Clear cache for iOS and cache for ios

Clear cache for iOS and cache for ios

// Click the clear cache button

-(Void) putBufferBtnClicked :( UIButton *) btn {

CGFloat size = [self folderSizeAtPath: NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES ). lastObject] + [self folderSizeAtPath: NSSearchPathForDirectoriesInDomains (NSLibraryDirectory, NSUserDomainMask, YES ). lastObject] + [self folderSizeAtPath: NSTemporaryDirectory ()];

NSString * message = size> 1? [NSString stringWithFormat: @ "cache %. 2fM, delete cache", size]: [NSString stringWithFormat: @ "cache %. 2fK, delete cache", size * 1024.0];

UIAlertController * alert = [UIAlertController alertControllerWithTitle: nil message: message preferredStyle :( UIAlertControllerStyleAlert)];

UIAlertAction * action = [UIAlertAction actionWithTitle: @ "OK" style :( UIAlertActionStyleDefault) handler: ^ (UIAlertAction * action) {[self cleanCaches];}];

UIAlertAction * cancel = [UIAlertAction actionWithTitle: @ "cancel" style :( UIAlertActionStyleCancel) handler: nil];

[Alert addAction: action];

[Alert addAction: cancel];

[Self showDetailViewController: alert sender: nil];

}

 

// Calculate the directory size

-(CGFloat) folderSizeAtPath :( NSString *) path {

// Use NSFileManager to manage files

NSFileManager * manager = [NSFileManager defamanager manager];

CGFloat size = 0;

If ([manager fileExistsAtPath: path]) {

// Obtain the file in the directory and calculate its size

NSArray * childrenFile = [manager subpathsAtPath: path];

For (NSString * fileName in childrenFile ){

NSString * absolutePath = [path stringByAppendingPathComponent: fileName];

Size + = [manager attributesOfItemAtPath: absolutePath error: nil]. fileSize;

}

// Convert the size to M

Return size/1024.0/1024.0;

}

Return 0;

}

// Delete an object based on the path

-(Void) cleanCaches :( NSString *) path {

// Use NSFileManager to manage files

NSFileManager * fileManager = [NSFileManager defaultManager];

If ([fileManager fileExistsAtPath: path]) {

// Get the file name under this path

NSArray * childrenFiles = [fileManager subpathsAtPath: path];

For (NSString * fileName in childrenFiles ){

// Splicing path

NSString * absolutePath = [path stringByAppendingPathComponent: fileName];

// Delete the object

[FileManager removeItemAtPath: absolutePath error: nil];

}

}

}

// Example of calculating the file size in the sandbox and deleting the file in the sandbox:

-(Void) cleanCaches {

[Self cleanCaches: NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES). firstObject];

[Self cleanCaches: NSSearchPathForDirectoriesInDomains (NSLibraryDirectory, NSUserDomainMask, YES). firstObject];

[Self cleanCaches: NSTemporaryDirectory ()];

}