\u5229\u7528 entryAbility \u5e94\u7528\u8bc1\u660e\u5468\u671f\u7684\u7279\u70b9\uff0c\u521d\u59cb\u5316 store \u5b9e\u4f8b<\/p>\n\n\n\n
import UIAbility from '@ohos.app.ability.UIAbility';
import hilog from '@ohos.hilog';
import window from '@ohos.window';
import dataPreferences from '@ohos.data.preferences';
export default class EntryAbility extends UIAbility {
onCreate(want, launchParam) {
try{
dataPreferences.getPreferences(this.context,\"myStore\",(err,preferences)=>{
if(err){console.error(\"\u62a5\u9519\u4e86\");return}
\/*\u4f7f\u7528 globalThis \u65b9\u5f0f\u53ef\u4ee5\u8ba9\u5168\u5c40\u5e94\u7528\u516c\u7528\u8be5\u5c5e\u6027*\/
globalThis.entryAbilityPreferences = preferences;
})
}catch (error){
console.error(\"\u62a5\u9519\u4e86\")
}
}
}<\/code><\/pre>\n\n\n\n\u5c01\u88c5 store \u7c7b\uff0csrc\\main\\ets\\utils\\storage.ets<\/code><\/p>\n\n\n\nexport default class Storage{
entryAbilityPreferences;
constructor() {
this.entryAbilityPreferences = globalThis.entryAbilityPreferences;
}
\/*\u8bbe\u7f6e*\/
setItem(key:string,value:string|number|boolean){
this.entryAbilityPreferences.has(key,(err, val)=>{
if(err){console.error(\"set\u8c03\u7528\u5931\u8d25\");return}
if(val){console.error(\"key\u540d\u5df2\u5b58\u5728\")}else{
try{
this.entryAbilityPreferences.put(key,value)
this.entryAbilityPreferences.flush()
}catch (err){
console.error(\"put\u65b9\u6cd5\u62a5\u9519\u4e86\")
}
}
})
}
\/*\u67e5\u627e*\/
getItem(key:string,defaultVal:string|number|boolean):Promise<string|number|boolean>{
return new Promise((resolve,reject)=>{
this.entryAbilityPreferences.get(key,defaultVal,(err,val)=>{
if(err){reject(\"\u62a5\u9519\u4e86\")}
resolve(val as string|number|boolean);
})
})
}
\/*\u5220\u9664*\/
delItem(key:string){
this.entryAbilityPreferences.delete(key)
}
}<\/code><\/pre>\n\n\n\n\u4f7f\u7528<\/p>\n\n\n\n
import router from '@ohos.router';
import promptAction from '@ohos.promptAction'
import Storage from \"..\/utils\/storage\"
\u200b
@Entry
@Component
struct Page {
storage = new Storage();
@Builder Header(){
Row(){
Button(\"\u5b58\u50a8\")
.onclick(async ()=>{
this.storage.setItem(\"userName\",\"\u9f9a\u7bad\") \/*\u5199\u5165*\/
let result = await this.storage.getItem(\"userName\",\"\u767b\u5f55\") \/*\u8bfb\u53d6*\/
})
}
}
}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"\u5229\u7528 entryAbility \u5e94\u7528\u8bc1\u660e\u5468\u671f\u7684\u7279\u70b9\uff0c\u521d\u59cb\u5316 store \u5b9e\u4f8b \u5c01\u88c5 store \u7c7b\uff0csrc\\m […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[],"class_list":["post-1000","post","type-post","status-publish","format-standard","hentry","category-harmonyos4-0"],"_links":{"self":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/1000","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1000"}],"version-history":[{"count":1,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/1000\/revisions"}],"predecessor-version":[{"id":1001,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/1000\/revisions\/1001"}],"wp:attachment":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1000"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1000"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}