質問編集履歴
1
ballクラス（ボール）とHoleクラス（ゴール地点）についてのコードを追記しました。
title
CHANGED
|
File without changes
|
body
CHANGED
|
@@ -147,6 +147,48 @@
|
|
|
147
147
|
|
|
148
148
|
```
|
|
149
149
|
|
|
150
|
+
```Java
|
|
151
|
+
public class Ball extends View {
|
|
152
|
+
int x, y, radius;
|
|
153
|
+
float vx, vy;
|
|
154
|
+
Paint paint;
|
|
155
|
+
|
|
156
|
+
public Ball(Context context) {
|
|
157
|
+
super(context);
|
|
158
|
+
radius = 90;
|
|
159
|
+
vx = vy = x = y = 0;
|
|
160
|
+
paint = new Paint();
|
|
161
|
+
paint.setColor(Color.WHITE);
|
|
162
|
+
paint.setStyle(Paint.Style.FILL);
|
|
163
|
+
}
|
|
164
|
+
protected void onDraw(Canvas canvas){
|
|
165
|
+
super.onDraw(canvas);
|
|
166
|
+
canvas.drawCircle(x, y, radius, paint);
|
|
167
|
+
}
|
|
168
|
+
}
|
|
169
|
+
```
|
|
170
|
+
```Java
|
|
171
|
+
public class Hole extends View {
|
|
172
|
+
int x, y, r;
|
|
173
|
+
Paint p;
|
|
174
|
+
|
|
175
|
+
public Hole(Context context){
|
|
176
|
+
super(context);
|
|
177
|
+
x = y = 0;
|
|
178
|
+
r = 100;
|
|
179
|
+
p = new Paint();
|
|
180
|
+
p.setColor(Color.BLACK);
|
|
181
|
+
p.setStyle(Paint.Style.FILL);
|
|
182
|
+
p.setAntiAlias(true);
|
|
183
|
+
}
|
|
184
|
+
protected void onDraw(Canvas canvas) {
|
|
185
|
+
super.onDraw(canvas);
|
|
186
|
+
canvas.drawCircle(x, y, r, p);
|
|
187
|
+
}
|
|
188
|
+
}
|
|
189
|
+
```
|
|
190
|
+
|
|
191
|
+
|
|
150
192
|
```Java(activity_main.xml)
|
|
151
193
|
<?xml version="1.0" encoding="utf-8"?>
|
|
152
194
|
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
|