本文实例为大家分享了Android实现九宫格抽奖的具体代码，供大家参考，具体内容如下
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<TextView> 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);
}
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<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>
