291_自定义可点击表格

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自定义可点击表格

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (widthMeasureSpec < heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, widthMeasureSpec);
} else {
super.onMeasure(heightMeasureSpec, heightMeasureSpec);
}
width = getWidth();
height = getHeight();
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(Color.BLACK);

//给一个可变的数量
num = 5;
all = (float) width;
single = all / num;

//创建集合配合坐标数据
list = new ArrayList<>();
for (int i = 0; i < num; i++) {
for (int j = 0; j < num; j++) {
Entity entity = new Entity();
entity.key = i;
entity.value = j;
list.add(entity);
entity.position = list.size() - 1;
}
}
}

@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
float x = event.getX();
float y = event.getY();

xCount = 0;
yCount = 0;

for (int i = 0; i < num; i++) {
x = x - single;
if (x < 0) {
break;
} else {
xCount++;
}
}

for (int i = 0; i < num; i++) {
y = y - single;
if (y < 0) {
break;
} else {
yCount++;
}
}

break;
case MotionEvent.ACTION_UP:

for (Entity entity : list) {
if (entity.key == xCount && entity.value == yCount) {
int position = entity.position;

}
}

invalidate();

break;
}
return true;
}

@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
//先画出横排的线
for (int i = 0; i < num; i++) {
float startX = width / num * (i + 1);
float startY = 0;
float stopX = width / num * (i + 1);
float stopY = height;
canvas.drawLine(startX, startY, stopX, stopY, paint);
}

//再画出竖排的线
for (int i = 0; i < num; i++) {
float startX2 = 0;
float startY2 = height / num * (i + 1);
float stopX2 = width;
float stopY2 = height / num * (i + 1);
canvas.drawLine(startX2, startY2, stopX2, stopY2, paint);
}

paint.setColor(Color.RED);
float x = (xCount + 1) * (single) - (single / 2.0f);
float y = (yCount + 1) * (single) - (single / 2.0f);
canvas.drawCircle(x, y, 20, paint);
paint.setColor(Color.BLACK);

}

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