orientation

问题 In a mobile web application I am developing, users are allowed to take a picture with their camera and the camera image is uploaded to a server. The issue I am having is that on iOS devices, images get an EXIF Orientation tag associated with them such as "ROTATE 90 CW". This orientation tag causes the image to be displayed in an incorrect orientation when it is displayed. For example, if the user takes a picture of something with their iPhone in portrait orientation, the image appears to be

问题 So I uploaded my Xcode 6.1 build to iTunes Connect and the app was approved. Now i'm trying to update the app and I updated to Xcode 7.0.1 and Xcode is giving me problems stating: (For app I used storyboards and Objective-C) warning: All interface orientations must be supported unless the app requires full screen. warning: A launch storyboard or xib must be provided unless the app requires full screen. - (NSUInteger)supportedInterfaceOrientations { return (UIInterfaceOrientationMaskPortrait |

问题 In an iPad application with a UINavigationController, everything works in portrait mode but in landscape mode the back button sometimes only goes back half a level. That is to say, on the first press the title bar animates as if it was popping a controller, and on the second press it animates the content popping. Has anyone found a solution to this? The contradictory solution in this question did not help. I have a shouldAutorotate method in the navigation controller but no others. -(BOOL)

问题 To align my JFrame from righ-to-left, I use: setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); but this works only if I use the following style (decoration) of the JFrame: public class RightToLeft { public static void main(String []args){ javax.swing.SwingUtilities.invokeLater(new Runnable(){ public void run() { try { UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName()); } catch (Exception e) { e.printStackTrace(); } JFrame.setDefaultLookAndFeelDecorated(true)

问题 To align my JFrame from righ-to-left, I use: setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); but this works only if I use the following style (decoration) of the JFrame: public class RightToLeft { public static void main(String []args){ javax.swing.SwingUtilities.invokeLater(new Runnable(){ public void run() { try { UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName()); } catch (Exception e) { e.printStackTrace(); } JFrame.setDefaultLookAndFeelDecorated(true)

问题 I'm having a lot of troubles with the new auto hiding of the status bar in iOS 8. In my app, I've got a view in which when the user taps once, the navigation bar and the status bar disappear. When in landscape, the status bar hides by itself and it's fine to me. I only need it in portrait mode. But the problem is that when the device is landscape and the bar are shown, when the user taps twice to toggle the bar (so showing), and turns the device in portrait mode, the status bar is still

问题 According to Android Developer Site: after android 2.2 there is the function " setDisplayOrientation " to adjust the camera preview rotation. And also according to the Android Developer Site , we can find following source code. android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo(); android.hardware.Camera.getCameraInfo(cameraId, info); int rotation = activity.getWindowManager().getDefaultDisplay().getRotation(); int degrees = 0 ; switch ( rotation ) { case Surface

问题 I have done what this question said here: Landscape Mode ONLY for iPhone or iPad but the view.frame.size.height is still 1024, which is the height when the device is in portrait, surely when the interface rotates the width and height switch values? (say you wanted to split the screen into 3 views, for an app that is both landscape and portrait, and you did view.frame.size.width / 3 , in landscape that wouldn't be correct as the width value wouldn't actually be the width) I'm sure on the

问题 I have done what this question said here: Landscape Mode ONLY for iPhone or iPad but the view.frame.size.height is still 1024, which is the height when the device is in portrait, surely when the interface rotates the width and height switch values? (say you wanted to split the screen into 3 views, for an app that is both landscape and portrait, and you did view.frame.size.width / 3 , in landscape that wouldn't be correct as the width value wouldn't actually be the width) I'm sure on the

问题 I'm trying to develop a mini "Around Me" like using camera, compass and location. I would like to display place's images on my screen. For the moment I have my location and my orientation with compass. I would like to know how can I determine the position of the place I want to display. Thanks for your help ;) 回答1: Once you have relative distance and bearing, which you can determine from two points in the same coordinate space using algorithms found on this page, figuring out where a known