创建一个空的位图和图纸虽然Android的画布 [英] creating an empty bitmap and drawing though canvas in android

问题描述

我想创建一个空的位图，并设置画布的位图，然后绘制任何形状的位图。

I'd like to create an empty bitmap and set canvas to that bitmap and then draw any shape on bitmap.

推荐答案

这是可能比你想更简单：

This is probably more simple than you're thinking:

int w = WIDTH_PX, h = HEIGHT_PX;

Bitmap.Config conf = Bitmap.Config.ARGB_8888; // see other conf types
Bitmap bmp = Bitmap.createBitmap(w, h, conf); // this creates a MUTABLE bitmap
Canvas canvas = new Canvas(bmp);

// ready to draw on that bitmap through that canvas

下面是一个系列教程，我的话题发现：用帆布系列<绘图/一>

Here's a series of tutorial I've found on the topic: Drawing with Canvas Series

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