1、优化退到后台再回到主界面会无声的问题

2、保证NetworkUtils只初始化一次

app/src/main/java/com/bgycc/smartcanteen/RootApp.java

@@ -6,6 +6,7 @@ import androidx.annotation.NonNull;
 import androidx.work.Configuration;
 
 import com.bgycc.smartcanteen.executor.SCTaskExecutor;
+import com.bgycc.smartcanteen.utils.NetworkUtils;
 import com.blankj.utilcode.util.CrashUtils;
 import com.blankj.utilcode.util.LogUtils;
 import com.blankj.utilcode.util.PathUtils;
@@ -31,6 +32,7 @@ public class RootApp extends Application implements Configuration.Provider {
                 .setBorderSwitch(false)
                 .setFilePrefix(LOG_PREFIX)
                 .setSaveDays(LOG_SAVE_DAYS);
+        NetworkUtils.initialize(this);
     }
 
     @NonNull

app/src/main/java/com/bgycc/smartcanteen/activity/MainActivity.java

@@ -97,7 +97,6 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         deviceSN = SmartCanteenUtils.getDeviceSN(newBase.getApplicationContext());
         audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
         TTSHelper.initialize(newBase.getApplicationContext());
-        NetworkUtils.initialize(newBase.getApplicationContext());
 
         if (deviceSN.isEmpty()) {
             LogUtils.file(TAG, "设备SN号为空");

app/src/main/java/com/bgycc/smartcanteen/utils/TTSHelper.java

@@ -19,10 +19,10 @@ import static com.bgycc.smartcanteen.utils.SmartCanteenUtils.TAG;
 public class TTSHelper {
     private static boolean mSupportTTS = false;
     private static TextToSpeech mTTS = null;
-    private static final SoundPool mSoundPool;
+    private static SoundPool mSoundPool;
     private static final HashMap<String, Integer> mSoundIdMap = new HashMap<>();
 
-    static {
+    public static void initialize(Context context) {
         AudioAttributes audioAttributes = new AudioAttributes.Builder()
                 .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                 .setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
@@ -31,9 +31,6 @@ public class TTSHelper {
         mSoundPool = new SoundPool.Builder()
                 .setAudioAttributes(audioAttributes)
                 .build();
-    }
-
-    public static void initialize(Context context) {
         mSoundPool.setOnLoadCompleteListener((soundPool, sampleId, status) -> {
             if (status == 0) {
                 soundPool.play(sampleId, 1f, 1f, 100, 0, 1f);
@@ -45,6 +42,7 @@ public class TTSHelper {
                 mSupportTTS = result >= TextToSpeech.LANG_AVAILABLE;
             }
         });
+        mSoundIdMap.clear();
     }
 
     public static void speak(String msg) {