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Supporting Multiple Screens

Supporting Multiple Screens
Android runs on a variety of devices that offer different screen sizes and densities. For applications, the Android system provides a consistent development environment across devices and handles most of the work to adjust each application's user interface to the screen on which it is displayed. At the same time, the system provides APIs that allow you to control your application's UI for specific screen sizes and densities, in order to optimize your UI design for different screen configurations. For example, you might want a UI for tablets that's different from the UI for handsets. Although the system performs scaling and resizing to make your application work on different screens, you should make the effort to optimize your application for different screen sizes and densities. In doing so, you maximize the user experience for all devices and your users believe that your application was actually designed for their devices—rather than simply stretched to fit the screen on their devices.

Designing For Android Emulator The Android SDK includes a mobile device emulator — a virtual mobile device that runs on your computer. The emulator lets you develop and test Android applications without using a physical device. This document is a reference to the available command line options and the keyboard mapping to device keys. For a complete guide to using the Android Emulator, see Using the Android Emulator. Keyboard Commands Table 1 summarizes the mappings between the emulator keys and the keys of your keyboard. Table 1. Command Line Parameters The emulator supports a variety of options that you can specify when launching the emulator, to control its appearance or behavior. emulator -avd <avd_name> [-<option> [<value>]] ... Table 2. s

Samsung Galaxy Tab Características[editar] Rendimiento[editar] En cuanto hablamos de rendimiento, hay que recordar que este tablet fue el primero en plantar cara y mejorar el iPad de Apple; a diferencia de éste, Samsung opto por mejorar ligeramente las características del Galaxy S para luego implantarlas en un dispositivo de 7", del potente procesador de 1 GHz del Galaxy S, el Galaxy Tab cuenta con uno con la misma arquitectura ARM Cortex y el mismo Soc Hummingbird pero con 1,2 GHz; también hay que hablar de la tarjeta gráfica, aunque ésta apenas haya sido mejorada de los 200 MHz PowerVGR-540 del Galaxy S a los 220 MHz del mismo tipo de procesamiento gráfico del Galaxy Tab Sistema operativo[editar] El sistema operativo original de este dispositivo es Android 2.2.1, actualizado de forma automática a 2.3.5. Muchos usuarios han podido actualizarla mediante Samsung Kies pocos meses después de que se pudiera comprar en tiendas. Samsung Galaxy Tab 2 7.0[editar] Lanzamiento[editar] Europa[editar] Modelos[editar]

<uses-sdk> Google Play Filtering Google Play uses the <uses-sdk> attributes declared in your app manifest to filter your app from devices that do not meet it's platform version requirements. Before setting these attributes, make sure that you understand Google Play filters. syntax: contained in: description: Lets you express an application's compatibility with one or more versions of the Android platform, by means of an API Level integer. Despite its name, this element is used to specify the API Level, not the version number of the SDK (software development kit) or Android platform. Also read the document about Versioning Your Applications. attributes: android:minSdkVersion An integer designating the minimum API Level required for the application to run. Caution: If you do not declare this attribute, the system assumes a default value of "1", which indicates that your application is compatible with all versions of Android. android:targetSdkVersion Introduced in: API Level 4 android:maxSdkVersion API Level 1

Design - Metrics and Grids Devices vary not only in physical size, but also in screen density (DPI). To simplify the way you design for multiple screens, think of each device as falling into a particular size bucket and density bucket: The size buckets are handset (smaller than 600dp) and tablet (larger than or equal 600dp). Optimize your application's UI by designing alternative layouts for some of the different size buckets, and provide alternative bitmap images for different density buckets. Because it's important that you design and implement your layouts for multiple densities, the guidelines below and throught the documentation refer to layout dimensions with dp measurements instead of pixels. Space considerations Devices vary in the amount of density-independent pixels (dp) they can display. To see more, visit the Screen Sizes and Densities Device Dashboard. 48dp Rhythm Touchable UI components are generally laid out along 48dp units. Why 48dp? Mind the gaps Spacing between each UI element is 8dp. Examples

xamarin/monodroid-samples Android UI Design Patterns: Tablet UI Patterns Android Action Bar is a well established UI pattern on Android phone UI design. It is the single most powerful visual tool to make an app look like an Android app. In their tablet version of the Android OS Google decided to support the pattern on API level. In Honeycomb implementing a standard looking Action Bar is easier than ever before. Most important app functionality should always be easily accessible by users. Apps on a single platform should be internally consistent how they approach main level navigation and important actions. Action bar is a branded top bar of the application that provides easy access to relevant actions on the screen and a shortcut to application's home screen. Very easy and fast access to relevant action on current screen.Easy access to application's home screen by clicking the application logo at left. More from this blog Background Process Indicator Problem Many mobile apps either handle or show data that they have to fetch over a network connection. Solution

Hello, Multiscreen Applications In this article we’ll look at how to create multi-screen applications using Xamarin.Android and walk through the creation of a simple multi-screen app. We’ll introduce Intents and show how they can be used to load additional Activities. However, before we dive into creating the application, let’s examine the constituent pieces of an Android application. Android applications are very different from traditional client applications found on platforms such as Windows, Mac OS X and even mobile platforms such as iOS. These platforms have a single entry point into the application in the form of a static main function, which creates an instance of an application that then launches, loads and manages its screens, etc. The following diagram illustrates the components of a basic Android application: This loosely coupled architecture presents an interesting problem for multi-screen applications. Let’s explore Activities and Intents a little more. Activities Context Activity Lifecycle Overview Intents

Hello, Android In this article we’ll look at how to create, deploy, and run a Xamarin.Android application. First, we’ll demonstrate how to use the default application template in the deployment process. Next, we’ll examine some of the basic parts of the android application that are created with the template. To get started, we are going to walk through the steps you need to take to create a Xamarin.Android application. Creating a New Application Let’s begin by creating a new Xamarin.Android solution. Android Library Project – A reusable .NET library project for Android. We’re going to use the Android Application template for this walkthrough. New Solution - Xamarin Studio From the File menu select New > Solution, bringing up the dialog shown below: Expand the C# item in the tree on the left. New Solution – Visual Studio From the File menu select New>Project, bringing up the New Project dialog shown below: Expand Visual C# under Installed Templates. Solution Components Setting Application Icons

Application Fundamentals Android apps are written in the Java programming language. The Android SDK tools compile your code—along with any data and resource files—into an APK: an Android package, which is an archive file with an .apk suffix. One APK file contains all the contents of an Android app and is the file that Android-powered devices use to install the app. Once installed on a device, each Android app lives in its own security sandbox: The Android operating system is a multi-user Linux system in which each app is a different user. By default, the system assigns each app a unique Linux user ID (the ID is used only by the system and is unknown to the app). In this way, the Android system implements the principle of least privilege. However, there are ways for an app to share data with other apps and for an app to access system services: It's possible to arrange for two apps to share the same Linux user ID, in which case they are able to access each other's files. App Components Activities Services <? Activities

Android GUI templates for Keynote and PowerPoint Android Templates V3.0 Create wireframes and high fidelity prototypes for Android apps using Apple Keynote or Microsoft PowerPoint. All elements are designed from scratch in Keynote and PowerPoint (no images!) and are fully customizable and editable without needing additional tools. What’s included High Fidelity Android 4 Phone GUI Components High Fidelity Android 4 Tablet GUI Components High Fidelity Android 3 GUI Components Royalty-Free Android App Icons Works with Keynote (Mac/iPad) & PowerPoint (Mac/PC) Or directly update quantity in cart to get the discount 100% Money Back Guarantee Try Keynotopia ABSOLUTELY RISK FREE. Free Lifetime Updates Keynotopia is updated regularly. Fast And Secure Checkout

Learn Android : Android Layout Tutorial An Android layout is a class that handles arranging the way its children appear on the screen. Anything that is a View (or inherits from View) can be a child of a layout. All of the layouts inherit from ViewGroup (which inherits from View) so you can nest layouts. The standard Layouts are: AbsoluteLayoutFrameLayoutLinearLayoutRelativeLayoutTableLayout In this article we will examine each of these layouts in detail. I have also created a demo project that uses the code samples from this tutorial and from the Lots of Lists: Part 1, Simple List Activity tutorial. Next: AbsoluteLayout anddev.org • Index page SDK Before installing Android Studio or the standalone SDK tools, you must agree to the following terms and conditions. This is the Android Software Development Kit License Agreement 1. Introduction 1.1 The Android Software Development Kit (referred to in this License Agreement as the "SDK" and specifically including the Android system files, packaged APIs, and Google APIs add-ons) is licensed to you subject to the terms of this License Agreement. 2. 2.1 In order to use the SDK, you must first agree to this License Agreement. 3. 3.1 Subject to the terms of this License Agreement, Google grants you a limited, worldwide, royalty-free, non-assignable, non-exclusive, and non-sublicensable license to use the SDK solely to develop applications for compatible implementations of Android. 3.2 You may not use this SDK to develop applications for other platforms (including non-compatible implementations of Android) or to develop another SDK. 4. 5. 6. 7. 8. 9. 12. 13. 14.

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