{"id":585,"date":"2023-02-25T19:40:52","date_gmt":"2023-02-25T11:40:52","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=585"},"modified":"2023-04-29T20:31:09","modified_gmt":"2023-04-29T12:31:09","slug":"swift-ui-spinner-or-stepper-uistepper","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/02\/25\/swift-ui-spinner-or-stepper-uistepper\/","title":{"rendered":"Swift UI &#8211; \u5fae\u8c03\u5668\u6216\u6b65\u8fdb\u5668\uff08UIStepper\uff09"},"content":{"rendered":"<blockquote>\n<p>\u6ce8\uff1a\u4ee3\u7801\u5df2\u5347\u7ea7\u81f3Swift4<\/p>\n<\/blockquote>\n<h3>\u57fa\u672c\u4f7f\u7528<\/h3>\n<p>\u5fae\u8c03\u5668\uff08UIStepper\uff09\u63a7\u4ef6\u5305\u542b\u4e24\u4e2a\u6309\u94ae\u201c+\u201d\u548c\u201c-\u201d\uff0c\u8ba9\u4f7f\u7528\u8005\u53ef\u4ee5\u505a\u6570\u503c\u4e0a\u7684\u8c03\u6574\u3002<\/p>\n<p><!-- more --><\/p>\n<pre><code class=\"language-swift\">class ViewController: UIViewController {\n\n    var stepper:UIStepper!\n    var label:UILabel!\n\n    override func viewDidLoad() {\n        super.viewDidLoad()\n\n        stepper = UIStepper()\n        stepper.center = self.view.center\n        \/\/\u8bbe\u7f6estepper\u7684\u8303\u56f4\u4e0e\u521d\u59cb\u503c\n        stepper.maximumValue = 10\n        stepper.minimumValue = 1\n        stepper.value = 5.5\n        \/\/\u8bbe\u7f6e\u6bcf\u6b21\u589e\u51cf\u7684\u503c\n        stepper.stepValue = 0.5\n        \/\/\u8bbe\u7f6estepper\u53ef\u4ee5\u6309\u4f4f\u4e0d\u653e\u6765\u8fde\u7eed\u66f4\u6539\u503c\n        stepper.continuous = true\n        \/\/\u8bbe\u7f6estepper\u662f\u5426\u5faa\u73af\uff08\u5230\u6700\u5927\u503c\u65f6\u518d\u589e\u52a0\u6570\u503c\u4ece\u6700\u5c0f\u503c\u5f00\u59cb\uff09\n        stepper.wraps = true\n        stepper.addTarget(self, action:&quot;stepperValueChanged&quot;,\n        forControlEvents: UIControlEvents.ValueChanged)\n        self.view.addSubview(stepper)\n        label = UILabel(frame:CGRectMake(100, 190, 300, 30))\n        print(stepper.value)\n        label.text = &quot;\u5f53\u524d\u503c\u4e3a\uff1a\\(stepper.value)&quot;\n        self.view.addSubview(label)\n    }\n\n    func stepperValueChanged() {\n       label.text = &quot;\u5f53\u524d\u503c\u4e3a\uff1a\\(stepper.value)&quot;\n    }\n}<\/code><\/pre>\n<h3>\u53c2\u6570\u8bbe\u7f6e<\/h3>\n<p>\u4f7f\u7528tintColor\u5c5e\u6027\u53ef\u4ee5\u8bbe\u7f6e\u5fae\u8c03\u5668\u7684\u989c\u8272\u3002 \u800c\u52a0\u51cf\u7b26\u53f7\u56fe\u6807\uff0c\u80cc\u666f\u56fe\u7247\uff0c\u4e2d\u95f4\u5206\u5272\u7ebf\u56fe\u7247\u90fd\u53ef\u4ee5\u66ff\u6362\u6210\u81ea\u5df1\u56fe\u7247\u3002<\/p>\n<pre><code class=\"language-swift\">\/\/\u7528\u81ea\u5b9a\u4e49\u7684\u56fe\u7247\u66ff\u6362\u201c-\u201d\u548c\u201c+\u201d\nstepper.setDecrementImage(UIImage(named: &quot;sub.png&quot;), forState: UIControlState.Normal)\nstepper.setIncrementImage(UIImage(named: &quot;add.png&quot;), forState: UIControlState.Normal)<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6ce8\uff1a\u4ee3\u7801\u5df2\u5347\u7ea7\u81f3Swift4 \u57fa\u672c\u4f7f\u7528 \u5fae\u8c03\u5668\uff08UIStepper\uff09\u63a7\u4ef6\u5305\u542b\u4e24\u4e2a\u6309\u94ae\u201c+\u201d\u548c\u201c-\u201d\uff0c\u8ba9\u4f7f\u7528\u8005\u53ef [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[171],"tags":[],"class_list":["post-585","post","type-post","status-publish","format-standard","hentry","category-swift"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=585"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/585\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}