37 行
1.0 KiB
Plaintext
37 行
1.0 KiB
Plaintext
import preferences from '@ohos.data.preferences';
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export class PreferencesHelper {
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public static async put(key: string, value: preferences.ValueType | undefined | null) {
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const pref = await preferences.getPreferences(getContext(), 'PreferencesHelper')
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// 写入数据
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if (value !== undefined && value !== null) {
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await pref.put(key, value)
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} else {
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await pref.delete(key)
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}
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// 刷盘
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await pref.flush()
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}
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public static async get(key: string): Promise<preferences.ValueType> {
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return new Promise(async (resolve, reject) => {
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const pref = await preferences.getPreferences(getContext(), 'PreferencesHelper')
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pref.get(key, undefined).then((r1: preferences.ValueType) => {
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resolve(r1)
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})
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})
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}
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public static async delete(key: string): Promise<void> {
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return new Promise(async (resolve, reject) => {
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const pref = await preferences.getPreferences(getContext(), 'PreferencesHelper')
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pref.delete(key).then(() => {
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resolve()
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})
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})
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}
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} |
