Android

Steps Reboot the system by pressing "Power" and "Volume down" simultaneously Boot menu should appear, use "Volume up/down" to select the menu item "Android Recovery", "Power" to confirm System reboots, a screen appears with a message "No command" - this is no error though it looks like one Press "Power" and "Volume up" together and a menu "Android Recovery" appears Use "Volume up/down" to select the menu item "Wipe data/factory reset", "Power" to confirm User data on the device is deleted and the original meu is shown Select the menu item "Reboot system now" and confirm by pressing the "Power" Button The device reboots and you may configure the Android system …​ ...

When it comes to the field of hybrid mobile application development, Ionic and its tool-stack is often an attractive choice. Now there is Ionic Creator to speed up the development process offering an in-browser editor to create user interfaces via drag and drop and supporting basic templates for mobile applications like tabbed layouts etc. In addition, a project created with this tool may be downloaded and started with easy and that’s what I’d like to show in the following short example. ...

Nowadays in the realm of hybrid mobile application development there is a variety of available frameworks worth having a look at. In the following tutorial I’d like to demonstrate the development life-cycle for a complete mobile application using Ionic, Cordova and AngularJS (and others) covering every step from the initial project setup, creating Angular Controllers, Directives, adding Cordova Plug-Ins, running and testing the application in the browser and emulator up to finally running the application on an Android device and assembling files for a release. ...

Daydream is the new interactive screensaver mode that was added in the Android 4.2 / Jelly Beans release. Such “dreams” may be activated when the device is in idle mode or inserted into a dock. In the following tutorial we’re going to create a simple daydream that starts a simple animation and in addition we’ll be adding a configuration screen to alter the behaviour of this daydream. Create a new Android Application First of all we need a new android project. I am using Eclipse and the ADT plugin here but any other solution like using a specific Maven archetype and the Jayway Maven plugin or using SBT should work, too. ...

Since I got a new tablet running Android 4.0 aka ice cream sandwich I wanted to play around a bit with the fragments API and creating an application for a tablet. In the following tutorial, we’re going to build an application that renders several articles from a popular tech blog (just kidding) in a web view. What to build We’re going to build an application that is able to display web links in the left section of the screen and when clicked, displaying the corresponding website content in the right section of the application screen. ...

Using reusable styles and themes to modify an Android application’s look is really easy and helps to not violate thy DRY (don’t repeat yourself) principle by typing styles in every single UI element again and again. In the following tutorial we’re going to write and apply some simple styles and a finally theme to a simple Android application. Prerequisites The following environment is needed to follow this tutorial … Java Development Kit 6 Android SDK An AVM with at least Android 2.2 / API Version 8 I recommend using Eclipse with the ADT Plugin installed ...

In today’s tutorial we’re going to take a look on how to handle periodically scheduled tasks on our Android device by using BroadcastReceivers, Services and the AlarmManager. Prerequisites The following environment is needed to follow this tutorial … Java Development Kit 6 Android SDK An AVM with at least Android 2.2 / API Version 8 I recommend using Eclipse with the ADT Plugin installed The Concept We’re going to create a first broadcast receiver that gets initiated at boot time. This component then should make use of Android’s AlarmManager API and schedule a cyclic task using an explicit intent. ...

In today’s Android tutorial we’re going to take a look at Android’s Widget API and how to make a widget interact with a service using intents. Figure 1. hasCode Android Widget Tutorial Logo We’re going to create a fully functional application that allows us to enable or disable our smartphone’s screen lock settings using a widget that can be placed on our home screen. Finally, I am going to show how to use a smartphone to test and debug our application and connect it to the IDE. ...

Animations add some spice to our Android applications and the offered animation framework makes it easy to create custom animations and tweens. So lets dance around and create some animations ;) .. About There are two ways to create animations – via XML declaration or in a Java class. We’re going to focus on XML declaration – if you’re interested in java based declaration – take a look at the Android JavaDocs and the subclasses of android.view.animation.Animation. ...

Today we’re going to take a look at Google’s App Inventor feature that offers programming-novices a nice possibility to enter the fabulous world of Android App programming without deeper knowledge of the API or complex SDK installations. So lets build some stuff .. Prerequisites Java 6 JDK App Inventors Extras Software A Google App Inventor Beta Account – request one here What we are going to build We are building a simple GUI with a Textbox and a button A click on the button starts an event that queries the acceleration sensor for coordinates If the sensor is active and enabled then the coordinates are displayed in the text box ...