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如何在IOS上使用nativescript摄像头和nativescript背景http上载图像

angular2-nativescript nativescript ios

0

trees_are_great · 技术社区 · 7 年前

nativescript-camera 具有 nativescript-background-http .

我将参数设置如下:

  var params = [{ name: "image", filename: fileUri, mimeType: 'application/octet-stream' }];

...

并发送请求:

let request = {
        url: this.API_URL + "/UploadOctetFile",
        method: "POST",
        headers: {
          "Authorization": accessTokenJson,
          "Content-Type": "application/octet-stream",
          "File-Name": imageName
        },  
        description: "{ 'uploading': " + imageName + " }"
      };

      return this.session.multipartUpload(params, request);

takePictrue.then((imageAsset: ImageAsset) => {

然后 imageAsset.android imageAsset.ios 这是一套。要获取文件URI,我使用以下代码:

        let manager = PHImageManager.defaultManager()
        let options = new PHImageRequestOptions();
        options.resizeMode = PHImageRequestOptionsResizeMode.Exact;
        options.deliveryMode = PHImageRequestOptionsDeliveryModeHighQualityFormat;

manager.requestImageForAssetTargetSizeContentModeOptionsResultHandler(imageAsset.ios,{width:2048,height:1536},PHImageContentModeAspectFill,选项,函数(结果,信息){ 让srcfilePath=info.objectForKey(“PHImageFileURLKey”).toString(); ... });

图像名称为IMG_1902.JPG

requestImageForAssetTargetSizeContentModeOptionsResultHandler .

我已经试过了建议的解决办法 here 要做:

 let fileUri = image.fileUri.replace("file://","");

"mimeType":"image/jpg" .

任何想法都非常感谢。

1 回复 | 直到 7 年前

1

0

James South 7 年前

山姆,这可能会有帮助。我做了以下操作来处理一个iOS用户从他们的图库中选择一张照片,以便稍后在应用程序中使用(Android与您的情况一样简单明了,但iOS返回一个相集):

import { ImageSource } from "image-source";
import { Image } from "tns-core-modules/ui/image";
import { path, knownFolders } from "tns-core-modules/file-system";

//iOS user picks photo...

const iosImg = new ImageSource();
iosImg.fromAsset(myPHAsset).then(imsr => {
  this.counter += 1; //class property to allow unique filenames
  const folder = knownFolders.documents();
  const path2 = path.join(folder.path, `Image${this.counter}.jpg`);
  const saved = imsr.saveToFile(path2, "jpg");
  const img = new Image();
  img.src = path2;
  this.data.changeImage(img); //Ng service to allow use of image in other components
});

{N} docs

{N} imagepicker #197

{N} imageUpload code