我自己想到了......所描述的行为似乎是known issue。我想这是因为每条路径都被看作是一个独立的“轮廓”,而这个轮廓不能与另一条路径合并。
但是我能够通过简单的“黑客”获得所需的行为。但这只适用于基于行的路径。下面的代码(小例子),只是如果任何人的兴趣......
public class MyPath extends Path {
private ArrayList<Float> points = new ArrayList<Float>();
public void addPath(MyPath src) {
this.points.addAll(src.getPoints());
super.rewind();
super.moveTo(this.points.get(0), this.points.get(1));
for (int i = 2; i < this.points.size(); i += 2) {
super.lineTo(this.points.get(i), this.points.get(i+1));
}
}
@Override
public void moveTo(float x, float y) {
this.points.add(x);
this.points.add(y);
super.moveTo(x, y);
}
@Override
public void lineTo(float x, float y) {
this.points.add(x);
this.points.add(y);
super.lineTo(x, y);
}
public ArrayList<Float> getPoints() {
return this.points;
}
}
的这种用法很简单:
MyPath p1 = new MyPath();
MyPath p2 = new MyPath();
p1.moveTo(0,0); p1.lineTo(200,200);
p2.moveTo(200,200); p2.lineTo(400,0);
p1.addPath(p2); //merge
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(Color.BLACK);
paint.setTextSize(40);
canvas.drawColor(Color.WHITE);
canvas.drawTextOnPath("Lorem ipsum dolor sit amet", p1, 0, 0, paint);
我已经想到了这一点,但我不得不重写我的应用程序的整个逻辑,以便只使用一个路径。那么,如果没有人有解决方案的几个路径,我将不得不咬住子弹......;) – Aletheios 2012-08-02 01:10:20
我明白了。也许这可以帮助:http://www.java2s.com/Code/Android/2D-Graphics/Drawtextalongwithpath.htm – 0gravity 2012-08-02 01:15:22