File Preloader Library

Loading takes time,
Caching takes space,
Preloading takes neither!

The aim of this library is to preload entire folders the user might access, so that they load instantly should the user open them.

Installation

Requirements

• JitPack

dependencies {
    ...
    implementation 'com.github.TeamAmaze:FilePreloaderLibrary:master-SNAPSHOT' //Folder preloading
}

Usage

Kotlin:

fun preload(externalDir: File) =
        FilePreloader.with(::FileMetadata).preloadFrom(externalDir.absolutePath)

fun load() = FilePreloader.with(::FileMetadata).load(externalDir.absolutePath) {
            //Do something with the data
            show(it) //it: List<FileMetadata>
        }

class FileMetadata(path: String): DataContainer(path) {
    private val name: String
    private val filePath: String
    private val extension: String
    private val isDirectory: Boolean

    init {
        val file = File(path)
        name = file.name
        filePath = file.absolutePath
        extension = file.extension
        isDirectory = file.isDirectory
    }

    override fun toString(): String {
        return "'$name': {'$filePath', $isDirectory, *.$extension}"
    }
}

Java:

private static final FilePreloader FILE_PRELOADER = FilePreloader.INSTANCE;

public void preload(File externalDir) {
    FILE_PRELOADER.with(FileMetadata.class).preloadFrom(externalDir.getAbsolutePath());
}

public void load(File externalDir) {
    FILE_PRELOADER.with(FileMetadata.class).load(externalDir.getAbsolutePath(), (fileMetadatas) -> {
        show(fileMetadatas); //Do something with the data
    });
}

private static class FileMetadata extends DataContainer {
    private final String name;
    private final String filePath;
    private final String extension;
    private final boolean isDirectory;


    public FileMetadata(@NonNull String path){
        super(path);
        File file = new File(path);
        name = file.getName();
        filePath = file.getAbsolutePath();
        extension = name.substring(name.lastIndexOf('.'));
        isDirectory = file.isDirectory();
    }

    @Override
    public String toString() {
        return "'" + name + "': {'" + filePath + "', " + isDirectory + ", *." + extension + "}";
    }
}

Development

Just import to Android Studio as normal!

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

Authors

• Emmanuel Messulam
• README made with makeareadme by Danny Guo | 郭亚东.

License:

Copyright (C) 2018 Emmanuel Messulam <emmanuelbendavid@gmail.com>
This file is part of Amaze File Manager.
Amaze File Manager is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.