Android Studio

Proximity Sensor < uses-feature android :name= "android.hardware.sesor.proximity" android :required= "true" /> public class MainActivity extends AppCompatActivity { private SensorManager sensorManager ; private Sensor proximitySensor ; private SensorEventListener proximitySensorListener ; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout. activity_main ); sensorManager = (SensorManager) getSystemService( SENSOR_SERVICE ); proximitySensor = sensorManager .getDefaultSensor(Sensor. TYPE_PROXIMITY ); if ( proximitySensor == null ) { Toast. makeText ( this , "Proximity sensor is not available !" , Toast. LENGTH_LONG ).show(); finish(); } proximitySensorListener = new SensorEventListener() { @Override public void onSensorChanged(SensorEvent sensor...

Colour changing using accelerometer sensor(x,y,z) public class MainActivity extends AppCompatActivity implements SensorEventListener { private TextView xText , yText , zText ; private SensorManager sensorManager ; private Sensor mySensor ; private boolean color = false ; private View view ; private long lastUpdate ; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout. activity_main ); sensorManager = (SensorManager) getSystemService( SENSOR_SERVICE ); mySensor = sensorManager .getDefaultSensor(Sensor. TYPE_ACCELEROMETER ); sensorManager .registerListener( this , mySensor ,SensorManager. SENSOR_DELAY_NORMAL ); xText = (TextView) findViewById(R.id. textViewX ); yText = (TextView) findViewById(R.id. textViewY ); zText = (TextView) findViewById(R.id. textViewZ ); view = findViewById(R.id. change ); vi...

Model DBHelper package com.example.prabuddhaabisheka.mock; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; import java.util.ArrayList; public class DBHelper extends SQLiteOpenHelper { private final static String DATABASE_NAME = "UserInfo.db" ; public DBHelper(Context context) { super (context, DATABASE_NAME , null , 1 ); } @Override public void onCreate(SQLiteDatabase sqLiteDatabase) { String CREATE_TABLE = "CREATE TABLE " + UserProfile.Users. TABLE_NAME + " (" + UserProfile.Users. _ID + " INTEGER PRIMARY KEY," + UserProfile.Users. COLUMN_USERNAME + " TEXT," + UserProfile.Users. COLUMN_DOB + " TEXT," + UserProfile.Users. CO...

Camera < uses-feature android :name= "android.hardware.camera2" android :required= "true" /> public class MainActivity extends AppCompatActivity { private static final int CAMERA_REQUEST = 1888 ; ImageView imageView ; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout. activity_main ); imageView = (ImageView) this .findViewById(R.id. imageView ); Button photbutton= (Button) this .findViewById(R.id. button ); photbutton.setOnClickListener( new View.OnClickListener() { @Override public void onClick(View v) { Intent cameraIntent = new Intent(MediaStore. ACTION_IMAGE_CAPTURE ); startActivityForResult(cameraIntent, CAMERA_REQUEST ); } }); } protected void onActivityResult ( int requestCode, int resultCode, Intent data) { super .o...

Calculator App Main Activity public class MainActivity extends AppCompatActivity { public static final String EXTRA_MESSAGE1 = "extra_key1" ; public static final String EXTRA_MESSAGE2 = "extra_key2" ; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout. activity_main ); Button button; } public void oKButton(View view){ Intent intent= new Intent( this ,SecondActivity. class ); EditText editText1=(EditText)findViewById(R.id. editText ); EditText editText2=(EditText)findViewById(R.id. editText2 ); String message1=editText1.getText().toString(); String message2=editText2.getText().toString(); intent.putExtra( EXTRA_MESSAGE1 ,message1); intent.putExtra( EXTRA_MESSAGE2 ,message2); startActivity(intent); } } Second Activity public class SecondActivity extends AppCompatActiv...

Step Counter Sensor public class MainActivity extends AppCompatActivity implements SensorEventListener { private TextView textView ; private SensorManager sensorManager ; private Sensor stepCounterSensor ; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout. activity_main ); textView = findViewById(R.id. sensor1 ); sensorManager = (SensorManager) getSystemService( SENSOR_SERVICE ); stepCounterSensor = sensorManager .getDefaultSensor(Sensor. TYPE_STEP_DETECTOR ); sensorManager .registerListener( this , stepCounterSensor ,SensorManager. SENSOR_DELAY_NORMAL ); } @Override protected void onPause(){ super .onPause(); sensorManager .unregisterListener( this ); } private long steps = 0 ; @Override public void onSensorChanged(SensorEvent event) { float [] values = event. values ; S...