不想裝 Imagemagick 可以直接試試輕巧的 gif2apng。
雖然官網有提示如何批次轉換，但卻無法成功。以下提供另一個方式。
| for img in *.gif; do |
參考
一年一度諾貝爾講座
1 週前
【Mac】gif2apng
【iOS】Animations
- AnimationCurve
- UIViewAnimationCurveEaseIn
- UIViewAnimationCurveEaseInOut
- UIViewAnimationCurveEaseOut
- UIViewAnimationCurveLinear - AnimationTransition
- UIViewAnimationTransitionCurlUp
- UIViewAnimationTransitionFlipFromRight
- UIViewAnimationTransitionFlipFromLeft - 基本框架
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.5];
[UIView setAnimationDelay:0.0];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp
forView:self.view cache:YES];// Action
[UIView commitAnimations];
- 框架範例二
CATransition *animation = [CATransition animation];
[animation setDuration:0.5];
[animation setType:kCATransitionPush];
[animation setSubtype:kCATransitionFromRight];
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[self.view.layer addAnimation:animation forKey:nil];//do something here
[CATransaction commit];
【iOS】Keyboard
- 讓 TextField 所帶出的 Keyboard 消失
- (IBAction) textFieldReturn:(id)textField
{
[textField resignFirstResponder];
}
【iOS】Plist 存取
- 參考 Property List Tutorial – using plist to store user data, 以下截取重要部分.
- 建立 Data.plist 放在 Resources 底下
- 宣告
@interface PlistTutorialViewController : UIViewController
{
IBOutlet UITextField *nameEntered;
IBOutlet UITextField *homePhone;
IBOutlet UITextField *workPhone;
IBOutlet UITextField *cellPhone;
NSString *personName;
NSMutableArray *phoneNumbers;
}@property (nonatomic, retain) UITextField *nameEntered;
@property (nonatomic, retain) UITextField *homePhone;
@property (nonatomic, retain) UITextField *workPhone;
@property (nonatomic, retain) UITextField *cellPhone;@property (nonatomic, retain) NSString *personName;
@property (nonatomic, retain) NSMutableArray *phoneNumbers;- (IBAction) saveData;
- (IBAction) textFieldReturn:(id)textField; - 讀取
- (void)viewDidLoad
{
[super viewDidLoad];
// Data.plist code
// get paths from root direcory
NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
// get documents path
NSString *documentsPath = [paths objectAtIndex:0];
// get the path to our Data/plist file
NSString *plistPath = [documentsPath stringByAppendingPathComponent:@"Data.plist"];
// check to see if Data.plist exists in documents
if (![[NSFileManager defaultManager] fileExistsAtPath:plistPath])
{
// if not in documents, get property list from main bundle
plistPath = [[NSBundle mainBundle] pathForResource:@"Data" ofType:@"plist"];
}
// read property list into memory as an NSData object
NSData *plistXML = [[NSFileManager defaultManager] contentsAtPath:plistPath];
NSString *errorDesc = nil;
NSPropertyListFormat format;
// convert static property liost into dictionary object
NSDictionary *temp = (NSDictionary *)[NSPropertyListSerialization
propertyListFromData:plistXML
mutabilityOption:NSPropertyListMutableContainersAndLeaves
format:&format
errorDescription:&errorDesc];
if (!temp)
{
NSLog(@"Error reading plist: %@, format: %d", errorDesc, format);
}
// assign values
self.personName = [temp objectForKey:@"Name"];
self.phoneNumbers = [NSMutableArray arrayWithArray:[temp objectForKey:@"Phones"]];
// display values
nameEntered.text = personName;
homePhone.text = [phoneNumbers objectAtIndex:0];
workPhone.text = [phoneNumbers objectAtIndex:1];
cellPhone.text = [phoneNumbers objectAtIndex:2];
} - 寫入
- (IBAction) saveData
{
// get paths from root direcory
NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
// get documents path
NSString *documentsPath = [paths objectAtIndex:0];
// get the path to our Data/plist file
NSString *plistPath = [documentsPath stringByAppendingPathComponent:@"Data.plist"];
// set the variables to the values in the text fields
self.personName = nameEntered.text;
self.phoneNumbers = [[NSMutableArray alloc] initWithCapacity:3];
[phoneNumbers addObject:homePhone.text];
[phoneNumbers addObject:workPhone.text];
[phoneNumbers addObject:cellPhone.text];
// create dictionary with values in UITextFields
NSDictionary *plistDict = [NSDictionary
dictionaryWithObjects:
[NSArray arrayWithObjects: personName, phoneNumbers, nil]
forKeys:[NSArray arrayWithObjects: @"Name", @"Phones", nil]];
NSString *error = nil;
// create NSData from dictionary
NSData *plistData = [NSPropertyListSerialization dataFromPropertyList:plistDict
format:NSPropertyListXMLFormat_v1_0
errorDescription:&error];
// check is plistData exists
if(plistData)
{
// write plistData to our Data.plist file
[plistData writeToFile:plistPath atomically:YES];
}
else
{
NSLog(@"Error in saveData: %@", error);
[error release];
}
}
【iOS】fmdb
fmdb, 更加簡化 Sqlite 的操作.
- 使用 import 以下
- FMDatabase.(h/m),
- FMResultSet.(h/m),
- FMDatabaseAdditions.(h/m) - 參考
- can't use FMDB with Xcode 4
【iOS】CustomBadge
- 範例, 顯示兩個 Badge, 或可以說是一個, 技巧就是把一個疊在另一個上面.
CustomBadge *customBadge1 = [CustomBadge customBadgeWithString:@"2"
withStringColor:[UIColor whiteColor]
withInsetColor:[UIColor redColor]
withBadgeFrame:YES
withBadgeFrameColor:[UIColor whiteColor]
withScale:1.0
withShining:YES];
CustomBadge *customBadge2 = [CustomBadge customBadgeWithString:@"CustomBadge"
withStringColor:[UIColor blackColor]
withInsetColor:[UIColor greenColor]
withBadgeFrame:YES
withBadgeFrameColor:[UIColor yellowColor]
withScale:1.5
withShining:YES];
[customBadge1 setFrame:CGRectMake(self.view.frame.size.width/2-customBadge1.frame.size.width/2+customBadge2.frame.size.width/2, 110, customBadge1.frame.size.width, customBadge1.frame.size.height)];
[customBadge2 setFrame:CGRectMake(self.view.frame.size.width/2-customBadge2.frame.size.width/2, 110, customBadge2.frame.size.width, customBadge2.frame.size.height)];[self.view addSubview:customBadge2];
[self.view addSubview:customBadge1];
【iOS】UISegmentedControl
- 初始
UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:
[NSArray arrayWithObjects: @"Mail", @”SMS”, nil]];
segment.frame = CGRectMake(10, 10, 200, 35);
segment.selectedSegmentIndex = NSIntegerMax;
segment.tag = 3;
[segment addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
segment.segmentedControlStyle = UISegmentedControlStyleBar;
[self.view addSubview:segment]; - 加入 badge, 要搭配 CustomBadge
- (IBAction) segmentAction:(id)sender
{
UISegmentedControl *segment = (UISegmentedControl*) sender;
NSLog(@"UIControlEventValueChanged:%d", segment.selectedSegmentIndex);
segment.enabled = NO;
}
- (void) viewDidLoad
{UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:
[NSArray arrayWithObjects: @"Mail", @"SMS", nil]];
segment.frame = CGRectMake(10, 10, 200, 35);
segment.selectedSegmentIndex = NSIntegerMax;
segment.tag = 3;
[segment addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
segment.segmentedControlStyle = UISegmentedControlStyleBar;
[self.view addSubview:segment];
CustomBadge *customBadge1 = [CustomBadge customBadgeWithString:@"32"
withStringColor:[UIColor whiteColor]
withInsetColor:[UIColor greenColor]
withBadgeFrame:YES
withBadgeFrameColor:[UIColor whiteColor]
withScale:1.0
withShining:YES];
[customBadge1 setFrame:CGRectMake(90, 0, 20, 20)];
[self.view addSubview:customBadge1];
CustomBadge *customBadge2 = [CustomBadge customBadgeWithString:@"33"
withStringColor:[UIColor whiteColor]
withInsetColor:[UIColor redColor]
withBadgeFrame:YES
withBadgeFrameColor:[UIColor whiteColor]
withScale:1.0
withShining:YES];
[customBadge2 setFrame:CGRectMake(190, 0, 20, 20)];
[self.view addSubview:customBadge2];[self.view bringSubviewToFront:customBadge1];
[self.view bringSubviewToFront:customBadge2];
}
【iOS】UISwitch
- 初始化
UISwitch *switch= [ [ UISwitch alloc ] initWithFrame: CGRectMake(200, 10, 0, 0) ];
switch.on = NO;
switch.tag = 2;
[switch addTarget:self action:@selector(switchAction:) forControlEvents:UIControlEventValueChanged];
[self addSubview: jumpToNextAuto]; - 縮小要用 transform
switch.transform = CGAffineTransformMakeScale(0.75, 0.75);
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