先在布局中写
<com.luyao.dell.yuan.YurnTableView
android:layout_width="match_parent"
android:layout_height="match_parent" />
然后在定义一个class
不用再MainActivity里写东西
public class YurnTableView extends View implements View.OnClickListener {
private Paint paint;
private int widthPixels;
private int heightPixels;
private int centerX;
private int centerY;
private int[] colors;
private String[] desc = new String[]{"女生", "性感", "知性", "聪明", "贤惠", "真好"};
private RotateAnimation rotateAnimation;
private boolean isRote;
public YurnTableView(Context context) {
this(context, null);
}
public YurnTableView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs, -1);
}
public YurnTableView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
widthPixels = displayMetrics.widthPixels;
heightPixels = displayMetrics.heightPixels;
centerX = widthPixels / 2;
centerY = heightPixels / 2;
init(context);
colors = new int[]{Color.BLUE, Color.GRAY, Color.GREEN, Color.GRAY, Color.BLACK, Color.YELLOW};
//初始化旋转动画
initAnimation();
this.setOnClickListener(this);
}
private void initAnimation() {
rotateAnimation = new RotateAnimation(0, 360, centerX, centerY);
rotateAnimation.setDuration(800);
rotateAnimation.setFillAfter(true);
rotateAnimation.setRepeatCount(-1);
rotateAnimation.setInterpolator(new LinearInterpolator());
rotateAnimation.setRepeatMode(Animation.RESTART);
}
private void init(Context context) {
paint = new Paint();
paint.setColor(Color.RED);
paint.setStrokeWidth(20);
paint.setStyle(Paint.Style.FILL);
paint.setAntiAlias(true);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(600, 600);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
//移动画布的坐标原点
canvas.translate(centerX, centerY);
//画6个圆弧
RectF rectF = new RectF(-300, -300, 300, 300);
float start = 60;
for (int i = 0; i < 6; i++) {
paint.setColor(colors[i]);
canvas.drawArc(rectF, start * i, 60, true, paint);
}
//中心的那个圆
paint.setColor(Color.RED);
canvas.drawCircle(0, 0, 100, paint);
paint.setColor(Color.WHITE);
paint.setTextSize(40);
//获取文字宽度和高度
Rect rect = new Rect();
paint.getTextBounds("start", 0, 5, rect);
int width = rect.width();
int height = rect.height();
canvas.drawText("start", -width / 2, height / 2, paint);
//绘制圆上的描述信息
RectF rectF1 = new RectF(-200, -200, 200, 200);
for (int i = 0; i <6; i++) {
paint.setColor(Color.WHITE);
Path path = new Path();
path.addArc(rectF1, start * i + 15, 60);
canvas.drawTextOnPath(desc[i], path, 0, 0, paint);
}
}
//点击事件
@Override
public void onClick(View view) {
if (isRote) {
stopAnima();
setRoundDom();
} else {
startAnima();
}
}
private void startAnima() {
isRote = true;
startAnimation(rotateAnimation);
}
private void stopAnima() {
isRote = false;
clearAnimation();
}
//给一个随机的抽奖结果
private void setRoundDom() {
double random = Math.random();
RotateAnimation rotateAnimation = new RotateAnimation(0, (float) (360 * random), centerX, centerY);
rotateAnimation.setDuration(100);
rotateAnimation.setFillAfter(true);
startAnimation(rotateAnimation);
}
}