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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 | //检查前后摄像头 - ( void )cameraBtnAction:(id)sender { BOOL cameraAvailable = [UIImagePickerController isCameraDeviceAvailable: UIImagePickerControllerCameraDeviceRear]; //前 BOOL frontCameraAvailable = [UIImagePickerController isCameraDeviceAvailable: UIImagePickerControllerCameraDeviceFront]; //后 } //检查指南针 CoreLocation.framework <CoreLocation/CoreLocation.h> - ( void )magnetometerBtnAction:(id)sender { BOOL magnetometerAvailbale = [CLLocationManager headingAvailable]; } //检查声音支持 AVFoundation.framework <AVFoundation/AVFoundation.h> - ( bool )audioBtnAction:(id)sender { //返回一个AVAudioSession实例 AVAudioSession *audioSession = [AVAudioSession sharedInstance]; BOOL audioAvailable = audioSession.inputAvailable; //bool值。获取是否支持 } //检查录像支持 MobileCoreServices.framework <MobileCoreServices/MobileCoreServices.h> - ( BOOL )isvideoCameraAvailable { //简单检查所有的可用的媒体资源类型,然后检查返回的数组, //如果其中包含了kUTTypeMovie的NSString类型对象,就证明摄像头支持录像 UIImagePickerController *picker = [[UIImagePickerController alloc]init]; //返回所支持的media的类型数组 NSArray *sourceTypes = [UIImagePickerController availableMediaTypesForSourceType:picker.sourceType]; [picker release]; if (![sourceTypes containsObject:(NSString *)kUTTypeMovie]) { //containsObject确定数组中是否包含后面的对象 return NO; } return YES; } //检查陀螺仪可用 CoreMotion.framework <CoreMotion/CoreMotion.h> - ( BOOL ) isGyroscopeAvailable { #ifdef __IPHONE_4_0//4.0之后才有 CMMotionManager *motionManager = [[CMMotionManager alloc]init]; BOOL gyroscopeAvailable = motionManager.gyroAvailable; [motionManager release]; return gyroscopeAvailable; #else return NO; #endif } |