JAVA ANDROID - 获取文件夹的列表文件
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JAVA ANDROID - get list files of a folder
提问by Francisco
I want to display images of different folders in a GridView, but I don't know what I need to do for get a list with the name of files that are inside a folder in drawable.
我想在 a 中显示不同文件夹的图像GridView，但我不知道我需要做什么才能获得一个包含 drawable 中文件夹内文件名的列表。
回答by Mostafa Jamareh
this method will give you a list containing a list of dir folders and also sub folders:
此方法将为您提供一个包含 dir 文件夹列表和子文件夹列表的列表：
public void listf(String directoryName, ArrayList<File> files) {
File directory = new File(directoryName);
// get all the files from a directory
File[] fList = directory.listFiles();
for (File file : fList) {
if (file.isFile()) {
files.add(file);
} else if (file.isDirectory()) {
listf(file.getAbsolutePath(), files);
}
}
}
回答by Kishor Patil
First Wirte this method in AsyncTask class.
首先在 AsyncTask 类中编写此方法。
private List<File> getListFiles(File parentDir) {
ArrayList<File> inFiles = new ArrayList<File>();
File[] files = parentDir.listFiles();
for (File file : files) {
if (file.isDirectory()) {
if(file.getName().toString().toLowerCase().contains(fileNameToSearch.toLowerCase()) || file.getName().toString().toUpperCase().contains(fileNameToSearch.toUpperCase())){
inFiles.add(file);
}else {
inFiles.addAll(getListFiles(file));
}
} else {
if(file.getName().toString().toLowerCase().contains(fileNameToSearch.toLowerCase()) || file.getName().toString().toUpperCase().contains(fileNameToSearch.toUpperCase())){
inFiles.add(file);
}
}
}
return inFiles;
}
Call this method from doInBackground(...)
从 doInBackground(...)
List<File> files = getListFiles(new File(directoryPath));
