1、打完包后签名
jarsigner -verbose -keystore ChangeBackgroundWidget.keystore -signedjar ChangeBackgroundWidget_signed.apk ChangeBackgroundWidget.apk {alias}
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{alias}为keystore的别名
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2、签名后字节对齐
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zipalign -v 4?ChangeBackgroundWidget_signed.apk??ChangeBackgroundWidget_signed_aligned.apk
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