界面旋转准备
- 在AppDelegate.h中添加属性
//是否旋转
@property (nonatomic, assign) BOOL isRotation;
- 在AppDelegate.m中添加方法
- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
if (self.isRotation) {
//可以针对不同的界面创建不同的值，进行返回
return UIInterfaceOrientationMaskLandscape;
}
return UIInterfaceOrientationMaskPortrait;
}
- 进入正题，找到需要旋转的界面
- (IBAction)btnClick:(id)sender {
NSLog(@"旋转");
//支持旋转
AppDelegate *app = (AppDelegate *)[UIApplication sharedApplication].delegate;
app.isRotation = YES;
[self interfaceOrientation:UIInterfaceOrientationLandscapeLeft];
}
- (void)interfaceOrientation:(UIInterfaceOrientation)orientation
{
//强制转换
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 = orientation;
[invocation setArgument:&val atIndex:2];
[invocation invoke];
}
}
- (void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
//关闭旋转(恢复原状)
AppDelegate *app = (AppDelegate *)[UIApplication sharedApplication].delegate;
app.isRotation = NO;
[self interfaceOrientation:UIInterfaceOrientationPortrait];
}
需要注意的是这个值可以在你真的需要旋转的时候进行赋值，比如在视频播放的时候全屏点击的时候进行处理
