Setting Text to Image On Android and Adjudt the text font size based on the android resolution

1. Setting Text to Image On Android

2. Adjudt the text font size based on the android resolution

3. 文字居中： paint.setTextAlign(Align.CENTER);然后drawText的x坐标设置为width / 2即可

private float toPixel(Resources res, int dip)
{
float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
dip, res.getDisplayMetrics());
return px;
}

public Bitmap createBitmap(Bitmap src, String str)
{
DisplayMetrics metrics = new DisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(metrics);

int w = src.getWidth();
int h = src.getHeight();

int screenWidth = metrics.widthPixels;
int screenHeight = metrics.heightPixels;

int height = (int)960*68/screenHeight;
Bitmap bmpTemp = Bitmap.createBitmap(w, height, Config.ARGB_8888);
Canvas canvas = new Canvas(bmpTemp);
Paint p = new Paint();

Typeface font = Typeface.create(Typeface.DEFAULT,Typeface.BOLD);
p.setColor(Color.GRAY);
p.setTypeface(font);

int fontSize = (int)toPixel(getResources(),11);

p.setTextSize(fontSize);
p.setTextAlign(Align.CENTER);
canvas.drawBitmap(src, 0, 0, p);

int y = (int)960 *63/screenHeight;
int x = (int)screenWidth/10;

int adjustWidth = (int)(screenWidth/10 - (screenWidth - 5 *w)/10);

if (adjustWidth < x
&& adjustWidth > 0)
{
x = adjustWidth;
}

canvas.drawText(str,x , y, p);
canvas.save(Canvas.ALL_SAVE_FLAG);
canvas.restore();
return bmpTemp;
}