First, notice
1. Monitoring Notifications
- -(void) Addobserver: (ID) Observer selector: (SEL) aselector name: (NSString *) AName object: (ID) anobject;
- The Aselector method of observer is called when the AnObject object publishes a notification named Aname
2. Release Notifications
- Publish a Notification object (name, object, UserInfo)
- -(void) Postnotification: (nsnotification *) notification;
- AnObject released a notice named Aname.
- -(void) Postnotificationname: (NSString *) AName object: (ID) anobject;
- AnObject released a notification named Aname, and passed an extra data: Auserinfo
- -(void) Postnotificationname: (NSString *) AName object: (ID) anobject userInfo: (nsdictionary *) Auserinfo;
Second, load the controller from the storyboard inside
1. Load Storyboard
- 1> Method 1: Use the name of the storyboard file
- + (Uistoryboard *) Storyboardwithname: (NSString *) name Bundle: (NSBundle *) Storyboardbundleornil;
- 2> Method 2: Storyboard method of the Controller
- -[Uiviewcontroller Storyboard]
2. Loading the Controller
- Returns the first controller (initialization controller, the controller that the Arrow refers to)
- -(ID) Instantiateinitialviewcontroller;
- Returns a controller that uniquely identifies the identifier
- -(ID) Instantiateviewcontrollerwithidentifier: (NSString *) identifier;
Third, block definition format
Definition of 1.block variables
- void (^myblock) (int, int);
- Myblock = ^ (int a, int b) {
- };
int age = 10;
[e-mail protected] Definition
- @property (nonatomic, copy) void (^myblock) (int, int);
- @property (nonatomic, assign) int age;
3. Parameters as Methods
- -(void) Setmyblock: (void (^) (int, int)) Myblock;
- -(void) Setage: (int) age;
Iv. Common functions of CGRect
- 1.CGRectGetMinX (CGRect rect) functions such as
- 2.CGRectContainsPoint (< #CGRect Rect#>, < #CGPoint point#>)
Five, the cutting of uiimage
- Cgimagecreatewithimageinrect (< #CGImageRef Image#>, < #CGRect rect#>)
VI, anti-aliasing
- -(void) Clearalias
- {
- Self.layer.borderWidth = 2;
- Self.layer.borderColor = [Uicolor Clearcolor]. Cgcolor;
- The layer will be rendered as a bitmap.
- Self.layer.shouldRasterize = YES;
- For (UIView *child in self.subviews) {
- [Child Clearalias];
- }
- }
Seven, timer
1.NSTimer
- 1> artificially controlled refresh rate
- 2> low refresh rate, suitable for slow refresh
- 3> Creating a Timer
- Returns a new timer, but does not start the timer and needs to call the fire method
- + (Nstimer *) Timerwithtimeinterval: (nstimeinterval) TI target: (ID) atarget selector: (SEL) Aselector userInfo: (ID) UserInfo repeats: (BOOL) Yesorno;
- Return a new timer and start the timer immediately
- + (Nstimer *) Scheduledtimerwithtimeinterval: (nstimeinterval) TI target: (ID) atarget selector: (SEL) Aselector UserInfo :(ID) UserInfo repeats: (BOOL) Yesorno;
- 4> Stop timer (as long as the timer stops, you cannot start the timer again)
- -(void) invalidate;
2.CADisplayLink
- 1> contains quartzcore frames
- 2> Fixed refresh frequency (1 seconds Refresh 60 times)
- 3> requires high refresh speed, suitable for fast refresh
- 4> Creating DisplayLink
- Returns an Cadisplaylink timer object that will call 60 times the target's Sel method in 1 seconds and pass Cadisplaylink as a parameter
- + (Cadisplaylink *) Displaylinkwithtarget: (ID) Target selector: (SEL) sel;
- 5> Start Timing
- -(void) Addtorunloop: (Nsrunloop *) Runloop Formode: (NSString *) mode;
- 6> Stop Timing
- -(void) invalidate;
- 7> Brush Frame Interval
- @property (readonly, nonatomic) cftimeinterval duration;
- 8> control Pause or continue
- @property (getter=ispaused, nonatomic) BOOL paused;
Eight, animation
Animations in 1.UIView Packages
- 1> end-to-end
- [UIView Beginanimations:nil Context:nil];
- // ... What animations need to be performed
- [UIView commitanimations];
2> Block
- [UIView animatewithduration:0.5 animations:^{
- Animations that need to be performed
- } completion:^ (BOOL finished) {
- Animation complete
- }];
3> Transition Animation (transition animation)
- Make a view perform a transition animation
- [UIView transitionwithview:<# (UIView *) #> duration:<# (nstimeinterval) #> options:<# ( uiviewanimationoptions) #> animations:<#^ (void) animations#> completion:<#^ (BOOL finished) completion# >];
Animation of 2.CALayer
- What values can the keypath of cabasicanimation and cakeyframeanimation be?
- Search in Xcode documents: Calayer animatable Properties
- Specific properties of transform: Search Catransform3d Key Path
1> cabasicanimation
- * Fromvalue Initial value
- * Tovalue final value (from initialization change to last value)
- * Byvalue Step value (based on initial value, how many values are added)
2> cakeyframeanimation
3> catransition (Transition animation)
- Catransition *anim = [catransition animation];
- Anim.type = @ "Cube";
- Anim.subtype = Kcatransitionfrombottom;
- [View.layer Addanimation:anim Forkey:nil];
4> Caanimationgroup
- * Animation, you can perform multiple animations at the same time
3. How to select an animation
- 1> If you need to perform multiple animations repeatedly, it's best to choose Calayer animations
- 2> If the animation is finished, it is necessary to use the previous things, it is best to choose UIView block animation
- 3> If you need to perform multiple animations at the same time, it's best to choose Caanimationgroup
- The most flexible of 4> uiview animations and Calayer animations is the Calayer animation
4. Customize some animations
- Use Cadisplaylink to complete animations that need to be performed in the brush frame method
iOS Development--Summary & Common Development Summary
