我是 ios 和 Objective-C 的新手。请对我有点耐心。
我正在尝试开发的应用程序中的功能是一个小型滚动工具栏，其中包含多个按钮、状态切换按钮。工具栏上方还有另一个按钮，可以滑入和滑出工具栏。我成功实现的第二个功能是使用一个视图进行整个设置，并且当滑动按钮触摸事件使整个视图上下动画时。
对于滚动视图，我想以编程方式添加按钮，因此我为类绘制了一个出口并尝试添加一个自创按钮作为子视图。但是我看不到按钮。我也无法观察到滚动视图的滑动。
以下是我添加按钮的方式：此外，上述功能的总视图比总视图控制器的大小要小得多
UIButton *button = [[UIButton alloc] init];
button.titleLabel.text = @"hello";
[_scrollTop setContentSize:self.view.frame.size];
[_scrollTop addSubview:button];
我希望下面的两张图片可以帮助您理解我正在尝试开发的功能。如果有人知道存在类似功能，请直接告诉我。
编辑：代码完全是
//
// HCILocationViewController.m
// app2
//
// Created by Ravi Vooda on 13/03/13.
// Copyright (c) 2013 housing.co.in. All rights reserved.
//
#import "HCILocationViewController.h"
#import "HCIAnnotationViewController.h"
@interface HCILocationViewController ()
@property int widMap;
@property BOOL showExploreOptions;
@end
@implementation HCILocationViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
_mapLocationView.delegate = self;
MKPointAnnotation *annotation = [[HCIAnnotationViewController alloc]
initwithHouse:[self singleHome]];
[_mapLocationView addAnnotation:annotation];
_widMap = 10000;
_showExploreOptions = NO;
/*
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self
action:@selector(aMethod:)
forControlEvents:UIControlEventTouchDown];
[button setTitle:@"Show View" forState:UIControlStateNormal];
button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);//give values whatever you want.
[_scrollTop addSubview:button];
*/
[self addButtonsToScrollView];
}
- (void)addButtonsToScrollView
{
NSInteger buttonCount = 4;
CGRect buttonFrame = CGRectMake(5.0f, 5.0f, self.scrollTop.frame.size.width-10.0f, 40.0f);
for (int index = 0; index <buttonCount; index++) {
UIButton *button = [[UIButton alloc]initWithFrame:buttonFrame];
[button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
[button setTag:index+1];
NSString *title = [NSString stringWithFormat:@"Button %d",index+1];
[button setTitle:title forState:UIControlStateNormal];
[self.scrollTop addSubview:button];
buttonFrame.origin.y+=buttonFrame.size.height+5.0f;
}
CGSize contentSize = self.scrollTop.frame.size;
contentSize.height = buttonFrame.origin.y;
[self.scrollTop setContentSize:contentSize];
}
- (void)buttonPressed:(UIButton *)button
{
NSLog(@"button pressed");
switch (button.tag) {
case 1:
//Do something
break;
default:
break;
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(MKAnnotationView*) mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
NSString *identifier = @"currDetailsIdentifier";
MKPinAnnotationView *annotationView = (MKPinAnnotationView *)[_mapLocationView dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annotationView == nil) {
annotationView = [[MKPinAnnotationView alloc]
initWithAnnotation:annotation
reuseIdentifier:identifier];
} else {
annotationView.annotation = annotation;
}
annotationView.enabled = YES;
annotationView.canShowCallout = YES;
return annotationView;
}
-(void) mapViewDidFinishLoadingMap:(MKMapView *)mapView
{
MKMapRect zoomRect = MKMapRectNull;
for (id <MKAnnotation> annotation in mapView.annotations) {
MKMapPoint annotationPoint = MKMapPointForCoordinate(annotation.coordinate);
MKMapRect pointRect = MKMapRectMake(
annotationPoint.x - (_widMap / 2),
annotationPoint.y - (_widMap/2),
_widMap,
_widMap);
if (MKMapRectIsNull(zoomRect)) {
zoomRect = pointRect;
} else {
zoomRect = MKMapRectUnion(zoomRect, pointRect);
}
}
[mapView setVisibleMapRect:zoomRect animated:YES];
}
-(void) setMyHouse:(NSDictionary *)singleHouse {
self.singleHome = singleHouse;
}
- (IBAction)toggleExploreOptionsView:(UIButton *)sender {
sender.selected = !sender.selected;
if (_showExploreOptions){
NSLog(@"Close Options");
[UIView animateWithDuration:0.2 animations:^{
_exploreView.frame = CGRectMake(_exploreView.frame.origin.x, _exploreView.frame.origin.y + _exploreOptionsView.frame.size.height, _exploreView.frame.size.width, _exploreView.frame.size.height + _exploreOptionsView.frame.size.height);
}];
}
else {
NSLog(@"Open Options");
[UIView animateWithDuration:0.2 animations:^{
_exploreView.frame = CGRectMake(_exploreView.frame.origin.x, _exploreView.frame.origin.y - _exploreOptionsView.frame.size.height, _exploreView.frame.size.width, _exploreView.frame.size.height - _exploreOptionsView.frame.size.height);
}];
}
_showExploreOptions = !_showExploreOptions;
}
@end