apk downloaded to the phone memory, analytical error during installation

To do an upgrade of the function, the new apk download to the phone memory, the address is / data / data / packagename / apkname, after the download is complete, automatically when you install the wrong resolution, this is how it happened, what is needed is not Permissions ah?<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
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I have also this problem before, to 99 percent got stuck, wait a minute automatically when you install the wrong resolution, the right to be the Update button to update the package directly in the server download page button to play the role of a connection, For example http://127.0.0.1:8080/is/client.apk
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cited a floor reply:

before me is the problem, to 99% on stuck later on automatically when you install the wrong resolution, after doing an Update button to update the package directly to it, in the service side will play the role of a connection with a web download, buttons, such http://127.0.0.1:8080/is/client.apk

Because the download is not complete, so the reported analytical error ah! Learn.
Then I downloaded the server side with this apk package, how to install updates on your mobile phone to achieve it?
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You download the version inconsistency? Or set up a problem
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Re under again
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I think your phone android version is too low, and the application version caused high
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See you what code?

Let him automatically install. . . . . .

How do you write the code
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/ Data / data / packagename / apkname this directory is not installed "mounting system" insufficient permissions
The following can be put sdcard
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Try to put the SD card
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Try to delete the original version of the landlord and then loaded
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Landlord, you solve the problem yet? I also encountered the same problem, when there is no SD card, the APK file to download to the phone memory inside, you can not install it, the old package prompted resolve the problem. . .
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Ditto, I have encountered this situation, when the updated version is downloaded to the SD card can be updated, but downloaded to the phone memory when parsing package error report, the landlord resolved, prompt, thank you! ! !