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Source: Internet
Author: User

Sharing is a lot of apps, and there may be a lot of problems in the development process. Here's the question of returning code =-4 for a simple word.

The error analysis in the document is inconsistent with the signature, but how to keep the signature is not clear, the signature is related to Project's KeyStore. The development of the time each key is different, so. To remain consistent. You need to start with a key package, and then install the packaged apk, using the signature tool to get the signature. Set to the platform, in the future to test, you have to use the packaged APK installation will be able to perform the installation directly or there will be code =-4.

Note: Be sure to pack and get your signature before you can get the signature directly with the executed project ....

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