Android clear local data cache code

/* * File name: DataCleanManager.java * Description: The main functions are to clear internal/external cache, clear database, clear sharedPreference, clear files and clear custom directory*/

import java.io.File;
import android.content.Context;
import android.os.Environment;

/** * This application data clear manager */
public class DataCleanManager {
    /** * Clear the internal cache of this application (/data/data/com.xxx.xxx/cache) * * @param context */
    public static void cleanInternalCache(Context context) {
        deleteFilesByDirectory(context.getCacheDir());
    }

    /** * Clear all databases of this application (/data/data/com.xxx.xxx/databases) * * @param context */
    public static void cleanDatabases(Context context) {
        deleteFilesByDirectory(new File("/data/data/"
                + context.getPackageName() + "/databases"));
    }

    /**
     * * Clear this app's SharedPreference(/data/data/com.xxx.xxx/shared_prefs) * * @param
     * context
     */
    public static void cleanSharedPreference(Context context) {
        deleteFilesByDirectory(new File("/data/data/"
                + context.getPackageName() + "/shared_prefs"));
    }

    /** * Clear this application database by name * * @param context * @param dbName */
    public static void cleanDatabaseByName(Context context, String dbName) {
        context.deleteDatabase(dbName);
    }

    /** * Clear the content under /data/data/com.xxx.xxx/files * * @param context */
    public static void cleanFiles(Context context) {
        deleteFilesByDirectory(context.getFilesDir());
    }

    /**
     * * Clear the contents of the external cache (/mnt/sdcard/android/data/com.xxx.xxx/cache) * * @param
     * context
     */
    public static void cleanExternalCache(Context context) {
        if (Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED)) {
            deleteFilesByDirectory(context.getExternalCacheDir());
        }
    }

    /** * Clear the files in the custom path, please be careful not to delete them by mistake. And only supports file deletion in the directory * * @param filePath */
    public static void cleanCustomCache(String filePath) {
        deleteFilesByDirectory(new File(filePath));
    }

    /** * Clear all data of this application * * @param context * @param filepath */
    public static void cleanApplicationData(Context context, String... filepath) {
        cleanInternalCache(context);
        cleanExternalCache(context);
        cleanDatabases(context);
        cleanSharedPreference(context);
        cleanFiles(context);
        for (String filePath : filepath) {
            cleanCustomCache(filePath);
        }
    }

    /** * The deletion method will only delete files under a certain folder. If the incoming directory is a file, it will not be processed. * * @param directory */
    private static void deleteFilesByDirectory(File directory) {
        if (directory != null && directory.exists() && directory.isDirectory()) {
            for (File item : directory.listFiles()) {
                item.delete();
            }
        }
    }
}