Android Sensor Example

                                    Android Sensor Example

Welcome Friend,
            In this example i going to show a list of Sensor on a ListView that are available in device.In last Sensor post i told you how we create sensor base example.

And also explain Proximity sensor :- Proximity sensor sense the object minimum 0 to approx 2.5 cm.
so if any object come nearer to 2.5 cm from sensor it can generate some event.

Code for layout xml file: 

    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

   
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Scan Sensor" />

   
        android:id="@+id/spinner1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

   
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="216dp" >

   

   
        android:id="@+id/imageSwitcher1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="bottom" >

   

package in.androidshivendra.androidsensorexample;

import java.util.List;

import android.hardware.Sensor;

import android.hardware.SensorEvent;

import android.hardware.SensorEventListener;

import android.hardware.SensorManager;

import android.os.Bundle;

import android.app.Activity;

import android.util.Log;

import android.view.Menu;

import android.view.View;

import android.view.ViewGroup.LayoutParams;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.ImageSwitcher;

import android.widget.ImageView;

import android.widget.ViewSwitcher.ViewFactory;

import android.widget.ListView;

import android.widget.Toast;

public class MainActivity extends Activity implements SensorEventListener ,ViewFactory{

Button bscan;

ListView lv;

SensorManager smgr;

List msensor;

ImageSwitcher iv;

Sensor ses;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

try{

setContentView(R.layout.activity_main);

bscan = (Button)findViewById(R.id.button1);

lv = (ListView)findViewById(R.id.listView1);

smgr = (SensorManager)getSystemService(SENSOR_SERVICE);

msensor=smgr.getSensorList(Sensor.TYPE_ALL);

iv = (ImageSwitcher) findViewById(R.id.imageSwitcher1);

iv.setFactory(this);

final ArrayAdapter asens = new ArrayAdapter(MainActivity.this, android.R.layout.simple_list_item_1,msensor);

bscan.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

lv.setAdapter(asens);

}});

lv.setOnItemClickListener(new OnItemClickListener() {

@Override

public void onItemClick(AdapterView parent, View v, int pos,

long id) {

// TODO Auto-generated method stub

Toast.makeText(MainActivity.this, msensor.get(pos).getName(), Toast.LENGTH_SHORT).show();

}

});

}

catch(Exception e)

{

Toast.makeText(MainActivity.this, e.toString(), Toast.LENGTH_LONG).show();

Log.d("Sensor example", e.toString());

}

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

@Override

public void onAccuracyChanged(Sensor sensor, int accuracy) {

// TODO Auto-generated method stub

}

@Override

public void onSensorChanged(SensorEvent event) {

// TODO Auto-generated method stub

if(event.values[0] == 0){

iv.setImageResource(R.drawable.near);

}else{

iv.setImageResource(R.drawable.far);

}

}

protected void onResume() {

super.onResume();

ses = smgr.getDefaultSensor(Sensor.TYPE_PROXIMITY);

smgr.registerListener(this, ses, SensorManager.SENSOR_DELAY_NORMAL);

}

protected void onPause() {

super.onPause();

smgr.unregisterListener(this);

}

@Override

public View makeView() {

// TODO Auto-generated method stub

ImageView iv = new ImageView(this);

iv.setScaleType(ImageView.ScaleType.FIT_CENTER);

iv.setLayoutParams(new ImageSwitcher.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));

return iv;

}

}

Note: This application only Test on Real Device.You can download Application here