Application Lifecycle and Note Management

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Questions and Answers

What indicates that the application is likely not to be cleaned up from memory?

The application has fewer than 5 processes running.

User information is set to true.

The application has been recently opened.

It has a level of 40 in the LRU cache. (correct)

What percentage of dirty notes were recorded at the time of processing?

50%

75%

0% (correct)

100%

What does the log message about 'DirtyStrokeHandler' imply?

The application has run out of storage.

All dirty notes have been successfully processed. (correct)

There are unresolved notes that need to be imported.

The user has deleted all imported notes.

Which of the following statements regarding the UpgradeManager is true?

It initiates the app on first install. Signup and view all the answers

What is indicated by the 'IS_FIRST_PRIVACY' message being true?

The application is in its initial setup phase. Signup and view all the answers

What does the log message 'BaseActivity.onCreate: isTablet = true' indicate?

The app is currently running on a tablet device. Signup and view all the answers

What does the 'pdf初始化成功version：9.0.0.1127' log message mean?

The PDF was successfully initialized with the specified version. Signup and view all the answers

What is referenced when the log shows 'getExternalFilesDirs' followed by a specific file path?

The location for external storage for app data. Signup and view all the answers

What does '脏笔记数量：0' suggest about the application state?

All notes have been processed successfully. Signup and view all the answers

What could the 'mmkv init' message signify?

The memory key-value storage has been initialized. Signup and view all the answers

During which lifecycle method does the hashCode indicate the creation of the SubscribeVipActivity?

onCreate Signup and view all the answers

The message '查询所有耗时：0' implies what about the query processing time?

The query was executed without any delays. Signup and view all the answers

What does the term '反射获取失败，走遍历查询' imply?

Reflection access failed, and alternative querying will be performed. Signup and view all the answers

What does the message '未导入完笔记处理完' suggest?

There are still notes pending import processing. Signup and view all the answers

Why might 'user_info:false' be significant in the log?

No user data has been entered yet. Signup and view all the answers

Which of the following activities does not display as a tablet in the log?

PhoneNoteListActivity Signup and view all the answers

What is indicated by the log entry labeled '全部笔画数量'?

Total stroke count Signup and view all the answers

What can be inferred about the app's lifecycle state in the log entries?

The application is currently in the foreground and not likely to be cleared. Signup and view all the answers

What does the log entry 'mmkv init' likely refer to?

Initialization of memory management key-value storage. Signup and view all the answers

In the logs, what does '脏笔记处理完' translate to in English?

Dirty notes processing completed Signup and view all the answers

Which of the following is indicated by the entry '查询所有耗时'?

Time taken for all queries Signup and view all the answers

What does the log entry '反射获取失败，走遍历查询' imply?

Reflection retrieval has failed, leading to a fallback to traversal queries. Signup and view all the answers

What does the log entry indicating 'version: 9.0.0.1127' likely refer to?

Version number of the PDF initialization Signup and view all the answers

What does '未升级笔画数量' indicate?

Number of strokes that have not been upgraded Signup and view all the answers

Study Notes

Application Lifecycle Events

Application initialization (onCreate)
Maintaining user information (userInfo:false, IS_FIRST_PRIVACY:true, userToken:false)
Loading PDF documents (PDF pdf 初始化成功 version:9.0.0.1127) and potential reflection errors in accessing storage (StorageUtils, getReflectRootInPath: 反射获取失败)
Utilizing file paths (getExternalFilesDirs)
Managing and updating notes data
Optimization measures (using LRU cache and handling potential cleanup (LifeCycle level=40))
Handling various events and thread activity

Note Management

DirtyStrokeHandler threads manage note data (initial count, handling, and completion).
StrokeUpgradeHandler processes note updates and upgrade status.
UpgradeManager oversees note upgrade operations (pre-processing and counts).

Library Interactions

MMkvSPUtils manages key-value storage (mmkv init, user info, IS_FIRST_PRIVACY, userToken).
StorageUtils handles file system interactions, potentially using reflection (getReflectRootInPath).

System Activities

Application startup sequence, possibly across different devices based on tablet status (isTablet).

UI Interactions

BaseActivity and SubscribeVipActivity handling lifecycle events.
Operations like onResume and onCreate are observed within these activities (BaseActivity.onCreate, BaseActivity.onResume).
PhoneNoteListActivity manages list views and note details, demonstrating activity lifecycle and background operations.

Other Observations

Specific error messages or warnings related to processing or system interactions are noted.
LifeCycle levels provide insight into application status and related memory management.
Application state changes (e.g., foreground/background transitions and corresponding actions).
Version information(PDF version:9.0.0.1127) is documented.

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Description

Explore the crucial aspects of application lifecycle events and note management. This quiz covers topics such as application initialization, maintaining user information, and managing note data. Additionally, it delves into interactions with key-value storage and optimization techniques.