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Android Articles
Page 124 of 125
How to check internet connection in android?
This example demonstrate about how to check the state of internet connection through broadcast Receiver.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − To find the internet status we have to add network state permission to AndroidManifest.xml file as shown below. Step ...
Read MoreHow to create CircularImageView in android?
This example demonstrate about how to Create CircularImageView in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 −To make circler view, we should add CircularImageView library in gradle file as shown below.apply plugin: 'com.android.application' android { compileSdkVersion 28 defaultConfig { applicationId "com.example.andy.myapplication" minSdkVersion 15 targetSdkVersion 28 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release ...
Read MoreHow to pass data between activities with android Serializable
Using serialization, we can pass object's state or array between two activities. Before getting into the code, we should know about serialization and how does it work with intent in android.Serialization is a marker interface. Using serialization, we can convert state of an object into a byte stream. The byte stream is a platform independent, so it's going to work on the JVM and other platforms. Here is the example to send an object between two activities.Step 1 − Create a new project in Android Studio, Go to File ⇒ New Project and fill all required details to create a ...
Read MoreHow to Speed up Gradle build process in Android Studio?
Before getting info speed up gradle build, we should know that, what is gradle build.Before eclipse, we dont have any automation scripts to build java and XML code to android apk. So that we used commands to generate apk. To optimize this process, gradle build come into the picture. Gradle is automated script to build and generate apk using android studio. What is Gradle sync ? Gradle sync is automation process to download dependencies which are declare in gradle file. A simple example as shown below − How to speed Gradle Build in android? Step 1 − Open gradle.properties ...
Read MoreHow to check visibility of virtual keyboard on Android?
There are some situations, we should find keyboard is visible or not in particular activity. In this example we can check visibility of virtual keyboard on android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. Step 3 − Add the following code to src/MainActivity.javaimport android.graphics.Rect; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.constraint.ConstraintLayout; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.View; import android.view.ViewTreeObserver; import android.view.inputmethod.InputMethodManager; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public ...
Read MoreHow can I add items to a spinner in Android?
Spinner is just like a drop down button, using this button we can select a item from set of items. This example demonstrate about how to add items to a spinner in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. Step 3 − Add the following code to src/MainActivity.java.import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.MotionEvent; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.Toast; import java.util.ArrayList; public class MainActivity ...
Read MoreHow many types of intent are in Android?
Before getting into types of intent, we should know what is an intent?. Intent is to perform an action. It is mostly used to start activity, send broadcast receiver, start services and send message between two activities. There are two intents available in android as Implicit Intents and Explicit Intents.Explicit Intent − It going to connect the internal world of an application such as start activity or send data between two activities. To start new activity we have to create Intent object and pass source activity and destination activity as shown below −Intent send = new Intent(MainActivity.this, SecondActivity.class); startActivity(send);And we ...
Read MoreWhat is an Intent in Android?
An intent is to perform an action on the screen. It is mostly used to start activity, send broadcast receiver, start services and send message between two activities. There are two intents available in android as Implicit Intents and Explicit Intents. Here is a sample example to start new activity with old activity.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. (First Activity layout) Step 3 − Create a new ...
Read MoreBackground ListView becomes black when scrolling in Android?
Before getting into listview example, we should know about listview, Listview is a collection of items pulled from arraylist, list or any databases. Most uses of listview is a collection of items in vertical format, we can scroll up/down and click on any item. Here is the simple solution to avoid Background ListView becomes black when scrolling. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main.xml. ...
Read MoreHow to create a custom listview in android?
Before getting into listview example, we should know about listview, Listview is a collection of items pulled from arraylist, list or any databases. Most uses of listview is a collection of items in vertical format, we can scroll up/down and click on any item.What is custom listview?Custom listview works based on customAdapter. In this custom adapter we can pass custom object. We are passing subject data to listview as shown below −Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add ...
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