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+package com.xunao.effectdemo.activity;
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+
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+import androidx.appcompat.app.AppCompatActivity;
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+import androidx.recyclerview.widget.LinearLayoutManager;
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+import androidx.recyclerview.widget.RecyclerView;
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+import androidx.recyclerview.widget.SimpleItemAnimator;
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+
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+import android.app.Activity;
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+import android.os.Bundle;
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+import android.util.Log;
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+import android.view.View;
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+import android.widget.Button;
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+import android.widget.Toast;
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+
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+import com.xunao.effectdemo.R;
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+import com.xunao.effectdemo.adapter.RolePlayAdapter;
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+import com.xunao.effectdemo.adapter.WordCutAdapter;
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+
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+import java.util.ArrayList;
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+import java.util.List;
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+import java.util.Objects;
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+import java.util.Random;
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+import java.util.Timer;
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+import java.util.TimerTask;
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+
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+public class RolePlayActivity extends Activity {
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+ private static final String TAG = "RolePlayActivity";
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+
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+ private Button btnStart;
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+ private RecyclerView rvMarquee;
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+ private RolePlayAdapter rolePlayAdapter;
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+ private List<String> roleList = new ArrayList<>();
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+
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+ // 跑马灯
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+ private boolean isGameRunning = false; //是否处于转动
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+ private boolean isTryToStop = false;//是否增速/减速
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+
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+ private int currentTotal = 0;
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+
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+ private static final int DEFAULT_SPEED = 150; //默认/最慢速度
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+ private static final int MIN_SPEED = 50;//最快速度
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+ private int currentSpeed = DEFAULT_SPEED;//当前速度
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+
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+ Timer timer = new Timer();
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+
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+ @Override
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+ protected void onCreate(Bundle savedInstanceState) {
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+ super.onCreate(savedInstanceState);
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+ setContentView(R.layout.activity_role_play);
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+ initView();
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+ }
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+
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+ private void initView(){
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+ btnStart = findViewById(R.id.btn_start);
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+ btnStart.setOnClickListener(new View.OnClickListener() {
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+ @Override
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+ public void onClick(View v) {
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+ int stayIndex = new Random().nextInt(6);
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+ Log.i(TAG, "stayIndex:" + stayIndex);
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+ startGame(stayIndex);
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+ }
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+ });
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+ rvMarquee = findViewById(R.id.rv_marquee);
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+ ((SimpleItemAnimator) Objects.requireNonNull(rvMarquee.getItemAnimator())).setSupportsChangeAnimations(false);
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+
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+ // 设置横向布局
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+ LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false){
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+ @Override
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+ public boolean canScrollHorizontally() {
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+ return false;
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+ }
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+ };
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+ rvMarquee.setLayoutManager(linearLayoutManager);
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+
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+ roleList.add("角色1");
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+ roleList.add("角色2");
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+ roleList.add("角色3");
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+ roleList.add("角色4");
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+ roleList.add("角色5");
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+ roleList.add("角色6");
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+
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+ rolePlayAdapter = new RolePlayAdapter(roleList, this);
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+ rvMarquee.setAdapter(rolePlayAdapter);
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+ }
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+
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+ //开始抽奖
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+ public void startGame(final int stayIndex) {
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+ if (isGameRunning) { //运动中
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+ return;
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+ }
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+ isGameRunning = true;
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+ isTryToStop = false;
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+ currentSpeed = DEFAULT_SPEED;
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+ new Thread(new Runnable() {
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+ @Override
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+ public void run() {
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+ while (isGameRunning) {
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+ try {
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+ Thread.sleep(getInterruptTime());
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+ } catch (InterruptedException e) {
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+ e.printStackTrace();
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+ }
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+
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+ // 防止线程多走了一次
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+ if (!isGameRunning) {
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+ return;
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+ }
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+ // 改变高亮项的索引
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+ runOnUiThread(() -> rolePlayAdapter.changeIndex());
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+ Log.i(TAG, "到" + roleList.get(rolePlayAdapter.getCurrentIndex()) + "--" + rolePlayAdapter.getCurrentIndex());
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+
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+ //减速&&速度达到最小&&当前view为指定view——停止
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+ if (isTryToStop && currentSpeed == DEFAULT_SPEED && stayIndex == rolePlayAdapter.getCurrentIndex()) {
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+ isGameRunning = false;
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+ Log.i(TAG, "结束：角色为" + roleList.get(rolePlayAdapter.getCurrentIndex()) + "--" + rolePlayAdapter.getCurrentIndex());
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+// listener.onShop(currentIndex);
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+ }
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+ }
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+ }
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+ }).start();
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+
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+ //五秒后开始减速
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+ timer.schedule(new TimerTask() {
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+ @Override
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+ public void run() {
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+ tryToStop();
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+ }
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+ }, 5000);
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+ }
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+
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+ //改变加速状态
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+ public void tryToStop() {
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+ isTryToStop = true;
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+ }
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+
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+ //获取sleep时间，即转盘运动速度，越小即越快。
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+ private long getInterruptTime() {
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+ currentTotal++;
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+ if (isTryToStop) {//减速直至恢复为默认速度
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+ currentSpeed += 10;
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+ if (currentSpeed > DEFAULT_SPEED) {
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+ currentSpeed = DEFAULT_SPEED;
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+ }
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+ } else {//增速直至最快速度
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+ //第一圈不做加速
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+ if (currentTotal / roleList.size() > 0) {
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+ currentSpeed -= 10;
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+ }
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+ if (currentSpeed < MIN_SPEED) {
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+ currentSpeed = MIN_SPEED;
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+ }
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+ }
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+ return currentSpeed;
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+ }
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+}
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