摇一摇&重力传感器 Android摇一摇功能示例源码(程序源码).zip

package com.mamezou.android.shake; import android.app.Activity; import android.content.Context; import android.graphics.drawable.BitmapDrawable; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.os.Bundle; import android.view.View; public class ShakeActivity extends Activity implements SensorEventListener { private SensorManager sensorManager; private ValueHolder x; private ValueHolder y; private ValueHolder z; private View layout; // なんちゃってAndroidの画像(Andy君) private BitmapDrawable andy; private static final int ELEMENT_COUNT = 30; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); sensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE); layout = (View) findViewById(R.id.layout); andy = (BitmapDrawable) getResources().getDrawable(R.drawable.andy); } @Override protected void onResume() { super.onResume(); sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_FASTEST); x = new ValueHolder(ELEMENT_COUNT); y = new ValueHolder(ELEMENT_COUNT); z = new ValueHolder(ELEMENT_COUNT); } @Override protected void onStop() { sensorManager.unregisterListener(this); super.onStop(); } public void onAccuracyChanged(Sensor sensor, int accuracy) { } public void onSensorChanged(SensorEvent e) { float sensorValueX = e.values[SensorManager.DATA_X]; float sensorValueY = e.values[SensorManager.DATA_Y]; float sensorValueZ = e.values[SensorManager.DATA_Z]; x.add(sensorValueX); y.add(sensorValueY); z.add(sensorValueZ); float valueX = sensorValueX - x.getMedian(); float valueY = sensorValueX - x.getMedian(); float valueZ = sensorValueX - x.getMedian(); andy.setAlpha(15 * (int)(Math.abs(valueX) + Math.abs(valueY) + Math.abs(valueZ))); layout.setBackgroundDrawable(andy); } }