我如何在Objective-C中使用加速度计/陀螺仪才能确定是否...
A)iPhone刚好握在用户的脸前,即“举起”或
B)例如,iPhone已放在桌子上,即显示屏朝上。
最佳答案
首先符合<UIAccelerometerDelegate>
,然后可以使用以下方法:
#pragma mark --- Acceleration Start and Stop ----------------------------
-(void)startMeasuringAcceleration{
NSLog(@"Started Measuring Acceleration");
[[UIAccelerometer sharedAccelerometer] setUpdateInterval:1];//update interval (1s at moment)
[[UIAccelerometer sharedAccelerometer] setDelegate:self];
}
-(void)stopMeasuringAcceleration{
[[UIAccelerometer sharedAccelerometer] setDelegate:nil];
}
#pragma mark UIAcceleromete Delegate Methods-----------------------------------------------
- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration{
NSLog(@"%f, %f, %f, %f", acceleration.x, acceleration.y, acceleration.z, acceleration.timestamp);
}
测量X,Y和Z。Z是屏幕上的轴,Y从上到下,X从左到右。
在viewDidLoad中调用
[self startMeasuringAcceleration]
开始希望能有所帮助。
关于objective-c - iPhone“向上”持有或躺在 table 上,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/13606202/