Android---真机调试时不能识别手机的解决方案

我自己遇到的问题是VS2013和VS2015中xamarin无法识别到真机，现象就是插上手机开启调试模式，豌豆荚都可以连接上手机，就是VS上没出现手机。

但是低版本的手机貌似又行，4.0.3的。

于是排除了各种问题，比如手机开发这模式，数据线，ADB驱动，ANDROID SDK升级，都不行，

最后随意地点了下Restart Adb Server：

发现居然可以识别到真机了，我只能说比较神奇。。。

 

下面是引用别人的文章，不过我并没有参考，还是放这里吧：

以下都是ADB连接问题，可以通过尝试如下步骤，由简单度排序

1. 插拔下USB连接线

2. 关闭USB模式再打开

3. 执行以下命令

adb kill-server
adb start-server

 

4.  效果与3相同

DDMS - Devices - Reset adb

 

5. 关闭所有PC套件，例如：

杀死 Wandoujia  相关的所有进程，ok

wandoujia_daemon.exe

wandoujia_helper.exe

 

6. 重启Eclipse
7. 查看有几个ADB进程，全部杀死再重新启动ADB

8. 查看下USB先是否连接电脑与手机

9. 重启手机

10. 关闭占用5037端口软件

11. 更新adb （见问题14）

 

1. 查看占用端口5037的PID值
netstat -a -n -o |findstr "5037"
输出结果：
  TCP    127.0.0.1:5037         0.0.0.0:0              LISTENING       5096
  TCP    127.0.0.1:5037         127.0.0.1:51577        ESTABLISHED     5096
  TCP    127.0.0.1:51577        127.0.0.1:5037         ESTABLISHED     4324


2. 从上面得知PID = 5096占用了5037端口，现在通过PID查看进程名，看到底哪个进程占用此端口
tasklist /v | findstr 5096
输出结果：
tadb.exe  5096 Console  1  4,932 K Unknown  ......  0:00:02 暂缺

网上查询得知tadb.exe是腾讯管家启动的进程

 

3. 杀死占用5037端口的进程 tadb.exe
taskkill /f -pid 5096
taskkill /im tadb.exe
输出结果
成功: 已终止 PID 为 5096 的进程。

问题1 

 

The connection to adb is down, and a severe error has occured.
You must restart adb and Eclipse.
Please ensure that adb is correctly located at 'adb.exe' and can be executed.

问题2

ADB server didn't ACK
* failed to start daemon *

问题3

Adb failed to restart！ Make sure the plugin is properly configured

问题4

** Adb connection Error:远程主机强迫关闭了一个现有的连接

问题5

java.io.IOException: 您的主机中的软件中止了一个已建立的连接。
      at sun.nio.ch.SocketDispatcher.write0(Native Method)
      at sun.nio.ch.SocketDispatcher.write(Unknown Source)
      at sun.nio.ch.IOUtil.writeFromNativeBuffer(Unknown Source)
      at sun.nio.ch.IOUtil.write(Unknown Source)
      at sun.nio.ch.SocketChannelImpl.write(Unknown Source)
      at com.android.ddmlib.JdwpPacket.writeAndConsume(JdwpPacket.java:213)
      at com.android.ddmlib.Client.sendAndConsume(Client.java:575)
      at com.android.ddmlib.HandleHeap.sendREAQ(HandleHeap.java:348)
      at com.android.ddmlib.Client.requestAllocationStatus(Client.java:421)
      at com.android.ddmlib.DeviceMonitor.createClient(DeviceMonitor.java:854)
      at com.android.ddmlib.DeviceMonitor.openClient(DeviceMonitor.java:822)
      at com.android.ddmlib.DeviceMonitor.processIncomingJdwpData(DeviceMonitor.java:781)
      at com.android.ddmlib.DeviceMonitor.deviceClientMonitorLoop(DeviceMonitor.java:649)
      at com.android.ddmlib.DeviceMonitor.access$100(DeviceMonitor.java:42)
      at com.android.ddmlib.DeviceMonitor$3.run(DeviceMonitor.java:577)

通常是同时打开了两个eclipse,关闭一个即可

 

问题6

Failed to install .apk on device '': Unable to open sync connection!
java.io.IOException: Unable to open sync connection!
Launch canceled!

问题7

ADB rejected shell command (rm /data/local/.apk): closed
Error during Sync: Unable to open sync connection!
Error during Sync: Unable to open sync connection!
Adb connection Error:远程主机强迫关闭了一个现有的连接。
Connection attempts: 1
Connection attempts: 2
Connection attempts: 3

问题8

 

Failed to install .apk on device  : Too many open files
com.android.ddmlib.SyncException: Too many open files
Launch failed on device:

问题9

Failed to install .apk on device '': closed
com.android.ddmlib.InstallException: closed
Launch failed on device:

问题10

 

Installation error: INSTALL_FAILED_INSUFFICIENT_STORAGE
Please check logcat output for more details.
Launch failed on device:

问题11

 

Installation error: INSTALL_FAILED_UPDATE_INCOMPATIBLE
Please check logcat output for more details.
Launch failed on device:

使用PC套件删除，然后安装不行，通过adb uninstall 再次删除，安装ok

 

问题12

Android Launch!
Connection with adb was interrupted.
0 attempts have been made to reconnect.
You may want to manually restart adb from the Devices view.

问题13

Unexpected error while launching logcat. Try reselecting the device.] closed
om.android.ddmlib.AdbCommandRejectedException: closed
     at com.android.ddmlib.AdbHelper.executeRemoteCommand(AdbHelper.java:381)
     at com.android.ddmlib.Device.executeShellCommand(Device.java:462)
     at com.android.ddmuilib.logcat.LogCatReceiver$1.run(LogCatReceiver.java:109)
     at java.lang.Thread.run(Unknown Source)

问题14

adb server is out of date.  killing...
* daemon started successfully *
error: device offline

出现问题的版本

 

D:>adb version
Android Debug Bridge version 1.0.29

问题出在adb的版本太低，更新ADT后问题解决

 

D:>adb version
Android Debug Bridge version 1.0.31