h：

#import <UIKit/UIKit.h>

#define RGB(a, b, c) [UIColor colorWithRed:(a / 255.0f) green:(b / 255.0f) blue:(c / 255.0f) alpha:1.0f]

#define RGBA(a, b, c, d) [UIColor colorWithRed:(a / 255.0f) green:(b / 255.0f) blue:(c / 255.0f) alpha:d]

@interface MyToast : UIView

+ (void)showWithText:(NSString *)text:(int)toastY;

+ (void)showWithImage:(UIImage *)p_w_picpath;

@end

m：

#import "MyToast.h"

#import <QuartzCore/QuartzCore.h>

@implementation MyToast

- (void)__show {

[UIView beginAnimations:@"show" context:nil];

[UIView setAnimationDelegate:self];

[UIView setAnimationDuration:0.2f];

[UIView setAnimationDidStopSelector:@selector(__animationDidStop:__finished:__context:)];

self.alpha = 1.0f;

[UIView commitAnimations];

}

- (void)__hide {

[self performSelectorOnMainThread:@selector(__hideThread) withObject:nil waitUntilDone:NO];

}

- (void)__hideThread {

[UIView beginAnimations:@"hide" context:nil];

[UIView setAnimationDelegate:self];

[UIView setAnimationDuration:0.8f];

[UIView setAnimationDidStopSelector:@selector(__animationDidStop:__finished:__context:)];

self.alpha = 0.0f;

[UIView commitAnimations];

}

- (void)__animationDidStop:(NSString *)animationID __finished:(NSNumber *)finished __context:(void *)context {

if ([animationID isEqualToString:@"hide"]) {

[self removeFromSuperview];

self = nil;

}

else if ([animationID isEqualToString:@"show"]) {

[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(__hide) userInfo:nil repeats:NO];

}

}

+ (MyToast *)__createWithText:(NSString *)text:(int)toastY {

float screenWidth = [UIScreen mainScreen].bounds.size.width;

// float screenHeight = [UIScreen mainScreen].bounds.size.height;

float x = 10.0f;

float width = screenWidth - x * 2.0f;

UILabel *textLabel = [[UILabel alloc] init];

textLabel.backgroundColor = [UIColor clearColor];

textLabel.textAlignment = UITextAlignmentCenter;

textLabel.font = [UIFont systemFontOfSize:14];

textLabel.textColor = RGB(255, 255, 255);

textLabel.numberOfLines = 0;

textLabel.lineBreakMode = UILineBreakModeCharacterWrap;

CGSize sz = [text sizeWithFont:textLabel.font

constrainedToSize:CGSizeMake(width - 20.0f, 9999.0f)

lineBreakMode:textLabel.lineBreakMode];

CGRect tmpRect;

tmpRect.size.width = width;

tmpRect.size.height = MAX(sz.height + 20.0f, 38.0f);

tmpRect.origin.x = floor((screenWidth - width) / 2.0f);

tmpRect.origin.y =toastY;// floor(screenHeight - tmpRect.size.height - 15.0f);

MyToast *toast = [[MyToast alloc] initWithFrame:tmpRect];

toast.backgroundColor = RGBA(0, 0, 0, 0.8f);

CALayer *layer = toast.layer;

layer.masksToBounds = YES;

layer.cornerRadius = 5.0f;

textLabel.text = text;

tmpRect.origin.x = floor((toast.frame.size.width - sz.width) / 2.0f);

tmpRect.origin.y = floor((toast.frame.size.height - sz.height) / 2.0f);

tmpRect.size = sz;

textLabel.frame = tmpRect;

[toast addSubview:textLabel];

[textLabel release];

toast.alpha = 0.0f;

return toast;

}

+ (MyToast *)__createWithImage:(UIImage *)p_w_picpath {

float screenWidth = [UIScreen mainScreen].bounds.size.width;

float screenHeight = [UIScreen mainScreen].bounds.size.height;

float x = 10.0f;

float width = screenWidth - x * 2.0f;

UIImageView *p_w_picpathView = [[UIImageView alloc] initWithImage:p_w_picpath];

CGSize sz = p_w_picpathView.frame.size;

CGRect tmpRect;

tmpRect.size.width = width;

tmpRect.size.height = MAX(sz.height + 20.0f, 38.0f);

tmpRect.origin.x = floor((screenWidth - width) / 2.0f);

tmpRect.origin.y = floor(screenHeight - tmpRect.size.height - 15.0f);

MyToast *toast = [[MyToast alloc] initWithFrame:tmpRect];

toast.backgroundColor = RGBA(0, 0, 0, 0.8f);

CALayer *layer = toast.layer;

layer.masksToBounds = YES;

layer.cornerRadius = 5.0f;

tmpRect.origin.x = floor((toast.frame.size.width - sz.width) / 2.0f);

tmpRect.origin.y = floor((toast.frame.size.height - sz.height) / 2.0f);

tmpRect.size = sz;

p_w_picpathView.frame = tmpRect;

[toast addSubview:p_w_picpathView];

[p_w_picpathView release];

toast.alpha = 0.0f;

return toast;

}

/**

* Show toast with text in application window

* @param text Text to print in toast window

*/

+ (void)showWithText:(NSString *)text:(int)toastY {

MyToast *toast = [MyToast __createWithText:text:toastY];

UIWindow *mainWindow = [[UIApplication sharedApplication] keyWindow];

[mainWindow addSubview:toast];

[toast release];

[toast __show];

}

/**

* Show toast with p_w_picpath in application window

* @param p_w_picpath Image to show in toast window

*/

+ (void)showWithImage:(UIImage *)p_w_picpath {

MyToast *toast = [MyToast __createWithImage:p_w_picpath];

UIWindow *mainWindow = [[UIApplication sharedApplication] keyWindow];

[mainWindow addSubview:toast];

[toast release];

[toast __show];

}@end

引用：

#import "MyToast.h"

[MyToast showWithText:@"这里还什么都没有哦 亲！":380];

数字是显示的Y坐标。