ClearCacheInAndroid.java

import android.content.Context;

import java.io.File;

public class CacheManager {
    /**
     * Private Constructor to make this a Utility class.
     */
    private CacheManager() {
        // Private constructor
    }

    /**
     * Deletes app's cache.
     * @param context app context
     */
    public static void deleteCache(Context context) {
        try {
            File dir = context.getCacheDir();
            deleteDir(dir);
        } catch (Exception e) { e.printStackTrace();}
    }

    /**
     * Does the actual deletion of our app's cache.
     * @param dir cache directory
     * @return boolean value of whether operation was successful or not.
     */
    private static boolean deleteDir(File dir) {
        if (dir != null && dir.isDirectory()) {
            String[] children = dir.list();
            for (int i = 0; i < children.length; i++) {
                boolean success = deleteDir(new File(dir, children[i]));
                if (!success) {
                    return false;
                }
            }
            return dir.delete();
        } else if(dir!= null && dir.isFile()) {
            return dir.delete();
        } else {
            return false;
        }
    }
}