Weak reference objects, which do not prevent their referents from being made finalizable, finalized, and then reclaimed. Weak references are most often used to implement canonicalizing mappings. Suppose that the garbage collector determines at a certain point in time that an object is weakly reachable. At that time it will atomically clear all weak references… Read More »
Android comes with a built in feature for Speech to Text. This is really helpful when you want to provide navigation in your app through voice commands. When you say something in the app, your voice will be streamed to the server and the server will convert it to text and send back. You can… Read More »
Android uses a centralized logging system. However you can write your own custom log statements. Log Statements To write log statements, you use use the android.util.Log class with the following methods: Log.v() Log.d() Log.i() Log.w() Log.e() Log.wtf() They are sorted by relevance with Log.i() being the least important one. The first parameter of these methods… Read More »
This is simple, just do like this. It would be better if you do this once in the Class that extends the Application Class.
This is a simple trick in Android Studio. First you have to write the skeleton of your function like this Now to generate the comments for this function just type “/**” on top of the function and hit “enter”. You will see the comments generated for you. Now your function will look like this Leave… Read More »
Read about this from my new programming website http://codespower.com/2017/05/25/difference-between-shared-and-portable-app-in-xamarin/
This article shows how you can do simple image scaling in Android. Here I have a simple class that Scales the image. The Utility class Layout The layout which shows the image for scaling. Set the above xml as layout for the Activity. Activity Please leave your comments at the end of the post.
The popup windows is a floating container that appears on top of the current activity. Layout for PopUp Below is the layout for the popup window. Layout for Activity Create another layout for the activity activity_main.xml Implementation The activity which implements the popup.
Hi all, Today I will show you how you can implement Client-Server architecture in an Android environment. Watch Video Demo Below is the demo of the app we are going to build. Watch Video Tutorial I wil be explaining the code in the below video tutorial. If you have any comments,… Read More »
Using Shelvesets in TFS we can set aside pending changes in Visual Studio 2015. We can set aside a batch of pending changes from our current work space temporarily using the feature Shelvesets . We can later restore these changes into our work space or can into work space of another user. Read more from… Read More »
Automated testing processes are now a common thing in every project. Lets see some of them MonkeyRunner You can checkout more from here Advantages Low Level tool Does not have to do coding to automate tests Written in Python It can run test cases on rela devices connected to a PC/Emulators. APIs available for controlling… Read More »
Below is the function which uploads bigger files from Android device to Server.
The android.telephony.TelephonyManager class provides information about the telephony services such as subscriber id, sim serial number, phone network type etc.You can also determine the phone state etc. Permission Before Starting, make sure you add the permission in the Android Manifest. Android Source Code Below code gets the information from the Android Telephony Manager and displays… Read More »
There are two ways to send SMS in Android Using SmsManager Using Built in Intent 1. SmsManager The SmsManager manages SMS operations such as sending data to the given mobile device. You can create this object by calling the static method SmsManager.getDefault() as follows: Initialize Sending Message Once you have SmsManager object, you can use… Read More »
Your application peformance should be upto the mark. But it should perform differently not on the front end , but on the back end when it the device is connected to a power source or charging. Charging could be of from USB and from wire cable. When your device is charging itself , it is… Read More »
Android provides two main API’s for playing sounds. SoundPool MediaPlayer SoundPool SoundPool can be used for small audio clips. It can repeat sounds and play several sounds simultaneously. The sound files played with SoundPool should not exceed 1 MB. SoundPool does load the file asynchronously. As of Android API8 it is possible to check if… Read More »
Using data binding, you can also handle events right from the layout xml using either Method references, or Listener bindings. For this we can create a seperate Class named “MyHandler”. Event Handler Class MyHandler.java Like my previous examples you have to initialize the listener in the Activity. Layout Now the layout that has a button… Read More »
As I shown in the previous post where we used BaseObservable and ObservableField to update UI when binding object is changed, this post will show you another simple way to achieve this. Do Check my previous posts for better understanding of DataBinding and methods used in DataBinding. http://www.coderzheaven.com/2017/01/15/simple-databinding-in-android-example/ http://www.coderzheaven.com/2017/01/20/data-binding-in-android-using-observables/ http://www.coderzheaven.com/2017/01/25/data-binding-in-android-using-observablefield-to-update-ui-automatically/ Here is another way to… Read More »
As I shown in the previous post where we used BaseObservable to update UI when binding object is changed, this post will show you another simple way to achieve this. Do Check my previous posts for better understanding of DataBinding and methods used in DataBinding. http://www.coderzheaven.com/2017/01/15/simple-databinding-in-android-example/ http://www.coderzheaven.com/2017/01/20/data-binding-in-android-using-observables/ Here is another way to do it. In… Read More »
In the last example, you may have got an idea of what DataBinding is. If not please check my tutorial here… Simple DataBinding in Android Example. Updating Objects using Observables. In the last tutorial you may have noticed, if you update the object which is data binded, the change is not reflected in the UI… Read More »
GSON is open source Java library developed by Google. It is an API for converting a Java object to json representation and viceversa. Uses Converts any Java object i.e new object or any existing/legacy object, to JSON and vice-versa. Finest support for generic objects Simple, convenient methods for conversions No need of any annotation for… Read More »
Navigation Drawer helps developers for creating easy menus in an application. Lets start to see how it works. We will start by creating a new project with a navigation drawer activity. Adding Navigation Drawer Activity If you want to add Navigation Drawer Activity to your existing project you can simply add it by going to… Read More »
This is a latest technique in Android where the UI is updated when the data bind to it changes, which is called databinding. DataBinding DataBinding has its own expression language for layout files. It corresponds to Java expressions and has quite impressive capabilities. Below you can see the list of all available operators: mathematical operators;… Read More »
Check the Video below to see what we are going to do… If the web page you plan to load in your WebView use JavaScript, you must enable JavaScript for your WebView. Once JavaScript is enabled, you can also create interfaces between your application code and your JavaScript code. Enabling JavaScript JavaScript is disabled in… Read More »
Material design has changed the way user interact with apps. Below is one such UI design which we all will love. We will create a collapsable AppBar which scrolls from center of the screen to the AppBar. Check out the video below to see how it looks. All the magic happens in the XML layout.… Read More »