将文本转换为Android上的图像文件 [英] Convert text to image file on Android

问题描述

我有一个文本文件（.txt）中。我想将其转换为图像文件（.png或.jpg）。例如，黑色文本在白色背景。我怎样才能做到这一点编程？

I have a text document (.txt). I want to convert it to an image (.png or .jpg). For example, black text on white background. How can I do that programmatically?

推荐答案

这（未经测试）code应该让你在正确的轨道。

this (untested) code should get you on the right track.

void foo(final String text) throws IOException{
    final Paint textPaint = new Paint() {
        {
            setColor(Color.WHITE);
            setTextAlign(Paint.Align.LEFT);
            setTextSize(20f);
            setAntiAlias(true);
        }
    };
    final Rect bounds = new Rect();
    textPaint.getTextBounds(text, 0, text.length(), bounds);

    final Bitmap bmp = Bitmap.createBitmap(bounds.width(), bounds.height(), Bitmap.Config.RGB_565); //use ARGB_8888 for better quality
    final Canvas canvas = new Canvas(bmp);
    canvas.drawText(text, 0, 20f, textPaint);
    FileOutputStream stream = new FileOutputStream(...); //create your FileOutputStream here
    bmp.compress(CompressFormat.PNG, 85, stream);
    bmp.recycle();
    stream.close();
}

这篇关于将文本转换为Android上的图像文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！