IOS考試題2

考點(diǎn)，考察UI控件的坐標(biāo)獲取，動(dòng)畫的使用等知識(shí)的使用，OC能寫出來(lái)，swift就能寫出來(lái)，swiftUI略過(guò)，國(guó)內(nèi)使用率10%(截止今天)
oc寫法

// // ViewController.m // 002-考試題2oc1 // // Created by 魯軍 on 2021/5/30. //#import "ViewController.h" @interface ViewController () @property (weak, nonatomic) IBOutlet UIButton *itcastButton; @property (weak, nonatomic) IBOutlet UIView *underline; @property(nonatomic,weak)UIButton *selectedButton; @end @implementation ViewController - (IBAction)buttonClick:(UIButton *)sender {// NSLog(@"%@",sender.currentTitle);if(self.selectedButton!=nil){self.selectedButton.selected = NO;}sender.selected = YES;self.selectedButton = sender;[UIView animateWithDuration:0.25 animations:^{CGFloat underlineX = CGRectGetMinX(sender.frame);CGFloat underlineY = CGRectGetMaxY(sender.frame);CGFloat underlineW = sender.frame.size.width;CGFloat underlineH = self.underline.frame.size.height;self.underline.frame = CGRectMake(underlineX, underlineY, underlineW, underlineH);}]; } - (void)viewDidLoad {[super viewDidLoad]; } - (void)viewDidAppear:(BOOL)animated{[UIView setAnimationsEnabled:NO];[self buttonClick:self.itcastButton];[UIView setAnimationsEnabled:YES]; } @end

swift寫法

// // ViewController.swift // 02-考試題2 // // Created by 魯軍 on 2021/5/25. // import UIKit class ViewController: UIViewController {private var selectedButton: UIButton?@IBOutlet weak var underline: UIView!@IBOutlet weak var itcastButton: UIButton!override func viewDidLoad() {super.viewDidLoad()}@IBAction func buttonClick(sender: UIButton) {//debugPrint(sender.currentTitle as Any)if (selectedButton != nil) {selectedButton!.isSelected = false}sender.isSelected = trueself.selectedButton = senderUIView.animate(withDuration: 0.25, animations: {let underlineX = sender.frame.minXlet underlineY = sender.frame.maxYlet underlineW = sender.frame.widthlet underlineH = self.underline.frame.heightself.underline.frame = CGRect(x: underlineX, y: underlineY, width: underlineW, height: underlineH)})}override func viewDidAppear(_ animated: Bool) {UIView.setAnimationsEnabled(false)buttonClick(sender: self.itcastButton)UIView.setAnimationsEnabled(true)} }

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