Android Canvas.drawString显示问题
我在SurfaceView上显示文本时遇到这个问题，一些字符可以爬到其他字符上，代码在这里：
private static void fakeDraw(Canvas c)
{
Paint mPaint = new Paint();
int color = 0xff000000;
mPaint.setColor(color);
mPaint.setStrokeWidth(2);
mPaint.setStyle(Style.FILL);
mPaint.setAntiAlias(true);
FontMetricsInt fm = mPaint.getFontMetricsInt();
int fh = Math.abs(fm.top);
int left = 0;
int top = 100;
Rect smallClip = new Rect(left, top-fh, left + 200, top + 30);
Rect bigClip = new Rect(0, 0, getW(), getH());
c.drawRect(bigClip, mPaint);
String text1 = "Evi";
String text2 = ">>";
String text3 = "Tom";
color = 0xff303030;
mPaint.setColor(color);
c.drawRect(smallClip, mPaint);
color = 0xffffffff;
mPaint.setColor(color);
c.drawText(text1, left, top, mPaint);
Rect bounds = new Rect();
mPaint.getTextBounds(text1, 0, text1.length(), bounds);
left += bounds.width();
c.drawText(text2, left, top, mPaint);
left -= bounds.width();
top += 12;
c.drawText(text3, left, top, mPaint);
mPaint.getTextBounds(text3, 0, text3.length(), bounds);
left += bounds.width();
c.drawText(text2, left, top, mPaint);
}
在第二个文本Tom>>的情况下全部显示正确，但第一个文本 Evi>>不是。问题是字符>>在 Evi 绘制空间中绘制（最后一个字符“i”）！可以看看是否放大图片，我做错了什么以及如何解决这个问题？
屏幕截图可以在这里找到： http://img192.imageshack.us/img192/2782 /imagexs.png
I encounter this problem when displaying text on SurfaceView, some chars can climb up on others, code is here:
private static void fakeDraw(Canvas c)
{
Paint mPaint = new Paint();
int color = 0xff000000;
mPaint.setColor(color);
mPaint.setStrokeWidth(2);
mPaint.setStyle(Style.FILL);
mPaint.setAntiAlias(true);
FontMetricsInt fm = mPaint.getFontMetricsInt();
int fh = Math.abs(fm.top);
int left = 0;
int top = 100;
Rect smallClip = new Rect(left, top-fh, left + 200, top + 30);
Rect bigClip = new Rect(0, 0, getW(), getH());
c.drawRect(bigClip, mPaint);
String text1 = "Evi";
String text2 = ">>";
String text3 = "Tom";
color = 0xff303030;
mPaint.setColor(color);
c.drawRect(smallClip, mPaint);
color = 0xffffffff;
mPaint.setColor(color);
c.drawText(text1, left, top, mPaint);
Rect bounds = new Rect();
mPaint.getTextBounds(text1, 0, text1.length(), bounds);
left += bounds.width();
c.drawText(text2, left, top, mPaint);
left -= bounds.width();
top += 12;
c.drawText(text3, left, top, mPaint);
mPaint.getTextBounds(text3, 0, text3.length(), bounds);
left += bounds.width();
c.drawText(text2, left, top, mPaint);
}
In the case of a second text Tom>> all displayed correctly, but the first text Evi>> not. The problem is that the chars >> draws in Evi draw space(last char "i")!! It is possible to see if you zoom the picture, what am I doing wrong and how to fix this?
screen shot can be found here: http://img192.imageshack.us/img192/2782/imagexs.png
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评论（2）
嗯，尝试指定特定的 x / y 坐标？使用数字而不是预定义的字符串？给出“>>”其绘制空间的不同坐标。
Hm, Try specifying particular x / y co-ords? with numbers rather than pre defined strings? give the ">>" different coordinates for it's draw space.
只需手动添加一些空格
或在 text2 开头添加一个空格字符 (" ")
just add some space manually
or add a space char (" ") at start of text2