package com.nostra13.universalimageloader.utils;
import java.io.File;
import java.io.IOException;
import android.content.Context;
import android.os.Environment;
/**
* Provides application storage paths
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
*/
public final class StorageUtils {
private static final String INDIVIDUAL_DIR_NAME = "uil-images";
private StorageUtils() {
}
/**
* Returns application cache directory. Cache directory will be created on SD card
* <i>("/Android/data/[app_package_name]/cache")</i> if card is mounted. Else - Android defines cache directory on
* device's file system.
*
* @param context
* Application context
* @return Cache {@link File directory}
*/
public static File getCacheDirectory(Context context) {
File appCacheDir = null;
if (Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) {
appCacheDir = getExternalCacheDir(context);
}
if (appCacheDir == null) {
appCacheDir = context.getCacheDir();
}
return appCacheDir;
}
/**
* Returns individual application cache directory (for only image caching from ImageLoader). Cache directory will be
* created on SD card <i>("/Android/data/[app_package_name]/cache/uil-images")</i> if card is mounted. Else -
* Android defines cache directory on device's file system.
*
* @param context
* Application context
* @return Cache {@link File directory}
*/
public static File getIndividualCacheDirectory(Context context) {
File cacheDir = getCacheDirectory(context);
File individualCacheDir = new File(cacheDir, INDIVIDUAL_DIR_NAME);
if (!individualCacheDir.exists()) {
if (!individualCacheDir.mkdir()) {
individualCacheDir = cacheDir;
}
}
return individualCacheDir;
}
/**
* Returns specified application cache directory. Cache directory will be created on SD card by defined path if card
* is mounted. Else - Android defines cache directory on device's file system.
*
* @param context
* Application context
* @param cacheDir
* Cache directory path (e.g.: "AppCacheDir", "AppDir/cache/images")
* @return Cache {@link File directory}
*/
public static File getOwnCacheDirectory(Context context, String cacheDir) {
File appCacheDir = null;
if (Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) {
appCacheDir = new File(Environment.getExternalStorageDirectory(), cacheDir);
}
if(appCacheDir == null || (!appCacheDir.exists() && !appCacheDir.mkdirs())){
appCacheDir = context.getCacheDir();
}
return appCacheDir;
}
private static File getExternalCacheDir(Context context) {
File dataDir = new File(new File(Environment.getExternalStorageDirectory(), "Android"), "data");
File appCacheDir = new File(new File(dataDir, context.getPackageName()), "cache");
if (!appCacheDir.exists()) {
try {
new File(dataDir, ".nomedia").createNewFile();
} catch (IOException e) {
L.e(e, "Can't create \".nomedia\" file in application external cache directory");
}
if (!appCacheDir.mkdirs()) {
L.w("Unable to create external cache directory");
return null;
}
}
return appCacheDir;
}
}