E File error accessing recents directory (directory doesn't exist?). 2023-07-06 22:07:56.703 9908-9908 AndroidRuntime com.example.chpter06 E FATAL EXCEPTION: main Process: com.example.chpter06, PID: 9908 java.lang.IllegalArgumentException: Empty values at android.database.sqlite.SQLiteDatabase.updateWithOnConflict(SQLiteDatabase.java:1772) at android.database.sqlite.SQLiteDatabase.update(SQLiteDatabase.java:1752) at com.example.chpter06.database.UserDBHelper.update(UserDBHelper.java:110) at com.example.chpter06.SQLiteHelperActivity.onClick(SQLiteHelperActivity.java:100)
时间: 2024-02-10 10:22:49 浏览: 172
根据你提供的错误信息,看起来是在访问最近目录时发生了文件错误。同时,还有一个严重的异常错误,即java.lang.IllegalArgumentException: Empty values。这个异常可能是由于传递给SQLiteDatabase.update()方法的值为空引起的。
要解决这个问题,你可以按照以下步骤进行排查和修复:
1. 确认最近目录是否存在:检查代码中访问最近目录的部分,确保目录存在。你可以使用文件管理器或命令行查看文件系统中是否存在该目录。
2. 检查传递给SQLiteDatabase.update()方法的参数:检查代码中的update方法调用,确保传递给该方法的值不为空。如果参数为空,可能需要重新检查代码逻辑,并确保传递正确的参数值。
3. 检查数据库操作的逻辑:查看UserDBHelper.java文件中的update方法实现,确保在执行数据库更新操作之前,所有必需的参数值都已正确设置。
4. 检查SQLiteHelperActivity.java文件中的onClick方法:检查点击事件处理方法,确认在调用UserDBHelper.update()方法之前是否对参数进行了正确的初始化。
通过以上步骤的排查和修复,你应该能够解决这个问题。如果问题仍然存在,请提供更多的代码信息,以便我能够给出更具体的建议。
相关问题
unknown error: DevToolsActivePort file doesn't exist
This error usually occurs when trying to launch Google Chrome or other Chromium-based browsers. It indicates that the DevToolsActivePort file, which is used by the browser's developer tools, is missing or inaccessible.
There are several possible solutions to this issue:
1. Close all instances of the browser and try launching it again.
2. Check if any anti-virus or firewall software is blocking the browser from accessing the DevToolsActivePort file. Temporarily disabling such software may help.
3. Rename the folder of the browser's user profile directory and try launching the browser again. The user profile directory is usually located in the following directories:
- Google Chrome: %USERPROFILE%\AppData\Local\Google\Chrome\User Data
- Microsoft Edge: %USERPROFILE%\AppData\Local\Microsoft\Edge\User Data
4. Try running the browser with administrative privileges.
5. If none of the above solutions work, try reinstalling the browser.
It's important to note that this error can also be caused by malware or other system-level issues. If none of the above solutions work, it may be necessary to seek professional help.
Could not find artifact org.flowable:flowable-spring-boot-starter:pom:7.2.0 in aliyunmaven
This error message indicates that Maven was unable to find the `flowable-spring-boot-starter` artifact in the `aliyunmaven` repository.
There are a few possible reasons for this error:
1. The artifact may not exist in the `aliyunmaven` repository. You can try searching for it on the repository website or checking if the artifact is available in other repositories.
2. Your `pom.xml` file may not be properly configured to use the `aliyunmaven` repository. Double-check that the repository is listed correctly in your `pom.xml` file.
3. There may be an issue with your internet connection or firewall settings, preventing Maven from accessing the `aliyunmaven` repository. Try disabling your firewall or connecting to a different network to see if that resolves the issue.
If none of these solutions work, you may need to consider using a different repository that hosts the `flowable-spring-boot-starter` artifact.