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update方法能否提供一个绘制完成回调 #69

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WozHuang opened this issue Apr 10, 2019 · 0 comments

WozHuang commented Apr 10, 2019

业务需要在小程序中使用cax生成分享图，但是在调用update方法后立即使用wx.canvasToTempFilePath生成不了图片，等待一段时间后就能生成成功，不知道是什么原因，希望update绘制完成后能够给一个回调方便生成图片

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