可能重复: How让所有的图片,从模拟器的SD卡,并在ListView显示呢?
我在SD卡这么多的文件夹。每个文件夹中包含的图像文件,文本文件和子文件夹。我如何获得所有文件夹和放大器可用的所有图像文件;在SD卡的子文件夹?我需要所有的图像文件路径保存到一个阵列。谁能帮我请。
I have so many folders under sdcard. Each folder contains image files, text files and sub folders. How do i get all image files available in all folders & subfolders under sdcard? I need to store all image file paths into one array. Can anyone help me please.
您可以使用下面code来搜索所有的图像从SD卡。
You can use below code to search all image from SD Card .
private String SD_CARD_ROOT;
File mFile=Environment.getExternalStorageDirectory();
SD_CARD_ROOT=mFile.toString();
private List<String> FindFiles() {
final List<String> tFileList = new ArrayList<String>();
Resources resources = getResources();
// array of valid image file extensions
String[] imageTypes = resources.getStringArray(R.array.image);
FilenameFilter[] filter = new FilenameFilter[imageTypes.length];
int i = 0;
for (final String type : imageTypes) {
filter[i] = new FilenameFilter() {
public boolean accept(File dir, String name) {
return name.endsWith("." + type);
}
};
i++;
}
FileUtils fileUtils = new FileUtils();
File[] allMatchingFiles = fileUtils.listFilesAsArray(
new File(SD_CARD_ROOT), filter, -1);
for (File f : allMatchingFiles) {
tFileList.add(f.getAbsolutePath());
}
return tFileList;
}
在资源阵图像类型:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array name="image">
<item>bmp</item>
<item>cmx</item>
<item>cod</item>
<item>gif</item>
<item>ico</item>
<item>ief</item>
<item>jpe</item>
<item>jpeg</item>
<item>jpg</item>
<item>jfif</item>
<item>pbm</item>
<item>pgm</item>
<item>png</item>
<item>pnm</item>
<item>ppm</item>
<item>ras</item>
<item>rgb</item>
<item>svg</item>
<item>tif</item>
<item>tiff</item>
<item>xbm</item>
<item>xpm</item>
<item>xwd</item>
</string-array>
</resources>
希望这会帮助您找到照片。
Hope this will help you to find images.
下面是缺少类
public class FileUtils {
public void saveArray(String filename, List<String> output_field) {
try {
FileOutputStream fos = new FileOutputStream(filename);
GZIPOutputStream gzos = new GZIPOutputStream(fos);
ObjectOutputStream out = new ObjectOutputStream(gzos);
out.writeObject(output_field);
out.flush();
out.close();
}
catch (IOException e) {
e.getStackTrace();
}
}
@SuppressWarnings("unchecked")
public List<String> loadArray(String filename) {
try {
FileInputStream fis = new FileInputStream(filename);
GZIPInputStream gzis = new GZIPInputStream(fis);
ObjectInputStream in = new ObjectInputStream(gzis);
List<String> read_field = (List<String>)in.readObject();
in.close();
return read_field;
}
catch (Exception e) {
e.getStackTrace();
}
return null;
}
public File[] listFilesAsArray(File directory, FilenameFilter[] filter,
int recurse) {
Collection<File> files = listFiles(directory, filter, recurse);
File[] arr = new File[files.size()];
return files.toArray(arr);
}
public Collection<File> listFiles(File directory,
FilenameFilter[] filter, int recurse) {
Vector<File> files = new Vector<File>();
File[] entries = directory.listFiles();
if (entries != null) {
for (File entry : entries) {
for (FilenameFilter filefilter : filter) {
if (filter == null
|| filefilter
.accept(directory, entry.getName())) {
files.add(entry);
Log.v("ImageViewFlipper", "Added: "
+ entry.getName());
}
}
if ((recurse <= -1) || (recurse > 0 && entry.isDirectory())) {
recurse--;
files.addAll(listFiles(entry, filter, recurse));
recurse++;
}
}
}
return files;
}
}