ios键盘横屏_iOS界面横屏竖屏随意切换

最新推荐文章于 2020-12-31 07:56:03 发布

原创最新推荐文章于 2020-12-31 07:56:03 发布 · 292 阅读

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#ios键盘横屏

该博客围绕APP单界面横竖屏切换需求展开。APP全局界面支持竖屏，仅一个界面点击按钮可切换横竖屏。博主经朋友支持解决问题并附上demo，介绍了Xcode配置，还给出AppDelegate和ViewController中相关代码，实现点击切换屏幕方向。

先讲需求：

APP中所有界面支持竖屏，只有在一个界面，点击一个btn之后变成横屏，再点就是竖屏。

在网上找了一些方法，发现实现不了，遂问了一个做过这个功能的朋友，得到朋友的支持之后，顺利解决这一问题，我这里将demo附上。

首先，看效果图：

点击横屏.gif

在这里因为是要全局界面都是支持竖屏，其他的不支持，在Xcode里面的配置

Xcode配置

然后就是在AppDelegate中添加属性和方法，

添加属性

在AppDelegate中添加方法

一下是viewController中，即需要转换屏幕方向的.m文件的代码：

#import "ViewController.h"

#import "AppDelegate.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

// _currentOrient = [UIApplication sharedApplication].statusBarOrientation;

UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];

[button setTitle:@"转一转" forState:UIControlStateNormal];

[button setTitleColor:[UIColor redColor] forState:UIControlStateNormal];

[button addTarget:self action:@selector(changeFrame:) forControlEvents:UIControlEventTouchUpInside];

button.translatesAutoresizingMaskIntoConstraints = NO;

[self.view addSubview:button];

NSLayoutConstraint * centerX = [NSLayoutConstraint constraintWithItem:button attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0];

NSLayoutConstraint * centerY = [NSLayoutConstraint constraintWithItem:button attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeCenterY multiplier:1.0 constant:0];

NSLayoutConstraint * width = [NSLayoutConstraint constraintWithItem:button attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:100];

NSLayoutConstraint * height =[NSLayoutConstraint constraintWithItem:button attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:44];

[NSLayoutConstraint activateConstraints:@[centerX,centerY,width,height]];

centerY.active = YES;

centerX.active = YES;

width.active = YES;

height.active = YES;

}

// 允许自动旋转

-(BOOL)shouldAutorotate{

return YES;

}

// 横屏时是否将状态栏隐藏

-(BOOL)prefersStatusBarHidden{

return NO;

}

-(void)changeFrame:(UIButton *)btn{

btn.selected = !btn.selected;

if (btn.selected) {

[self forceOrientationLandscapeWith:self];

}else{

[self forceOrientationPortraitWith:self];

}

// 横屏 home键在右边

-(void)forceOrientationLandscapeWith:(UIViewController *)VC{

AppDelegate *appdelegate=(AppDelegate *)[UIApplication sharedApplication].delegate;

appdelegate.isForcePortrait=NO;

appdelegate.isForceLandscape=YES;

[appdelegate application:[UIApplication sharedApplication] supportedInterfaceOrientationsForWindow:VC.view.window];

//强制翻转屏幕，Home键在右边。

[[UIDevice currentDevice] setValue:@(UIInterfaceOrientationLandscapeRight) forKey:@"orientation"];

//刷新

[UIViewController attemptRotationToDeviceOrientation];

}

// 竖屏

- (void)forceOrientationPortraitWith:(UIViewController *)VC{

AppDelegate *appdelegate=(AppDelegate *)[UIApplication sharedApplication].delegate;

appdelegate.isForcePortrait=YES;

appdelegate.isForceLandscape=NO;

[appdelegate application:[UIApplication sharedApplication] supportedInterfaceOrientationsForWindow:VC.view.window];

//强制翻转屏幕

[[UIDevice currentDevice] setValue:@(UIDeviceOrientationPortrait) forKey:@"orientation"];

//刷新

[UIViewController attemptRotationToDeviceOrientation];

}

这样就实现了点击切换屏幕方向的需求，嘻嘻！！！