Question

在Android Studio中连接字符串时遇到了一个问题。似乎最大长度为120个字符，但仅限于连接时。

如果我有这个例子：

private static final String HOW_LONG_CAN_A_STRING_BE =
            "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "";

String test = HOW_LONG_CAN_A_STRING_BE;

当我将鼠标悬停在字符串HOW_LONG_CAN_A_STRING_BE上时，它会解析连接的字符串。

但是，如果我在此示例中添加更多字符：

private static final String HOW_LONG_CAN_A_STRING_BE =
            "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "123456789A"
            + "1";

String test = HOW_LONG_CAN_A_STRING_BE;

当我将鼠标悬停在HOW_LONG_CAN_A_STRING_BE上时会导致错误显示在Android Studio的事件日志中，其中包含以下详细信息：

"123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A12345 ...
": Incorrect expression ""123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A12345 ...
"".
com.intellij.util.IncorrectOperationException: Incorrect expression ""123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A123456789A12345 ...
"".
    at com.intellij.psi.impl.PsiJavaParserFacadeImpl.createExpressionFromText(PsiJavaParserFacadeImpl.java:325)
    at com.intellij.psi.impl.PsiElementFactoryImpl.createExpressionFromText(PsiElementFactoryImpl.java:667)
    at com.intellij.codeInsight.javadoc.JavaDocInfoGenerator.calcInitializerExpression(JavaDocInfoGenerator.java:613)
    at com.intellij.codeInsight.javadoc.JavaDocInfoGenerator.appendInitializer(JavaDocInfoGenerator.java:661)
    at com.intellij.codeInsight.javadoc.JavaDocInfoGenerator.generateFieldJavaDoc(JavaDocInfoGenerator.java:459)
    at com.intellij.codeInsight.javadoc.JavaDocInfoGenerator.generateDocInfoCore(JavaDocInfoGenerator.java:231)
    at com.intellij.codeInsight.javadoc.JavaDocInfoGenerator.generateDocInfo(JavaDocInfoGenerator.java:255)
    at com.intellij.lang.java.JavaDocumentationProvider.generateExternalJavadoc(JavaDocumentationProvider.java:512)
    at com.intellij.lang.java.JavaDocumentationProvider.generateDoc(JavaDocumentationProvider.java:500)
    at com.intellij.lang.documentation.CompositeDocumentationProvider.generateDoc(CompositeDocumentationProvider.java:138)
    at com.intellij.codeInsight.documentation.DocumentationManager$9$4.compute(DocumentationManager.java:665)
    at com.intellij.codeInsight.documentation.DocumentationManager$9$4.compute(DocumentationManager.java:660)
    at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:932)
    at com.intellij.codeInsight.documentation.DocumentationManager$9.getDocumentation(DocumentationManager.java:659)
    at com.intellij.codeInsight.documentation.DocumentationManager$10.run(DocumentationManager.java:763)
    at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
    at com.intellij.util.Alarm$Request$1.run(Alarm.java:327)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at com.intellij.util.concurrency.QueueProcessor$RunnableConsumer.consume(QueueProcessor.java:298)
    at com.intellij.util.concurrency.QueueProcessor$RunnableConsumer.consume(QueueProcessor.java:295)
    at com.intellij.util.concurrency.QueueProcessor$2$1.run(QueueProcessor.java:110)
    at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
    at com.intellij.util.concurrency.QueueProcessor$2.consume(QueueProcessor.java:107)
    at com.intellij.util.concurrency.QueueProcessor$2.consume(QueueProcessor.java:104)
    at com.intellij.util.concurrency.QueueProcessor$3$1.run(QueueProcessor.java:215)
    at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
    at com.intellij.util.concurrency.QueueProcessor$3.run(QueueProcessor.java:212)
    at com.intellij.openapi.application.impl.ApplicationImpl$8.run(ApplicationImpl.java:419)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
    at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:149)

这是一个问题，因为我正在尝试创建一个数据库，并且保存数据库create语句的String大于120个字符。有没有人之前遇到过这个问题，如果是这样的话，如何解决这个问题而不必让我的列名不可读？

以下是失败的create语句：

CREATE TABLE reminder(
  id INTEGER PRIMARY KEY, 
  createdAt TEXT, 
  startDate TEXT, 
  endDate TEXT, 
  reminder_time INTEGER, 
  repeats INTEGER, 
  deferTime INTEGER, 
  alarmOn INTEGER, 
  reminderOn INTEGER, 
  description TEXT
)

Answer 1

我在Artjom B发表评论后跟进，发现它并没有影响数据库的创建。

我最近更新到Android Studio版本0.61，问题似乎不再存在。

在Android Studio中连接字符串时的最大字符串长度

1 个答案: