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Mobile Development Articles
Page 35 of 156
How to resize an image in Android using Picasso?
This example demonstrates how to do I 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 − Open build.gradle (Module: app) and add the following dependency −implementation 'com.squareup.picasso:picasso:2.5.2'Step 3 − Add the following code to res/layout/activity_main.xml. Step 3 − Add the following code to src/MainActivity.javaimport androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.widget.ImageView; import com.squareup.picasso.Picasso; public class MainActivity extends AppCompatActivity { ImageView imageView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ...
Read MoreHow to detect application heap size in android?
This example demonstrates how do I detect application heap size 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 androidx.appcompat.app.AppCompatActivity; import android.app.ActivityManager; import android.os.Bundle; import android.view.View; import android.widget.TextView; import java.util.Objects; public class MainActivity extends AppCompatActivity { TextView textView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = ...
Read MoreHow to detect orientation change in layout in android?
This example demonstrates how do I detect orientation change in layout 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 androidx.appcompat.app.AppCompatActivity; import android.content.res.Configuration; import android.os.Bundle; import android.widget.Toast; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); ...
Read MorePlaying an Arbitrary tone with Android?
This example demonstrates how do I playing an arbitrary tone with 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 androidx.appcompat.app.AppCompatActivity; import android.media.AudioFormat; import android.media.AudioManager; import android.media.AudioTrack; import android.os.Bundle; import android.os.Handler; public class MainActivity extends AppCompatActivity { private final int duration = 10; private final int sampleRate = 8000; private final int numSamples = duration * sampleRate; ...
Read MoreHow to detect scroll up and scroll down in android listView?
This example demonstrates how do I detect scroll up and down in android listView.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 androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.widget.AbsListView; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.ScrollView; import android.widget.Toast; public class MainActivity extends AppCompatActivity { ScrollView scrollView; ListView listView; String[] numbers = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "X", "11", "12", "13", ...
Read MoreHow to set the value for the attribute layout_weight for button in Android dynamically from java code?
This example demonstrates how do I set the value for the attribute layout_weight for button in android dynamically from java code.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 androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.widget.Button; import android.widget.LinearLayout; public class MainActivity extends AppCompatActivity { LinearLayout linearLayout; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); linearLayout ...
Read MoreHow to make an Android SlidingDrawer slide out from the left?
This example demonstrates how do I make an android slidingdrawer slide out from the left 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 androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { ...
Read MoreHow to create focusable editText inside ListView on Android?
This example demonstrates how do I create a focusable editText inside ListView 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 new layout resource file and add the following code− Step 4 − Add the following code to src/MainActivity.javaimport androidx.appcompat.app.AppCompatActivity; import android.annotation.SuppressLint; import android.app.LauncherActivity; import android.content.Context; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.EditText; import ...
Read MoreHow can I get zoom functionality for images on Android?
This example demonstrates how do I get zoom functionality for images 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.import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.MotionEvent; import android.view.ScaleGestureDetector; import android.widget.ImageView; public class MainActivity extends AppCompatActivity { private ScaleGestureDetector scaleGestureDetector; private float scaleFactor = 1f; private ImageView imageView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); imageView = findViewById(R.id.imageView); ...
Read MoreHow to add google search functionality in an android app?
This example demonstrates how do I add google search functionality in an 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 androidx.appcompat.app.AppCompatActivity; import android.app.SearchManager; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; public class MainActivity extends AppCompatActivity { EditText editText; Button btnSearch; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ...
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