How to modify the application signature of Android system

Replace icon: decompile apk to find icon file (in rec's drawable) for replacement (note: hdpi ldpi xdpi xxdpi should be replaced). Signature (mt Manager) can be reloaded with replacement words: decompile to find androudxxxx.xml file, if not, decompile arsc file to find app_name to modify and save signature.

What do I need to renew my Canadian study visa in China? Do you need a copy of your ID card?

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I love sad sentences that I can't get, and set 48 as personality signatures.

Details of Vae.

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What is the telephone number of China Jianguo Building Group Guangxi Yunyang Construction Co., Ltd.

Reference of digital signature

What does the person in charge of the unit mean?