Android Accelerometer Example
The Java Code(HelloAndroid.java)
package com.example.helloandroid;
import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.TextView;
public class HelloAndroid extends Activity implements SensorEventListener {
private SensorManager sensorManager;
TextView xCoor; // declare X axis object
TextView yCoor; // declare Y axis object
TextView zCoor; // declare Z axis object
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
xCoor=(TextView)findViewById(R.id.xcoor); // create X axis object
yCoor=(TextView)findViewById(R.id.ycoor); // create Y axis object
zCoor=(TextView)findViewById(R.id.zcoor); // create Z axis object
sensorManager=(SensorManager)getSystemService(SENSOR_SERVICE);
// add listener. The listener will be HelloAndroid (this) class
sensorManager.registerListener(this,
sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
SensorManager.SENSOR_DELAY_NORMAL);
/* More sensor speeds (taken from api docs)
SENSOR_DELAY_FASTEST get sensor data as fast as possible
SENSOR_DELAY_GAME rate suitable for games
SENSOR_DELAY_NORMAL rate (default) suitable for screen orientation changes
*/
}
public void onAccuracyChanged(Sensor sensor,int accuracy){
}
public void onSensorChanged(SensorEvent event){
// check sensor type
if(event.sensor.getType()==Sensor.TYPE_ACCELEROMETER){
// assign directions
float x=event.values[0];
float y=event.values[1];
float z=event.values[2];
xCoor.setText("X: "+x);
yCoor.setText("Y: "+y);
zCoor.setText("Z: "+z);
}
}
}
The Layout(main.xml)
Just three text labels, one for each axis.
<?xml version="1.0" encoding="utf-8"?>
<TableLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TableRow>
<TextView
android:id="@+id/xcoor"
android:text="X Coordinate: "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</TableRow>
<TableRow>
<TextView
android:id="@+id/ycoor"
android:text="Y Coordinate: "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</TableRow>
<TableRow>
<TextView
android:id="@+id/zcoor"
android:text="Z Coordinate: "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</TableRow>
</TableLayout>
The Manifest(AndroidManifest.xml)
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.helloandroid"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="13" />
<uses-permission android:name="android.permission.INTERNET" />
<application android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="true">
<activity android:name=".HelloAndroid"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
The Java Code(HelloAndroid.java)
package com.example.helloandroid;
import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.TextView;
public class HelloAndroid extends Activity implements SensorEventListener {
private SensorManager sensorManager;
TextView xCoor; // declare X axis object
TextView yCoor; // declare Y axis object
TextView zCoor; // declare Z axis object
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
xCoor=(TextView)findViewById(R.id.xcoor); // create X axis object
yCoor=(TextView)findViewById(R.id.ycoor); // create Y axis object
zCoor=(TextView)findViewById(R.id.zcoor); // create Z axis object
sensorManager=(SensorManager)getSystemService(SENSOR_SERVICE);
// add listener. The listener will be HelloAndroid (this) class
sensorManager.registerListener(this,
sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
SensorManager.SENSOR_DELAY_NORMAL);
/* More sensor speeds (taken from api docs)
SENSOR_DELAY_FASTEST get sensor data as fast as possible
SENSOR_DELAY_GAME rate suitable for games
SENSOR_DELAY_NORMAL rate (default) suitable for screen orientation changes
*/
}
public void onAccuracyChanged(Sensor sensor,int accuracy){
}
public void onSensorChanged(SensorEvent event){
// check sensor type
if(event.sensor.getType()==Sensor.TYPE_ACCELEROMETER){
// assign directions
float x=event.values[0];
float y=event.values[1];
float z=event.values[2];
xCoor.setText("X: "+x);
yCoor.setText("Y: "+y);
zCoor.setText("Z: "+z);
}
}
}
The Layout(main.xml)
Just three text labels, one for each axis.
<?xml version="1.0" encoding="utf-8"?>
<TableLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TableRow>
<TextView
android:id="@+id/xcoor"
android:text="X Coordinate: "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</TableRow>
<TableRow>
<TextView
android:id="@+id/ycoor"
android:text="Y Coordinate: "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</TableRow>
<TableRow>
<TextView
android:id="@+id/zcoor"
android:text="Z Coordinate: "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</TableRow>
</TableLayout>
The Manifest(AndroidManifest.xml)
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.helloandroid"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="13" />
<uses-permission android:name="android.permission.INTERNET" />
<application android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="true">
<activity android:name=".HelloAndroid"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
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