UISegmentedControl
のフレームをどのように定義しますか? container view
、つまりUIView
の下部にセグメント化されたコントロールを表示したいと思います。
これは完璧です。
UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 435)];
scroll.contentSize = CGSizeMake(320, 700);
scroll.showsHorizontalScrollIndicator = YES;
NSArray *itemArray = [NSArray arrayWithObjects: @"One", @"Two", @"Three", nil];
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:itemArray];
segmentedControl.frame = CGRectMake(35, 200, 250, 50);
segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;
[segmentedControl addTarget:self action:@selector(MySegmentControlAction:) forControlEvents: UIControlEventValueChanged];
segmentedControl.selectedSegmentIndex = 1;
[scroll addSubview:segmentedControl];
[segmentedControl release];
[self.view addSubview:scroll];
次に、クラスにメソッドを追加します。
- (void)MySegmentControlAction:(UISegmentedControl *)segment
{
if(segment.selectedSegmentIndex == 0)
{
// code for the first button
}
}
非推奨のUISegmentedControlStyleについては、 this URLをご覧ください。
Uはこうすることができます...
UISegmentedControl *segmentControl = [[UISegmentedControl alloc]initWithItems:@[@"One",@"Two"]];
[segmentControl setSegmentedControlStyle:UISegmentedControlStyleBar];
segmentControl.frame = CGRectMake(10, 50, 300, 30);
[segmentControl addTarget:self action:@selector(segmentedControlValueDidChange:) forControlEvents:UIControlEventValueChanged];
[segmentControl setSelectedSegmentIndex:0];
[scrollView addSubview:segmentControl];
[segmentControl release];
ステップ2:
-(void)segmentedControlValueDidChange:(UISegmentedControl *)segment
{
switch (segment.selectedSegmentIndex) {
case 0:{
//action for the first button (Current)
break;}
case 1:{
//action for the first button (Current)
break;}
}
}
Swift 4.x:の回答を更新しました
class SegmentClass: UIViewController {
func addControl() {
let items = ["Uno", "Dos", "Tres"]
let segmentedControl = UISegmentedControl(items: items)
segmentedControl.frame = CGRect(x: 35, y: 200, width: 250, height: 50)
segmentedControl.addTarget(self, action: #selector(segmentAction(_:)), for: .valueChanged)
segmentedControl.selectedSegmentIndex = 1
view.addSubview(segmentedControl)
}
@objc func segmentAction(_ segmentedControl: UISegmentedControl) {
switch (segmentedControl.selectedSegmentIndex) {
case 0:
break // Uno
case 1:
break // Dos
case 2:
break // Tres
default:
break
}
}
}
Objective-Cの元の答え:
NSArray *itemArray = [NSArray arrayWithObjects: @"Uno", @"Dos", @"Tres", nil];
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:itemArray];
segmentedControl.frame = CGRectMake(35, 200, 250, 50);
[segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents: UIControlEventValueChanged];
segmentedControl.selectedSegmentIndex = 1;
[self.view addSubview:segmentedControl];
次に、ユーザーが値を変更したときに呼び出されるsegmentActionメソッドを作成します
- (void)segmentAction:(UISegmentedControl *)segment
{
switch (segment.selectedSegmentIndex) {
case 0:
// Uno
break;
case 1:
// Dos
break;
case 2:
// Tres
break;
default:
break;
}
}
見やすいので、switchステートメントの方が好きです。 0、1、2ではなく、enumを作成し、オプション(optionUno、optionDos、optionTres)に列挙型の値を使用することで、これを改善できます。
手順1。インデックス値を使用してセグメントコントロールを作成する
- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"common-bg.jpg"]];
[self.navigationItem setHidesBackButton:YES];
//-- For creating segment control in navigation bar
UISegmentedControl *mainSegment = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:@"Back", @"Month", @"Year", @"Home", nil]];
[mainSegment setSegmentedControlStyle:UISegmentedControlStyleBar];
mainSegment.frame = CGRectMake(0,0, 400, 43);
self.navigationItem.titleView = mainSegment;
mainSegment.selectedSegmentIndex = 1;
[mainSegment addTarget:self action:@selector(mainSegmentControl:) forControlEvents: UIControlEventValueChanged];
[self.view addSubview:mainSegment];
//--**--
}
ステップ2。サブビューの作成
- (void)mainSegmentControl:(UISegmentedControl *)segment
{
if(segment.selectedSegmentIndex == 0)
{
// action for the first button (Current or Default)
}
else if(segment.selectedSegmentIndex == 1)
{
// action for the second button
}
else if(segment.selectedSegmentIndex == 2)
{
// action for the third button
}
else if(segment.selectedSegmentIndex == 3)
{
// action for the fourth button
}
}
UISegmentedControlをプログラムでコンテナービューに追加するには、次の手順を実行します。
// Create UISegmentedControl object to add control UISegment.
UISegmentedControl *objSegment = [[UISegmentedControl alloc] initWithItems:array];
// Set frame for objSegment Control (formate: (x, y, width, height)). where, y = (height of view - height of control).
[objSegment setFrame:CGRectMake(0, (self.view.frame.size.height - 40), 320, 40)];
// handle UISegmentedControl action.
[objSegment addTarget:self action:@selector(handleSegmentControl:) forControlEvents: UIControlEventValueChanged];
// Add your UISegmentedControl in your view.
[self.view addSubview:objSegment];
質問がある場合は、私に連絡してください。
これは、すべてのタイプのiOSデバイスで機能します。
UISegment *segment = [[UISegmentedControl alloc] initWithItems:array];
segment.frame = CGRectMake(0, self.view.frame.size.height - 40, 300, 40);
UIFont *font = [UIFont fontWithName:@"DroidSans" size:18.0f];
NSDictionary *attributes = [NSDictionary dictionaryWithObject:font
forKey:NSFontAttributeName];
[segment setTitleTextAttributes:attributes
forState:UIControlStateNormal];
[segment addTarget:self action:@selector(segmentAction:) forControlEvents: UIControlEventValueChanged];
[self.view addSubview:segment];
スイフト:
let items = ["All Fruits", "Orange", "Grapes", "Banana"]
let filtersSegment = UISegmentedControl(items: items)
filtersSegment.frame = CGRect.init(x: 0, y: 0, width: 300, height: 50)
filtersSegment.selectedSegmentIndex = 0
filtersSegment.tintColor = UIColor.black
filtersSegment.addTarget(self, action: #selector(self.filterApply), for: UIControlEvents.valueChanged)
self.view.addSubview(filterSegment)
@objc private func filterApply(segment: UISegmentedControl) -> Void {
switch segment.selectedSegmentIndex {
case 1:
//Do something for Orange
case 2:
//Do something for Grapes
case 3:
//Do something for Banana
default:
//Do something for All Fruits
}
}