Use button to move, scale, rotate, reset and so on.

In UIView there is a view called button, the control is simply a click, that is, all of the things we can click on the Phone are button, now we use this control to achieve the above and so on.

PS: Methods and comments are all in the file project, you can download it and run it, and here I just write the code.

about how to use UIButton, you can go to Baidu, there is a special video explanation, here the map is more troublesome, bad operation, please understand.

ViewController.h declares all the methods.

#import<UIKit/UIKit.h>@interfaceViewcontroller:uiviewcontroller//declares the attributes of the UIButton being controlled.@property (Weak, nonatomic) Iboutlet UIButton *btn;//declares the Move method up or down.-(Ibaction) button: (ID) sender;//declares the scaling method.-(Ibaction) Scale: (ID) sender;//declares the method of rotation.-(ibaction) Rotate: (ID) sender;//initializes the button.-(Ibaction) Initialize: (ID) sender;@end

VIEWCONTROLLER.M file to implement all the methods.

#import "ViewController.h"//You can also create a macro that is more convenient and does not waste memory space.#defineKdelta 10@interfaceViewcontroller ()@end@implementationViewcontroller- (void) Btncilickwithblock: (void(^) ()) block{//animation ready to start[UIView Beginanimations:nil Context:nil]; //time the animation ran[UIView setanimationduration:1.0f]; //implementation method.block (); //run the animation.[UIView commitanimations];}#pragmaMark control button move around (up and down)-(ibaction) Buttons: (ID) sender{[self btncilickwithblock:^{        //in addition to using frame, you can also use the centerCGRect frame =_btn.frame;//cgpoint tmpcenter = _btn.center; //Why use CGFloat, because Origin is inherited and CGRect, CGRect is a floating-point type, so use CGFloat. //CGFloat Dale = 50; //You can use the switch method, or you can use the If judgment method, as you like. //because sender is an ID type, you cannot use the. operator, so you can only use the Get method.        Switch([sender tag]) { Case 1: Frame.origin.y-=Kdelta; if(FRAME.ORIGIN.Y <=Ten) {FRAME.ORIGIN.Y=0; }//tmpcenter.y-= Kdelta;                 Break;  Case 2: frame.origin.x+=Kdelta; if(Frame.origin.x >= About) {frame.origin.x= -; }//tmpcenter.x + = Kdelta;                 Break;  Case 3: Frame.origin.y+=Kdelta; if(FRAME.ORIGIN.Y >=458) {FRAME.ORIGIN.Y=468; }//tmpcenter.y + = Kdelta;                 Break;  Case 4: frame.origin.x-=Kdelta; if(Frame.origin.x <=Ten) {frame.origin.x=0; }//tmpcenter.x-= Kdelta;                 Break; default:                 Break; } _btn.frame=frame;//_btn.center = tmpcenter;    }];}#pragmaMark Spin-(ibaction) Rotate: (ID) Sender {//radians 3.14-π//Angle//here the system has defined a macro for us. //rotate counterclockwise to precede the macro with the-operator, otherwise it is the + operator. //the m_pi_4 here means to rotate 45°. //_btn.transform = cgaffinetransformmakerotation (-m_pi_4);[Self btncilickwithblock:^{        if(5==[sender tag]) {_btn.transform= Cgaffinetransformrotate (_btn.transform, M_pi_2 *-1); }        Else if(6==[sender tag]) {_btn.transform= Cgaffinetransformrotate (_btn.transform, M_pi_2 *1); }    }];}#pragmaMark Zoom-(ibaction) Scale: (ID) sender{[self btncilickwithblock:^{        //use the three-mesh operator to determine which button is.CGFloat scale = [Sender tag] = =7?1.2:0.8; //determines the button label.        if([sender tag] = =7) {_btn.transform=Cgaffinetransformscale (_btn.transform, scale, scale); }        Else if([sender tag] = =8) {_btn.transform=Cgaffinetransformscale (_btn.transform, scale, scale); }    }];}#pragmaMark Initialization-(ibaction) Initialize: (IDsender {[Self btncilickwithblock:^{        //initializes all the deformation properties before initializing._btn.transform =cgaffinetransformidentity; }];}@end

Engineering:

Http://files.cnblogs.com/iOSCain/%E6%8C%89%E9%92%AE%E7%9A%84%E7%8A%B6%E6%80%81.zip

Use button to move, scale, rotate, reset and so on.