电脑插上手机,运行 cordova run android 结果打包成功,但手机的页面却无法显示页面,为什么?

手机连着电脑,并且打开的调试工具,
运行 cordova run android 结果打包成功,但手机的页面却无法显示页面,为什么?

BUILD SUCCESSFUL in 2s

47 actionable tasks: 1 executed, 46 up-to-date
Built the following apk(s):

    E:\qns-mobile\platforms\android\app\build\outputs\apk\debug\app-debug.apk

ANDROID_HOME=C:Program FilesAndroidandroid-sdk
JAVA_HOME=C:Program FilesjavaJDKjdk
No target specified, deploying to device 'KVPBB18209202450'.
none
Skipping build...
Built the following apk(s):

    E:\qns-mobile\platforms\android\app\build\outputs\apk\debug\app-debug.apk

Using apk: E:qns-mobileplatformsandroidappbuildoutputsapkdebugapp-debug.apk
Package name: cn.evun.qns
(node:25828) UnhandledPromiseRejectionWarning: Error: C:Program FilesAndroidandroid-sdkplatform-toolsadb.exe: Command failed with exit code 1 Error output:
adb: failed to install E:qns-mobileplatformsandroidappbuildoutputsapkdebugapp-debug.apk: Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package cn.evun.qns signatures do not match the previously installed version; ignoring!]

at ChildProcess.whenDone (E:\qns-mobile\platforms\android\cordova\node_modules\cordova-common\src\superspawn.js:169:23)
at emitTwo (events.js:126:13)
at ChildProcess.emit (events.js:214:7)
at maybeClose (internal/child_process.js:925:16)
at Process.ChildProcess._handle.onexit (internal/child_process.js:209:5)

(node:25828) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:25828) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future,
promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
PS E:qns-mobile>

是我哪里出错了? 困扰了一天
求大神指教...

阅读 3.1k
1 个回答

输出当中有明确的错误提示:

INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package cn.evun.qns signatures do not match the previously installed version; ignoring!

意思是你手机上有个包名相同但签名不同的app阻止了这个app的安装,你需要在手机上找到那个app,卸载掉重新来过,如果实在找不到,也可以把包名改下,重来过。

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