Android: Anyway to know if 'Unknown Sources' is checked?

问题

Is there any way to find out if the user has checked the 'Unknown Sources' checkbox in the 'Application settings' menu?

回答1:

You can use the INSTALL_NON_MARKET_APPS setting. Something like that :

boolean canInstallFromOtherSources = Settings.Secure.getInt(Settings.Secure.INSTALL_NON_MARKET_APPS) == 1;

来源：https://stackoverflow.com/questions/4594503/android-anyway-to-know-if-unknown-sources-is-checked