Java tutorial
//package com.java2s; import android.content.Context; import android.os.Environment; import java.io.File; import java.io.IOException; public class Main { public static File getCacheSubDirectory(Context context, String cacheSubDir) { File appCacheSubDir = new File(getCacheDirectory(context), cacheSubDir); if (!appCacheSubDir.exists()) appCacheSubDir.mkdirs(); return appCacheSubDir; } /** * 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(Environment.MEDIA_MOUNTED)) { appCacheDir = getExternalCacheDir(context); } if (appCacheDir == null) { 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()) { if (!appCacheDir.mkdirs()) { //L.w("Unable to create external cache directory"); return null; } try { new File(appCacheDir, ".nomedia").createNewFile(); } catch (IOException e) { //L.i("Can't create \".nomedia\" file in application external cache directory"); return null; } } return appCacheDir; } }