iOS加载动画（ios导航栏设置）

本文实例为大家分享了iOS为导航栏添加播放动画的具体代码，供大家参考，具体内容如下

FLAudioVisualizerView.h

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 #import <UIKit/UIKit.h> @interface FLAudioVisualizerView : UIView #pragma mark - // 默认UIEdgeInsetsZero @property (nonatomic, assign) UIEdgeInsets contentInsets; // 默认为4 @property (nonatomic, assign) NSInteger barCount; @property (nonatomic, copy) NSArray<NSNumber *> *barHeightRateList; // 默认白色 @property (nonatomic, copy) UIColor *barColor; // 默认2 @property (nonatomic, assign) CGFloat cornerRadius; // 默认5 @property (nonatomic, assign) CGFloat barSpace; // NSValue包装CGPoint @property (nonatomic, strong) NSArray<NSValue *> *aniamteOffsetList; @property (nonatomic, readonly) BOOL isAniamting; - (void)restart; - (void)start; - (void)stop; @end

FLAudioVisualizerView.m

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 #import "FLAudioVisualizerView.h" @interface FLAudioVisualizerView () @property (nonatomic, strong) NSArray<UIView *> *barList; @property (nonatomic, assign) BOOL isAniamting; @end @implementation FLAudioVisualizerView #pragma mark - - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { [self setBarCount:4]; _barSpace = 5; _barColor = [UIColor whiteColor]; self.cornerRadius = 2; self.barHeightRateList = @[@(0.4), @(0.75), @(0.55), @(0.95)]; self.transform = CGAffineTransformMakeRotation(M_PI); self.aniamteOffsetList = @[[NSValue valueWithCGPoint:CGPointMake(0.1, 0.4)], [NSValue valueWithCGPoint:CGPointMake(0.75, 0.3)], [NSValue valueWithCGPoint:CGPointMake(0.2, 0.55)], [NSValue valueWithCGPoint:CGPointMake(0.94, 0.4)], ]; self.contentInsets = UIEdgeInsetsZero; } return self; } - (void)layoutSubviews { [super layoutSubviews]; CGRect rect = self.bounds; if (fabs(rect.size.width) < 1e-3 || fabs(rect.size.height) < 1e-3 || rect.size.width < 0 || rect.size.height < 0 ) { return; } rect = CGRectWithEdgeInserts(rect, self.contentInsets); __block CGRect barRect = rect; barRect.size.width = (rect.size.width - (self.barCount - 1) * self.barSpace) / self.barCount; NSArray<NSNumber *> *barHeightRateList = self.barHeightRateList.reverseObjectEnumerator.allObjects; [self.barList enumerateObjectsUsingBlock:^(UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { obj.layer.anchorPoint = CGPointZero; CGFloat rate = 1.0; if (idx < barHeightRateList.count) rate = barHeightRateList[idx].floatValue; barRect.size.height = rect.size.height * rate; obj.frame = barRect; barRect.origin.x += barRect.size.width + self.barSpace; }]; } #pragma mark - static CGRect CGRectWithEdgeInserts(CGRect rect, UIEdgeInsets inserts) { rect.origin.x += inserts.left; rect.origin.y += inserts.top; rect.size.width -= inserts.left + inserts.right; rect.size.height -= inserts.top + inserts.bottom; return rect; } #pragma mark - - (void)setBarCount:(NSInteger)barCount { _barCount = barCount; NSInteger diff = self.barList.count - barCount; if (diff > 0) { NSArray<UIView *> *removeBarViewList = [self.barList subarrayWithRange:NSMakeRange(barCount, diff)]; [removeBarViewList makeObjectsPerformSelector:@selector(removeFromSuperview)]; self.barList = [self.barList subarrayWithRange:NSMakeRange(0, barCount)]; } else if (diff < 0) { diff = -diff; NSMutableArray *addBarViewList = [NSMutableArray arrayWithCapacity:diff]; for (NSInteger index = 0; index < diff; index ++) { UIView *imageView = [[UIView alloc] init]; imageView.clipsToBounds = YES; imageView.layer.cornerRadius = self.cornerRadius; [addBarViewList addObject:imageView]; imageView.backgroundColor = [UIColor whiteColor]; } if (self.barList) { self.barList = [self.barList arrayByAddingObjectsFromArray:addBarViewList]; } else { self.barList = addBarViewList; } } [self.barList enumerateObjectsUsingBlock:^(UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { [self addSubview:obj]; }]; } - (void)setCornerRadius:(CGFloat)cornerRadius { _cornerRadius = cornerRadius; [self.barList enumerateObjectsUsingBlock:^(UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { obj.layer.cornerRadius = cornerRadius; }]; } - (void)setBarColor:(UIColor *)barColor { [self.barList enumerateObjectsUsingBlock:^(UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { obj.backgroundColor = barColor; }]; } - (void)aniamteWithBar:(UIView *)bar startHeight:(CGFloat)startHeight endHeight:(CGFloat)endHeight { CABasicAnimation * animation; animation = [CABasicAnimation animationWithKeyPath:@"bounds.size.height"]; animation.fromValue = [NSNumber numberWithFloat:startHeight]; animation.toValue = [NSNumber numberWithFloat:endHeight]; animation.duration = 0.25; animation.repeatCount = MAXFLOAT; animation.autoreverses = YES; [bar.layer addAnimation:animation forKey:@"bounds.size.height"]; } - (void)restart { [self stop]; [self start]; } - (void)start { if (self.isAniamting) return; self.isAniamting = YES; NSArray<NSValue *> *aniamteOffsetList = self.aniamteOffsetList.reverseObjectEnumerator.allObjects; [self.barList enumerateObjectsUsingBlock:^(UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { if (idx < aniamteOffsetList.count) { CGRect rect = CGRectWithEdgeInserts(self.bounds, self.contentInsets); CGPoint offset = aniamteOffsetList[idx].CGPointValue; [self aniamteWithBar:obj startHeight:rect.size.height * offset.x endHeight:rect.size.height * offset.y]; } }]; } - (void)stop { self.isAniamting = NO; [self.barList enumerateObjectsUsingBlock:^(UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { [obj.layer removeAllAnimations]; }]; } @end

ViewController.m

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 #import "ViewController.h" #import "FLAudioVisualizerView.h" #define kScreen_width [UIScreen mainScreen].bounds.size.width #define SCREEN_HEIGHT [UIScreen mainScreen].bounds.size.height @interface ViewController () @property (nonatomic, strong) FLAudioVisualizerView *visualizerView; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor whiteColor]; self.title = @"首页"; //修改导航栏标题字体大小和颜色,背景颜色 [self.navigationController.navigationBar setBarTintColor:[UIColor whiteColor]]; [self.navigationController.navigationBar setTitleTextAttributes:@{ NSFontAttributeName:[UIFont systemFontOfSize:17],NSForegroundColorAttributeName:[UIColor blackColor] }]; UIButton *playBtn = [UIButton buttonWithType:UIButtonTypeCustom]; playBtn.frame = CGRectMake(10, 100, 100, 20); [self.view addSubview:playBtn]; [playBtn setTitle:@"开始播放" forState:UIControlStateNormal]; [playBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; [playBtn addTarget:self action:@selector(playClick) forControlEvents:UIControlEventTouchUpInside]; UIButton *stopPlayBtn = [UIButton buttonWithType:UIButtonTypeCustom]; stopPlayBtn.frame = CGRectMake(10, 150, 100, 20); [self.view addSubview:stopPlayBtn]; [stopPlayBtn setTitle:@"停止播放" forState:UIControlStateNormal]; [stopPlayBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; [stopPlayBtn addTarget:self action:@selector(stopPlayBtnClick) forControlEvents:UIControlEventTouchUpInside]; [self setupVisualizerView]; } - (void)setupVisualizerView { CGSize size = CGSizeMake(23, 22); UIEdgeInsets insets = UIEdgeInsetsMake(10, 0, 10, 20); size.width += insets.left + insets.right; size.height += insets.top + insets.bottom; // 直接直接使用visualizerView的时候，在侧滑返回的时候，会出现很奇怪的现象，visualizerView的frame会发生变化，导致显示异常 UIView *containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, size.width, size.height)]; FLAudioVisualizerView *visualizerView = [[FLAudioVisualizerView alloc] initWithFrame:CGRectMake(0, 0, size.width, size.height)]; self.visualizerView = visualizerView; [containerView addSubview:visualizerView]; visualizerView.barColor = [UIColor colorWithRed:63/255 green:63/255 blue:64/255 alpha:1]; visualizerView.contentInsets = insets; UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(gotoCurrentPlayPage)]; [containerView addGestureRecognizer:tap]; UIBarButtonItem *barItem = [[UIBarButtonItem alloc] initWithCustomView:containerView]; self.navigationItem.rightBarButtonItem = barItem; } - (void)gotoCurrentPlayPage { NSLog(@"点击了播放按钮"); } - (void)playClick { NSLog(@"1"); [self.visualizerView restart]; } - (void)stopPlayBtnClick { NSLog(@"2"); [self.visualizerView stop]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end