ios - AVCaptureDevice 在模拟器上始终为 null

Question

我正在 try catch 实时麦克风音频数据。

我从 AVCaptureSession 的苹果示例中获取了以下内容。

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 均为 null。

Answer 1

是的，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与音频、视频和渲染相关的任务。

看看Limitations of Testing in iOS Simulator

Hardware Limitations While most of the functionality of iOS devicescan be simulated in iOS Simulator, there are some hardware featuresthat must be tested directly on a device. The hardware features thatcannot be simulated are:

Accelerometer

Gyroscope

Camera

Proximity

Sensor Microphone Input