Android Canvas drawText实现中文垂直居中

public

void
onDraw (Canvas canvas) {

Rect targetRect = new Rect(50, 50, 1000, 200);

Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);

paint.setStrokeWidth(3);

paint.setTextSize(80);

String testString = “Text:中文asdfghjkl”;

paint.setColor(Color.CYAN);

canvas.drawRect(targetRect, paint);

paint.setColor(Color.RED);

FontMetricsInt fontMetrics = paint.getFontMetricsInt();

int baseline = targetRect.top + (targetRect.bottom – targetRect.top – fontMetrics.bottom + fontMetrics.top) / 2 – fontMetrics.top;

// 以下这行是实现水平居中。drawText相应改为传入targetRect.centerX()

paint.setTextAlign(Paint.Align.CENTER);

canvas.drawText(testString, targetRect.centerX(), baseline, paint);

}