AVCaptureDevice在模拟器上始终为null [英] AVCaptureDevice is always null on simulator

问题描述

我正在尝试捕获实时麦克风音频数据。

I am trying to capture live microphone audio data.

我从苹果示例中获取了以下内容 AVCaptureSession 。

I took the following from the apple example for AVCaptureSession.

AVCaptureSession *captureSession = [[AVCaptureSession alloc] init];

AVCaptureDevice *audioCaptureDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio];

NSError *error = nil;
AVCaptureDeviceInput *audioInput = [AVCaptureDeviceInput deviceInputWithDevice:audioCaptureDevice error:&error];

if (audioInput) {
    [captureSession addInput:audioInput];
}
else {
    // Handle the failure.
    NSLog(@"ERROR");
}

audioCaptureDevice 和 audioInput 都是空的。

推荐答案

是的，它应该是。因为模拟器没有任何麦克风。您应该始终在真实设备上测试任何音频，视频和渲染相关任务。

Yes, it should be. Because simulator doesn't have any microphone. You should always test any audio, video, rendering related task on a real device.

看看在iOS模拟器中测试的限制

硬件限制虽然可以在iOS模拟器中模拟iOS设备的大部分功能
，但有一些硬件功能
必须直接在设备上测试。
无法模拟的硬件功能包括：

Hardware Limitations While most of the functionality of iOS devices can be simulated in iOS Simulator, there are some hardware features that must be tested directly on a device. The hardware features that cannot be simulated are:

加速度计

陀螺仪

相机

邻近

传感器麦克风输入

这篇关于AVCaptureDevice在模拟器上始终为null的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！