不再检查更新包是否存在，直接进入安装步骤

daemon/src/main/java/com/bgycc/smartcanteen/daemon/DaemonService.java

 package com.bgycc.smartcanteen.daemon;
 
 import android.app.Service;
-import android.content.ComponentName;
 import android.content.Intent;
 import android.os.IBinder;
 import android.text.TextUtils;
@@ -32,17 +31,6 @@ public class DaemonService extends Service {
             path = PathUtils.getExternalStoragePath() + File.separator + UPDATE_APK;
             LogUtils.d(TAG, "安装apk地址为空，使用默认地址: " + path);
         }
-        // 当找不到安装apk时，直接启动主应用
-        if (!FileUtils.isFileExists(path)) {
-            LogUtils.w(TAG, "安装失败, 找不到apk，重新启动主应用");
-            ComponentName componentName = new ComponentName(MAIN_PACKAGE_NAME, MAIN_ACTIVITY_NAME);
-            Intent startMainActivity = new Intent();
-            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-            intent.setComponent(componentName);
-            startActivity(startMainActivity);
-            stopSelf(START_NOT_STICKY);
-            return START_NOT_STICKY ;
-        }
 
         String component = intent.getStringExtra(ARG_COMPONENT);
         if (TextUtils.isEmpty(component)) {