Tutorials and more

Monday, February 1, 2016

info Android Material

Good read about Material Design

Components:
snackbar

Drawables tutorial

info Android Testing (and iOS)

Wednesday, January 27, 2016

info Android Security

WIP. work in progress, I'm writing this post to help others interested in Android Security :) enjoy!

Good read:
http://strazzere.com/papers/AAP-QPSI.pdf

Pretty cool tool to find potential security vulnerabilities :)
http://android-arsenal.com/details/1/2769

other: http://android-arsenal.com/details/1/3046

Android Security Code:
https://www.airpair.com/android/posts/adding-tampering-detection-to-your-android-app
https://manifestsecurity.com/android-application-security-part-21/

Android Code:
http://www.codota.com/android/methods/android.widget.ImageView/setVisibility

Must Watch videos:
https://www.youtube.com/watch?v=18tn_mF4XRg&feature=youtu.be

**Hacking Android eBook (good info)
https://library.oreilly.com/book/9781785883149/hacking-android/toc

Thursday, January 7, 2016

SharedPreferences in Android [ put string and get string ]

PUT

private SharedPreferences sharedPreferences;

sharedPreferences.edit()
        .putString("KEY_NAME", name)
        .apply();

GET

String NameURL= getPref("KEY_NAME", getContext());

public static String getPref(String key, Context context) {
    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);

  return preferences.getString(key, null);

Resources:

https://medium.com/google-developers/sharedpreferences-is-your-answer-to-simple-storage-a7c8499ea8ff#.7eoyjrjgi

Thursday, December 17, 2015

How to run Android App with latest Android tools

Google Android info

Android Styling:
https://blog.stylingandroid.com/percent-part-1/

Install latest Android Studio:

http://tools.android.com/preview-channel

Install latest Android emulator:

http://tools.android.com/tech-docs/emulator

Enable Instant run:

http://tools.android.com/tech-docs/instant-run

Google Android tech docs:

http://tools.android.com/tech-docs

Android developers blog
http://android-developers.blogspot.com/

Android best practices:
https://github.com/futurice/android-best-practices
http://guides.codepath.com/android

Android devices Dashboard(google)
https://developer.android.com/about/dashboards/index.html

SourceTree uncommit
http://flummox-engineering.blogspot.com/2014/10/how-to-undo-git-commit-in-sourcetree.html

Wednesday, December 16, 2015

Butterknife Library for Android

Butterknife

Is a view "injection" library for Android. It will reduces boilerplate code.

Example:

Add dependency to app/build.gradle

dependencies {
  compile 'com.jakewharton:butterknife:7.0.1'
}

In main.xml declare an image widget id name "image"
In main.java start using @Bind to declare each variable

public class Main extends AppCompatActivity {
private static final String ITENT_TAG= "chapter"; 
private Chapter chapter;
@Bind(R.id.button) Button myButton; 
@Bind(R.id.text) TextView myText;
@Bind(R.id.image) 
ImageView myImage;  
@Override public void onCreate(Bundle savedInstanceState) 
{

        super.onCreate(savedInstanceState);         setContentView(R.layout.activity_detail);         ButterKnife.bind(this); 
@OnClick(R.id.button)    protected void Toast(){

Toast.makeText(getApplicationContext(),"Hello Android Butter Knife",Toast.LENGTH_LONG).show();}
}

myText.setText("Hello!");
res = getResources();
 myImage.setImageDrawable(res.getDrawable(R.drawable.myimage));

Also initialize ButterKnife in OnCreate:

 ButterKnife.bind(this);

Resources:
http://www.sitepoint.com/tidying-code-with-android-butterknife/
https://guides.codepath.com/android/Reducing-View-Boilerplate-with-Butterknife

Sunday, December 13, 2015

Crashlytics for Android app

What is Crashlytics?

It's a great tool for developers; developer can get a lot of statics from the app... it's free.
Delivers crash reporting across devices in real-time.
Performs analysis of every thread on every Android device to identify the most important issues.

**Usage is super easy**

How to Setup:

Register here https://get.fabric.io/
In Android Studio install the Crashlytics plugin -Android Studio -> Preferences -> Plugins -> "Fabric plugin" Install
Now you will have the Fabric icon in Android Studio (image one below).
Now select your app and enable Crashlytics, everything will be setup automatically just follow the instructions provided.
Done. Build and install your App.
Go to https://fabric.io/ to see the statistics of your app(image two below).

(image one)

(image two)

References:
http://www.crashlytics.com/blog/its-finally-here-announcing-crashlytics-for-android/
https://fabric.io/kits/android/crashlytics/summary

Great tutorial:
http://www.codedevplus.com/integrating-crashlytics-from-fabric-in-android/
https://fabric.io/kits/android/crashlytics/install

Monday, February 1, 2016

Wednesday, January 27, 2016

Thursday, January 7, 2016

Thursday, December 17, 2015

Wednesday, December 16, 2015

Butterknife

public class Main extends AppCompatActivity {private static final String ITENT_TAG= "chapter";

private Chapter chapter;

@Bind(R.id.button) Button myButton;

@Bind(R.id.text) TextView myText;

@Bind(R.id.image)

ImageView myImage;

@Override public void onCreate(Bundle savedInstanceState)

{ super.onCreate(savedInstanceState); setContentView(R.layout.activity_detail); ButterKnife.bind(this);

@OnClick(R.id.button) protected void Toast(){

Toast.makeText(getApplicationContext(),"Hello Android Butter Knife",Toast.LENGTH_LONG).show();}

myText.setText("Hello!");

res = getResources(); myImage.setImageDrawable(res.getDrawable(R.drawable.myimage));

Sunday, December 13, 2015

What is Crashlytics?

How to Setup:

public class Main extends AppCompatActivity {
private static final String ITENT_TAG= "chapter";

{
super.onCreate(savedInstanceState); setContentView(R.layout.activity_detail); ButterKnife.bind(this);

res = getResources();
myImage.setImageDrawable(res.getDrawable(R.drawable.myimage));