小编aqu*_*aga的帖子

当我尝试通过Android Studio导入我的项目时,我收到此错误.

我在项目中使用了gmaps.我该如何解决这个错误？

我已经重新安装了Java并重置了JAVA_HOME.我也确保Gradle设置正确.

2013-12-23 11:13:35,448 [ 107774]   WARN - nal.AbstractExternalSystemTask - Cause: java.util.ArrayList cannot be cast to java.util.Map 
com.intellij.openapi.externalSystem.model.ExternalSystemException: Cause: java.util.ArrayList cannot be cast to java.util.Map
    at org.jetbrains.plugins.gradle.service.project.GradleExecutionHelper.execute(GradleExecutionHelper.java:160)
    at com.android.tools.idea.gradle.project.AndroidGradleProjectResolver.resolveProjectInfo(AndroidGradleProjectResolver.java:135)
    at com.android.tools.idea.gradle.project.AndroidGradleProjectResolver.resolveProjectInfo(AndroidGradleProjectResolver.java:77)
    at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:83)
    at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:42)
    at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl$1.produce(RemoteExternalSystemProjectResolverImpl.java:41)
    at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl$1.produce(RemoteExternalSystemProjectResolverImpl.java:37)
    at com.intellij.openapi.externalSystem.service.remote.AbstractRemoteExternalSystemService.execute(AbstractRemoteExternalSystemService.java:59)
    at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl.resolveProjectInfo(RemoteExternalSystemProjectResolverImpl.java:37)
    at com.intellij.openapi.externalSystem.service.remote.wrapper.ExternalSystemProjectResolverWrapper.resolveProjectInfo(ExternalSystemProjectResolverWrapper.java:49)
    at com.intellij.openapi.externalSystem.service.internal.ExternalSystemResolveProjectTask.doExecute(ExternalSystemResolveProjectTask.java:53)
    at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:130)
    at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:120)
    at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$3.execute(ExternalSystemUtil.java:422)
    at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$4$1.run(ExternalSystemUtil.java:475)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl$TaskRunnable.run(ProgressManagerImpl.java:464)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl$6.run(ProgressManagerImpl.java:274)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:178)
    at com.intellij.openapi.progress.ProgressManager.executeProcessUnderProgress(ProgressManager.java:209)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:212)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:171)
    at com.intellij.openapi.application.impl.ApplicationImpl$10$1.run(ApplicationImpl.java:657)
    at com.intellij.openapi.application.impl.ApplicationImpl$8.run(ApplicationImpl.java:435)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at …

在java邮件中,当我解析一封回复的电子邮件时,我怎样才能只收到最新的邮件(回复)并忽略旧邮件？

我正在基于循环调度算法开发java中的运动项目.对于n支队伍,我希望用n/2场比赛产生2(n-1)轮.也就是说每支球队都必须在一轮比赛中进行比赛,每两支球队会两次,一次一次,一次回家.我设法实现了algoritm,除了home/away部分.我能够产生回合,但是在下半场不能"交换"球队,所以他们可以在主场和主场比赛.

这是我到目前为止:

import java.util.Arrays;
import java.util.Scanner;

public class sports {

public static void main(String[] args) {

    //obtain the number of teams from user input
    Scanner input = new Scanner(System.in);
    System.out.print("How many teams should the fixture table have?");

    int teams;
    teams = input.nextInt();


    // Generate the schedule using round robin algorithm.
    int totalRounds = (teams - 1)*2;
    int matchesPerRound = teams / 2;
    String[][] rounds = new String[totalRounds][matchesPerRound];

    for (int round = 0; round < totalRounds; round++) {
        for (int match …

我正在针对Reflux商店编写mocha测试,以验证操作是否会导致商店中的状态发生变化.代码的缩小版本如下:

商店:

var AppStore = Reflux.createStore({
  init: function () {
    this.foo = false;
  },
  listenables: [AppActions],
  onFooAction: function() {
    this.foo = !this.foo;
    this.trigger({action: "foo-ed"});
  };
});

行动:

var AppActions = Reflux.createActions([
  "fooAction"
]);

测试:

it("toggles foo", function () {
  expect(AppStore.foo).to.equal(false);

  AppStore.listenables[0].fooAction();

  expect(AppStore.foo).to.equal(true);
});

然而,第二个断言(expect(AppStore.foo).to.equal(true);)失败说foo仍然是假的.

通过console.log在onFooAction方法中执行,我已经验证该方法实际上已被触发并且this.foo正在切换.

我在这里缺少什么基本概念:概念还是其他？我真诚地希望这不是一个时间问题!

我的情况是，我将下载该课程并离线学习该课程。我们可以跟踪课程结果并将其存储在某个地方吗？这样我就可以在连接到 LMS 时上传课程状态吗？

我们可以实现多用户的离线课程（单课程）吗？如果是这样，我们如何验证每个用户并存储它们？

请解释一下这样做的步骤。

目前我在 Windows 上使用 HTML-5、Javascript、Scorm1.2。