What is the android.widget.Toast equivalent for iOS applications?

Question

I have made Android application a few months ago. The Toast class is very useful for me. I do not need to consider the main Thread and place to show it. Anywhere I can show it and just leave that and it is automatically disappeared.

Toast.makeToast(context, msg, Toast.LENGTH_SHORT).show(); 

That's it. ^^

What about iPhone? Is there something like the Toast? Just show message and do not need to care about it. It will be automatically disappeared.

Answer 1

I've been writing for Android for a long time and I am missing Toast. I've implemented one. Need code? here you are:

ToastView.h

#import <UIKit/UIKit.h>  @interface ToastView : UIView  @property (strong, nonatomic) NSString *text;  + (void)showToastInParentView: (UIView *)parentView withText:(NSString *)text withDuaration:(float)duration;  @end 

ToastView.m

#import "ToastView.h"  @interface ToastView () @property (strong, nonatomic, readonly) UILabel *textLabel; @end @implementation ToastView @synthesize textLabel = _textLabel;  float const ToastHeight = 50.0f; float const ToastGap = 10.0f;  - (id)initWithFrame:(CGRect)frame {     self = [super initWithFrame:frame];     if (self) {         // Initialization code     }     return self; }  -(UILabel *)textLabel {     if (!_textLabel) {         _textLabel = [[UILabel alloc] initWithFrame:CGRectMake(5.0, 5.0, self.frame.size.width - 10.0, self.frame.size.height - 10.0)];         _textLabel.backgroundColor = [UIColor clearColor];         _textLabel.textAlignment = NSTextAlignmentCenter;         _textLabel.textColor = [UIColor whiteColor];         _textLabel.numberOfLines = 2;         _textLabel.font = [UIFont systemFontOfSize:13.0];         _textLabel.lineBreakMode = NSLineBreakByCharWrapping;         [self addSubview:_textLabel];      }     return _textLabel; }  - (void)setText:(NSString *)text {     _text = text;     self.textLabel.text = text; }  + (void)showToastInParentView: (UIView *)parentView withText:(NSString *)text withDuaration:(float)duration; {      //Count toast views are already showing on parent. Made to show several toasts one above another     int toastsAlreadyInParent = 0;     for (UIView *subView in [parentView subviews]) {         if ([subView isKindOfClass:[ToastView class]])         {             toastsAlreadyInParent++;         }     }      CGRect parentFrame = parentView.frame;      float yOrigin = parentFrame.size.height - (70.0 + ToastHeight * toastsAlreadyInParent + ToastGap * toastsAlreadyInParent);      CGRect selfFrame = CGRectMake(parentFrame.origin.x + 20.0, yOrigin, parentFrame.size.width - 40.0, ToastHeight);     ToastView *toast = [[ToastView alloc] initWithFrame:selfFrame];      toast.backgroundColor = [UIColor darkGrayColor];     toast.alpha = 0.0f;     toast.layer.cornerRadius = 4.0;     toast.text = text;      [parentView addSubview:toast];      [UIView animateWithDuration:0.4 animations:^{         toast.alpha = 0.9f;         toast.textLabel.alpha = 0.9f;     }completion:^(BOOL finished) {         if(finished){          }     }];       [toast performSelector:@selector(hideSelf) withObject:nil afterDelay:duration];  }  - (void)hideSelf {      [UIView animateWithDuration:0.4 animations:^{         self.alpha = 0.0;         self.textLabel.alpha = 0.0;     }completion:^(BOOL finished) {         if(finished){             [self removeFromSuperview];         }     }]; }  @end 

Call from ViewController

 [ToastView showToastInParentView:self.view withText:@"What a toast!" withDuaration:5.0]; 

Answer 2

There is no class "out-of-the-box" in UIKit to do this. But it is quite easy to create a class that will offer this behavior.

You just have to create a class that inherit from UIView. This class will have the responsibility - to create what you want to display, - to add itself in parent view hierarchy - to dismiss itself using a timer.

You will be able to use it like :

[ToastView toastViewInView:myParentView withText:@"what a wonderful text"]; 

Regards, Quentin