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 »
I think everyone has checked my previous post on how to improve Android WebView performance. If not, check it here Improve Android WebView Perfomance Now we will see how we can load a webpage textfields with our custom values in Android WebView. For this I am using a sample HTML file which is stored in… Read More »
Hi all, In Today’s tutorial we will see how we can do a shared element transition between activities in android. What we will do. We have two activities First activity has a TextView and two images. Second activity with two images. We will animation between corresponding images. Check out the video below to see what… Read More »
Material Design has changed the way users interact with the apps. Reveal is a new animation introduced in Android L that animates the view’s clipping boundaries. Reveal animations provide users visual continuity when you show or hide a group of UI elements. This animation is often times used in conjunction with a floating action button.… Read More »
A Quick note on WebView A View that displays web pages. This class is the basis upon which you can roll your own web browser or simply display some online content within your Activity. It uses the WebKit rendering engine to display web pages and includes methods to navigate forward and backward through a history,… Read More »
Below simple code explains how you can do a simple activity transitions in Android
This Activity shows a simple layout animation. Here we add a new Button to the layout with “APPEARING” animation. You can have a variety of Default animations. Activity The layout. All Done. Please send your comments to coderzheaven@gmail.com.
The Canvas can be used to draw graphics in android. It provides methods to draw oval, rectangle, picture, text, line etc. The Paint class is used with canvas to draw objects. It holds the information of color and style. In this example, we will draw some 2D Shapes. We will create class that extends View… Read More »
Here is a simple class to animate a textview just like a Typewriter. Typewriter Usage Please leave your valuable comments @coderzheaven@gmail.com
No matching client found Error usually comes when you are using the FireBase SDK in your project. This is because you are missing the the ‘google-services.json’ file in your project. You may have added it, but in the wrong path. Android Studio will try to search for it in the ‘app’ directory. The Solution is… Read More »
Firebase errors usually comes when you have an outdated SDK. So the simple solution is to update the SDK. Open the SDK manager and check for the “extras” branch. Now check the Google Play Services and Google Repository. Once the update is complete, the firebase errors should be gone.
This is the most common errors that we see in Android Studio and very often it is easy to fix. Just follow these simple steps File -> Invalidate caches / Restart Shutdown Android Studio Rename/remove .gradle folder in the user home directory Restart Android Studio let it download all the Gradle stuff it needs Gradle… Read More »
JobScheduler class is used to schedule Jobs in Android. JobScheduler was added recently in API 21, so below that it will not work. Here is a simple example… Create JobScheduler Service We need to create the JobSchedulerService class at first. AndroidManifest Just like a service, we need to add this service in the AndroidManifest. Create… Read More »
This is a common mistake that people make when coding for marshmallow. When in AppCompatActivity, you should use ActivityCompat.requestPermissions; When in android.support.v4.app.Fragment, you should use simply requestPermissions (this is an instance method of android.support.v4.app.Fragment) If you call ActivityCompat.requestPermissions in a fragment, the onRequestPermissionsResult callback is called on the activity and not the fragment. If you… Read More »
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 versions greater than Android Marshmallow. Watch Video Tutorial 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… 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 MainActivity We have… Read More »