ionic2 --拍照

1、安装ionic native插件

 git地址：     https://github.com/apache/cordova-plugin-camera

 $ ionic cordova plugin add cordova-plugin-camera
 $ npm install --save @ionic-native/camera

 2、在app.module.ts中声明插件

 import { Camera } from '@ionic-native/camera';

...

@NgModule({
  ...

  providers: [
    ...
    Camera
    ...
  ]
  ...
})
export class AppModule { }

3、使用

HTML：

< button ion-button ( click )= 'addPicture()' >选择图片 button >

TypeScript：

import { Camera } from '@ionic-native/camera' ;

import { ActionSheetController } from 'ionic-angular' ;

@ Component ({

  selector: 'page-mine' ,

  templateUrl: 'mine.html'

})

export class MinePage {

  images : Array <{ src : string }>;

  constructor (

  private camera : Camera ,

  public actionSheetCtrl : ActionSheetController ,

  ) {

  }

  openCamera ()：void {

   

        var srcType = this . camera . PictureSourceType . CAMERA ;

        var options = this . setOptions ( srcType );

       

        this . getOptions ( options );

      };

      openPic (){

        var srcType = this . camera . PictureSourceType . PHOTOLIBRARY ;

        var options = this . setOptions ( srcType );

       

        this . getOptions ( options );

      }

      setOptions ( srcType ){

        const options : CameraOptions = {

          quality: 100 ,

          destinationType: this . camera . DestinationType . DATA_URL ,

          encodingType: this . camera . EncodingType . JPEG ,

          allowEdit: true ,

          saveToPhotoAlbum: false ,

          sourceType:srcType ,

          mediaType: this . camera . MediaType . PICTURE

        };

        return options ;

      }

      getOptions ( options ){

        this . camera . getPicture ( options ). then (( imageData ) => {

          // imageData is either a base64 encoded string or a file URI

          // If it's base64:

          let base64Image = 'data:image/jpeg;base64,' + imageData ;

         this . images . unshift ({

           src:base64Image

         })

         }, ( err ) => {

          // Handle error

         });

      }

   

      addPicture () {

   

          let actionSheet = this . actionSheetCtrl . create ({

            title: '选择图片' ,

            buttons: [

              {

                text: '拍照' ,

                role: 'camera' ,

                handler: () => {

                  this . openCamera ();

                }

              },{

                text: '相册' ,

                handler: () => {

                  this . openPic ();

                }

              },{

                text: 'Cancel' ,

                role: 'cancel' ,

                handler: () => {

                  console . log ( 'Cancel clicked' );

                }

              }

            ]

          });

          actionSheet . present ();

        }

}

官方文档：https://ionicframework.com/docs/native/camera/