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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to work with Camera in an Android App?
This example demonstrates how to work with Camera in 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. Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.graphics.Bitmap; import android.view.Menu; import android.view.View; import android.widget.Button; import android.widget.ImageView; public class MainActivity extends AppCompatActivity { private static final int CAMERA_REQUEST=1888; ImageView imageView; @Override ...
Read MoreHow to set background drawable programmatically in android?
This example demonstrates how do I set background drawable programmatically 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.javaimport android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.RelativeLayout; public class MainActivity extends AppCompatActivity { Button button; RelativeLayout relativeLayout; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); relativeLayout = findViewById(R.id.rl); ...
Read MoreHow to change the spinner textSize and textColor in Android app?
This example demonstrates how do I change the spinner textSize and textColor 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.javaimport android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.ArrayAdapter; import android.widget.Spinner; public class MainActivity extends AppCompatActivity { Spinner spinner; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); spinner = findViewById(R.id.spinner); String[] superHero = ...
Read MoreHow to read a file from assets on android?
This example demonstrates how do I read a file from assets 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 – Right click app >> New >> Folder >> Assets folder. Right click on the assets folder, select New >> file (myText.txt) and your text.“Darkness cannot drive out darkness: only light can do that. Hate cannot drive out hate: only love can do that.”Step 4 − Add the following ...
Read MoreHow to set locale programmatically in android app?
This example demonstrates how do I set locale programmatically 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 – Create a directory (values-es) and copy the string.xml file into this directory and make the below changes Sample Que tengas un buen día Step 4 − Add the following code to src/MainActivity.javaimport android.content.res.Configuration; import android.content.res.Resources; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.DisplayMetrics; import java.util.Locale; public class MainActivity extends AppCompatActivity { @Override ...
Read MoreHow to get the height and width of the android.widget.ImageView?
This example demonstrates how do I get the height and width of the android.widget.ImageView 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.javaimport android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView textView; Button button; ImageView imageView; @Override protected void onCreate(Bundle savedInstanceState) { ...
Read MoreHow to change android overflow menu icon programmatically?
This example demonstrates how do I change android overflow menu icon programmatically.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.Color; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.support.v7.widget.Toolbar; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.widget.Toast; public class MainActivity extends AppCompatActivity { Toolbar toolbar; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); toolbar ...
Read MoreHow to pass drawable between activities in android?
This example demonstrates how do I pass drawable between activities 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.javaimport android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; public class MainActivity extends AppCompatActivity { Button button; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { ...
Read MoreHow to add a line break in an android textView?
This example demonstrates how do I add a line break in an android textView.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.Color; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView textView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = findViewById(R.id.textView); textView.setTextColor(Color.RED); } ...
Read MoreWhat is Context on Android?
Definitionit's the context of current state of the application/object. It lets newly-created objects understand what has been going on. Typically, you call it to get information regarding another part of your program (activity and package/application). In the below program you will see that we have created a textView dynamically and passed context. This context is used to get the information about the environment.This example demonstrates how do I display context in an android textView.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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