![]() ![]() ![]() So by using the methods of the ContentResolver object, the requests are passed on the Content Provider on the other side, which fulfills the request and conveys the result. The side that wants to access the data calls getContentResolver() with a URI that represents the requested database, and the ContentResolver object that is returned has methods like insert(), query(), update(), and most interestingly, call(). The most common use for this is the contact list (as in a phonebook). ![]() So the Content Provider is expected to have some kind of database with row/column tables, just like good old SQL. This is an Android-specific IPC API that allows Android components (including apps) to expose information to just other components, with a noSQL-like set of methods. OK, so a quick word on Android Content Providers. Anyhow, the trick is that the actual access to the settings database (XML / ABX files, actually) is through the SettingsProvider class, which extends ContentProvider. What this service actually does, is to do the work as requested by the “settings” command-line utility. Strategy #2 was to follow the SettingService class. So they are accessible only from within Android’s core classes. But alas, the methods that manipulate the “config” namespace are not exposed to the API level. Strategy #1 was to use the API methods of to change the setting values directly. So if the built-in utility won’t do that for me, how about writing a little thingy of my own? The strategiesĪs mentioned in that post, the device’s config settings are more than apparently stored in an XML file, which isn’t really an XML file, but rather a file in ABX format, which is some special Android thing with currently no reliable toolset for manipulation.Īndroid’s own “settings” command-line utility allows manipulation of these settings, but specifically not the “config” namespace. Which turns out to be a bad idea with Android, as evident from below. I am however well-versed with Linux machines in general, which is why I’m inclined towards plain command-line programs. ![]() Let’s be honest: Stopping the hibernation is by itself not reason enough for all the efforts I’ve put in, but it’s a good way to get acquainted with Android in a way that will hopefully help me to solve issues in the future.Īnd this is a good place to mention that neither Java nor Android is not what I do for living, so no wonder I get into nonsense. Fetch the source code of some boilerplate app somewhere, and take it from there. So if you’re reading this because you want to do something quick and dirty utility for Android, my message is: Don’t. It’s just that I learned that it’s useless. So I did manage to get the program running. But be warned: This is most likely not very useful, because the better part of that API can’t be used. It’s one of several attempts I’ve made to stop the automatic hibernation of unused app, as discussion on this other post of mine.Įxcept for a lot of conclusions about what is impossible, this post shows how to compile and run a plain Java program that can access Android’s API functions. This post is a messy collection of things I wrote down as I tried to make a simple Java command-line (as in adb shell) utility for making a change in the device’s config settings. This post was written by eli on October 8, 2022 ![]()
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