first lesson - android progamming

Presentation Title© free-ppt-templates.com
New Activities and Intents
Rich and responsive Layouts
How we will building Sunshine?
Introducing Sunshine
Have ability to share the weather with freands
Push notification about weather condition
© free-ppt-templates.com
Simple consept
So, How we will building it?
Prepare your Android Studio, make sure you already install it properly
Why we should using Android Studio?, Why not eclipse?
The Final version (1.1) of android studio was released
There are many features that needed by developer to help develop their app
And many more
Need a help for installing Android Studio?
If you need a help for installing android studio you can see it in this page
What we choose?
Choose API Level 10 (2.3.3) Gingerbread if you want to support most android device.
Why not API Level 8 (2.2) Froyo?
Lower API levels target more devices, but have fewer features available.
Right click on "app" directory then choose -> new -> image asset
You can choose your own icon or you can use icon we provide in this page http://asc.harisuddin.com/finish-creating-a-new-project
You can use emulator like Android Virtual Device (AVD), genymotion (recommended), bluestack, etc.
You also can use your phisical devices to run your project
Github
Before we continue to our project, i ask you to create account in github
You have 20 minutes to create it, when you finish submit your account name to bit.ly/ascGithubSubmission
bit.ly/KuisionerASC1
In this courses we will using sunshine github repository at https://github.com/udacity/Sunshine-Version-2
After courses finish (every week) you asked to push your project to github, so we can monitor your project activity.
How to push it?
Don't worry, Android Studio has a feature to easily share your project to github.
Create UI
ListView is a view that contains one or more view that used to display sets of data. In this case, ListView is used to display weather information.
Case : Create new List Item
As we may know from previous slide that ListView contains one or more view. So, now we need to make view that represent individual item that will be viewed in ListView. Later, we will name it as ListItem.
Now, make new layout called list_item_forecast, define a TextView as the root view, and give ID list_item_forecast_textview to the TextView. If you have problem regarding the instruction above, feel free to asks the facilitator.
Case : Modify fragment_main
We need to modify fragment_main that represent our previous ‘Hello World’ to become layout that contains ListView with ID listview_forecast.
Because we only have one view, we also change our layout to FrameLayout.
ListView
After completing case above, we have fragment that contains ListView, ready to populated with data. ListView will use ListItem layout (the one we created before) to display the data to the screen.
In MainActivity.java, navigate to PlaceholderFragment class, and create ArrayList of data on onCreateView method.
Adapter
Case : Initialize the Adapter
After knowing the usage of Adapter, we will initialize an Adapter for our fake data to be populated to the ListView.
Create ArrayAdapter<String> in PlaceholderFragment class onCreateView() with parameters:
Context
Context : Interface to global information about an application environment. This is an abstract class whose implementation is provided by the Android system. It allows access to application-specific resources and classes, as well as up-calls for application-level operations such as launching activities, broadcasting and receiving intents, etc.
Referencing View to Code
You may notice that we haven’t connect our layout to the code. To connect layout to the code, simply use
<ViewClass> <varName> = (<ViewClass>) this.findViewById(R.id.<ID of the view>);
Case : Bind Adapter to the ListView
After we know how to reference a view to the code, we will try to reference the ListView on the layout to the PlaceholderFragment class onCreateView()
After that, call method setAdapter from ListView and give parameter the data.
Thanks for attending our first lesson.
In the next lessons we will learn how to connect our sunshine to the cloud, so i hope you prepare your self with learning about HTTP Request, AsyncTask, Permission, and JSON(Javascript Object Notation)
for evaluation to our first lesson please submit your suggestion here:

first lesson - android progamming

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