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PackageManager.getInstalledPackages () returns an empty list

I am facing a very strange situation when using the PackageManager.getInstalledPackages () method. The first time I start my activity, I get a valid list of all installed packages. But the second time I start my activity, I get an empty list ... What could be the reason for this?

I use this code to get the list: List pkgList = getPackageManager (). GetInstalledPackages (PackageManager.GET_ACTIVITIES);

I am building against 1.6 SDK with compatibility for 1.5+

Thanks in advance for any suggestions / help ... I am really puzzled by the reason and can't think of what I'm doing wrong.

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2 answers

Perhaps for some reason you need to call for the main application flow PackageManager. I have not tried using it with AsyncTask.

UPDATE 2018-03-26 : PackageManagerin general, it is normal to start background threads, in particular getInstalledPackages().

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You get an empty list because the PackageManager is dead, because the IPC buffer used to return the list of installed applications has grown larger than the buffer size of 1 MB (according to version 4.4).

Starting with API 15, the same behavior will generate TransactionTooLargeException. In API <15, only an empty list is returned, and sometimes a small error is visible in logcats.

getInstalledPackages() . , . , , , IPC- .

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