swan.getStorageInfoSync

解释：同步获取当前 storage 的相关信息。

方法参数

无

示例

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图片示例

代码示例

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  1. <view class="container">    <view class="card-area">        <view class="list-area border-bottom">            <label class="list-item-key-4">key</label>            <input class="list-item-value" bindfocus="keyFocus" bindinput="keyInput" type="text" value="{{key}}" placeholder="请输入key"/>        </view>        <view class="list-area border-bottom">            <label class="list-item-key-4">value</label>            <input class="list-item-value" bindfocus="valueFocus" bindinput="valueInput" type="text" value="{{value}}" placeholder="请输入value"/>        </view>        <view>            <button  bindtap="setStorage" type="primary" hover-stop-propagation="true">存储数据</button>            <button  bindtap="getStorage" type="primary" hover-stop-propagation="true" disabled="{{disabled}}">读取数据</button>             <button  bindtap="getStorageInfo" type="primary" disabled="{{disabled}}">获取存储数据信息</button>        </view>    </view></view>

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  1. Page({    data: {        key: '示例Key',        value: '示例Value',        disabled: true    },    keyInput(e) {        this.setData('key', e.detail.value);    },    valueInput(e) {        this.setData('value', e.detail.value);    },    valueFocus() {        this.setData('value', '');    },    keyFocus() {        this.setData('key', '');    },    setStorage() {        let key = this.hasKey();        if (!key) {            return;        }        swan.setStorage({            key,            data: this.getData('value'),            success: res => {                this.toast('存储成功', 'none');                this.setData('disabled', false);            },            fail: err => {                this.toast('存储数据失败');            }        });    },    getStorage() {        let key = this.hasKey();        if (!key) {            return;        }        swan.getStorage({            key,            success: res => {                const data = res.data;                if (data) {                    swan.showModal({                        title: '数据信息',                        content: `${key}: ${data}`,                        showCancel: false                    });                } else {                    this.toast('找不到key对应的值');                }            },            fail: err => {                this.toast('读取数据失败');            }        });    }, getStorageInfo() {        let res = swan.getStorageInfoSync();        // 基础库 3.140.1 之前，无法判断接口是否调用失败        // 基础库 3.140.1 及以后，通过 instanceof 来判断接口是否调用失败        if (!(res instanceof Error)) {            console.log('getStorageInfoSync success', res);        }        else {            console.log('getStorageInfoSync fail', res.message);        }    },    hasKey() {        let key = this.getData('key');        if (key) {            return key;        }        this.toast('key不能为空');    },    toast(title, icon = 'none') {        swan.showToast({title, icon});    }});

错误码

Android

Bug & Tip

  • Error对象，可通过instanceof来判断接口是否调用失败。