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AOSP Framework: Persistent Storage Methods for System-Wide Values

Executive Summary

This report explores mechanisms for storing system-wide configuration and state values that persist across device reboots and are accessible from any framework component in AOSP. Using Quick Settings tile states (WiFi toggle, airplane mode) as the reference use case, we examine five primary approaches: Settings Provider, System Properties, System Config XML, Custom Content Providers, and Service-Local Storage. Each method has distinct trade-offs regarding persistence, accessibility, performance, and complexity.

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Table of Contents

bhardwajAbhi

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"
    defaultConfig {
        applicationId "application.yourcompany.domain"
        versionCode 100
        versionName "1.0.0"

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Building custom SDK

Logs of building custom SDK

first: modifying proper files to add new API

I want to modify the setWifiEnabled function in WifiManager class in framework. actually I want to add new function with same name but with different input variables to get password string too. default signature of function is:

public boolean setWifiEnabled(boolean enabled);

bhardwajAbhi

Boot Image Extraction Guide

Guide on how to extract a boot image from any Android phone without needing to root using Magisk and without a custom recovery.

Most of the time when individuals buy a new phone, they encounter challenges when attempting to root their phone because they need a boot image first to patch, and most phones don't have a custom recovery available specifically designed for their device. Sometimes finding their firmware on the internet becomes difficult. Consequently, rooting such phones becomes a formidable task. So in this guide, I will provide a comprehensive solution for users who want to extract the boot image from their phone without needing to root it first or download firmware from the internet and also without custom recovery.

Getting started!

Before diving into the guide, please thoroughly review the [Frequently Asked Questions (FAQ)](https://github.com/phhusson/treble_experimentations/wiki/Frequently-Asked-Questions-%28FAQ%29

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Reversing / Malware Analysis / Assembly -resources

Reverse engineering focusing on x64 Windows.

https://github.com/0xZ0F/Z0FCourse_ReverseEngineering

Applied Reverse Engineering Series

bhardwajAbhi

• On-Device Machine Learning In Android: Frameworks and Ecosystem
• Using C/C++ in Android: A Comprehensive Guide For Beginners
• Chaquopy: Using Python In Android Apps
• Deploying Scikit-Learn Models In Android Apps With ONNX ( GitHub )
• Deploying TF models on Heroku for Android ( GitHub )
• Realtime Depth Estimation In Android ( [GitHub](https://github.com/shubham0204/Realtime_MiDaS

bhardwajAbhi

import tkinter as tk
from tkinter import scrolledtext
from tkinter import filedialog

class TextViewer:
    def __init__(self, root):
        self.root = root
        self.root.title("Text Viewer")

        self.line_numbers = tk.Text(root, width=4, height=30, bg="lightgray", state="disabled", padx=5)

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...
        <!-- Handles App Widget Lifecycle events as well as resizing the widget to 2 months if enough room exists. -->
        <receiver
                android:name=".appwidget.receiver.ConsolidatorWidgetReceiver"
                android:label="@string/app_name"
                android:enabled="@bool/glance_appwidget_available"
                android:exported="false">
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>

bhardwajAbhi

Context myContext = getApplicationContext().createPackageContext
     ("com.cr.sharedprefexampleone", Context.MODE_WORLD_WRITEABLE);
SharedPreferences testPrefs = myContext.getSharedPreferences 
     ("sharedprefone", Context.MODE_WORLD_READABLE);
String prefString = testPrefs.getString("time", "Couldn't find");