【发布时间】:2011-07-01 07:58:15
【问题描述】:
在我的项目中,我有两个文件 .txt(在 Resources 文件夹中),如何将它们复制到文档文件夹中?
【问题讨论】:
在我的项目中,我有两个文件 .txt(在 Resources 文件夹中),如何将它们复制到文档文件夹中?
【问题讨论】:
将txtFile 从资源复制到文档(如果不存在)。
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *txtPath = [documentsDirectory stringByAppendingPathComponent:@"txtFile.txt"];
if ([fileManager fileExistsAtPath:txtPath] == NO) {
NSString *resourcePath = [[NSBundle mainBundle] pathForResource:@"txtFile" ofType:@"txt"];
[fileManager copyItemAtPath:resourcePath toPath:txtPath error:&error];
}
如果你想每次都覆盖,那么试试这个:
if ([fileManager fileExistsAtPath:txtPath] == YES) {
[fileManager removeItemAtPath:txtPath error:&error];
}
NSString *resourcePath = [[NSBundle mainBundle] pathForResource:@"txtFile" ofType:@"txt"];
[fileManager copyItemAtPath:resourcePath toPath:txtPath error:&error];
【讨论】:
文件的代码是否存在,如果不存在则复制。
func CheckFileisExistOrNot(strPath:String) {
let filemgr = FileManager.default
if !filemgr.fileExists(atPath: strPath) {
let resorcePath = Bundle.main.path(forResource: "\(Global.g_databaseName)", ofType: ".db")
do {
try filemgr.copyItem(atPath: resorcePath!, toPath: strPath)
}catch{
print("Error for file write")
}
}
}
【讨论】:
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [[paths objectAtIndex:0]stringByAppendingString:@"csvfile"];
NSString *txtPath = [documentsDirectory stringByAppendingPathComponent:@"sample.csv"];
if ([fileManager fileExistsAtPath:txtPath] == NO) {
NSString *resourcePath = [[NSBundle mainBundle] pathForResource:@"sample" ofType:@".csv"];
[fileManager copyItemAtPath:resourcePath toPath:txtPath error:&error];
【讨论】: