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ipad 应用 锁定lanscape状态不变,无论怎么旋转,如何实现

试过了下面两个方法都无效

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 

{ 

return UIInterfaceOrientationIsLandscape(interfaceOrientation);

}
还有

(BOOL)shouldAutorotateToInterfaceOrientation:UIInterfaceOrientation)interfaceOrientation 
{ 
return (interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}

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a123456678 2016-07-19 17:14:33 1800 0
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  • <key>UISupportedInterfaceOrientations</key>
        <array>
            <string>UIInterfaceOrientationLandscapeLeft</string>
        </array>
    或者代码中viewcontroller加,
    
    - (BOOL)shouldAutorotate
    {
        return NO;
    }
    
    - (NSUInteger)supportedInterfaceOrientations
    {
        return UIInterfaceOrientationMaskLandscapeRight;
    }
    
    - (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
    {
        return UIInterfaceOrientationLandscapeRight;
    }
    
    - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
    {
        return (interfaceOrientation == UIInterfaceOrientationLandscapeRight);
    }
    2019-07-17 19:58:36
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