Android Studio - Basic Activity

Basic Activity

Basic Activity è un tipo di progetto che prepara le basi per costruire la propria app.

AndroidManifest.xml

	<?xml version="1.0" encoding="utf-8"?>
	<manifest xmlns:android="http://schemas.android.com/apk/res/android"
	package="com.dm.tutorialbasicactivity">

	<application
	android:allowBackup="true"
	android:icon="@mipmap/ic_launcher"
	android:label="@string/app_name"
	android:roundIcon="@mipmap/ic_launcher_round"
	android:supportsRtl="true"
	android:theme="@style/AppTheme">
	<activity
	android:name=".MainActivity"
	android:label="@string/app_name"
	android:theme="@style/AppTheme.NoActionBar">
	<intent-filter>
	<action android:name="android.intent.action.MAIN"/>

	<category android:name="android.intent.category.LAUNCHER"/>
	</intent-filter>
	</activity>
	</application>

	</manifest>

content_main.xml

	<?xml version="1.0" encoding="utf-8"?>
	<android.support.constraint.ConstraintLayout
	xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:tools="http://schemas.android.com/tools"
	xmlns:app="http://schemas.android.com/apk/res-auto"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	app:layout_behavior="@string/appbar_scrolling_view_behavior"
	tools:showIn="@layout/activity_main"
	tools:context=".MainActivity">

	<!--Aggiunta di un TextView (casella di testo)-->
	<TextView
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="Tutorial basic activity"
	app:layout_constraintBottom_toBottomOf="parent"
	app:layout_constraintLeft_toLeftOf="parent"
	app:layout_constraintRight_toRightOf="parent"
	app:layout_constraintTop_toTopOf="parent"
	android:textSize="28sp"/> <!--Dimensione del testo da visualizzare-->

	</android.support.constraint.ConstraintLayout>

MainActivity.kt

	package com.dm.tutorialbasicactivity

	import android.os.Bundle
	import android.support.design.widget.Snackbar
	import android.support.v7.app.AppCompatActivity;
	import android.view.Menu
	import android.view.MenuItem

	import kotlinx.android.synthetic.main.activity_main.*

	class MainActivity : AppCompatActivity() {

	override fun onCreate(savedInstanceState: Bundle?) {
	super.onCreate(savedInstanceState)
	setContentView(R.layout.activity_main)
	setSupportActionBar(toolbar)

	fab.setOnClickListener { view ->
	Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
	.setAction("Action", null).show()
	}
	}

	override fun onCreateOptionsMenu(menu: Menu): Boolean {
	// Inflate the menu; this adds items to the action bar if it is present.
	menuInflater.inflate(R.menu.menu_main, menu)
	return true
	}

	override fun onOptionsItemSelected(item: MenuItem): Boolean {
	// Handle action bar item clicks here. The action bar will
	// automatically handle clicks on the Home/Up button, so long
	// as you specify a parent activity in AndroidManifest.xml.
	return when (item.itemId) {
	R.id.action_settings -> true
	else -> super.onOptionsItemSelected(item)
	}
	}
	}

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