Nhập môn ứng dụng di động Chương 4

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Chương 4 : Flag Quiz App

Nhóm : 2918


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Introduction

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Introduction

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Introduction

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Introduction

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Introduction

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Introduction

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Introduction

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Technologies Overview

Menus
Fragments
Preferences
Assets Folder and Resource Folders
Screen Sizes, Resolutions and Device Orientation
Toasts
Handler

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Technologies Overview

Animation
ViewAnimationUtils
Color state list
AlertDialog
Logging Exception Messages
Launching Another Activiy Via an Explicit Intent
AndroidManifest.xml

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Menus

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Fragments

A Fragment represents a behavior or a portion of user interface in an Activity. You can combine multiple fragments in a single activity to build
a multi-pane UI and reuse a fragment in multiple activities. You can think of a fragment as a modular section of an activity, which has its own
lifecycle, receives its own input events, and which you can add or remove while the activity is running (sort of like a "sub activity" that you can
reuse in different activities).

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Fragments – Lifecycles

onCreate—This method is called when a Fragment is created. The MainActivityFragment and SettingsActivityFragment are created when the app
inflates their parent activities’ layouts. The DialogFragment that displays the quiz results is created and displayed dynamically when the user
completes a quiz.
onCreateView—This method (which you’ll override in class MainActivityFragment) is called after onCreate to build and return a View containing the
Fragment’s GUI. As you’ll see, this method receives a LayoutInflater, which you’ll use to programmatically inflate a Fragment’s GUI from the
components specified in a predefined XML layout.

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Managing Fragments

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preferrences

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Assets Folder

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RESoURCE Folder

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Screen Sizes, Resolutions

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Device Orientation

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Toasts

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handler

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animation

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ViewAnimationUtils

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Color state list

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