iOS_MingXing的博客

一、引入系统库#import <AVFoundation/AVFoundation.h>二、全局变量声明@interface ViewController (){ AVAudioRecorder *recorder; NSTimer *levelTimer;}@property(nonatomic,strong)UILabel *labelVoice;@property(nonatomic,strong)CALayer *layerVoice;@end三

iOS 13之后，苹果禁止KVC直接修改私有属性。以前用KVC修改状态栏背景色也会Crash。新的解决办法如下。if (@available(iOS 13.0, *)) { UIView *statusBar = [[UIView alloc]initWithFrame:[UIApplication sharedApplication].keyWindow.windowScene...