iOS音频频谱动画,仿QQ录音频谱
先上效果图:
![](http://upload-images.jianshu.io/upload_images/2699846-e7fc931aac527a3a.gif?imageMogr2/auto-orient/strip%7CimageView2/2/w/268)
display.gif
有需要的请移步GitHub下载:
https://github.com/HuangGY1993/GYSpectrum
用法很简单,示例:
SpectrumView * spectrumView = [[SpectrumView alloc] initWithFrame:CGRectMake(CGRectGetMidX(self.view.frame) - 100,180,200, 40.0)];
spectrumView.text = [NSString stringWithFormat:@"%d",0];
__weak SpectrumView * weakWaver = spectrumView;
spectrumView.itemLevelCallback = ^() {
[self.audioRecorder updateMeters];
//取得第一个通道的音频,音频强度范围是-160到0
float power = [self.audioRecorder averagePowerForChannel:0];
weakWaver.level = power;
};
[self.view addSubview:spectrumView];
使用前请注意:
SpectrumView.frame.size.width / SpectrumView.numberOfItems >= 5
默认SpectrumView.numberOfItems = 20 (可修改,必须为偶数),所以SpectrumView.frame.size.width默认要大于100
例如:SpectrumView * spectrumView = [[SpectrumView alloc] initWithFrame:CGRectMake(0,0,100,40)];
作者:Genie_GY
链接:https://www.jianshu.com/p/502c69062d9e
来源:简书
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