IOS文件操作

1.从cache文件夹拷贝到document文件夹
[cpp]  
NSString *sqlFile = @"test.zip";  
 NSArray *cachePath= NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);  
 NSString *cacheDir = [cachePath objectAtIndex:0];  
 NSString *databasePath = [cacheDir stringByAppendingPathComponent:sqlFile];  
 NSLog(databasePath);  
   
 NSFileManager *fileManager = [NSFileManager defaultManager];  
 // Copy the database sql file from the resourcepath to the documentpath  
 if ([fileManager fileExistsAtPath:databasePath])  
 {  
     //NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:sqlFile];  
     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);  
     NSString *documentpath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;  
     NSString* databasePathFromApp = [documentpath stringByAppendingString:@"/test.zip"] ;  
     NSLog(databasePathFromApp);  
     NSError *error;  
     [fileManager copyItemAtPath:databasePath toPath:databasePathFromApp error:&error];  
     //        if (error != nil) {  
     //            NSLog(@"[Database:Error] %@", error);  
     //        }  
 }  
 
 
2.从document文件夹拷贝到cache文件夹
[cpp] 
NSString *sqlFile = @"qxd.db";    
    NSArray *cachePath= NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);    
    NSString *cacheDir = [cachePath objectAtIndex:0];    
    NSString *databasePath = [cacheDir stringByAppendingPathComponent:sqlFile];    
        
        
    NSFileManager *fileManager = [NSFileManager defaultManager];    
    // Copy the database sql file from the resourcepath to the documentpath    
    if (![fileManager fileExistsAtPath:databasePath]) {    
        NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:sqlFile];    
        NSError *error;    
        [fileManager copyItemAtPath:databasePathFromApp toPath:databasePath error:&error];    
//        if (error != nil) {    
//            NSLog(@"[Database:Error] %@", error);    
//        }    
    }    
 

补充：移动开发 , IOS ,

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