HarmonyOS 鸿蒙Next如何调用本地相册并选取图片?
HarmonyOS 鸿蒙Next如何调用本地相册并选取图片?
如何调用本地相册并选取图片?
2 回复
参考下面代码
import { BusinessError } from '@ohos.base';
import photoAccessHelper from '@ohos.file.photoAccessHelper';
@Entry
@Component
struct Photo_Access {
build() {
Button('访问手机相册').onClick(() => {
try {
let PhotoSelectOptions = new photoAccessHelper.PhotoSelectOptions();
PhotoSelectOptions.MIMEType = photoAccessHelper.PhotoViewMIMETypes.IMAGE_TYPE;
PhotoSelectOptions.maxSelectNumber = 5;
let photoPicker = new photoAccessHelper.PhotoViewPicker();
photoPicker.select(PhotoSelectOptions).then((PhotoSelectResult: photoAccessHelper.PhotoSelectResult) => {
console.info('PhotoViewPicker.select successfully, PhotoSelectResult uri: ' +
JSON.stringify(PhotoSelectResult));
}).catch((err: BusinessError) => {
console.error('PhotoViewPicker.select failed with err: ' + JSON.stringify(err));
});
} catch (error) {
let err: BusinessError = error as BusinessError;
console.error('PhotoViewPicker failed with err: ' + JSON.stringify(err));
}
})
}
}
在HarmonyOS 鸿蒙Next系统中调用本地相册并选取图片,可以按照以下步骤进行:
权限配置
首先,需要在manifest.json
文件中声明访问存储的权限,如ohos.permission.READ_MEDIA
和ohos.permission.CAMERA
(如果需要拍照功能的话)。并在运行时向用户请求这些权限。
使用MediaStore API
鸿蒙系统提供了类似Android的MediaStore API,用于访问媒体文件。通过查询MediaStore,可以获取相册中的图片信息。
相册选择实现
- 实例化
photoAccessHelper.PhotoViewPicker
对象。 - 配置
PhotoSelectOptions
,设置MIME类型为图片,以及最大选择数量。 - 调用
photoViewPicker.select(photoSelectOptions)
方法,拉起相册选择界面。 - 处理选择结果,获取图片的URI列表。
示例代码
import photoAccessHelper from '@ohos.file.photoAccessHelper';
async function getPictureFromAlbum() {
let photoSelectOptions = new photoAccessHelper.PhotoSelectOptions();
photoSelectOptions.MIMEType = photoAccessHelper.PhotoViewMIMETypes.IMAGE_TYPE;
photoSelectOptions.maxSelectNumber = 1;
let photoPicker = new photoAccessHelper.PhotoViewPicker();
let photoSelectResult = await photoPicker.select(photoSelectOptions);
let selectedUri = photoSelectResult.photoUris[0];
// 后续可以根据selectedUri进行图片处理
}
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