Database Info

Dual boot understanding

Hello everyone,
Can anybody explain how dual boot works.
Whether android is booted on top of windows mobile as some upper layer or does it rely on hardware as it is native OS installed. Is there any difference between native android phone and android booted from windows mobile, except missing some functionality?
Thanks
Cheers!

when you use heret to boot android winmo is shut down, then android runs as the native os, this is nessesary as without android being flashed to the devices rom there would be no way to boot it obviously. in theory if android is made stable enough on a device it would be possible to make an android rom for that device

To add some additional information:
You are probably talking about the Gen Y dual boot software.
Gen Y dualboot is nothing more than an application that runs immediately after Windows is booted. So before you get to the dualboot, Windows is actually already booted.
Then, after pressing Android, Windows Mobile launches the Haret, by which Windows Mobile shuts down and the Android Kernel loads up.
So to have it in a schematic view:
-----------------------------------------------------Stay in Windows Mobile
Kernel WM --> WM booted --> DualBoot <
-----------------------------------------------------Launch Android Kernel --> Android booted

[Q] Simpe app from 4.0.1 mono for android isnt working on lg gt540 2.3.7

here's the problem :
installed
xp sp3
vs 2010 ultimate
monoandroid 4.0.1
installer_r18-windows
- android 4.0.3 (API 15)
- android 4.0 (API 14)
- android 2.2 (API 8)
LGDrivers (I think, that is not necessary)
after i create the default app (with Button and click) in VS 2010
1. run with no debugger
( I try with both API 14 and API 8 too )
And I get :
name.name.apk
name.name-Signed.apk
2. adb install -r name.name-Signed.apk
i receive a text saying "success" and it works on my emulator
BUT
when I run this on my LG GT540 currently running 2.3.7 version I get a message saying:
application has unexpectedly stopped ..
I also tried copying the apk to the phones sdcard and it still didnt work and i also rebooted the phone after instaling the app.
what am i doing wrong ?
why do i get a double name for my app ?
I wont give up from mono for android. Its wonderful and new for me like C# programmer.
I only wont to see default mono app running on my mobile device.

application does not work on rooted samsung galaxy ace

The version checked in the settings of the phone shows 4.1.1, A rooted , custom rom of 4.1.1 is being used. However, while installing an apk that needs (min sdk of 15), I am getting this weird error in eclipse.
ERROR: Application requires API version 14. Device API version is 10 (Android 4.1.1)
Is this the case with custom roms ?

[GUIDE][NOOBS]All For Android👀 📱

Hey , Guys this Thread Is Specially Made for Noobs. With All Info For Android.
So , Let's Directly go to Topic
Firstly What Is Android?
• a robot with a human appearance.
•an open-source operating system used for smartphones and tablet computers which is based on Linux Os.
Source- Google
_____________________________
Version Of Android
Cupcake:
Android 1.5
Donut:
Android 1.6
Eclair:
Android 2.0
Android 2.1
Froyo:*(short for "frozen yogurt") & The Most successor Veraion
Android 2.2
Gingerbread:
Android 2.3
Honeycomb:
Android 3.0
Android 3.1
Android 3.2
Ice Cream Sandwich:
Android 4.0
Jelly Bean:
Android 4.1
Android 4.2
Android 4.3
KitKat:
Android 4.4
Lollipop:
Android 5.0
Android 5.1
Source-android.stackexchange
______________________________
What is Root?
★In Simple Word Rooting Means gives Read-Write[RW] permission on System Dictionary.★
Rooting*is the Android*equivalent of jailbreaking, a means of unlocking the operating system so you can install unapproved (by Google) apps, update the OS, replace the firmware, overclock (or underclock) the processor, customize just about anything, and so on.
Source- Google
______________________________
What is Recovery?
A combination of key presses (or instructions from a*command line) will boot your phone to recovery, where you can find tools to help repair (recover) your installation as well as install*official OS updates.
Source-Android A to Z
_____________________________
What is Bootloader?
•Every Android phone has a bootloader that instructs the operating system kernel to boot normally. But you need to understand one thing here that as Android OS is an open source OS and is available on a variety of different hardware, every manufacturer has their own version of bootloader specific for the hardware present in it’s environment.
Source-addictivetips.com
____________________________
★Advance Section★
1. Bootloop - Bootloop means your phone doesn't but up right, it's just starting and starting and nothing happens, or it's starting and shutting down and starting again. It just means your phone makes a loop while booting.
2. Brick - Brick means your phone can't boot up and you can only recover it with for example flash the stock rom. But there are different bricks for example soft bricks (for example bootloops) and hard bricks (for example doing and over the air=ota update when bootloader is unlocked). There are some other bricks and examples as well.
There Are Two Types of Bricks
1.Soft Brick - you can still turn your phone on but it doesnt really start (bootloop i think is a kind of soft brick. )
this kind of brick can be fixed through softwares like flashtool.
2. Hard Brick - you can't turn your phone on and it doesnt really start, you don't get any response from it.
Click to expand...
Click to collapse
3. Fastboot - Fastboot mode is used to flash a kernel if the bootloader is unlocked. With fastboot you flash a boot.img for your device, for example a kernel for a specific rom
Source - from( XDA)
_____________________________
What is Nandroid?
the type of permanent storage memory that your device uses, and Android. A*Nandroid*backup is a de-facto (by the hacking community) standard directory structure for backing up a perfect mirror image of your Android device.
Source - Google
_____________________________
What is Kernel ?
is a “deeper” line of code that rests beneath the surface, so to speak. It tells the software how to interact with the hardware.
____________________________
What is Custom Rom?
A*custom ROM replaces your device's Android operating system — normally stored in read-only memory — with a new version of the Android operating system.
Some Famous Custom Roms Are
°Cyanogen Mod
° Pac-Man
etc...
___________________________
What is Flashing?
Flashing is a process in which system's update Any Kind of files like Apps , System file etc...
___________________________
This Things Might Confused Many People But for Development of Android.
You Have To Totally Know This Types Of Things.

Good info for noobs:thumbup:

suresh.anthati said:
Good info for noobs:thumbup:
Click to expand...
Click to collapse
Thanks Dude

android emulate failed using AOSP source

Hi, I downloaded android full sources 5.1, 6.0, 7.0 and i built them.
I tried to check operating using the android emulator in sdk, but it failed except 5.1.
I replaced original image file( system.img, ramdisk.img, userdata.img) to new built files. And then I run. But I can't see android logo and it didn't progress.
I chose mini-emulator-arm-debug and original emulator image same to version and AOSP.
I didn't know why android 5.1 is operated but android 6.0 and 7.0 didn't do it. Has the method of execution changed?
So please help me.
1. The source build is succeeded.
2.Emulator screen showed only black. I tried to connect using adb shell but failed.