本地存储离子2错误 [英] Local storage in ionic 2 error
问题描述
我尝试在我的Ionic 2应用程序中使用它:
https:// ionicframework .com / docs / v2 / storage /
I try to use this in my Ionic 2 application : https://ionicframework.com/docs/v2/storage/
我已经运行
cordova plugin add cordova-sqlite-storage --save
和
npm install --save @ionic/storage
成功。
当我尝试在app.module.ts中添加存储时,我遇到了这个错误:
And when I tried to add Storage in my app.module.ts, I had this error :
Error: Can't resolve all parameters for Storage: (?).
at v (http://localhost:8100/build/polyfills.js:3:4864)
at SyntaxError.BaseError [as constructor] (http://localhost:8100/build/main.js:127193:27)
at new SyntaxError (http://localhost:8100/build/main.js:11660:16)
at CompileMetadataResolver._getDependenciesMetadata (http://localhost:8100/build/main.js:27183:31)
at CompileMetadataResolver._getTypeMetadata (http://localhost:8100/build/main.js:27058:26)
at CompileMetadataResolver._getInjectableMetadata (http://localhost:8100/build/main.js:27046:21)
at CompileMetadataResolver.getProviderMetadata (http://localhost:8100/build/main.js:27288:40)
at http://localhost:8100/build/main.js:27246:49
at Array.forEach (native)
at CompileMetadataResolver._getProvidersMetadata (http://localhost:8100/build/main.js:27213:19)
at CompileMetadataResolver.getNgModuleMetadata (http://localhost:8100/build/main.js:26897:50)
at JitCompiler._loadModules (http://localhost:8100/build/main.js:72991:64)
at JitCompiler._compileModuleAndComponents (http://localhost:8100/build/main.js:72951:52)
at JitCompiler.compileModuleAsync (http://localhost:8100/build/main.js:72917:21)
at PlatformRef_._bootstrapModuleWithZone (http://localhost:8100/build/main.js:52753:25)
我不明白我该如何解决它。
I don't understand how I have to do to solve it.
我的app.module.ts:
My app.module.ts :
import { Storage } from '@ionic/storage';
...
providers: [
{provide: ErrorHandler, useClass: IonicErrorHandler},
PData,
PBackground,
PTranslate,
Storage
]
...
推荐答案
自Ionic 2.2.0以来,建议使用@ ionic / storage version 2.0.0。自上一版本以来,app.modules.ts中的配置已更改。如果您没有以正确的方式更改所有内容,则会发生错误。
Since Ionic 2.2.0, it's recommended to use @ionic/storage version 2.0.0. Configuration in app.modules.ts has changed since the previous version. The error occurs if you haven't changed everything in the right way.
在app.modules.ts中进行以下更改:
In app.modules.ts do following changes:
- 从提供商处删除存储空间
-
更改导入声明:
- Remove Storage from providers
Change import statement:
来自:从'@ ionic / storage'导入{Storage};
到: import来自'@ ionic / storage'的{IonicStorageModule};
将以下内容添加到imports数组中:
Add the following to the imports array:
IonicStorageModule.forRoot()
导入数组应如下所示:
imports: [
IonicModule.forRoot(MyApp),
IonicStorageModule.forRoot()
],
注意:不要对任何其他文件中的存储导入进行任何更改。
NOTE: Do not make any change in imports of Storage in any other files.
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