我的方法可以在iOS 8及以上版本中成功地将UIView自定义为警报消息的样式，但在iOS 7中仅支持纵向模式显示。
我的iPad应用程序部署目标是iOS 7，设备方向仅支持左横屏和右横屏。
iOS 7屏幕截图：
iOS 8屏幕：
我的代码在ViewController.m这里
- (IBAction)submitBtnActiion:(id)sender
{
if (self.emailField.text.length == 0 || self.phoneNoField.text.length == 0 || self.passField.text.length == 0) {
QAlertView *alert = [[QAlertView alloc]
initWithAlertTitle:@"Message"
withMessage:@"Please ensure that all required fields are completed"
withContent:nil
withCancelButton:@"OK"
withOtherButton:nil];
alert.delegate = self;
[alert showInWindow];
return;
}
}
QAlertView.h
#import <UIKit/UIKit.h>
#import <QuartzCore/QuartzCore.h>
@protocol QAlertDelegate <NSObject>
- (void)QAlertView:(QAlertView *)alertView
clickedAtButtonIndex:(NSInteger)index;
@end
@protocol QAlertDelegate;
@interface QAlertView : UIView
@property(nonatomic) BOOL isAdjustKeyboardOnResign;
@property(nonatomic) CGFloat adjustedValue;
@property(nonatomic) NSString *message;
@property(nonatomic, assign) id<QAlertDelegate> delegate;
- (id)initWithAlertTitle:(NSString *)title
withMessage:(NSString *)message
withContent:(UIView *)contentView
withCancelButton:(NSString *)button
withOtherButton:(NSString *)otherButton;
- (void)showInWindow;
@end
QAlertView.m
#import "QHeaders.h"
@implementation QAlertView
{
UIView *messageView;
}
@synthesize isAdjustKeyboardOnResign;
@synthesize adjustedValue;
- (CGRect)getBounds {
[[[UIApplication sharedApplication] keyWindow] endEditing:YES];
CGRect screenBounds = [UIScreen mainScreen].bounds;
NSString *ver = [[UIDevice currentDevice] systemVersion];
float ver_float = [ver floatValue];
if (ver_float >= 8.0) {
return screenBounds;
}
CGFloat width = CGRectGetWidth(screenBounds);
CGFloat height = CGRectGetHeight(screenBounds);
UIInterfaceOrientation interfaceOrientation =
[UIApplication sharedApplication].statusBarOrientation;
if (UIInterfaceOrientationIsPortrait(interfaceOrientation)) {
screenBounds.size = CGSizeMake(width, height);
} else if (UIInterfaceOrientationIsLandscape(interfaceOrientation)) {
screenBounds.size = CGSizeMake(height, width);
}
return screenBounds;
}
- (id)initWithAlertTitle:(NSString *)title
withMessage:(NSString *)message
withContent:(UIView *)contentView
withCancelButton:(NSString *)button
withOtherButton:(NSString *)otherButton {
_message = message;
bool temp = NO;
bool temp1 = NO;
if (self = [super initWithFrame:[self getBounds]]) {
self.backgroundColor = [UIColor blueColor];
}
UIView *alerView =
[[UIView alloc] initWithFrame:CGRectMake(0, 0, 1024, 1024)];
[alerView setBackgroundColor:[UIColor colorWithRed:(23 / 255.0)
green:(26 / 255.0)
blue:(31 / 255.0)
alpha:0.6]];
[self addSubview:alerView];
CGFloat adjustedHeight = ALERT_HEIGHT;
if (contentView) {
CGFloat actualHeight = contentView.frame.size.height;
adjustedHeight = actualHeight + (2 * BUTTON_HEIGHT);
}
if ([message isEqualToString:@"DisplayTableMapPopup"]) {
messageView = [[UIView alloc]
initWithFrame:CGRectMake(120,155,ALERT_WIDTH, adjustedHeight)];
_message = @"";
message = @"";
temp = YES;
}else if ([message isEqualToString:@"TableSettingPopup"]){
messageView = [[UIView alloc]
initWithFrame:CGRectMake(
((self.frame.size.width - 453) / 2)+30,
((self.frame.size.height - adjustedHeight) / 2)+24,
453, 315)];
_message = @"";
message = @"";
temp1 = YES;
}else{
messageView = [[UIView alloc]
initWithFrame:CGRectMake(
((self.frame.size.width - ALERT_WIDTH) / 2),
([QNotifier sharedInstance].qAlertKeyboardDisplay ==
YES)
? ((self.frame.size.height - adjustedHeight) / 2) -
115
: ((self.frame.size.height - adjustedHeight) / 2),
ALERT_WIDTH, adjustedHeight)];
}
[QNotifier sharedInstance].qAlertKeyboardDisplay = NO;
messageView.backgroundColor = [UIColor colorWithRed:235.0f / 255.0f
green:235.0f / 255.0f
blue:236.0f / 255.0f
alpha:1.0f];
messageView.layer.cornerRadius = 10.0f;
[messageView.layer setMasksToBounds:YES];
[messageView setUserInteractionEnabled:YES];
// INITIATE THE TITLE FOR THE ALERT VIEW
UILabel *titleLabel = [[UILabel alloc]
initWithFrame:CGRectMake(0, 5, ALERT_WIDTH, BUTTON_HEIGHT)];
titleLabel.backgroundColor = [UIColor clearColor];
titleLabel.textAlignment = NSTextAlignmentCenter;
titleLabel.text = title;
titleLabel.font = [UIFont fontWithName:ROBOTO_MEDIUM size:15.0f];
[messageView addSubview:titleLabel];
if (contentView) {
// NEED TO INCUDE THE CONTENT VIEW MIDDLE OF TITLE AND BUTTON.
[messageView addSubview:contentView];
} else {
// NEED TO INCLUDE THE MESSAGE IN THE MIDDLE OF TITLE AND BUTTON
UILabel *contentLabel = [[UILabel alloc]
initWithFrame:CGRectMake(10, BUTTON_HEIGHT - 5, ALERT_WIDTH - 20,
DEFAULT_CONTENT_HEIGHT + 5)];
contentLabel.backgroundColor = [UIColor clearColor];
contentLabel.textAlignment = NSTextAlignmentCenter;
contentLabel.textColor = ALERT_TEXTCOLOR;
contentLabel.numberOfLines = 4;
contentLabel.adjustsFontSizeToFitWidth = YES;
contentLabel.text = message;
contentLabel.font = [UIFont fontWithName:ROBOTO_LIGHT size:14.0f];
[messageView addSubview:contentLabel];
}
// TWO BUTTONS HAS VALUES.
UILabel *dividerLabel = [[UILabel alloc]init];
if (temp) {
dividerLabel.frame=CGRectMake(0,(messageView.frame.size.height - BUTTON_HEIGHT)-3,
ALERT_WIDTH, 1);
}else if(temp1){
dividerLabel.frame=CGRectMake(0,(messageView.frame.size.height - BUTTON_HEIGHT),
453, 1);
}else{
dividerLabel.frame=CGRectMake(0,(messageView.frame.size.height - BUTTON_HEIGHT),
ALERT_WIDTH, 1);
}
dividerLabel.backgroundColor = [UIColor colorWithRed:(212 / 255.0)
green:(216 / 255.0)
blue:(217 / 255.0)
alpha:1];
[messageView addSubview:dividerLabel];
NSInteger limit = (otherButton == nil || button == nil) ? 1 : 2;
for (NSInteger i = 0; i < limit; i++) {
if (i) {
UILabel *buttonDividerLabel = [[UILabel alloc]
initWithFrame:CGRectMake(
(i * (ALERT_WIDTH / limit)),
(messageView.frame.size.height - BUTTON_HEIGHT), 1,
BUTTON_HEIGHT)];
buttonDividerLabel.backgroundColor = [UIColor colorWithRed:(212 / 255.0)
green:(216 / 255.0)
blue:(217 / 255.0)
alpha:1];
[messageView addSubview:buttonDividerLabel];
}
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
[btn setFrame:CGRectMake((i * (ALERT_WIDTH / limit)),
(messageView.frame.size.height - BUTTON_HEIGHT),
ALERT_WIDTH / limit, BUTTON_HEIGHT)];
if (temp1) {
[btn setFrame:CGRectMake((i * (453 / limit)),
(messageView.frame.size.height - BUTTON_HEIGHT),
453 / limit, BUTTON_HEIGHT)];
}
btn.tag = i;
NSString *btnString;
UIColor *textColor;
if (limit > 1) {
btnString = (i) ? otherButton : button;
textColor = (i) ? BUTTON_TEXTCOLOR : [UIColor lightGrayColor];
} else {
if (otherButton) {
btnString = otherButton;
} else {
btnString = button;
}
textColor = BUTTON_TEXTCOLOR;
}
[btn setTitle:btnString forState:UIControlStateNormal];
[btn setExclusiveTouch:YES];
[btn addTarget:self
action:@selector(buttonClicked:)
forControlEvents:UIControlEventTouchUpInside];
[btn.titleLabel setFont:[UIFont fontWithName:ROBOTO_MEDIUM size:(temp1)?16:15.0f]];
[btn setTitleColor:textColor forState:UIControlStateNormal];
[messageView addSubview:btn];
}
[self addSubview:messageView];
return self;
}
- (void)showInWindow {
[[[[UIApplication sharedApplication] windows] firstObject] addSubview:self];
[[[[UIApplication sharedApplication] windows] firstObject]
bringSubviewToFront:self];
messageView.transform = CGAffineTransformMakeScale(0.9, 0.9);
[UIView animateWithDuration:0.2
delay:0
options:UIViewAnimationOptionCurveEaseOut
animations:^{
messageView.transform = CGAffineTransformIdentity;
}
completion:^(BOOL finished) {
indicatorView.alpha = 1.0;
}];
[self layoutIfNeeded];
}
- (void)dismiss {
if ([indicatorView superview]) {
[indicatorView removeFromSuperview];
indicatorView = nil;
}
[UIView animateWithDuration:0.2
animations:^{
// parentView.alpha = 0.0;
messageView.alpha = 0.0;
indicatorView.alpha = 0.0;
}
completion:^(BOOL finished) {
[messageView removeFromSuperview];
messageView = nil;
[self removeFromSuperview];
}];
}
- (void)buttonClicked:(UIButton *)btn {
if ([self.delegate
respondsToSelector:@selector(QAlertView:clickedAtButtonIndex:)]) {
[self.delegate QAlertView:self clickedAtButtonIndex:btn.tag];
}
[self dismiss];
}
提前致谢。