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I am new android app developer i want make app for tablets and phone . i don't know which api level to create application and i need sample tutorial to me .please refer tom some books or web link tom me thanks for advance
Well you need to determine is what is a valid tablet as there are plenty out there running 2.1, 2.2, 2.3, 3.0, 3.1, 3.1 etc before you even get to the latest ICS which is already on a newer version so this covers levels 7 through to 15.
The other issue is that there are no phones I am aware of running Android 3.X.
I would target level 14 which is ICS but this cuts off many phones running 2.2 and above so you need to code your application to detect what the api level is and run code depending on what the api level is you detect at runtime.
Additional links courtesy of #Renard
These libraries seem to offer what you want without you having the headache of dealing with different api levels yourself.
http://actionbarsherlock.com/ and http://nineoldandroids.com/
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I am new to andriod and currently have the Marshmellow API on my system...is it important to download previous versions before i can build apps? If it is, which API version will you suggest?
Thanks.
What you're asking is purely a matter of opinion. However, I will say that if your app is targeting a minimum version of the API that's different than the maximum, you might want to have both the minimum and maximum versions to test against. It depends completely on your particular situation. But obviously you only need one to get started.
You can build apps using latest API only but if you want to reach more devices and users, you should get previous APIs at least to test them.
Take a look at the newest Platform Version usage chart provided:
No, it is not required to download previous versions of android. You can write your app by using API-23 sdk(marshmallow)
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i study a course of development android application, i want to see a real professional code.
Is have a way to find in web a real working android applications and inspect their code for learning purpose?
Have a look at
https://github.com/google/iosched/tree/master/android
Google I/O is a developer conference held each year with two days of deep technical content featuring technical sessions and hundreds of demonstrations from developers showcasing their technologies.
This project is the Android app for the conference. The app supports devices running Android 4.0+, and is optimized for phones and tablets of all shapes and sizes
You can explore online repository hosting platform Github for Android projects and for others,too. There are huge number of good projects.
Android provides official sample applications projects for each API version. You can download them via SDK manager and also from google's android developer site
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Well i am trying to find a good software which helps me in coding. Hassle free and a bit helpy?
As of now eclipse is generally used by most of the people around the world. You can download the same either from eclipse official site and download the plugin for the same
Or you can use Android studio for the same. To do the same you can download it from the official android developers site https://developer.android.com/sdk/index.html .
Do keep in mind that after some time, android studio may be used more by people as it is developed only for android development and also google is stopping to provide support for eclipse.
One more thing that, once you download the software, you will need to install sdk's for the api level for which you want to develop
All the support for development for android is available at the above mentioned link. Information about all the libraries are also available at the same. For more resources, you can always use youtube for the possible leacture series and also use stackoverflow and codata whenever you are stuck.
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I am looking for the source code of the android lock screen. It can be for any version of Android (1.5, 1.6, 2.0, etc).
I tried looking in the repository at: https://android.googlesource.com/, but it doesn't look like it's under platform/frameworks/base. Maybe it's closed source?
Do an actual full checkout of the source according to Google's directions.
As of Android 4.2, the keyguard source is at frameworks/base/policy/src/com/android/internal/policy/impl/keyguard. There's a mirror on GitHub you can look at online (I pegged this link to the JB MR 1.1 release in case the location changes again in a future release).
When this question was originally answered, Android 2.3 and lower had their lockscreen source at frameworks/policies/base/phone/com/android/internal/policy/impl.
You can also view these sources online in their GitHub mirror; that source is still kicking in the current repo, but hasn't been updated in several years.
For those who are on kitkat (android 4.4) or above source code, it seems the code has been moved to
frameworks/base/packages/Keyguard
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I am looking for the source code of the android lock screen. It can be for any version of Android (1.5, 1.6, 2.0, etc).
I tried looking in the repository at: https://android.googlesource.com/, but it doesn't look like it's under platform/frameworks/base. Maybe it's closed source?
Do an actual full checkout of the source according to Google's directions.
As of Android 4.2, the keyguard source is at frameworks/base/policy/src/com/android/internal/policy/impl/keyguard. There's a mirror on GitHub you can look at online (I pegged this link to the JB MR 1.1 release in case the location changes again in a future release).
When this question was originally answered, Android 2.3 and lower had their lockscreen source at frameworks/policies/base/phone/com/android/internal/policy/impl.
You can also view these sources online in their GitHub mirror; that source is still kicking in the current repo, but hasn't been updated in several years.
For those who are on kitkat (android 4.4) or above source code, it seems the code has been moved to
frameworks/base/packages/Keyguard