Android Canvas.drawRect绘制矩形

Android30

canvas.drawRect方法

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

演示

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);}@Overrideprotected 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);}}

示例代码

代码：地址

参考文档

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