my buttons and textview not display on screen in iOS? - ios

Question

i am creating three buttons and one uitextview dynamically but when i run the program its not display on my screen
this my code to create dynamic buttons and textview
-(void)getSmsdisplay
{
self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen]
applicationFrame]];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UIButton *button2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UITextView *textview=[[UITextView alloc]init];
[button setTitle:#"Comment" forState:UIControlStateNormal];
[button1 setTitle:#"Share" forState:UIControlStateNormal];
[button1 setTitle:#"Like" forState:UIControlStateNormal];
//listen for clicks
[button addTarget:self
action:#selector(btncomment:)forControlEvents:UIControlEventTouchUpInside];
[button1 addTarget:self
action:#selector(btnShare:)forControlEvents:UIControlEventTouchUpInside];
[button2 addTarget:self
action:#selector(Like:)forControlEvents:UIControlEventTouchUpInside];
smsdata *data=[[smsdata alloc]init];
[textview setText:data.Data];
[self.view addSubview:textview];
//add the button to the view
[self.view addSubview:button];
[self.view addSubview:button1];
[self.view addSubview:button2];
}

Answer 1

your coding is fine , but u r not added the frame for UIButton and UItextview
-(void)getSmsdisplay
{
self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen]
applicationFrame]];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UIButton *button2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UITextView *textview=[[UITextView alloc]init];
button.frame=CGRectMake(20, 50, 200, 50);
button1.frame=CGRectMake(20, 150, 200, 50);
button2.frame=CGRectMake(20, 300, 200, 50);
button.backgroundColor=[UIColor redColor];
button1.backgroundColor=[UIColor grayColor];
button2.backgroundColor=[UIColor blackColor];
[button setTitle:#"Comment" forState:UIControlStateNormal];
[button1 setTitle:#"Share" forState:UIControlStateNormal];
[button2 setTitle:#"Like" forState:UIControlStateNormal];
//listen for clicks
[button addTarget:self
action:#selector(btncomment:)forControlEvents:UIControlEventTouchUpInside];
[button1 addTarget:self
action:#selector(btnShare:)forControlEvents:UIControlEventTouchUpInside];
[button2 addTarget:self
action:#selector(Like:)forControlEvents:UIControlEventTouchUpInside];
[textview setText:#"karthik"];
[self.view addSubview:textview];
//add the button to the view
[self.view addSubview:button];
[self.view addSubview:button1];
[self.view addSubview:button2];
}
the output is

Answer 2

You are assigning self.view to another UIView instance, which has not been added to the viewController. Note that self.view is already initialised in a viewController and it is dangerous to reassign the same.
Also, you have not set any frames for the Buttons and textview.
The following code should make it work.
-(void)getSmsdisplay
{
UIView *smsView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen]
applicationFrame]];
[self.view addSubview: smsView]; //The new view needs to be added to something!
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UIButton *button2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UITextView *textview=[[UITextView alloc]initWithFrame:CGRectMake:(20,20,100,50)];
[button setTitle:#"Comment" forState:UIControlStateNormal];
[button1 setTitle:#"Share" forState:UIControlStateNormal];
[button1 setTitle:#"Like" forState:UIControlStateNormal];
//listen for clicks
[button addTarget:self
action:#selector(btncomment:)forControlEvents:UIControlEventTouchUpInside];
[button1 addTarget:self
action:#selector(btnShare:)forControlEvents:UIControlEventTouchUpInside];
[button2 addTarget:self
action:#selector(Like:)forControlEvents:UIControlEventTouchUpInside];
smsdata *data=[[smsdata alloc]init];
[textview setText:data.Data];
[smsView addSubview:textview];
button.frame=CGRectMake(20, 50, 200, 50);
button1.frame=CGRectMake(20, 150, 200, 50);
button2.frame=CGRectMake(20, 300, 200, 50);
//add the button to the view
[smsView addSubview:button];
[smsView addSubview:button1];
[smsView addSubview:button2];
}