Android uses sensors to achieve micro-wave function _android

This example for you to share the Android micro-wave function of the implementation method for your reference, the specific content as follows

Import java.util.ArrayList;  
Import java.util.List;  
Import Java.util.Random;  
Import android.app.Activity;  
Import Android.app.Service;  
Import android.content.res.Resources;  
Import Android.hardware.Sensor;  
Import android.hardware.SensorEvent;  
Import Android.hardware.SensorEventListener; 
Import Android.hardware.SensorManager;  
Import Android.os.Bundle;  
Import Android.os.Vibrator;  
Import Android.view.View;  
 
Import Android.widget.Button; Need to implement Sensoreventlistener interface public class Loverschoise extends activity implements sensoreventlistener{Butto 
 
    n Clear; 
 
  Define sensor manager private Sensormanager Msensormanager; 
 
     Shaking private vibrator vibrator; 
 
        public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); 
 
       Setcontentview (r.layout.loverschoise); 
 
        Get sensor Management Services Msensormanager = (Sensormanager) getsystemservice (Sensor_service); Vibration Vibrator = (VibraTor) Getsystemservice (Service.vibrator_service); 
 
        Clear = (Button) Findviewbyid (r.id.clear); 
 
         Clear.setonclicklistener (New Button.onclicklistener () {@Override public void OnClick (View arg0) { TODO auto-generated Method Stub//Click button, set text CLEAR.SETTEXT to button ("Now give the button the Te 
 
    XT Assignment ~ "); 
 
}); 
 
 @Override protected void Onresume () {super.onresume (); Acceleration Sensor Msensormanager.registerlistener (This, msensormanager.getdefaultsensor (sensor.type_accelerometer),/ /There are sensor_delay_ui, Sensor_delay_fastest, Sensor_delay_game and so on,//according to different applications, the need for different reaction rates, specific according to the actual situation set Sensormanager.sensor_ 
 
Delay_normal); 
 
 } @Override protected void OnStop () {Msensormanager.unregisterlistener (this); 
 
Super.onstop (); 
 
 } @Override protected void OnPause () {Msensormanager.unregisterlistener (this); 
 
Super.onpause (); @Override public void onaccuracychanged (Sensor Sensor, int accuracy) {//TODO auto-generated Method Stub//when the sensor's precision changes, the callback is to do nothing. @Override public void onsensorchanged (Sensorevent event) {//TODO auto-generated method stub int Sensorty 
 
 PE = Event.sensor.getType (); 
 
 Values[0]:x axis, values[1]:y axis, values[2]:z axis float[] values = event.values; 
 
 if (SensorType = = Sensor.type_accelerometer) {/* * because normally, the maximum value of any axis is between 9.8~10, only when you suddenly shake the phone *, the instantaneous acceleration will suddenly increase or decrease. * So, after the actual test, just listen to any axis of acceleration greater than 14, change the settings you need * OK ~ ~ ~/if ((Math.Abs (values[0)) >14| | Math.Abs (values[1]) >14| | 
 
  Math.Abs (values[2]) >14) {//Shake mobile phone, set button on the display of the word is empty clear.settext (null); 
 
  Shake mobile phone, and then accompanied by vibration hint ~ ~ vibrator.vibrate (500); 
 } 
 
 } 
 
} 
 
}

Now many applications have been used to shake the phone to change the content of the function, such as micro-letter in the "Shake" function. The first two days to implement this function, a little look at the contents of the sensor sensor.

There are several types of sensors:

Direction sensor: Sensor.type_orientation
Acceleration (Gravity) Sensor: Sensor.type_accelerometer
Light sensor: Sensor.type_light
magnetic field Sensor: Sensor.type_magnetic_field
distance (proximity) sensor: Sensor.type_proximity
Temperature sensor: Sensor.type_temperature

In the function of shaking mobile phone, we only use the acceleration sensor on the line ~ ~

The unit of the acceleration sensor return value is the unit m/s^2 of the acceleration (meter every two seconds), and the values in three directions are

　　Values[0]: X-axis direction acceleration
VALUES[1]: Y-axis direction acceleration
VALUES[2]: Z-axis direction acceleration

The definition of X,y,z direction is to position the right leg of the mobile phone as the reference coordinate origin.

　x direction is the mobile phone's horizontal direction, right is positive
The y direction is the horizontal vertical direction of the cell phone, the front is positive
Y direction is the cell phone's vertical direction, the direction of the sky is positive, the direction of the Earth is negative

So, your cell phone is placed in a different space, and it has a different acceleration in three directions. Here, the acceleration in three directions is different from our traditional acceleration (9.8M/S2), which needs to be savored
Above is the code that shakes the phone and clears the TextView text.

The above is the entire content of this article, I hope to help you learn, but also hope that we support the cloud habitat community.