要求使用的權限:
* READ_HISTORY_BOOKMARKS, WRITE_HISTORY_BOOKMARKS: 用來顯示與清除瀏覽器中的瀏覽紀錄
* INTERNET: for sending the crash report
* GET_PACKAGE_SIZE, PACKAGE_USAGE_STATS: get the size information of apps
* BIND_ACCESSIBILITY_SERVICE: this app uses Accessibility services to automate the function (e.g. clear cache), optional. It helps those who have difficulty in tapping and complete the task easier
* WRITE_SETTINGS: prevent the screen rotation during the automatic function
* SYSTEM_ALERT_WINDOW: draw a wait screen above other apps during the automatic function