Cleanup codes

Signed-off-by: cjybyjk <cjybyjk@gmail.com>
diff --git a/app/src/main/java/org/exthmui/game/qs/DNDTile.java b/app/src/main/java/org/exthmui/game/qs/DNDTile.java
index 6cf3597..8172c66 100644
--- a/app/src/main/java/org/exthmui/game/qs/DNDTile.java
+++ b/app/src/main/java/org/exthmui/game/qs/DNDTile.java
@@ -17,11 +17,6 @@
 package org.exthmui.game.qs;
 
 import android.content.Context;
-import android.content.Intent;
-import android.os.Bundle;
-import android.view.View;
-
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 
 import org.exthmui.game.R;
 import org.exthmui.game.misc.Constants;
diff --git a/app/src/main/java/org/exthmui/game/receiver/GamingBroadcastReceiver.java b/app/src/main/java/org/exthmui/game/receiver/GamingBroadcastReceiver.java
index 4d1fa18..05c0aff 100644
--- a/app/src/main/java/org/exthmui/game/receiver/GamingBroadcastReceiver.java
+++ b/app/src/main/java/org/exthmui/game/receiver/GamingBroadcastReceiver.java
@@ -20,7 +20,6 @@
 import android.content.Context;
 import android.content.Intent;
 import android.os.UserHandle;
-import android.util.Log;
 
 import org.exthmui.game.misc.Constants;
 import org.exthmui.game.services.GamingService;
diff --git a/app/src/main/java/org/exthmui/game/services/DanmakuService.java b/app/src/main/java/org/exthmui/game/services/DanmakuService.java
index 906776c..f317f53 100644
--- a/app/src/main/java/org/exthmui/game/services/DanmakuService.java
+++ b/app/src/main/java/org/exthmui/game/services/DanmakuService.java
@@ -35,6 +35,8 @@
 
 public class DanmakuService extends NotificationListenerService {
 
+    private static final String TAG = "DanmakuService";
+
     private Map<String, String> mLastNotificationMap = new HashMap<>();
 
     private int filterThreshold = 3;
diff --git a/app/src/main/java/org/exthmui/game/services/GamingService.java b/app/src/main/java/org/exthmui/game/services/GamingService.java
index 28aac46..6265df0 100644
--- a/app/src/main/java/org/exthmui/game/services/GamingService.java
+++ b/app/src/main/java/org/exthmui/game/services/GamingService.java
@@ -34,9 +34,6 @@
 import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.provider.Settings;
-import android.telecom.TelecomManager;
-import android.telephony.PhoneStateListener;
-import android.telephony.TelephonyManager;
 import android.text.TextUtils;
 import android.util.Log;
 import android.widget.Toast;
@@ -57,6 +54,8 @@
 
 public class GamingService extends Service {
 
+    private static final String TAG = "GamingService";
+
     private static final int NOTIFICATION_ID = 1;
 
     private Intent mOverlayServiceIntent;
@@ -120,7 +119,7 @@
         try {
             mLineageHardware = LineageHardwareManager.getInstance(this);
         } catch (Error e) {
-            e.printStackTrace();
+            Log.e(TAG, "get LineageHardwareManager failed!", e);
         }
 
         registerReceiver(mGamingModeOffReceiver, new IntentFilter(Constants.Broadcasts.SYS_BROADCAST_GAMING_MODE_OFF));
@@ -233,7 +232,7 @@
         try {
             mStatusBarService.setBlockedGesturalNavigation(disable);
         } catch (RemoteException e) {
-            e.printStackTrace();
+            Log.e(TAG, "Failed to disable/enable gesture!", e);
         }
     }
 
diff --git a/app/src/main/java/org/exthmui/game/services/OverlayService.java b/app/src/main/java/org/exthmui/game/services/OverlayService.java
index 8e5f570..29ef046 100644
--- a/app/src/main/java/org/exthmui/game/services/OverlayService.java
+++ b/app/src/main/java/org/exthmui/game/services/OverlayService.java
@@ -43,8 +43,8 @@
 import org.exthmui.game.R;
 import org.exthmui.game.misc.Constants;
 import org.exthmui.game.ui.GamingPerformanceView;
-import org.exthmui.game.ui.QuickStartAppView;
 import org.exthmui.game.ui.QuickSettingsView;
+import org.exthmui.game.ui.QuickStartAppView;
 
 import top.littlefogcat.danmakulib.danmaku.Danmaku;
 import top.littlefogcat.danmakulib.danmaku.DanmakuManager;
@@ -52,6 +52,8 @@
 
 public class OverlayService extends Service {
 
+    private static final String TAG = "OverlayService";
+
     private View mGamingFloatingButton;
     private LinearLayout mGamingOverlayView;
     private ScrollView mGamingMenu;
diff --git a/app/src/main/java/org/exthmui/game/ui/GamingPerformanceView.java b/app/src/main/java/org/exthmui/game/ui/GamingPerformanceView.java
index 8050f26..d45fe6e 100644
--- a/app/src/main/java/org/exthmui/game/ui/GamingPerformanceView.java
+++ b/app/src/main/java/org/exthmui/game/ui/GamingPerformanceView.java
@@ -21,7 +21,6 @@
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.widget.LinearLayout;
-import android.widget.RadioGroup;
 import android.widget.SeekBar;
 
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;
diff --git a/app/src/main/java/org/exthmui/game/ui/QuickStartAppView.java b/app/src/main/java/org/exthmui/game/ui/QuickStartAppView.java
index 8439485..c669078 100644
--- a/app/src/main/java/org/exthmui/game/ui/QuickStartAppView.java
+++ b/app/src/main/java/org/exthmui/game/ui/QuickStartAppView.java
@@ -27,9 +27,9 @@
 import android.os.Bundle;
 import android.os.RemoteException;
 import android.os.UserHandle;
-import android.util.ArrayMap;
 import android.util.AttributeSet;
 import android.util.DisplayMetrics;
+import android.util.Log;
 import android.view.View;
 import android.widget.LinearLayout;
 
@@ -45,6 +45,8 @@
 
 public class QuickStartAppView extends LinearLayout implements View.OnClickListener {
 
+    private static final String TAG = "QuickStartAppView";
+
     private Context mContext;
     private PackageManager mPackageManager;
     private ActivityManager mActivityManager;
@@ -121,7 +123,7 @@
                 }
             }
         } catch (RemoteException e) {
-            e.printStackTrace();
+            Log.e(TAG, "", e);
         }
 
         Intent startAppIntent = mPackageManager.getLaunchIntentForPackage(packageName);
diff --git a/app/src/main/java/top/littlefogcat/danmakulib/danmaku/CachedDanmakuViewPool.java b/app/src/main/java/top/littlefogcat/danmakulib/danmaku/CachedDanmakuViewPool.java
index dff116f..3685d6f 100644
--- a/app/src/main/java/top/littlefogcat/danmakulib/danmaku/CachedDanmakuViewPool.java
+++ b/app/src/main/java/top/littlefogcat/danmakulib/danmaku/CachedDanmakuViewPool.java
@@ -1,7 +1,5 @@
 package top.littlefogcat.danmakulib.danmaku;
 
-import android.util.Log;
-
 import java.util.LinkedList;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
diff --git a/app/src/main/java/top/littlefogcat/danmakulib/danmaku/DanmakuManager.java b/app/src/main/java/top/littlefogcat/danmakulib/danmaku/DanmakuManager.java
index b5c67af..24fad2c 100644
--- a/app/src/main/java/top/littlefogcat/danmakulib/danmaku/DanmakuManager.java
+++ b/app/src/main/java/top/littlefogcat/danmakulib/danmaku/DanmakuManager.java
@@ -6,8 +6,6 @@
 import android.view.ViewGroup;
 import android.widget.FrameLayout;
 
-import org.exthmui.game.misc.Constants;
-
 import java.lang.ref.WeakReference;
 
 import top.littlefogcat.danmakulib.utils.EasyL;
diff --git a/app/src/main/res/layout/gaming_qs_view.xml b/app/src/main/res/layout/gaming_qs_view.xml
index c2e2b33..60b1e29 100644
--- a/app/src/main/res/layout/gaming_qs_view.xml
+++ b/app/src/main/res/layout/gaming_qs_view.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:gravity="center"
diff --git a/app/src/main/res/layout/music_control_layout.xml b/app/src/main/res/layout/music_control_layout.xml
index 63ed79d..2a955f6 100644
--- a/app/src/main/res/layout/music_control_layout.xml
+++ b/app/src/main/res/layout/music_control_layout.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:gravity="center"
diff --git a/app/src/main/res/layout/time_battery_layout.xml b/app/src/main/res/layout/time_battery_layout.xml
index e9b0f99..fcb8a0d 100644
--- a/app/src/main/res/layout/time_battery_layout.xml
+++ b/app/src/main/res/layout/time_battery_layout.xml
@@ -1,9 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:orientation="horizontal" >
+    android:orientation="horizontal">
 
     <TextView
         android:id="@+id/current_time"