Android Customized Key Processing via Bypass Module
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Solution Overview
Problem
The Android input system cannot process user-customized keys without modifying the Android framework, leading to integration failures and system splits, as well as inability to synchronize and merge patches.
Innovation Solution
A processing method and device that utilize a key driver module and intermediate block module to map and convert key scan codes into specific key codes, bypassing the Android framework layer to send them to application programs for processing, thereby extending the Linux input driver to handle customized keys without affecting the Android system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the Android framework is modified to add customized keys as predefined key values, then the Android input system can process user-customized keys, but integration of modified Android frameworks from multiple users fails and the Android backbone system splits
Solution Approach 1:
The patent segments the key processing system into three distinct layers: the Linux input driver layer (unchanged), the Android framework layer (unchanged), and a new customized key processing layer (block service block). This segmentation allows customized key functionality to be added without modifying the core Android framework, thereby maintaining integration stability while achieving customization capability.
Solution Approach 2:
The patent introduces an intermediary block service block that mediates between the Linux input driver and the Android framework. This intermediary component captures customized key events from the driver and translates them into Android-compatible key events, enabling customized key processing without directly modifying the Android framework structure.
2Adaptability or versatility
If the Android framework is modified to add customized keys, then user-customized keys can be processed, but the modified Android framework cannot synchronize and merge patches related to the Android system
Solution Approach 1:
The patent extracts the customized key processing functionality from the Android framework and places it in a separate block service block. This extraction ensures that the core Android framework remains unchanged and can continue to receive and apply patches normally, while the customized key functionality is maintained independently in the block service block.
Solution Approach 2:
The patent implements preliminary action by pre-configuring customized key mappings in the block service block before the Android framework is loaded. This allows customized key functionality to be established in advance without requiring modifications to the Android framework source code, thereby preserving the ability to synchronize and merge system patches.
3Ease of manufacture
If customized keys are implemented without modifying the Android framework, then patch synchronization is maintained, but the Android input system cannot process user-customized keys
Solution Approach 1:
The patent introduces an intermediary block service block that acts as a bridge between the unchanged Android framework and the customized key processing requirements. This intermediary component translates customized key events into formats compatible with the Android framework, enabling customized key processing without modifying the framework itself and thus maintaining patch synchronization capability.
Solution Approach 2:
The patent applies parameter changes by transforming customized key events into equivalent Android framework key event parameters. The block service block converts customized key scan codes into corresponding Android key codes, allowing the unchanged Android framework to process customized keys through parameter transformation rather than structural modification.
Data Source
AI summary
A processing method of a customized key based on an Android platform includes receiving a key value of an input key, mapping the key value to a key scan code, identifying a to-be-blocked key according to the key scan code, converting, when the input key is the to-be-blocked key, the key scan code into a specific key code by a key block module, and sending, by bypassing an Android framework layer by the key block module, the specific key code to an application program for processing.