CS619 Android 101 BENCE CSERNA Android: Manifest example Android: - - PowerPoint PPT Presentation

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Jan 17, 2023 155 likes •205 views

Project #1: Color Guess Game CS619 Android 101 BENCE CSERNA Android: Manifest example Android: Manifest <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="net.cserna.bence.colorguess

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CS619 Android 101

BENCE CSERNA

Project #1: Color Guess Game Android: Manifest

! Android application descriptor

! Permissions (Internet, Record sound, Send

text, Vibration)

! Every component is described here

! Activities should be added to Manifest (!)

Android: Manifest example

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Android: Context

! Interface to global information about an

application environment.

! Every Activity or Service is a Context itself ! Context is required to start an Activity or a Service

Android: Activity

! UI Component

! Only one Activity can be active

! Java Class File

! UI is defined by XML (in most cases) ! Behavior is defined by java

! Managed Component

! It has a lifecycle managed by Android

system

Android: Intent

! Target

! Can be implicit or explicit

! Data

! Simple values (Integer, String, Lists, etc.) ! Complex objects

Android: Start Activity example

! Intent intent = new Intent(GameActivity.this, ResultActivity.class);

! intent.putExtra("score", correctAnswers); ! intent.putExtra("time", totalTime);

! startActivity(resultActivityIntent); ! Intent intent = getIntent(); ! final int score = intent.getIntExtra("score", -1); ! final long timeInMillis = intent.getLongExtra("time", -1);

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