Objective C encapsulates an example of a string storage operation
- 2020-05-06 11:42:41
- OfStack
Es2en-C simply encapsulates string storage operations, eliminating the middle sandbox handling
/ storage publickey and sessionID -- writeContent : nil - Just take out the data, other - Modify the original content and extract
+(NSString *)storeFile:(NSString *)fileName content:(NSString *)writeContent
{
NSString *pathDocuments=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *createPath=[NSString stringWithFormat:@"%@/%@",pathDocuments,fileName];// Complete the path with the filename
NSError *ReadFileError;
NSString *readContent ;
NSData *data ;
if ([[NSFileManager defaultManager] fileExistsAtPath:createPath])// Determines if the file already exists
{
if (nil == writeContent) {
readContent = [NSString stringWithContentsOfFile:createPath encoding:NSUTF8StringEncoding error:&ReadFileError;];
}else{
data = [writeContent dataUsingEncoding:NSUTF8StringEncoding];// The initial data for the new file
[[NSFileManager defaultManager] createFileAtPath:createPath contents:data attributes:nil];// Create a file
readContent = [NSString stringWithContentsOfFile:createPath encoding:NSUTF8StringEncoding error:&ReadFileError;];
}
}
else
{
if (nil == writeContent) {
return nil;
}else{
data = [writeContent dataUsingEncoding:NSUTF8StringEncoding];// The initial data for the new file
[[NSFileManager defaultManager] createFileAtPath:createPath contents:data attributes:nil];// Create a file
readContent = [NSString stringWithContentsOfFile:createPath encoding:NSUTF8StringEncoding error:&ReadFileError;];
}
}
return readContent;
}
+ ( NSArray * )storeArryFile:(NSString *)fileName content:( NSArray *)writeArry
{
// steps
// save Will: The array into the The dictionary
// Pick up: Take the array from the dictionary
if ( writeArry == nil)// Read the file
{
NSString *storeStr = [FNProRequest storeFile:fileName content:nil];
NSDictionary *dic = (NSDictionary *)[storeStr JSONValue];
NSLog(@"%@", dic);
return (NSArray *)[dic objectForKey:fileName];
}
else
{
NSArray *objectsArry = [[NSArray alloc]initWithObjects:writeArry,nil ];
NSArray *keysArry = [[NSArray alloc]initWithObjects:fileName,nil ];
NSDictionary *dic = [[NSDictionary alloc]initWithObjects:objectsArry forKeys:keysArry];
NSString *storeStr = [dic JSONRepresentation];
[self storeFile:fileName content:storeStr];
[objectsArry release];
[keysArry release];
[dic release];
}
return nil;
}