[TOC] ## 概述 ## 示例 ### 直接使用 ``` AppStorage.SetOrCreate('PropA', 47); let storage: LocalStorage = new LocalStorage({ 'PropA': 17 }); let propA: number = AppStorage.Get('PropA') // propA in AppStorage == 47, propA in LocalStorage == 17 var link1: SubscribedAbstractProperty<number> = AppStorage.Link('PropA'); // link1.get() == 47 var link2: SubscribedAbstractProperty<number> = AppStorage.Link('PropA'); // link2.get() == 47 var prop: SubscribedAbstractProperty<number> = AppStorage.Prop('PropA'); // prop.get() == 47 link1.set(48); // two-way sync: link1.get() == link2.get() == prop.get() == 48 prop.set(1); // one-way sync: prop.get() == 1; but link1.get() == link2.get() == 48 link1.set(49); // two-way sync: link1.get() == link2.get() == prop.get() == 49 storage.get('PropA') // == 17 storage.set('PropA', 101); storage.get('PropA') // == 101 AppStorage.Get('PropA') // == 49 link1.get() // == 49 link2.get() // == 49 prop.get() // == 49 ``` ### 从UI内部使用AppStorage和LocalStorage ``` AppStorage.SetOrCreate('PropA', 47); let storage = new LocalStorage({ 'PropA': 48 }); @Entry(storage) @Component struct CompA { @StorageLink('PropA') storLink: number = 1; @LocalStorageLink('PropA') localStorLink: number = 1; build() { Column({ space: 20 }) { Text(`From AppStorage ${this.storLink}`) .onClick(() => this.storLink += 1) Text(`From LocalStorage ${this.localStorLink}`) .onClick(() => this.localStorLink += 1) } } } ```