简书链接:androidtext转drawable做前景色
文章字数：48,阅读全文大约需要1分钟

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
  public static BitmapDrawable bitmapText2Drawable(Context context,String text,int fontSize,int textColor,int backcolor) {
        // 创建一个 Paint 对象
        Paint paint = new Paint();
        paint.setColor(textColor);
        paint.setAntiAlias(true);
        paint.setTextSize(DensityUtil.sp2px(context,fontSize));  // 设置字体大小为 14sp

// 计算文本的宽度和高度
        float textWidth = paint.measureText(text);
        Paint.FontMetrics fontMetrics = paint.getFontMetrics();
        float textHeight = fontMetrics.bottom - fontMetrics.top;


        int canvasWidth = (int) Math.ceil(textWidth);
        int canvasHeight = (int) Math.ceil(textHeight);


        Bitmap bitmap = Bitmap.createBitmap(canvasWidth, canvasHeight, Bitmap.Config.ARGB_8888);

        Canvas canvas = new Canvas(bitmap);
        canvas.drawColor(backcolor);

        float x = 0;
        float y = -fontMetrics.top;
        canvas.drawText(text, x, y, paint);

        BitmapDrawable bitmapDrawable = new BitmapDrawable(context.getResources(), bitmap);
        return bitmapDrawable;
    }
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
public static BitmapDrawable bitmapText2Drawable(Context context, String text, int fontSize, int textColor, int backcolor, int paddingTop, int paddingBottom, int paddingLeft, int paddingRight) {
      Paint paint = new Paint();
      paint.setTextSize(fontSize);
      paint.setColor(textColor);
      paint.setAntiAlias(true);
      paint.setTextAlign(Paint.Align.LEFT);
      int width = (int) paint.measureText(text);
      int height = (int) (paint.descent() - paint.ascent());
      Bitmap bitmap = Bitmap.createBitmap(width + paddingLeft + paddingRight, height + paddingTop + paddingBottom, Bitmap.Config.ARGB_8888);
      Canvas canvas = new Canvas(bitmap);
      canvas.drawColor(backcolor);
      canvas.drawText(text, paddingLeft, height - paint.descent() + paddingTop, paint);
      return new BitmapDrawable(context.getResources(), bitmap);
  }