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Android kernel based information display method for dynamically generating bitmap image

A dynamic generation and information display technology, applied in the direction of program control devices, etc., can solve the problems that the kernel cannot directly interact with the user, and the upper-layer application program can be modified or added.

Inactive Publication Date: 2015-10-07
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The main difficulty is: it is the upper-layer application that directly deals with the user, and the kernel cannot directly interact with the user; the developer does not want or cannot modify or add the upper-layer application, so as to realize the display of kernel information

Method used

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  • Android kernel based information display method for dynamically generating bitmap image
  • Android kernel based information display method for dynamically generating bitmap image
  • Android kernel based information display method for dynamically generating bitmap image

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Embodiment

[0025] First introduce the project background of this embodiment. The Android Wear system is a branch of the Android system. It is a smart operating system designed for wearable devices. The LG G Watch is a smart watch equipped with the Android Wear system. For the LG G Watch, the project downloads the Linux kernel source code. The source code is modified and compiled, and then the core of the watch is replaced to complete the function of controlling the microphone, Bluetooth and ADB ports of the watch at the kernel layer. At the same time, a user control interface is provided. Users can use the alarm clock program that comes with the watch. port switch control. As a part of this project, this embodiment realizes the status display function of the three ports of the watch.

[0026] This embodiment uses the 64-bit Windows7 operating system, and uses VMware software to install a 64-bit Ubuntu 14.04 virtual machine therein, and the downloading and compiling of the kernel source ...

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Abstract

The invention relates to an Android kernel based information display method for dynamically generating a bitmap image, and belongs to the technical field of mobile communication system information. A developer can expand system functions or enhance system security by modifying Android kernel source codes, certain information in the kernel needs to be displayed to a user sometimes, the kernel cannot be interactive with the user, and the developer does not want to or cannot add or modify upper applications sometimes. Aiming at the problems, information needed to be displayed in the kernel dynamically generates the bitmap image and the bitmap image is returned to an application layer when the application reads a specific picture through intercepting read operation of the application to a picture file in a virtual file system of the core by utilizing an existing program, capable of displaying the image, of a system, so that core information can be displayed. Without modifying or adding the application program and replacing the picture in the file system, the core information is displayed to the user and the purpose of enabling the user to know current conditions of related equipment is achieved.

Description

technical field [0001] The invention belongs to the technical field of mobile communication system information, and relates to an information display method for dynamically generating bitmap images based on an Android kernel. Background technique [0002] The Android system is a software platform and an open operating system designed by Google for mobile devices. It is based on the Linux2.6 kernel, including the operating system, middleware stack, customizable user interface and application programs. Due to the openness of the Android system, mobile phone manufacturers or third-party developers can modify its kernel source code to achieve system function expansion or security enhancement. The main steps include: downloading the Android kernel source code, modifying the source code, compiling to obtain a kernel image, and flashing the kernel image into Android devices such as mobile phones. After modifying the Android system using the above method, a problem often encounter...

Claims

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Application Information

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IPC IPC(8): G06F9/44
Inventor 孙宗文谭毓安张全新程子敬李元章
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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