您可以檢測方向,如果屏幕被鎖定在縱向模式的方法。簡單的方法是「CoreMotion」。代碼片段如下。
1)首先,你應該添加CoreMotion freamework構建設置
2-)進口CoreMotion freamework
#import <CoreMotion/CoreMotion.h>
3-)添加的屬性,就像下面。
@interface BaseGeneralViewController(){
UIInterfaceOrientation orientationLast, orientationAfterProcess;
CMMotionManager *motionManager;
UIInterfaceOrientation orientationNew;
}
4-)我們創建方法來初始化
- (void)initializeMotionManager{
motionManager = [[CMMotionManager alloc] init];
motionManager.accelerometerUpdateInterval = .2;
motionManager.gyroUpdateInterval = .2;
[motionManager startAccelerometerUpdatesToQueue:[NSOperationQueue currentQueue]
withHandler:^(CMAccelerometerData *accelerometerData, NSError *error) {
if (!error) {
[self outputAccelerationData:accelerometerData.acceleration];
}
else{
NSLog(@"%@", error);
}
}];
}
5-)聲明outputAccelerationData方法
- (void)outputAccelerationData:(CMAcceleration)acceleration{
if (acceleration.x >= 0.75 && orientationLast != UIInterfaceOrientationLandscapeLeft) {
orientationNew = UIInterfaceOrientationLandscapeLeft;
[self callQRCodePayment:UIDeviceOrientationLandscapeRight];
}
else if (acceleration.x <= -0.75 && orientationLast != UIInterfaceOrientationLandscapeRight) {
orientationNew = UIInterfaceOrientationLandscapeRight;
[self callQRCodePayment:UIDeviceOrientationLandscapeLeft];
}
else if (acceleration.y <= -0.75) {
//orientationNew = UIInterfaceOrientationPortrait;
//NSLog(@"Portrait");
}
else if (acceleration.y >= 0.75) {
//orientationNew = UIInterfaceOrientationPortraitUpsideDown;
}
else {
// Consider same as last time
return;
}
if (orientationNew == orientationLast)
return;
orientationLast = orientationNew;
}
6-)調用初始化方法中viewDidLoad中
- (void)viewDidLoad
{
[super viewDidLoad];
[self initializeMotionManager];
}
你可以看到詳細信息change Oriantation
你可以參考。 http://stackoverflow.com/questions/9122149/detecting-ios-uidevice-orientation –