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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to Create a Tab Layout in Android App?
This example demonstrates how do I create a Tab Layout in 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 dependency to create a tab layout −implementation 'com.android.support:design:28.0.0'Step 3 − Add the following code to res/layout/activity_main.xml. Step 4 − Add the following code to src/MainActivity.javaimport android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.support.design.widget.TabLayout; import android.support.v4.view.ViewPager; public class MainActivity extends AppCompatActivity { TabLayout tabLayout; ViewPager viewPager; @Override protected void onCreate(Bundle ...
Read MoreHow to centre align action bar title in android?
This example demonstrates how do I centre align action bar title 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.app.ActionBar; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM); getSupportActionBar().setCustomView(R.layout.activity_main); } }Step 4 − Add the ...
Read MoreHow to create a custom alert dialogs in an android app?
This example demonstrates how do I make a specific text on TextView bold 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 layout resourse file and add the following code in customdialog.xml Step 3 − Add the following code to src/MainActivity.javaimport android.app.Dialog; import android.content.Context; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.Toast; public class MainActivity ...
Read MoreHow to use checkbox in Android?
This example demonstrates how do I make a specific text on TextView bold 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.CheckBox; import android.widget.Toast; public class MainActivity extends AppCompatActivity { CheckBox pizza, coffee, burger; Button buttonOrder; @Override protected void onCreate(Bundle savedInstanceState) { ...
Read MoreHow to use ButterKnife In Android?
This example demonstrates how do I ButterKnife 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 – Open build.gradle(Module App) and add the following dependencyimplementation 'com.jakewharton:butterknife:8.8.1' annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'Step 4 − 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.TextView; import butterknife.BindView; import butterknife.ButterKnife; public class MainActivity extends AppCompatActivity { @BindView(R.id.textView) TextView textView; @BindView(R.id.textView2) ...
Read MoreHow to use drag and drop in Android?
This example demonstrates how do I use drag and drop 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.DragEvent; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; public class MainActivity extends AppCompatActivity implements View.OnTouchListener, View.OnDragListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ...
Read MoreHow to convert java bitmap to byte array In android?
This example demonstrates how do I convert java bitmap to byte array 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.graphics.Bitmap; import android.graphics.BitmapFactory; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; public class MainActivity extends AppCompatActivity { Button button; ImageView ivSource, ivCompressed; @Override protected ...
Read MoreCommunication between Activity and Service in Android?
This example demonstrates how do I communicate between Activity and Service 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.os.Bundle; import android.view.View; import android.widget.Button; import android.support.v7.app.AppCompatActivity; public class MainActivity extends AppCompatActivity implements View.OnClickListener { Button buttonStart, buttonStop; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ...
Read MoreHow to ping external IP from java Android?
This example demonstrates how do I ping external IP from java 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.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.Toast; import java.io.IOException; public class MainActivity extends AppCompatActivity { Boolean isConnected = false, isWiFi = false, isMobile = false; @Override protected void onCreate(Bundle savedInstanceState) { ...
Read MoreHow to check the amount of RAM to be used by an Android App?
This example demonstrates how do I check the amount of RAM to be used by 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.javaimport android.app.ActivityManager; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.TextView; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final TextView textView = findViewById(R.id.text); ...
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