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chenjun
4049b9ee 1 parent 115ff784

图片下载获取权限

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Showing 1 changed file with 57 additions and 17 deletions
... ... @@ -5,7 +5,12 @@ import { promptAction } from '@kit.ArkUI';
import { image } from '@kit.ImageKit';
import { photoAccessHelper } from '@kit.MediaLibraryKit';
import fs from '@ohos.file.fs';
import { NetworkUtil } from 'wdKit';
import { DateTimeUtils, NetworkUtil, PermissionUtil } from 'wdKit';
import { PrivacySettingModel } from '../model/PrivacySettingModel';
import { TrackConstants, TrackingButton } from 'wdTracking';
import { faceDetector } from '@kit.CoreVisionKit';
import mediaLibrary from '@ohos.multimedia.mediaLibrary';
import fileIo from '@ohos.file.fs';
const PERMISSIONS: Array<Permissions> = [
'ohos.permission.READ_IMAGEVIDEO',
... ... @@ -22,6 +27,8 @@ export struct ImageDownloadComponent {
@State photoAccessHelper: photoAccessHelper.PhotoAccessHelper | undefined = undefined; // 相册模块管理实例
@State imageBuffer: ArrayBuffer | undefined = undefined; // 图片ArrayBuffer
@Prop @Watch('onChangeUrl') url: string = ''
@State isGranted: boolean = false
@State name: string = ''
build() {
Column() {
... ... @@ -34,14 +41,20 @@ export struct ImageDownloadComponent {
.backgroundColor(Color.Transparent)
.iconColor(Color.White)
.onClick(async () => {
console.info(`cj2024 onClick ${this.imageBuffer}`)
//console.info(`cj2024 onClick ${this.imageBuffer}`)
if (this.imageBuffer !== undefined) {
try {
await this.saveImage(this.imageBuffer);
promptAction.showToast({
message: $r('app.string.image_request_success'),
duration: 2000,
alignment:Alignment.Center
alignment: Alignment.Center
})
} catch (error) {
const err: BusinessError = error as BusinessError;
//console.info(`Failed to save photo. Code is ${err.code}, message is ${err.message}`);
promptAction.showToast({ message: '保存图片失败！' });
}
}
})
}
... ... @@ -55,10 +68,11 @@ export struct ImageDownloadComponent {
// 有网络
this.onChangeUrl()
}
}
async onChangeUrl(): Promise<void> {
console.info(`cj2024 图片下载 ${this.url}`)
//console.info(`cj2024 图片下载 ${this.url}`)
const context = getContext(this) as common.UIAbilityContext;
const atManager = abilityAccessCtrl.createAtManager();
await atManager.requestPermissionsFromUser(context, PERMISSIONS);
... ... @@ -73,7 +87,7 @@ export struct ImageDownloadComponent {
let httpRequest = http.createHttp();
// 用于订阅HTTP响应头事件
httpRequest.on('headersReceive', (header: Object) => {
console.info('header: ' + JSON.stringify(header));
//console.info('header: ' + JSON.stringify(header));
});
// 用于订阅HTTP流式响应数据接收事件
let res = new ArrayBuffer(0);
... ... @@ -83,18 +97,18 @@ export struct ImageDownloadComponent {
resView.set(new Uint8Array(res));
resView.set(new Uint8Array(data), res.byteLength);
res = newRes;
// console.info('dataReceive res length: ' + res.byteLength);
// //console.info('dataReceive res length: ' + res.byteLength);
});
// 用于订阅HTTP流式响应数据接收完毕事件
httpRequest.on('dataEnd', () => {
this.transcodePixelMap(res);
// 判断网络获取到的资源是否为ArrayBuffer类型
console.info(`dataEnd getPicture ${res}`)
//console.info(`dataEnd getPicture ${res}`)
if (res instanceof ArrayBuffer) {
console.info(`dataEnd getPicture`)
//console.info(`dataEnd getPicture`)
this.imageBuffer = res as ArrayBuffer;
}
console.info('No more data in response, data receive end');
//console.info('No more data in response, data receive end');
});
httpRequest.requestInStream(this.url,
(error: BusinessError, data: number) => {
... ... @@ -104,7 +118,7 @@ export struct ImageDownloadComponent {
message: $r('app.string.image_request_fail'),
duration: 2000
})
console.error(`http reqeust failed with. Code: ${error.code}, message: ${error.message}`);
//console.error(`http reqeust failed with. Code: ${error.code}, message: ${error.message}`);
return;
}
// 取消订阅HTTP响应头事件
... ... @@ -147,13 +161,39 @@ export struct ImageDownloadComponent {
* @returns
*/
async saveImage(buffer: ArrayBuffer | string): Promise<void> {
console.info(`cj2024 saveImage buffer ${buffer}`)
//console.info(`cj2024 saveImage buffer ${buffer}`)
if (!this.isGranted) {
//跳转权限设置
// const permissionUtil = new PermissionUtil();
PermissionUtil.reqPermissionsFromUser(['ohos.permission.READ_MEDIA'], this).then((res) => {
this.isGranted = res;
});
} else {
// PermissionUtil.openPermissionsInSystemSettings(this);
}
const context = getContext(this) as common.UIAbilityContext; // 获取getPhotoAccessHelper需要的context
const helper = photoAccessHelper.getPhotoAccessHelper(context); // 获取相册管理模块的实例
const uri = await helper.createAsset(photoAccessHelper.PhotoType.IMAGE, 'jpg'); // 指定待创建的文件类型、后缀和创建选项，创建图片或视频资源
console.info(`cj2024 saveImage uri ${uri}`)
const file = await fs.open(uri, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
await fs.write(file.fd, buffer);
await fs.close(file.fd);
// const helper = photoAccessHelper.getPhotoAccessHelper(context); // 获取相册管理模块的实例
// const uri = await helper.createAsset(photoAccessHelper.PhotoType.IMAGE, 'jpg'); // 指定待创建的文件类型、后缀和创建选项，创建图片或视频资源
// //console.info(`cj2024 saveImage uri ${uri}`)
// const file = await fs.open(uri, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
// await fs.write(file.fd, buffer);
// await fs.close(file.fd);
let media = mediaLibrary.getMediaLibrary(context);
let publicPath = await media.getPublicDirectory(mediaLibrary.DirectoryType.DIR_IMAGE);
let picName = DateTimeUtils.getCurDate(DateTimeUtils.PATTERN_DATE_TIME_DEFAULT) + '.jpg'
// //console.info(`cj2024 saveImage time ${picName}`)
let asset = await media.createAsset(mediaLibrary.MediaType.IMAGE, picName, publicPath);
if (asset) {
let fd = await asset.open('rw');
await fileIo.write(fd, buffer);
await asset.close(fd);
promptAction.showToast({ message: '已保存至相册！' });
} else {
promptAction.showToast({ message: '保存图片失败！' });
throw new Error('Failed to create asset');
}
}
}
\ No newline at end of file
... ...