File cache method and device

Abstract

The invention discloses a file cache method and device, and relates to computer technology. A downloaded file is stored in a primary cache and a file cache and conveniently used in subsequent loading, cache pressure of the primary cache and a secondary cache is reduced, the loading speed of files such as pictures is increased, and memory deficiency is decreased.

Description

technical field [0001] The invention relates to computer technology, in particular to a file caching method and device. Background technique [0002] In the design and development of Android network-related applications, it may often be encountered that pictures stored on the network are downloaded and displayed. This requires displaying dozens of pictures or even hundreds of pictures on one interface, which is limited to the size of the mobile phone screen. In the design, ListView (a class provided by the Android system, which mainly implements list controls) or GridView (a class provided by the Android system, which mainly implements grid controls) controls are used to control the batch download and display of pictures, that is, It is usually said that the number of pictures that need to be displayed at one time is a relatively definite number, usually not too large. If the number is relatively large, when a lot of pictures are loaded in ListView or GridView, it is easy t...

AI Technical Summary

Problems solved by technology

Generally speaking, GC manages memory reasonably, and developers don't need to care too much about the timing of memory release. However, when the memory usage of the application is relatively high, or the memory is always referenced due to code problems, and the GC cannot complete the recovery, memory will be generated. Insufficient situation

For Bitmap (bitmap), its data is allocated on the native (original, inherent) heap. When multiple Bitmaps are opened at the same time or continuously, the native heap will not be enough, and an OOM exception will occur.

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