墨墨背單詞不能安裝，出現“未安裝應用程式”，補充解決辦法

試了上個文章的所有辦法，依然解決不了，雖然知道重置，重裝系統可以解決，但堅決不想用。

有用了以下辦法：

1. 下載下傳了apk編輯器，試各種安裝路徑。

2. 用“幸運破解器”，重建和安裝，依然不行

3. 懷疑簽名有問題，用Zipsign,也不行

最終解決的方法是，在應用程式管理界面重置所有apps權限：

即：ettings>Apps>All>Menu key>Reset app permissions or reset app preferences. 

最終解決。

附老外總結的該問題原因：

1. insufficient storage space: Your storage space may have filled up with no more space to accommodate new apps.
2. Corrupted app or apk file: This is most common with apps downloaded from outside Google Play Store. The app is either corrupted or incompletely downloaded or copied as the case maybe.
3. Incorrect app install location: Some apps are meant to be only installed on phone memory while some others can be installed on both phone memory and SD card. Trying do otherwise with the former can bring up this errors.
4. Installation on a mounted SD card: Maybe, your SD card is mounted on a laptop or elsewhere. Trying to install anything in this state will result in errors because the SD card is inaccessible.
5. Corrupted storage (Phone and SD card): This is probably the most common cause of this error. If the storage of your device is corrupted, any app installation will be impossible.
6. Apk signature/certificate clash: Installing another version of an app (with a different signed certificate) on the same device will probably result in this error. Installing an unsigned app could also result in this error.
7. App permission errors or temporary OS glitches could also bring about this error.