iphone一些知识，去掉StatusBar,横屏，重力感应,自动切换横竖，开机画面横屏，开机画

feiyang10086

iphone一些知识，去掉StatusBar,横屏，重力感应,自动切换横竖，开机画面横屏，开机画面横屏。

http://www.cnblogs.com/APTX4869/archive/2011/02/24/1963527.html
1，去掉StatusBar

在info.plist添加UIStatusBarHidden设置Boolean，设置为YES.

2，横屏

继续在info.list中添加UIInterfaceOrientation 设置UIInterfaceOrientationLandscapeRight

3，重力感应

AppDelegate继承UIAccelerometerDelegate协议，并实现

1. 
   
2. // Implement this method to get the lastest data from the accelerometer
   
3. 
   
4. - (void)accelerometer:(UIAccelerometer*)accelerometer didAccelerate:(UIAcceleration*)acceleration {
   
5. 
   
6. //Use a basic low-pass filter to only keep the gravity in the accelerometer values{}

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在

1. - (void)applicationDidFinishLaunching:(UIApplication *)application {
   
2. 
   
3. 
   
4. }

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添加

1. 
   
2. //Configure and start accelerometer
   
3. 
   
4. [[UIAccelerometer sharedAccelerometer] setUpdateInterval:(1.0 / kAccelerometerFrequency)];
   
5. 
   
6. [[UIAccelerometer sharedAccelerometer] setDelegate:self];

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就可以实现重力感应

4,自动切换横竖。

1. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation //支持横 竖转动
   
2. {
   
3. 
   
4. return YES;
   
5. }
   
6. - (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration //当发生旋转 时
   
7. {
   
8. f(self.interfaceOrientation==UIInterfaceOrientationPortrait||self.interfaceOrientation==UIDeviceOrientationPortraitUpsideDown)
   
9. {
   
10. //横 转向 竖
    
11. }
    
12. }
    
13. - (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation //旋转 完成
    
14. { 　　　　　　　　 if(self.interfaceOrientation==UIInterfaceOrientationPortrait||self.interfaceOrientation==UIDeviceOrientationPortraitUpsideDown)
    
15. {
    
16. //当前是在竖屏模式
    
17. }
    
18. }

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横屏之间切换

1. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation //支持横 竖转动
   
2. 
   
3. {
   
4. 
   
5. if (interfaceOrientation == UIInterfaceOrientationLandscapeRight )
   
6. 
   
7. {
   
8. 
   
9. return YES;
   
10. 
    
11. }
    
12. 
    
13. else if (interfaceOrientation == UIInterfaceOrientationLandscapeLeft)
    
14. 
    
15. {
    
16. 
    
17. return YES;
    
18. 
    
19. }
    
20. 
    
21. return NO;
    
22. 
    
23. }

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以下未经过测试

使用重力感应，判断手机的方向，然后设定[UIApplication sharedApplication].statusBarOrientation = UIInterfaceOrientationLandscapeRight,以及UIInterfaceOrientationPortrait,就可以做到根据不同的手机方向弹出横屏还是竖屏的对话框了，包括对话框上包含输入框的键盘也可以自动旋转了

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5，开机画面横屏

Default-LandscapeLeft.png
Default-LandscapeRight.png
Default-Portrait.png
Default-PortraitUpsideDown.png

芯忻相依

谢谢分享