Check & Get network status Normally, there will be two type with phone network: wifi & mobile(gprs,3g,4fg) So, we have can test connect and get the connect type. 1.check connect: public static boolean isOnline(Context context) { ConnectivityManage…

首先,问题描述: flutter doctor Doctor summary (to see all details, run flutter doctor -v): [√] Flutter (Channel stable, v1., on Microsoft Windows [Version 10.0.17134.765], locale zh-CN) [!] Android toolchain - develop ) X Android license status unknown. Try…

openstack里面的Provider network 和 Tenant network 的区别 openstack里面的网络相对复杂.经常有人对几个网络概念搞混淆,这里基本说明下 Openstack里面根据创建网络的用户的权限,Neutron network 可以分为: Provider network:管理员创建的和物理网络有直接映射关系的虚拟网络. Tenant network:租户普通用户创建的网络,其配置由 Neutorn 根据管理员在系统中的配置决定.受限于neutron配置. 根…

环境 Android Studio 3.0 升级&导入项目 错误 Error:java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details Error:Execution failed for task ':app:mergeAnzhiDebugResources'. > Error: java.util.concurre…

1.错误显示 com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details log提示:Generate Signed APK: Errors while building APK. You can find the errors in the 'Messages' view. 2.错误原因 通过后重命名修改图片的后缀,把.jpg改为.PNG,修改图片属性后放到项目中 3.解决方法 ps打开原jpg图片,另…

问题:使用systemctl restart network 或 service network restart 命令重启网卡失败. 分析:原因其实也很简单,命令用错了,造成了找不到相应的网卡服务. 解决: 1.可以尝试使用以下命令: service network-manager restart 2.如果是 Kali Linux(Debian),则需要用以下命令: service networking restart 3.如果是Centos 8,则需要用以下命令: nmcli c reload…

Develop network with HttpURLConnection & HttpClient. HttpURLConnection  is lightweight with HttpClient. So normally, you just need HttpURLConnection. NetWork is a timer wast task, so it is better doing this at asynctask. package com.joyfulmath.androi…

Normally, there are three type parser in android. Xmlpullparser, DOM & SAX. Google recomand Xmlpullparser to doing this. But to parser xml files or inputstream, it based on xml content. So using an general way to parser xml. BaseXmlObj: /************…

network mode常见类型 WCDMA preferred : 0 GSM only : 1 WCDMA only : 2 GSM UMTS : 3 CDMA : 4 ... (参考RILConstants.java) 是透过AT+ERAT把mode的值丢给modem,让modem设定相应的mode. 假设是TDD手机.那么其network mode的值和WCDMA是相应的. WCDMA preferred -- TD-SCDMA preferred WCDMA only -- TD-SC…

简单地训练一个四层全连接网络. Ref: http://machinelearningmastery.com/tutorial-first-neural-network-python-keras/ 1. Load Data 数据简介:Pima Indians Diabetes Data Set 下载 :Data download --> 保存为:pima-indians-diabetes.csv from keras.models import Sequential from keras.lay…