In this article I will be making a SeekBar as shown in the below screenshot. CustomSeekBar Class We will create a custom class for creating the custom Seekbar. I named it “CustomSeekBar.java” Usage Here is the layout. This is how you use it in your Activity. You are adding the CustomSeekbar to a LinearLayout. So… Read More »
Below example asks for camera permission in an Android Marshmallow Device. Add Camera permission to the manifest For asking for permission you can call like this. To Check if the user has permission to access camera. Now the Callback if the User has performed any action. if the user clicks “Never ask again” then check… Read More »
Here is a simple example implementing ListView with timer in each row. Model Class for row We have a simple model class for each row in the ListView. Item.java Layout for the Listview row Now we have the cell.xml which is the layout for each row. Layout for the Activity activity_main.xml GridAdapter Here goes our… Read More »
SonarQube, formerly known as Sonar, is a platform to analyze code quality. Installing SonarQube Go to http://www.sonarqube.org/downloads/ and download the latest release. Unzip the archive to the directory of your choice. Starting SonarQube Go to your downloaded SonarQube. Open bin/[folder corresponding to your OS] Open up a terminal window and navigate to bin/[folder corresponding to… Read More »
We do SQLite operations in Android by extending the SQLiteOpenHelper Class. I will create an Employee table with three fields id name company. I have a model class same as the database table Employee. Employee.java Lets see How we can do the CRUD (Create, Read, Update and Delete) Operations. CREATE We create a class that… Read More »
What is Geofencing? Geo-fencing is a feature in a software program that uses the global positioning system (GPS) or radio frequency identification (RFID) to define geographical boundaries. A geofence is a virtual barrier. Today we will discuss how we can implement Geofencing in Android with a single location. First You need to provide the permissions… Read More »
CPUs with multiple cores have almost become the standard in Android devices. This means multiple operations doesn’t have to wait to be executed on a single thread. They can rather run on multiple threads in parallel where each threads gets executed on a single processor. For example imagine an operation where multiple images have to… Read More »
Implementing Google Analytics can help you find out how users are using your app. Which page is being visited regularly.You can also Know about the crashes happening in your app. How many users are currently using your app in real time and which page is currently being used more. Lets see how we can implement… Read More »
Introduced in Android 3.0, loaders make it easy to asynchronously load data in an activity or fragment. Loaders have these characteristics: They are available to every Activity and Fragment. They provide asynchronous loading of data. They monitor the source of their data and deliver new results when the content changes. They automatically reconnect to the… Read More »
Introduced in Android 3.0, loaders make it easy to asynchronously load data in an activity or fragment. Loaders have these characteristics: They are available to every Activity and Fragment. They provide asynchronous loading of data. They monitor the source of their data and deliver new results when the content changes. They automatically reconnect to the… Read More »
This demo will show you how you can filter a RecyclerView with your Custom Objects. If you are new to RecyclerView, then please go through this post to get a glance. Check out the Demo Video ( 7 seconds) Here I am using a CustomClass called “ListItem” which has three members. ListItem.java MainActivity.java We have… Read More »
Volley, be default doesn’t support GSON. But it gives the flexibility to do anything. Lets see how we can do this. You can read about Complete Volley Demo in Android from here.. I am going to create a new class for the GSON. Below is my class for the GSON. MyGson.java Now create a class… Read More »
Volley is an HTTP library that makes networking for Android apps easier and most importantly, faster. Volley is available through the open AOSP repository. Volley offers the following benefits: Automatic scheduling of network requests. Multiple concurrent network connections. Transparent disk and memory response caching with standard HTTP cache coherence. Support for request prioritization. Cancellation request… Read More »
You can read the First Article about Best Coding Practices in Android here. Re-Use Elements and Layouts Use for reusing layouts. You can read about this from here. Use Different resources for different density Screens. Properly organize your images in mdpi, hdpi,xhdpi etc folders for corresponding screens. This helps to prevent blurry images. Read more… Read More »
Following conventions. Do not try to create a new convention for coding. Follow the standard convention. Like Class Naming. File Naming. Variable Naming. Code commenting. Code intending. Performing Background Jobs Use Asynctasks and Services for long running Tasks. While normal services run in main thread as the application, it should be used to run very… Read More »
The RecyclerView widget is a more advanced and flexible version of ListView. This widget is a container for displaying large data sets that can be scrolled very efficiently by maintaining a limited number of views. Use the RecyclerView widget when you have data collections whose elements change at runtime based on user action or network… Read More »
Ripple Drawables. Touch feedback in material design provides an instantaneous visual confirmation at the point of contact when users interact with UI elements. The default touch feedback animations for buttons use the new RippleDrawable class, which transitions between different states with a ripple effect. We can either apply RippleDrawable in XML or using Drawable XML… Read More »
In this Demo we will see Check compatibility of the device. Turn On/Off Bluetooth, Making it discoverable List Paired Devies. Check for Online Bluetooth Devices. Connect with a Device. Communicate between Connected Bluetooth Devices. Disconnect from Device. You can download the complete Android Studio Source code at the end of the post. Before We start… Read More »
Here is a simple example for Streaming video in Android… Below is my layout that contains a VideoView and ProgressBar. Don’t forget to add internet permission in the Android Manifest. MainActivity Done.
LocalBroadcastManager is Helper to register for and send broadcasts of Intents to local objects within your process. This is has a number of advantages over sending global broadcasts with sendBroadcast(Intent): You know that the data you are broadcasting won’t leave your app, so don’t need to worry about leaking private data. It is not possible… Read More »
This demo shows How to use Swipe to Refresh in ListViews and ListViewFragments. You can download the complete Android Studio Source Code at the end of the Post. 1. Using ListFragment 2. Using SwipeRefreshListFragment You can download the complete Android Studio Source Code from here. You can send your valuable comments @coderzheaven@gmail.com.
Snackbar is a UI element used for user feedback, just like a Toast except they provide action to interact with. Snackbar will be displayed at the bottom of the screen and can be swiped off in order to dismiss them. Floating Button sits on the top of your layout and provides a way for a… Read More »
This demo will show how to 1. Create and add a new Notification, 2. How many notifications are active in the current Application? 3. Delegate method for Notification Deletion. For Adding a Notification we can use the following snippet. For reading the number of currently Active notifications we can use To know when a Notification… Read More »
Hi all, In today’s tutorial I will show you how to send an image to server using POST method in ANDROID. If you are working in Android studio, then checkout the article here. Uploading an image to server is a basic requirement in many of our application. Sending data to server which is using a… Read More »
Hi all, In this Demo I will show How to implement Apple ‘s MapKit on iOS. This demo will show following this. 1. Show Annotation in Maps. 2. Show Custom Annotation in Maps. 3. Show Custom Annotation with Custom Button in Maps. 4. Pin Point to location from Search. 5. Showing Route/Direction between two location… Read More »