const context = uni.createCanvasContext(canvasIds, _this);
context.drawImage(imageResource, dx, dy, dWidth, dHeight);
使用canvas绘制图像到画布，安卓机下载的图片颜色失真，ios没有遇到这种问题，请问是为什么？
相关问题
相关文档
- Canvas.getContext: 小程序/开发/API/画布/Canvas/Canvas.getContext
- Canvas.getContext#参数: 小程序/开发/API/画布/Canvas/Canvas.getContext
- Canvas.getContext#功能描述: 小程序/开发/API/画布/Canvas/Canvas.getContext
- Canvas.getContext#返回值: 小程序/开发/API/画布/Canvas/Canvas.getContext
- Canvas.cancelAnimationFrame: 小程序/开发/API/画布/Canvas/Canvas.cancelAnimationFrame
上个demo看看
封装的方法:export const _onDraw = async ( _this, canvasIds, params, callback)=>{const context = uni.createCanvasContext(canvasIds, _this);context.drawImage(imageResource, dx, dy, dWidth, dHeight);context.draw(true, async () => {const tempFilePathRes = await canvasToTempFilePath(canvasIds, _this)callback(tempFilePathRes.tempFilePath)})}调用:_onDraw( _this, 'canvas', { nodeList: list }, (n) => {if (n) {uni.hideLoading();this.setData({shareImageUrl: n}, () => {this._onDownload()})}});