app/src/main/java/com/geekholt/practiceui/view/lesson2/Practice10StrokeJoinView.java

package com.geekholt.practiceui.view.lesson2;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.util.AttributeSet;
import android.view.View;

import androidx.annotation.Nullable;

public class Practice10StrokeJoinView extends View {
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    Path path = new Path();

    public Practice10StrokeJoinView(Context context) {
        super(context);
    }

    public Practice10StrokeJoinView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public Practice10StrokeJoinView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    {
        paint.setStrokeWidth(40);
        paint.setStyle(Paint.Style.STROKE);

        path.rLineTo(200, 0);
        path.rLineTo(-160, 120);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);


        canvas.save();
        // 使用 Paint.setStrokeJoin() 来设置不同的拐角形状
        canvas.translate(100, 100);
        // 第一种形状：MITER
        paint.setStrokeJoin(Paint.Join.MITER);
        canvas.drawPath(path, paint);

        canvas.translate(300, 0);
        // 第二种形状：BEVEL
        paint.setStrokeJoin(Paint.Join.BEVEL);
        canvas.drawPath(path, paint);

        canvas.translate(300, 0);
        // 第三种形状：ROUND
        paint.setStrokeJoin(Paint.Join.ROUND);
        canvas.drawPath(path, paint);

        canvas.restore();

    }
}