[转载]android应用开发全程实录-实现甩动拨打和挂断电话

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
    <TextView  android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="当前状态：就绪"
    android:id="@+id/state"
    android:textColor="#ff0000" />
    <Button android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:id="@+id/call"
    android:text="打电话(10086)"/>    
    <Button android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:id="@+id/stop"
    android:text="挂机"/>  
    </LinearLayout>

public class ShakeSensorActivity extends Activity implements SensorListener {
    private float lastX;
    private float lastY;
    private float lastZ;
    private View mainView;
    private long currTime;
    private long lastTime;
    private long duration;// 持续时间　
    private float currShake;
    private float totalShake;
    private ITelephony iTelephony;
    private boolean isCalling = false;
    SensorManager sm = null;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mainView = LinearLayout.inflate(this, R.layout.main, null);
        setContentView(mainView);
        ((Button) mainView.findViewById(R.id.call)).setOnClickListener(new     
OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        // 打电话
                        callPhoneNumber10086();
                    }
                });
        ((Button) mainView.findViewById(R.id.stop)).setOnClickListener(new OnClick-         Listener() {
                    @Override
                    public void onClick(View v) {
                        // 挂机
                        closePhone();
                    }
                });
        // 获取传感器管理器
        sm = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        // 注册加速度传感器　
        sm.registerListener(this, 
SensorManager.SENSOR_ACCELEROMETER,SensorManager.         SENSOR_DELAY_NORMAL);

    }
    @Override
    public void finish() {
        // TODO Auto-generated method stub
        super.finish();
        sm.unregisterListener(this);// 注销侦听

    }
    @Override
    public void onAccuracyChanged(int sensor, int accuracy) {
        // 精度改变，该方法实质上不做任何操作，它只在每次调用时，添加一个日志项
    }
    @Override
    public void onSensorChanged(int sensor, float[] values) {
        float x = values[0];
        float y = values[1];
        float z = values[2];
        currTime = System.currentTimeMillis();
        if (lastX == 0 && lastY == 0 && lastZ == 0) {
            // 第一次shake
            lastTime = currTime;
        }
        if (currTime - lastTime > 200) {// 200毫秒检测一次
            duration = currTime - lastTime;
            currShake = (Math.abs(x - lastX) + Math.abs(y - lastY) + Math.abs(z    - lastZ))/ duration * 200;
        }
        totalShake = totalShake + currShake;
        if (totalShake > 100) {
            totalShake = 0;// 重置为0，重新累计计数
            lastX = 0;
            lastY = 0;
            lastZ = 0;
            lastTime = 0;
            currTime = 0;
            if (!isCalling) {
                callPhoneNumber10086();
                ((TextView) mainView.findViewById(R.id.state)).setText("当前状态：                通话中...");
            } else {
                closePhone();
                ((TextView) mainView.findViewById(R.id.state)).setText("当前状态：通话结束...");
            }
        }
        lastX = x;
        lastY = y;
        lastZ = z;
        lastTime = currTime;
    }

    /**
     * tell 10086打开通话界面
     */
    private synchronized void callPhoneNumber10086() {
        isCalling = true;
        Intent myIntentDial = new Intent(Intent.ACTION_CALL,Uri.parse("tel:" + 10086));
        startActivity(myIntentDial);
    }

    /**
     * 结束通话
     */
    private synchronized void closePhone() {
        try {
            getTelephony();
            iTelephony.endCall();
            isCalling = false;
        } catch (RemoteException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    /**
     * 初始电话　实例
     */
    public void getTelephony() {

        TelephonyManager telMgr = (TelephonyManager) 
this.getSystemService(Service.         TELEPHONY_SERVICE);
        Class<TelephonyManager> c = TelephonyManager.class;
        Method getITelephonyMethod = null;
        try {
            getITelephonyMethod = c.getDeclaredMethod("getITelephony",(Class[]) null);
            getITelephonyMethod.setAccessible(true);
        } catch (SecurityException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        }

        try {
            iTelephony = (ITelephony) 
getITelephonyMethod.invoke(telMgr,(Object[])null);
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }

    }