优化Camera初始化相关策略，减少出现卡顿的可能性（#64，#65）

app/release/output.json

@@ -1 +1 @@
-[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":16,"versionName":"1.1.4-androidx","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]
+[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":18,"versionName":"1.1.5-androidx","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]

app/src/main/AndroidManifest.xml

@@ -5,6 +5,8 @@
 
     <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
 
     <application
         android:allowBackup="true"

app/src/main/java/com/king/zxing/app/CustomCaptureActivity.java

@@ -58,7 +58,7 @@ public class CustomCaptureActivity extends CaptureActivity {
 //                .framingRectHorizontalOffset(0)//设置识别区域水平方向偏移量，非全屏识别时才有效
                 .frontLightMode(FrontLightMode.AUTO)//设置闪光灯模式
                 .tooDarkLux(45f)//设置光线太暗时，自动触发开启闪光灯的照度值
-                .brightEnoughLux(450f)//设置光线足够明亮时，自动触发关闭闪光灯的照度值
+                .brightEnoughLux(100f)//设置光线足够明亮时，自动触发关闭闪光灯的照度值
                 .continuousScan(isContinuousScan);//是否连扫
     }