I am new to android. I am doing one app in that I used older version code(4.4) which is already available as project. I imported that project as module and added dependencies in my module "app". No errors are present at compile time or run time. It showing build successful. But when I am trying to install that apk file it was showing app not installed. It was not installing either in emulator or mobile. I thought that because of version difference so I changed the older version to newer version in manifest file and build.gradle file. After that also app was not installing. Can anybody help me why I am facing this problem.I am struggling from yesterday with this issue. Please help me.. I will be thankful.
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what is min sdk in your manifest and your android device/emulator version – Shakeeb Ayaz Jul 24 '15 at 07:03
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have you got just one main activity in your manifest ? and this in your manifest : `
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min sdk to 7 target sdk to 22.emulator 22 device version is 21. I have activites in my manifest file. Before added the code of older version it worked fine in emulator or mobile – user3534618 Jul 24 '15 at 07:11
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is version code number and version name reflect the output? – user3534618 Jul 24 '15 at 07:13
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And have you got any trouble in your logcat ? – Paul Jul 24 '15 at 07:30
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If I have apk file. when a button is clicked can I call that apk file? – user3534618 Jul 24 '15 at 08:06
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It was showing the following error "Could not access the Package Manager. Is the system running" – user3534618 Jul 24 '15 at 08:12
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i look this, perhaps can help you : [Error: Could not access the Package Manager. Is the system running? - At Android Studio](http://stackoverflow.com/questions/21526565/error-could-not-access-the-package-manager-is-the-system-running-at-android) – Paul Jul 24 '15 at 09:11
