i in entries) {
deleteFileOrDirEntry(entries[i]);
}
})
}
})
}
function deleteLocalPath(path) {
window.resolveLocalFileSystemURL(path,
deleteFileOrDirEntry,
function (error) {
log.error("failed to access ", path, " error: ", JSON.stringify(error));
});
}
function deleteFileOrDirEntry(entry) {
if (entry.isDirectory) {
entry.removeRecursively(function (code) {
log.info("deleted dir ", entry.fullPath, " ", code);
},
function (error) {
log.error("failed to remove dir ", entry.fullPath, " error: ", JSON.stringify(error))
});
} else {
entry.remove(function (code) {
log.info("deleted file ", entry.fullPath, " ", code);
},
function (error) {
log.error("failed to remove file ", entry.fullPath, " error: ", JSON.stringify(error))
});
}
}
这在Android上效果很好。在iOS上,我遇到一个问题,当我再次同步内容时,它会失败并显示错误:
Task ... completed with error: The operation couldn't be completed. No such file or directory
Error downloading type: 2, responseCode: 200
但是当我退出应用程序并重新启动时,它可以工作。
我没有找到直接在同步插件中删除文件的API。 我是否需要重置插件/通知已删除文件?
答案 0 :(得分:0)
嗯,似乎在iOS上,如果还清除了缓存目录,插件就会感到困惑。如果我愿意的话:
function clearCache() {
localStorage.clear();
// remove the stuff from the file system as well
deleteAllFilesInPath(cordova.file.dataDirectory);
// deleteAllFilesInPath(cordova.file.cacheDirectory);
deleteAllFilesInPath(cordova.file.externalDataDirectory);
// deleteAllFilesInPath(cordova.file.externalCacheDirectory);
}
有效。
(问题仍然存在,即同步插件是否可以使用这种删除文件的方式,或者是否/应该为此使用一个API。)