自定义View 之 圆形

自定义View 圆形

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

/**
 * @Auther: djYan
 * @Date: 2019/2/22 14:32:31
 * @Description:
 */
public class MyCircles extends View {

    private int measuredHeight;
    private int measuredWidth;

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


    public MyCircles(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        measuredHeight = getMeasuredHeight();
        measuredWidth = getMeasuredWidth();
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        Paint paint = new Paint();
        canvas.drawCircle(measuredWidth / 2, measuredHeight / 2, 100, paint);
    }
}