Creating a Java VM from Native code
On Android init phase we are running init application that uses its init scripts to start all the code system services. We can add a new daemon easily if we are building a ROM by add an empty folder,...
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One of the features google added to linux kernel is a general purpose allocator /dev/ion. The new allocator allows us to allocate memory from different heaps and devices, virtual and physical User...
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AOSP – Creating a System Application
When we build a ROM for Android device we can add components on different layers. We can add daemons and libraries on the native layer, system services on the framework layer and system applications we...
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Android HIDL and Project Treble
One of the problems in Android is the fact that when a new version is released only a few devices can be updated. Actually, if you want to enjoy the latest version, you need to buy a new smartphone...
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AOSP – Adding a Native Daemon
Android is a great OS for many devices and not mobile only. You can even use Android on devices without display (headless). The most important thing about Android is the fact that it is open source and...
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AOSP – Creating a System Service
In the previous post, we built a native daemon in Android native layer. We wrote a simple application to communicate with the daemon using a socket (UDS/UDP/TCP). Most of the services provided by...
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Signing Android Application
All Android apps (.apk files) must be digitally signed prior to installation on a device and uploading to Android Play store. The embedded certificate can be self-signed and valid for 25+ years. No...
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