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Android Articles
Page 122 of 125
How do I programmatically "restart" an Android app?
There are some situations, we need to restart whole application programmatically. This example demonstrates how do I programmatically “restart” an Android app.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. In the above code, we have taken a text view. When the user clicks on text view, it will restart the whole application.package com.example.andy.myapplication; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.view.View; ...
Read MoreHow to add shadow Effect for a Text in Android?
This example demonstrates how to add shadow Effect for a Text 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. In the above code, we have taken a text view with shadow properties as shown below -android:shadowColor = "#000" android:shadowDx = "-2" android:shadowDy = "-2" android:shadowRadius = "1"In the above tags indicates about shadow color, Axis's(X, Y) and shadow radius for text view.Step 3 − Add the following code to src/MainActivity.javapackage ...
Read MoreHow to determine if running on a rooted device or not in Android?
In some cases, we should not allow application should run on rooted devices for payment gateways. This example demonstrates how to determine if running on a rooted device or not.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. In the above code, we have taken a text view. It contains information about root.Step 3 − Add the following code to src/MainActivity.javapackage com.example.andy.myapplication; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.widget.TextView; ...
Read MoreHow to get Custom circle button in android?
This example demonstrates how to get Custom circle button 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/actiivity_main.xml. In the above code, we have taken the button with a round_button background. so create round_button.xml in drawable folder and add the following code. ...
Read MoreHow to prevent going back to the previous activity in Android?
There are so many situations, where we should not call back action when user click on back button.This example demonstrates how to integrate Android Login and register form.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/actvity_main.xml. Step 3 − Add the following code to src/MainActivity.javapackage com.example.andy.myapplication; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.widget.Toast; public class MainActivity extends AppCompatActivity { int view = R.layout.activity_main; @RequiresApi(api = ...
Read MoreHow to reload activity in Android?
In some situations, we need to recall activity again from onCreate(). This example demonstrates how to reload activity 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. In the above code, We have taken text view, when a user clicks on text view, it will call Main Activity again.Step 3 − Add the following code to src/MainActivity.javapackage com.example.andy.myapplication; import android.content.Intent; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.view.View; import ...
Read MoreHow to remove onClickListener for a view in android?
In some situations, We should not allow onClickListener for a view. This example demonstrates how to remove onClickListener for a view 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/acitivity_main.xml. In the above code, we have taken a text view, In this example, we should remove onClickListner for this text view.Step 3 − Add the following code to src/MainActivity.javapackage com.example.andy.myapplication; import android.content.res.Configuration; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import ...
Read MoreHow to set delay in android?
In some cases, after some time we need to update on UI to solve this problem, In this example demonstrate how to set a delay 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. In the above code, we have taken text view, primary it shows "initial text" after some delay it will update with new text.Step 3 − Add the following code to src/MainActivity.javapackage com.example.andy.myapplication; import android.os.Build; import android.os.Bundle; import android.os.Handler; ...
Read MoreHow can I know when an EditText loses focus in Android?
This example demonstrates how can I know when an EditText loses focus.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. In the above code, we have taken one edit text and two buttons. remove focus button going to remove the focus of edit text and other button going to gain focus of edit text.Step 3 − Add the following code to src/MainActivity.javapackage com.example.andy.myapplication; import android.os.Build; import android.os.Bundle; ...
Read MoreAndroid image scale animation relative to center point?
This example demonstrate about Android image scale animation relative to center point.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. In the above code, we have taken button to show image scaling animation(Zoom animation).Step 3 − Add the following code to src/MainActivity.javapackage com.example.andy.myapplication; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.view.animation.Animation; import android.view.animation.ScaleAnimation; import android.view.animation.TranslateAnimation; import android.widget.Button; import android.widget.ImageView; import android.widget.LinearLayout; public class MainActivity extends AppCompatActivity { ...
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