![](/img/trans.png)
[英]Cordova navigator.camera.getPicture returns FILE_URI in unexpected format on Android 4.4 KitKat from gallery
[英]ionic 4 (android) get image (OBJECT FILE) from gallery (FILE_URI) and upload via API
我正在嘗試使用Ionic v4 angular 和cordova實現一個簡單的應用程序。 只需選擇一張照片並將其上傳到解析服務器 (back4app.com) 即可。 但我做不到。
這是我的代碼:
主頁.ts
import { ParseService } from '../service/parse.service';
import { Camera, CameraOptions } from '@ionic-native/camera/ngx';
import { File } from '@ionic-native/file/ngx';
import { WebView } from '@ionic-native/ionic-webview/ngx';
selectPhoto() {
const options: CameraOptions = {
quality: 100,
sourceType: this.camera.PictureSourceType.PHOTOLIBRARY,
destinationType: this.camera.DestinationType.FILE_URI,
encodingType: this.camera.EncodingType.JPEG,
mediaType: this.camera.MediaType.PICTURE,
correctOrientation: true
}
this.camera.getPicture(options).then((imageData) => {
// imageData is either a base64 encoded string or a file URI
// If it's base64 (DATA_URL):
// let base64Image = 'data:image/jpeg;base64,' + imageData;
// console.log(imageData);
this.fileToUpload = imageData;
this.phototoshow = this.webview.convertFileSrc(imageData);
}, (err) => {
// Handle error
});
}
onSubmit() {
this.presentLoading();
// return this.apiService.upload(this.phototoshow).subscribe((data: any) => {
return this.apiService.upload(this.fileToUpload).subscribe((data: any) => {
console.log(data);
}
}
服務.ts
upload(img1): Observable<any> {
// console.log(data);
return this.http.post(this.apiURL + '/files/img.jpg', img1,{
headers: {
'X-Parse-Application-Id': this.APP_ID,
'X-Parse-REST-API-Key': this.REST_API_KEY,
'Content-Type':'image/jpeg'
}
})
.pipe(
retry(1),
catchError(this.handleError)
)
}
我能夠以表單中的“輸入類型=文件”上傳圖像......但是使用cordova插件相機從圖庫中選擇圖像......它只返回FILE_URI但我需要OBJECT FILE通過api rest上傳.
我在網上閱讀了足夠多的信息,但這些舊信息對我沒有幫助。 我希望有人能幫我解決這個問題。 謝謝
我設法解決了這個問題:
startUpload() {
this.file.resolveLocalFilesystemUrl(this.fileToUpload)
// this.file.resolveLocalFilesystemUrl(imgEntry.filePath)
.then(entry => {
(entry as FileEntry).file(file => this.readFile(file))
})
.catch(err => {
alert('Error while reading file.');
});
}
readFile(file: any) {
const reader = new FileReader();
reader.onload = () => {
const imgBlob = new Blob([reader.result], {
type: file.type
});
this.onSubmit(imgBlob);
};
reader.readAsArrayBuffer(file);
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.