以下是一个使用react-image-crop实现的基本图片裁剪组件: importReact,{useState}from'react';importReactCropfrom'react-image-crop';import'react-image-crop/dist/ReactCrop.css';constImageCropperComponent=()=>{const[src,setSrc]=useState(null);const[crop,setCrop]=useState({aspect:16/9});const[croppedI...
import 'react-image-crop/dist/ReactCrop.css'; const ImageCropper = () => { const [src, setSrc] = useState(null); // To store the selected image const [crop, setCrop] = useState({ unit: '%', width: 30, aspect: 1 }); // Default crop options const [croppedImageUrl, setCropped...
importReact, { useState }from'react';importReactCropfrom'react-image-crop';import'react-image-crop/dist/ReactCrop.css';constImageCropperComponent= () => {const[src, setSrc] =useState(null);const[crop, setCrop] =useState({aspect:16/9});const[croppedImageUrl, setCroppedImageUrl] =useState(...
import'react-image-crop/dist/ReactCrop.css'// or scss:import'react-image-crop/src/ReactCrop.scss' Example importReactCrop,{typeCrop}from'react-image-crop'functionCropDemo({src}){const[crop,setCrop]=useState<Crop>()return(<ReactCropcrop={crop}onChange={c=>setCrop(c)}></ReactCrop>)} See...
npm install react-image-crop 使用示例: jsx import React, { useRef, useState } from 'react'; import ImageCrop from 'react-image-crop'; import 'react-image-crop/dist/ReactCrop.css'; const ImageCropper = () => { const [image, setImage] = useState(null); const imageRef = useRef...
image.png 这一块主要是利用了canvas和cropper的能力, 我们通过控制canvas对象的宽高比例, 和canvas提供的toBlob来实现图片的压缩, 核心代码如下: if (typeof cropper !== "undefined") { setCropData(cropper.getCroppedCanvas().toDataURL()); const rate = 1 / (4 - imgLevel); ...
declare module"react-native-image-picker"{//这个是操作ImagePicker的方法的回调信息(主要是操作界面被点击的信息和图片视屏的信息)interfaceResponse { customButton:string; didCancel: boolean; error:string; data:string; uri:string; origURL?:string; ...
<GestureHandlerRootView><Cropperphoto={photo}onCanceled={()=>setShowCropper(false)}onConfirmed={(path)=>displayCroppedImage(path)}/></GestureHandlerRootView> AddGestureDetectorfor the canvas. <GestureDetectorgesture={composed}><Canvasstyle={{flex:1}}></Canvas></GestureDetector> ...
(1).将 node_modules/react-native-image-crop-picker/ios/ImageCropPickerSDK 文件夹拖放的xcode项目根目录下 (2).单info选项卡 在Deployment Info标签下,设置Deployment Target平台版本为:8.0 (3).选择Embedded Binaries单击 + 并添加 RSKImageCropper.framework 和 QBImagePicker.framework ...
Camera=()=>{ImagePicker.openCamera({cropperActiveWidgetColor:'#36B7AB',//裁剪图像时,确定工具栏和其他UX元素的颜色。cropperStatusBarColor:'#36B7AB',//裁剪图像时,决定状态栏StatusBar颜色。cropperToolbarColor:'#36B7AB',//裁剪图像时,决定状态栏Toolbar颜色.cropperCircleOverlay:true,width:300,height...