Android sensor; shake and draw

Package com. kane. sensortest;
Import java. util. Random;
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. view. View;
Import android. view. View. OnClickListener;
Import android. widget. Button;
Import android. widget. TextView;


Import android. widget. Toast;


Public class MainActivity extends Activity {
Private TextView content;
Private Button btn;
// Draw lots
Private String [] allResults = {"She loves me", "she does not love me", "she loves him "};

Private Random random = new Random ();

Private boolean flag = false;
Private long startTime =-1;
// X acceleration in the initial horizontal direction
Private float max = 0;
Private float min = 0;
@ Override
Protected void onCreate (Bundle savedInstanceState ){
Super. onCreate (savedInstanceState );
SetContentView (R. layout. activity_main );
Content = (TextView) findViewById (R. id. content );
Btn = (Button) findViewById (R. id. btn );
// Call the sensor Service
SensorManager manager = (SensorManager) getSystemService (SENSOR_SERVICE );
// Create a Sensor Object
Sensor s = manager. getdefasensensor (Sensor. TYPE_ACCELEROMETER); // accelerator object, there are many other objects
// Set the listener. When the value in the sensor changes, the listener automatically sends feedback.
Manager. registerListener (new SensorEventListener (){

@ Override
Public void onSensorChanged (SensorEvent event ){
If (flag ){
If (startTime =-1 ){
StartTime = System. currentTimeMillis ();
}
// This method is automatically executed when there is a change
// You can use event to obtain acceleration values in three directions.
Float [] values = event. values;
/* StringBuilder builder = new StringBuilder ();
Builder. append (values [0] + "\ r \ n ");
Builder. append (values [1] + "\ r \ n ");
Builder. append (values [2] + "\ r \ n ");
Content. setText (builder );*/
If (values [0]> max ){
Max = values [0];
}
If (values [0] Min = values [0];
}
If (max> 10 & min <-10 ){
Flag = false;
Long x = System. currentTimeMillis ();
If (x-startTime & gt; 2000 ){


Toast. makeText (MainActivity. this, "timeout, please shake again ",
Toast. LENGTH_SHORT). show ();
}
Else {
// The result is displayed.

// Randomly generated
Int index = random. nextInt (3 );
Content. setText ("Result:" + allResults [index]);

}
StartTime =-1;

}

}

}

@ Override
Public void onAccuracyChanged (Sensor sensor, int accuracy ){

}
}, S, 0 );

Btn. setOnClickListener (new OnClickListener (){

@ Override
Public void onClick (View v ){
Flag = true;
Content. setText ("please start shaking ");

}
});
}


}