ionic android - Unable to start the daemon process. Could not reserve enough space for 2097152KB object heap - JavaScript

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Unzipping C:\Users\app\.gradle\wrapper\dists\gradle-4.1-all\bzyivzo6n839fup2jbap0tjew\gradle-4.1-all.zip to C:\Users\app\.gradle\wrapper\dists\gradle-4.1-all\bzyivzo6n839fup2jbap0tjew

安装Gradle 之后，一直报错，主要如下一直以为是 Unable to start the daemon process，搜到的解决方案就是删除用户目录下面的.gradle ，没有仔细往下看，删除几次未果。往下看：

Error occurred during initialization of VM
Could not reserve enough space for 2097152KB object heap

就查了下：https://stackoverflow.com/questions/4401396/could-not-reserve-enough-space-for-object-heap

This can also be caused by setting something too large on a 32-bit HotSpot vm, for example:

-Xms1536m -Xmx1536m

where this might/would work:

-Xms1336m -Xmx1336m

原来是我的java版本是32的分配内存有限制所以装一个64位版本的jdk就行了

-------------------------------------------------------------------
Starting a Gradle Daemon, 1 incompatible Daemon could not be reused, use --status for details

FAILURE: Build failed with an exception.
.
* What went wrong:
Unable to start the daemon process.

This problem might be caused by incorrect configuration of the daemon.
For example, an unrecognized jvm option is used.
Please refer to the user guide chapter on the daemon at https://docs.gradle.org/4.1/userguide/gradle_daemon.html

Please read the following process output to find out more:
-----------------------
Error occurred during initialization of VM
Could not reserve enough space for 2097152KB object heap
.

* Try:
Run with
--stacktrace option to get the stack trace. Run with --info or --debug
option to get more log output.

* Get more help at https://help.gradle.org
(node:10276) UnhandledPromiseRejectionWarning: Error: cmd: Command failed with exit code 1 Error output:
FAILURE: Build failed with an exception.

* What went wrong:
Unable to start the daemon process.
This problem might be caused by incorrect configuration of the daemon.
For example, an unrecognized jvm option is used.
Please refer to the user guide chapter on the daemon at https://docs.gradle.org/4.1/userguide/gradle_daemon.html
Please read the following process output to find out more:
-----------------------
Error occurred during initialization of VM
Could not reserve enough space for 2097152KB object heap

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

* Get more help at https://help.gradle.org

at ChildProcess.whenDone
(F:\src\js\cordova\helloWorld\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:10276)
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:10276) [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.

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http://www.cnblogs.com/yanxiaodi/p/5750860.html