Android「揺れ」コード実装
3925 ワード
コアインタフェースコード:
アプリケーションコード:
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.util.Log;
public class ShakeListener implements SensorEventListener {
String TAG = "ShakeListener";
// ,
private static final int SPEED_SHRESHOLD = 3000;
//
private static final int UPTATE_INTERVAL_TIME = 70;
//
private SensorManager sensorManager;
//
private Sensor sensor;
//
private OnShakeListener onShakeListener;
//
private Context mContext;
//
private float lastX;
private float lastY;
private float lastZ;
//
private long lastUpdateTime;
//
public ShakeListener(Context c) {
//
mContext = c;
start();
}
//
public void start() {
//
sensorManager = (SensorManager) mContext
.getSystemService(Context.SENSOR_SERVICE);
if (sensorManager != null) {
//
sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
}
//
if (sensor != null) {
sensorManager.registerListener(this, sensor,
SensorManager.SENSOR_DELAY_GAME);
}
}
//
public void stop() {
sensorManager.unregisterListener(this);
}
//
public void setOnShakeListener(OnShakeListener listener) {
onShakeListener = listener;
}
//
public void onSensorChanged(SensorEvent event) {
//
long currentUpdateTime = System.currentTimeMillis();
//
long timeInterval = currentUpdateTime - lastUpdateTime;
//
if (timeInterval < UPTATE_INTERVAL_TIME)
return;
// last
lastUpdateTime = currentUpdateTime;
// x,y,z
float x = event.values[0];
float y = event.values[1];
float z = event.values[2];
// x,y,z
float deltaX = x - lastX;
float deltaY = y - lastY;
float deltaZ = z - lastZ;
// last
lastX = x;
lastY = y;
lastZ = z;
double speed = Math.sqrt(deltaX * deltaX + deltaY * deltaY + deltaZ
* deltaZ)
/ timeInterval * 10000;
Log.v(TAG, "===========log===================");
// ,
if (speed >= SPEED_SHRESHOLD) {
onShakeListener.onShake();
}
}
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
//
public interface OnShakeListener {
public void onShake();
}
}
アプリケーションコード:
public class yaoAcitivity extends Activity {
ShakeListener mShakeListener = null;
private TextView tv;
private ImageView iv;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.setContentView(R.layout.main);
tv=(TextView)this.findViewById(R.id.textView1);
iv=(ImageView)this.findViewById(R.id.imageView1);
mShakeListener = new ShakeListener(this);
mShakeListener.setOnShakeListener(new shakeLitener());
}
private class shakeLitener implements OnShakeListener{
@Override
public void onShake() {
// TODO Auto-generated method stub
tv.setText(" !");
iv.setImageResource(R.drawable.attitude_laugh);
mShakeListener.stop();
}
}
}