根据url地址下载文件到本地，返回本地文件地址

妖狐艹你老母 2023-10-18 15:27 93阅读 0赞

-(NSString*)DownloadTextFile:(NSString*)fileUrl   fileName:(NSString*)_fileName
    {
        NSString *sandboxPath = NSHomeDirectory();
        NSString *documentPath = [sandboxPath  stringByAppendingPathComponent:@"Documents"];//将Documents添加到sandbox路径上
        NSString *FileName=[documentPath stringByAppendingPathComponent:_fileName];//fileName就是保存文件的文件名
        NSFileManager *fileManager = [NSFileManager defaultManager];
        
        if ([fileManager fileExistsAtPath:FileName])
        {
            return FileName;
        }else
        {
            NSURL *url = [NSURL URLWithString:fileUrl];
            NSLog(fileUrl);
            NSData *data = [NSData dataWithContentsOfURL:url];
           [data writeToFile:FileName atomically:YES];//将NSData类型对象data写入文件，文件名为FileName
        }
        return FileName;
    }

/打开本地文件，获取文件路径

NSString *FileName = @"myWebURL.plist";
        NSArray *cachePath= NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
        NSString *cacheDir = [cachePath objectAtIndex:0];
        NSString *FilePath = [cacheDir stringByAppendingPathComponent:FileName];
        
        
        NSFileManager *fileManager = [NSFileManager defaultManager];
        // Copy the  file from the resourcepath to the documentpath
        if (![fileManager fileExistsAtPath:FilePath])
        {
            NSString *filePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:FileName];
            NSError *error;
            [fileManager copyItemAtPath:filePathFromApp toPath:FilePath error:&error];
        }
        NSLog(FilePath);