Method and device for loading pictures during java application

Abstract

The invention provides a method for loading pictures during java application. The method comprises the following steps that: a java layer acquires an absolute path storing a jar application packet; the java layer transmits the acquired absolute path storing the jar application packet and a pre-written-in relative path for the pictures needing loading in the jar application packet into a C-language bottom layer; after acquiring the absolute path storing the jar application packet, the C-language bottom layer decompresses and unpacks the jar application packet, finds corresponding pictures according to the relative path for the pictures needing loading in the jar application packet and reads out binary data of the pictures in a cache; and the C-language bottom layer calls an graphics engine, constructs the pictures according to the binary data of the pictures and decodes the pictures for displaying. Correspondingly, the invention also provides a device for loading the pictures during the java application so as to realize efficient picture loading and improve the efficiency while lightening the workload of personnel developing set-top box application.

Description

Technical field [0001] The invention relates to the field of set-top boxes, and in particular to a method and device for loading pictures in a java application. Background technique [0002] At present, the use of embedded java virtual machine has become popular on set-top boxes. Java is a programming language released by Sun company. Set-top box software is developed through java language, especially set-top box middleware. Java programming has its unique advantages, such as: platform independent Performance, security, rich and complete packages, strong scalability, etc., but the use of java in embedded systems also has some disadvantages, especially performance issues. Compared with the traditional set-top box software developed in C language, the effect of java running on the set-top box is slower. Let’s take an example here. Load image resources. In traditional C language development, the image resources will be stored in binary format. C language directly It can be displaye...

AI Technical Summary

Problems solved by technology

[0006] The inventor finds that there are two disadvantages in the above-mentioned existing solutions during the implementation process. First, the existing solutions read the image data to the java layer through the java method, and then pass the data to the C layer through native, which not only wastes time, but also A waste of memory; secondly, the existing solutions do not solve how to obtain the absolute path of the current jar application package in the set-top box, and still do not support loading a picture in a jar application package downloaded from the Internet. If you need to support loading in the jar application package pictures, it is very inconvenient to negotiate in advance between the developer of java and the developer of the set-top box application manager

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