环境：MAC 机，apache-maven-3.3.3，appium-1.4.8.dmg

#1 楼 @henry
driver.context("WEBVIEW_com.。。。");执行不了。
driver.context("WEB_VIEW");可以执行。
但是 Activity 上有复数个 webview。打印出 contexts 的内容，只有一个 web view，??
是移动端混合型 App（hybrid app）,各位有遇到这个问题的吗

info: --> GET /wd/hub/session/3920d29c-9de2-4908-a663-73a30f423f33/contexts {}
info: [debug] Getting a list of available webviews
info: [debug] executing cmd: /Users/Desktop/android-sdk-macosx/platform-tools/adb -s R32CA05X1CJ shell "cat /proc/net/unix"
info: [debug] WEBVIEW_9615 mapped to pid 9615
info: [debug] Getting process name for webview
info: [debug] executing cmd: /Users/Desktop/android-sdk-macosx/platform-tools/adb -s R32CA05X1CJ shell "ps"
info: [debug] Parsed pid: 9615 pkg: com.systemdirector.ent.smt
info: [debug] from: u0_a302,9615,136,1669508,128240,ffffffff,00000000,S,com.systemdirector.ent.smt
info: [debug] returning process name: com.systemdirector.ent.smt
info: [debug] Available contexts: NATIVE_APP,WEBVIEW_com.systemdirector.ent.smt
info: [debug] ["WEBVIEW_com.systemdirector.ent.smt"]
info: [debug] Available contexts: NATIVE_APP,WEBVIEW_com.systemdirector.ent.smt
info: [debug] Responding to client with success: {"status":0,"value":["NATIVE_APP","WEBVIEW_com.systemdirector.ent.smt"],"sessionId":"3920d29c-9de2-4908-a663-73a30f423f33"}
info: <-- GET /wd/hub/session/3920d29c-9de2-4908-a663-73a30f423f33/contexts 200 218.819 ms - 130 {"status":0,"value":["NATIVE_APP","WEBVIEW_com.systemdirector.ent.smt"],"sessionId":"3920d29c-9de2-4908-a663-73a30f423f33"}
info: --> POST /wd/hub/session/3920d29c-9de2-4908-a663-73a30f423f33/context {"name":"WEBVIEW_com.systemdirector.ent.smt"}
info: [debug] Getting a list of available webviews
info: [debug] executing cmd: /Users/Desktop/android-sdk-macosx/platform-tools/adb -s R32CA05X1CJ shell "cat /proc/net/unix"
info: [debug] WEBVIEW_9615 mapped to pid 9615
info: [debug] Getting process name for webview
info: [debug] executing cmd: /Users/Desktop/android-sdk-macosx/platform-tools/adb -s R32CA05X1CJ shell "ps"
info: [debug] Parsed pid: 9615 pkg: com.systemdirector.ent.smt
info: [debug] from: u0_a302,9615,136,1669508,128240,ffffffff,00000000,S,com.systemdirector.ent.smt
info: [debug] returning process name: com.systemdirector.ent.smt
info: [debug] Available contexts: NATIVE_APP,WEBVIEW_com.systemdirector.ent.smt
info: [debug] ["WEBVIEW_com.systemdirector.ent.smt"]
info: [debug] Available contexts: NATIVE_APP,WEBVIEW_com.systemdirector.ent.smt
info: [debug] Responding to client with success: {"status":0,"value":null,"sessionId":"3920d29c-9de2-4908-a663-73a30f423f33"}
info: <-- POST /wd/hub/session/3920d29c-9de2-4908-a663-73a30f423f33/context 200 149.636 ms - 76 {"status":0,"value":null,"sessionId":"3920d29c-9de2-4908-a663-73a30f423f33"}
info: --> GET /wd/hub/session/3920d29c-9de2-4908-a663-73a30f423f33/orientation {}
info: [debug] Proxying command to 127.0.0.1:9515
info: [debug] Making http request with opts: {"url":"http://127.0.0.1:9515/wd/hub/session/11ed082b6b9a7dd33d791bad558c5bce/orientation,method:GET"}
info: [debug] Proxied response received with status 501: "unimplemented command: session/11ed082b6b9a7dd33d791bad558c5bce/orientation"
info: <-- GET /wd/hub/session/3920d29c-9de2-4908-a663-73a30f423f33/orientation 501 7.323 ms - 75
info: --> DELETE /wd/hub/session/3920d29c-9de2-4908-a663-73a30f423f33 {}
info: Shutting down appium session
info: [debug] Pressing the HOME button
info: [debug] executing cmd: /Users/Desktop/android-sdk-macosx/platform-tools/adb -s R32CA05X1CJ shell "input keyevent 3"
info: [debug] Stopping logcat capture
info: [debug] Logcat terminated with code null, signal SIGTERM
info: [debug] Deleting Chrome session
info: [debug] Making http request with opts: {"url":"http://127.0.0.1:9515/wd/hub/session/11ed082b6b9a7dd33d791bad558c5bce,method:DELETE"}
info: [debug] Cleaning up Chromedriver
info: [debug] Killing chromedriver and waiting for close
info: [debug] Chromedriver exited with code null
info: debug
info: [debug] [BOOTSTRAP] [debug] Got data from client: {"cmd":"shutdown"}
info: [debug] [BOOTSTRAP] [debug] Got command of type SHUTDOWN
info: [debug] [BOOTSTRAP] [debug] Returning result: {"status":0,"value":"OK, shutting down"}
info: [debug] [BOOTSTRAP] [debug] Closed client connection
info: [debug] [UIAUTOMATOR STDOUT] INSTRUMENTATION_STATUS: numtests=1
info: [debug] [UIAUTOMATOR STDOUT] INSTRUMENTATION_STATUS: stream=.
info: [debug] [UIAUTOMATOR STDOUT] INSTRUMENTATION_STATUS: id=UiAutomatorTestRunner
info: [debug] [UIAUTOMATOR STDOUT] INSTRUMENTATION_STATUS: test=testRunServer
info: [debug] [UIAUTOMATOR STDOUT] INSTRUMENTATION_STATUS: class=io.appium.android.bootstrap.Bootstrap
info: [debug] [UIAUTOMATOR STDOUT] INSTRUMENTATION_STATUS: current=1
info: [debug] [UIAUTOMATOR STDOUT] INSTRUMENTATION_STATUS_CODE: 0
info: [debug] [UIAUTOMATOR STDOUT] INSTRUMENTATION_STATUS: stream=
info: [debug] [UIAUTOMATOR STDOUT] Test results for WatcherResultPrinter=.
info: [debug] [UIAUTOMATOR STDOUT] Time: 42.512
info: [debug] [UIAUTOMATOR STDOUT] OK (1 test)
info: [debug] [UIAUTOMATOR STDOUT] INSTRUMENTATION_STATUS_CODE: -1
info: [debug] Sent shutdown command, waiting for UiAutomator to stop...
info: [debug] UiAutomator shut down normally
info: [debug] Cleaning up android objects
info: [debug] Cleaning up appium session
info: [debug] Responding to client with success: {"status":0,"value":null,"sessionId":"3920d29c-9de2-4908-a663-73a30f423f33"}
info: <-- DELETE /wd/hub/session/3920d29c-9de2-4908-a663-73a30f423f33 200 764.713 ms - 76 {"status":0,"value":null,"sessionId":"3920d29c-9de2-4908-a663-73a30f423f33"}

解决了：）
我的错误信息，如下：
error: [REMOTE] Could not connect to WebKitRemoteDebugger server

info: [debug] Responding to client with error: {"status":13,"value":{"message":"An unknown server-side error occurred while processing the command. (Original error: connect ECONNREFUSED)","code":"ECONNREFUSED","errno":"ECONNREFUSED","syscall":"connect","origValue":"connect ECONNREFUSED"},"sessionId":"7cfd54c0-8795-4d54-a6f4-65a969df7f58"}

解决方法：
1，使用 brew 安装最新的 ios-webkit-debug-proxy。在终端运行一下命令:

brew install ios-webkit-debug-proxy
2，启动代理：

将 udid 替换成你的设备的 udid。确保端口 27753 没有被占用

remote-debugger 将会使用这个端口。

ios_webkit_debug_proxy -c 0e4b2f612b65e98c1d07d22ee08678130d345429:27753 -d

具体参照：https://testerhome.com/topics/3144

我的错误信息和你一样，如下：
info: [debug] Couldn't find ideviceinstaller, trying built-in at /Volumes/Appium/Appium.app/Contents/Resources/node_modules/appium/build/libimobiledevice-macosx/ideviceinstaller
error: Could not initialize ideviceinstaller; make sure it is installed and works on your system

我的解决方法是安装 ideviceinstaller，安装方法如下：
brew install --HEAD ideviceinstaller

希望对你有用。

解决了吗？能共享一下解决方法吗？