Android九宫格抽奖

package cq.cake.luckdraw;

import android.graphics.Color;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

import java.util.LinkedList;
import java.util.List;
import java.util.Random;

public class MainActivity extends AppCompatActivity {
    private TextView tv1;
    private TextView tv2;
    private TextView tv3;
    private TextView tv4;
    private TextView tvStart;
    private TextView tv5;
    private TextView tv6;
    private TextView tv7;
    private TextView tv8;
    private TextView tvNotice;

    private List views = new LinkedList<>();//所有的视图
    private int timeC= 100;//变色时间间隔
    private int lightPosition = 0;//当前亮灯位置,从0开始
    private int runCount = 10;//需要转多少圈
    private int lunckyPosition = 4;//中奖的幸运位置,从0开始

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();
    }

    private void init() {
        tv1 = (TextView) findViewById(R.id.tv1);
        tv2 = (TextView) findViewById(R.id.tv2);
        tv3 = (TextView) findViewById(R.id.tv3);
        tv4 = (TextView) findViewById(R.id.tv4);
        tv5 = (TextView) findViewById(R.id.tv5);
        tv6 = (TextView) findViewById(R.id.tv6);
        tv7 = (TextView) findViewById(R.id.tv7);
        tv8 = (TextView) findViewById(R.id.tv8);
        tvStart = (TextView) findViewById(R.id.tvStart);
        tvNotice = (TextView) findViewById(R.id.tv_notice);
        views.add(tv1);
        views.add(tv2);
        views.add(tv3);
        views.add(tv4);
        views.add(tv5);
        views.add(tv6);
        views.add(tv7);
        views.add(tv8);

        try {
            tvStart.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    tvStart.setClickable(false);
                    tvStart.setEnabled(false);
                    tvNotice.setText("");
                    runCount = 10;
                    timeC = 100;
                    views.get(lunckyPosition).setBackgroundColor(Color.TRANSPARENT);
                    lunckyPosition = randomNum(0,7);
                    new TimeCount(timeC*9,timeC).start();

                }
            });
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    /**
     * 生成随机数
     * @param minNum
     * @param maxNum
     * @return
     */
    private int randomNum(int minNum,int maxNum) {
        int max = maxNum;
        int min = minNum;
        Random random = new Random();
        return random.nextInt(max)%(max-min+1) + min;
    }

    class TimeCount extends CountDownTimer{
        public TimeCount(long millisInFuture, long countDownInterval) {
            super(millisInFuture, countDownInterval);
            lightPosition = 0;
        }

        @Override
        public void onTick(long millisUntilFinished) {

            Log.i(">>>","---"+lightPosition);
            //如果是最后一次滚动
            if (runCount>0){
                if (lightPosition>0){
                    views.get(lightPosition-1).setBackgroundColor(Color.TRANSPARENT);
                }
                if (lightPosition<8){
                    views.get(lightPosition).setBackgroundColor(Color.RED);
                }

            }else if (runCount==0){

                if (lightPosition<=lunckyPosition){
                    if (lightPosition>0){
                        views.get(lightPosition-1).setBackgroundColor(Color.TRANSPARENT);
                    }
                    if (lightPosition<8){
                        views.get(lightPosition).setBackgroundColor(Color.RED);
                    }
                }
            }

            lightPosition++;
        }
        @Override
        public void onFinish() {
            Log.i(">>>","onFinish=="+runCount);
            //如果不是最后一圈，需要还原最后一块的颜色
            TextView tvLast= views.get(7);
            if (runCount!=0){
                tvLast.setBackgroundColor(Color.TRANSPARENT);
                //最后几转速度变慢
                if (runCount<3) timeC += 200;
                new TimeCount(timeC*9,timeC).start();
                runCount--;
            }
            //如果是最后一圈且计时也已经结束
            if (runCount==0&&lightPosition==8){
                tvStart.setClickable(true);
                tvStart.setEnabled(true);
                tvNotice.setText("恭喜你抽中: "+views.get(lunckyPosition).getText().toString());
                if (lunckyPosition!=views.size())
                    tvLast.setBackgroundColor(Color.TRANSPARENT);

            }

        }
    }

}

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="cq.cake.luckdraw.MainActivity">
    <LinearLayout
        android:id="@+id/layout1"
        android:layout_above="@+id/layout2"
        android:layout_width="match_parent"
        android:layout_height="100dp">
        <TextView
            android:text="奖品1"
            style="@style/TextViewLuckDraw"
            android:id="@+id/tv1"/>
        <TextView
            android:text="奖品2"
            style="@style/TextViewLuckDraw"
            android:id="@+id/tv2"/>
        <TextView
            android:text="奖品3"
            style="@style/TextViewLuckDraw"
            android:id="@+id/tv3"/>

    LinearLayout>
    <LinearLayout
        android:id="@+id/layout2"
        android:layout_centerInParent="true"
        android:layout_width="match_parent"
        android:layout_height="100dp">
        <TextView
            android:text="奖品8"
            style="@style/TextViewLuckDraw"
            android:id="@+id/tv8"/>
        <TextView
            android:textSize="20sp"
            android:text="开始抽奖"
            style="@style/TextViewLuckDraw"
            android:id="@+id/tvStart"/>
        <TextView
            android:text="奖品4"
            style="@style/TextViewLuckDraw"
            android:id="@+id/tv4"/>
    LinearLayout>
    <LinearLayout
        android:id="@+id/layout3"
        android:layout_below="@+id/layout2"
        android:layout_width="match_parent"
        android:layout_height="100dp">
        <TextView
            android:text="奖品7"
            style="@style/TextViewLuckDraw"
            android:id="@+id/tv7"/>
        <TextView
            android:text="奖品6"
            style="@style/TextViewLuckDraw"
            android:id="@+id/tv6"/>
        <TextView
            android:text="奖品5"
            style="@style/TextViewLuckDraw"
            android:id="@+id/tv5"/>

    LinearLayout>

    <TextView
        android:layout_marginTop="16dp"
        android:textSize="20sp"
        android:gravity="center"
        android:textColor="@color/colorAccent"
        android:layout_below="@+id/layout3"
        android:id="@+id/tv_notice"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>


RelativeLayout>