android drawcircle能自定義邊框嗎

在Android中，drawCircle()方法本身不支持直接自定義邊框。但是，您可以通過以下步驟實現帶有自定義邊框的圓形：

1. 創建一個自定義的Drawable類，繼承自ShapeDrawable或GradientDrawable。在這個類中，您可以設置圓形的屬性，如顏色、大小和邊框寬度及顏色。

public class CustomCircleDrawable extends ShapeDrawable {
    private int borderWidth;
    private int borderColor;

    public CustomCircleDrawable(int radius, int borderWidth, int borderColor) {
        super(new RectF(-radius, -radius, radius, radius));
        this.borderWidth = borderWidth;
        this.borderColor = borderColor;
    }

    @Override
    protected void onDraw(Canvas canvas, Rect bounds) {
        Paint paint = getPaint();
        paint.setStyle(Paint.Style.STROKE);
        paint.setStrokeWidth(borderWidth);
        paint.setColor(borderColor);

        super.onDraw(canvas, bounds);
    }
}

2. 在您的Activity或Fragment中，使用這個自定義Drawable類繪制圓形。

CustomCircleDrawable customCircleDrawable = new CustomCircleDrawable(radius, borderWidth, borderColor);
Canvas canvas = new Canvas();
canvas.drawCircle(width / 2f, height / 2f, radius, customCircleDrawable);

這樣，您就可以創建一個帶有自定義邊框的圓形了。