Compile Android application as part of AOSP source code
This post details about how you can integrate your Android application as part of Android OpenSource Build … Read more
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Test Android BOOT_COMPLETED Receivers Safely
A synthetic ADB broadcast can test receiver routing, but it does not reproduce a complete reboot. Build a minimal boot receiver, enqueue durable work, respect user-unlock and background limits, and verify both explicit broadcasts and genuine device boots.
Understanding Android Services with Example
A Service is an application component that can perform long-running operations in the background, and it does … Read more
Use mtrace to detect memory leaks in executable in Linux
The mtrace() function installs hook functions for the memory- allocation functions malloc, realloc, memalign, free. These hook … Read more
Clone a large Git repository
Recently, I needed to clone the ndk while downloading Android source, ndk size to clone was more … Read more
Understanding Django application “models”
A model is the single, definitive source of information about your data. It contains the essential fields … Read more
Format and Validate HTML, CSS, and JSON Safely
Formatting makes code consistent; linting catches suspicious patterns; validation checks a grammar or schema; minification optimizes delivery. Build a pinned local workflow for HTML, CSS, and JSON without pasting private source into an unknown website.
Solved: Django makemigrations “No changes detected”
When we are adding new model or modifying previous one, we have to inform the project about … Read more
Link Libraries Correctly in Android.mk
LOCAL_LDLIBS is appropriate for stable NDK system libraries such as log or z. External libraries should normally be declared as source-built or prebuilt ndk-build modules so headers, ABI selection, dependency order, packaging, and runtime loading remain reproducible.
Cross compiling Linux kernel for Beagleboard
We assume, we are compiling for omap3 beagleboard embedded hardware platform, Clone the kernel Download toolchain Extract … Read more
Fix PHP count(): Value Must Be Countable
An empty array is valid input to count() and returns zero. This warning means the runtime value is null, scalar, or otherwise non-countable; find where the type contract broke, then fix or normalize it intentionally.
HTML id vs class: Meaning, Selectors, and Pitfalls
An HTML id names one element uniquely within a document; class assigns one or more reusable category tokens. See where each belongs in CSS, JavaScript, fragment links, forms, and accessibility—and why duplicate IDs are more serious than a styling mistake.
Fix “staticfiles Is Not a Registered Tag Library”
The old `{% load staticfiles %}` library was removed from Django. Replace it with `{% load static %}`, then verify the template engine and staticfiles app before diagnosing missing assets or production serving separately.
Set / change the timezone in Django
If you have followed to create your first django project “Starting webserver using your first simple Django … Read more
Using conditional statements, if and if-else in Python
When you are writing python program, sometimes you need to make certain checks on variables and based … Read more
Solved : java.lang.OutOfMemoryError: Java heap space
When I was trying to compile latest repo sync Android source code ( Android 10 ), and … Read more
Use Single Instance Class / Singleton class in Android / Java
The single instance classes are mostly used when you don’t know how to create a object of … Read more
Using Decision Making Statements, if and if-else in C program
When you are writing C program, sometimes you need to make certain checks on variables and based … Read more
Fix MultipleObjectsReturned in Django and DRF
Django raises MultipleObjectsReturned when get() matches more than one row. The real fix depends on the domain: return a collection when duplicates are valid, or repair data and enforce uniqueness when exactly one row should exist.
Assembly program to Add two numbers
In this post, we will show a simple program which adds two numbers from two registers and … Read more
Define different urlpatterns in view.py for Django
As we have seen in our previous post “Developing REST API using functions in DRF application views” … Read more
Django REST Framework Routers, Without the Magic
A Django REST Framework router is a URL-pattern generator for ViewSets—not the browsable API itself. Build a small API, inspect every generated route, understand basename and action naming, and know when explicit paths are the clearer choice.
Set Up Flutter on Ubuntu and Read flutter doctor
Build a reliable Flutter development environment on Ubuntu, then prove each layer works. This setup covers the Flutter SDK, Android toolchain, licenses, emulator or USB device, a real test app, and the difference between required and optional flutter doctor checks.
Fix “No Toolchains Found” Android NDK Error
The mips64el toolchain error usually means an old Android Gradle Plugin or native build expects files removed from newer NDKs. Diagnose the version boundary, modernize the build, and use a legacy NDK only as a controlled archival fallback.