在Android中实现自定义View绘制不规则图形,核心在于灵活运用Canvas
、Path
和Paint
类的组合。以下是具体实现步骤和关键方法:
1. 创建自定义View类
继承View
并初始化画笔和路径对象:
java
public class CustomShapeView extends View {private Paint paint;private Path path;public CustomShapeView(Context context, AttributeSet attrs) {super(context, attrs);init();}private void init() {paint = new Paint();paint.setColor(Color.BLUE);paint.setStyle(Paint.Style.FILL); // 设置填充模式path = new Path();}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);// 在此处绘制路径canvas.drawPath(path, paint);}
}
关键点:通过Paint
设置颜色和填充样式,Path
用于定义图形轮廓
2. 使用Path定义不规则路径
Path
类提