\npublic func ValidNull
\n return value != nil && !(value is NSNull)
\n}
\n“`<\/p>\n
\u5728\u5176\u4ed6\u7684\u985e\u5225\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u9019\u6a23\u4f7f\u7528\u9019\u4e9b\u8b8a\u6578\u8207\u51fd\u6578\uff1a<\/p>\n
“`swift
\nprint(KScreenWidth)
\nprint(KScreenHeight)<\/p>\n
if ValidInt(value: 1) {
\n print(“\u662f\u6574\u6578”)
\n} else {
\n print(“\u4e0d\u662f\u6574\u6578”)
\n}
\n“`<\/p>\n
\u9019\u6bb5\u7a0b\u5f0f\u78bc\u5c55\u793a\u4e86\u5982\u4f55\u5728 Swift \u4e2d\u5b9a\u7fa9\u548c\u4f7f\u7528\u5168\u57df\u8b8a\u6578\u4ee5\u53ca\u51fd\u6578\uff0c\u4e26\u4e14\u80fd\u5920\u8f15\u9b06\u5730\u9032\u884c\u985e\u578b\u6aa2\u67e5\u3002<\/p>\n
\u5efa\u7acb BaseController<\/h3>\n
`BaseController` \u662f\u8a31\u591a\u61c9\u7528\u7a0b\u5f0f\u4e2d\u5e38\u898b\u7684\u8a2d\u8a08\u6a21\u5f0f\u3002\u5b83\u5141\u8a31\u6211\u5011\u5728\u4e00\u500b\u57fa\u790e\u985e\u5225\u4e2d\u96c6\u4e2d\u7ba1\u7406\u5171\u7528\u7684\u529f\u80fd\uff0c\u7136\u5f8c\u8b93\u5176\u4ed6\u8996\u5716\u63a7\u5236\u5668\u7e7c\u627f\u9019\u4e9b\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5275\u5efa\u4e00\u500b `BaseController` \u7684\u7bc4\u4f8b\uff1a<\/p>\n
“`swift
\nimport UIKit<\/p>\n
class JGBaseViewController: UIViewController {
\n override func viewDidLoad() {
\n super.viewDidLoad()
\n \/\/ 1. \u521d\u59cb\u5316\u8b8a\u91cf
\n self.initIMVariables()
\n \/\/ 2. UI \u5275\u5efa
\n self.initIMUI()
\n \/\/ 3. \u52a0\u8f09\u6578\u64da
\n self.initIMData()
\n }<\/p>\n
func initIMVariables() {
\n \/\/ \u521d\u59cb\u5316\u8b8a\u91cf\u908f\u8f2f
\n }<\/p>\n
func initIMUI() {
\n \/\/ UI \u5275\u5efa\u908f\u8f2f
\n }<\/p>\n
func initIMData() {
\n \/\/ \u52a0\u8f09\u6578\u64da\u908f\u8f2f
\n }
\n}
\n“`<\/p>\n
\u5728\u5b50\u985e\u5225\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u9019\u6a23\u4f7f\u7528 `BaseController`\uff1a<\/p>\n
“`swift
\nclass Test2ViewController: JGBaseViewController {
\n override func initIMVariables() {
\n super.initIMVariables()
\n print(“\u521d\u59cb\u5316\u8b8a\u91cf”)
\n }<\/p>\n
override func initIMUI() {
\n super.initIMUI()
\n print(“UI \u5275\u5efa”)
\n }<\/p>\n
override func initIMData() {
\n super.initIMData()
\n print(“\u52a0\u8f09\u6578\u64da”)
\n }
\n}
\n“`<\/p>\n
\u5728\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4e2d\uff0c`Test2ViewController` \u7e7c\u627f\u81ea `JGBaseViewController`\uff0c\u4e26\u91cd\u5beb\u4e86\u4e09\u500b\u521d\u59cb\u5316\u51fd\u6578\uff0c\u4ee5\u4fbf\u5728\u8996\u5716\u52a0\u8f09\u6642\u57f7\u884c\u76f8\u61c9\u7684\u908f\u8f2f\u3002<\/p>\n
**\u57f7\u884c\u7d50\u679c**
\n“`swift
\n\u521d\u59cb\u5316\u8b8a\u91cf
\nUI \u5275\u5efa
\n\u52a0\u8f09\u6578\u64da
\n“`<\/p>\n
\u9019\u6a23\u7684\u8a2d\u8a08\u4e0d\u50c5\u8b93\u7a0b\u5f0f\u78bc\u7d50\u69cb\u66f4\u6e05\u6670\uff0c\u540c\u6642\u4e5f\u63d0\u9ad8\u4e86\u91cd\u7528\u6027\u3002<\/p>\n
\n
![\"Swift](\"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2020\/11\/cup-1-1.png\" "\\"\\"")
<\/a><\/p>\n