android basic daydreams

Basic android control learning ----- Date Time, android ----- date Date Time: TextClock (Text clock), AnalogClock (analog clock), Chronometer (timer), DatePicker (date selector), TimePicker (Time selector), and CalendarView (date view) the first three of these six are rarely used. If we need to customize the last three controls in actual applications, we do not

. Compress the photos to the specified directory 4. Use Asynctask to perform compression operations 5. Display compressed photos and related information to the foreground activity Because this version uses the Asynctask asynchronous task to execute the compress, and Asynctask due to the Android version of the split problem some versions are multi-threaded, some versions are single-threaded, is also drunk, in short this version for a single compress

Tabhost Layout file Let's take a look at the basic content of the layout file:1. Root Label and ID To set up Android with the Id:xml layout file, you can use the label settings where the ID needs to refer to Android's own ID: android:id= @android: id/tabhost; GetHost () Gets the premise: After the ID is set, the GetHost () can be used in the activ

Android basic getting started -- 2.4.12 basic use of ExpandableListView (foldable List)This section introduces: The Adapter controls described in this section are ExpandableListView, which is a foldable list and a subclass of ListView,Based on ListView, it divides the list items in the application into several groups. Each group can contain multiple list items.

Android learning notes (1): basic concepts, android learning notes This article is referenced in Android development tutorials Notes Android concept: Android is a software dedicated to mobile devices. It includes an operating sy

Basic usage of dialogfragment1. Create Dialogfragment public class Dialoga extends Dialogfragment implements Dialoginterface.onclicklistener { @Override public Dialog Oncreatedialog (Bundle savedinstancestate) { Alertdialog.builder Builder = new Alertdialog.builder ( Getactivity ()); Builder.setmessage (R.string.dialoga_title) . Setpositivebutton (R.string.ok, this) . Setnegativebutton ( R.string.cancel, this); return Builder

Android provides a large number of UI controls, and this article describes how to use TextView, ImageView, Button, EditView, ProgressBar, SeekBar, ScrollView, WebView. Before introducing the various controls, let's briefly introduce the most basic properties of the Android UI control: Id:id is a unique identifier for a control that can be manipulated by **findvi

Preface Rxjava and Rxandroid (https://github.com/ReactiveX/RxAndroid) have been burning for a while, and here is a brief introduction to them. Rxjava's self-introduction on the GitHub homepage is "A library for composing asynchronous and event-based the using programs observable for th e java VM (a library that uses an observable sequence on a Java VM to compose an asynchronous, event-based program). In fact, it has become a responsive Third-party library designed for

Basic tutorial for Android-attribute animation of Android animation collection-first sightBasic tutorial for Android-attribute animation of Android animation collection-first sight Tags (separated by spaces): basic

I. OverviewSQLite is one of the core data storage services of Android system, it is a lightweight embedded database, it occupies very little resources but can provide very fast data access service, many large-scale Android projects that need data storage are useful to SQLite (also can be used for desktop applications).The following describes the creation of SQLite database, table operations, as well as

On the Android XUTILS3 framework using the method (a) article, mainly introduced the XUTIL3 annotation module, network module, picture loading module, today to bring you a database module explanation, now the mainstream ORM framework, such as Ormlite,greendao, Active Android,realm and so on, each of these frameworks has its own advantages and disadvantages, you can completely according to the actual needs o

Android Basic Beginner Tutorial--1.2.1 using Eclipse + ADT + SDK to develop Android APPtags (space delimited): Android Basics Beginner Tutorial1. Preface Here we have two paths to choose, directly using the encapsulated ADT Bundle for developing Android, or configur

Basic tutorial for Android-1.2.1 use Eclipse + ADT + SDK to develop Android apps and androidadtAndroid basics tutorial -- 1.2.1 use Eclipse + ADT + SDK to develop Android apps Tags (separated by spaces): basic Android tutorial1. P

As we all know, "Hello, World" is the first line of code written by programmers involved in software development, and it also marks the beginning of the development industry in related fields. This blog is also customary, from the most basic Android version of "Hello, World" start, create their own first Android project, write down their first line of

Basic tutorial for Android -- 2.4.9 basic usage of the GridView (grid view)1. related attributes: The following are some properties in the GridView: Android: columnWidth: Set the column width Android: gravity: Component Method Androi