Android Canvas.drawRect绘制矩形

public void drawRect(float left, float top, float right, float bottom, @NonNull Paint paint) { 
             super.drawRect(left, top, right, bottom, paint); } 

import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.util.AttributeSet; import android.view.View; import androidx.annotation.Nullable;  public class MyDrawRectView extends View { 
             public MyDrawRectView(Context context) { 
                 super(context);     }      public MyDrawRectView(Context context, @Nullable AttributeSet attrs) { 
                 super(context, attrs);
    }

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

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

        Paint mPaint = new Paint();
        mPaint.setColor(Color.BLUE);
// mPaint.setStyle(Paint.Style.STROKE); // 空心的，只有边框

        canvas.drawRect(0, 0, 500, 500, mPaint);
    }
}

代码：地址

Android Developers 中描述的 Canvas.drawRect方法，参考文档：地址