IOS7、8模态半透明弹出框

[java] view
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//源Controller中跳转方法实现
,不支持旋转。

MKDialogController *controller = [[MKDialogController alloc] init];

controller.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

if ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0) {

controller.providesPresentationContextTransitionStyle = YES;

controller.definesPresentationContext = YES;

controller.modalPresentationStyle = UIModalPresentationOverCurrentContext;

[self presentViewController:controller animated:YES completion:nil];

} else {

self.view.window.rootViewController.modalPresentationStyle = UIModalPresentationCurrentContext;

[self presentViewController:controller animated:NO completion:nil];

self.view.window.rootViewController.modalPresentationStyle = UIModalPresentationFullScreen;

}

[java] view
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self.view.backgroundColor = [UIColor clearColor];

UIView *alphaView = [[UIView alloc] initWithFrame:self.view.frame];

UIView *baseView = [[UIView alloc] initWithFrame:self.view.frame];

alphaView.backgroundColor = [UIColor clearColor];

baseView.backgroundColor = [UIColor blackColor];

baseView.alpha = 0.7;

[self.view addSubview:baseView];

[self.view addSubview:alphaView];

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