實現(xiàn)點擊按鈕切換橫豎屏的功能，設備鎖屏無影響。效果如圖所示：
手動切換橫豎屏.gif
方法一：通過setOrientation:方法
首先，要保證支持橫豎屏，你需要在這里進行設置
支持橫豎屏.png
其次，對需要旋轉(zhuǎn)的界面進行處理：需要支持屏幕旋轉(zhuǎn)，可對支持的方向進行控制
-(BOOL)shouldAutorotate{ //需要支持旋轉(zhuǎn)屏幕
return YES; //默認YES
}
-(UIInterfaceOrientationMask)supportedInterfaceOrientations{ //控制支持的方向
return _btn.selected?UIInterfaceOrientationMaskLandscapeRight:UIInterfaceOrientationMaskPortrait; //不希望屏幕自動旋轉(zhuǎn)，通過這里控制，有時會失效。
//return UIInterfaceOrientationMaskAllButUpsideDown; //默認和Target中的設置相同
}
然后，就是通過利用NSInvocation調(diào)用對象的消息
/**
切換橫豎屏
@param sender button
*/
- (IBAction)btnAction:(UIButton *)sender {
if([[UIDevice currentDevice]respondsToSelector:@selector(setOrientation:)]) {
SEL selector = NSSelectorFromString(@"setOrientation:");
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[UIDevice instanceMethodSignatureForSelector:selector]];
[invocation setSelector:selector];
[invocation setTarget:[UIDevice currentDevice]];
int val = UIDeviceOrientationPortrait;//豎屏
UIDeviceOrientation duration = [[UIDevice currentDevice]orientation];
if (UIDeviceOrientationPortrait == duration) {
val = UIInterfaceOrientationLandscapeLeft;//橫屏
}
[invocation setArgument:&val atIndex:2];
[invocation invoke];
}
}
補充：上面有提到，不希望屏幕自動旋轉(zhuǎn)，控制時有時會失效，比如你點擊了按鈕之后，旋轉(zhuǎn)了手機，再次點擊按鈕。解決辦法，添加監(jiān)聽設備方向的通知，如果是手動觸發(fā)旋轉(zhuǎn)屏，則返回；如果是設備旋轉(zhuǎn)觸發(fā)旋轉(zhuǎn)屏，則重置屏幕方向。
//添加監(jiān)聽設備方向的通知
_inteface = UIInterfaceOrientationMaskPortrait;
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(orientChange:)name:UIDeviceOrientationDidChangeNotification object:nil];
//監(jiān)聽設備方向的通知方法
- (void)orientChange:(NSNotification *)noti {
if (_isManualRotate) {
_isManualRotate = NO;
return;
}
if (_inteface == UIInterfaceOrientationMaskPortrait) {
if([[UIDevice currentDevice]respondsToSelector:@selector(setOrientation:)]) {
SEL selector = NSSelectorFromString(@"setOrientation:");
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[UIDevice instanceMethodSignatureForSelector:selector]];
[invocation setSelector:selector];
[invocation setTarget:[UIDevice currentDevice]];
int val = UIInterfaceOrientationPortrait;
[invocation setArgument:&val atIndex:2];
[invocation invoke]; }
}else {
if([[UIDevice currentDevice]respondsToSelector:@selector(setOrientation:)]) {
SEL selector = NSSelectorFromString(@"setOrientation:");
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[UIDevice instanceMethodSignatureForSelector:selector]];
[invocation setSelector:selector];
[invocation setTarget:[UIDevice currentDevice]];
int val = UIInterfaceOrientationLandscapeRight ;
[invocation setArgument:&val atIndex:2];
[invocation invoke];
}
}
}
方法二：通過設置視圖的transform
首先：關(guān)閉自動旋轉(zhuǎn)，否則狀態(tài)欄不旋轉(zhuǎn)。值得慶幸的是，界面是否支持旋轉(zhuǎn)不影響效果
-(BOOL)shouldAutorotate{ //必須關(guān)閉旋轉(zhuǎn)屏幕
return NO; //默認YES
}
然后：調(diào)用代碼旋轉(zhuǎn)狀態(tài)欄和視圖
CGFloat duration = [UIApplication sharedApplication].statusBarOrientationAnimationDuration;
[UIView animateWithDuration:duration animations:^{
[[UIApplication sharedApplication] setStatusBarOrientation:_btn.selected ? UIInterfaceOrientationLandscapeRight : UIInterfaceOrientationPortrait];
self.view.transform = _btn.selected ? CGAffineTransformMakeRotation(M_PI_2) : CGAffineTransformIdentity;
self.view.frame = CGRectMake(0, 0, self.view.frame.size.height, self.view.frame.size.width);
}];
期待你的評論建議O(∩_∩)O~
