Android.mk申请权限

<uses-permission android:name="android.permission.SENSOR_INFO" />  
<uses-permission android:name="android.permission.SENSOR_ENABLE" />
<activity android:screenOrientation="landscape" ></activity>

android:screenOrientation

标题
landscape	横向
portrait	纵向
sensor	根据物理传感器确定方向
sensorLandscape	横向方向，但根据设备传感器，可以是正常或反向的横向方向。API 9 中的新增配置。

传感器类型

传感器	作用
TYPE_ACCELEROMETER	加速度传感器
TYPE_MAGNETIC_FIELD	磁场传感器

横竖屏切换

在游戏的主activity中编写一个静态方法（继承Cocos2dxActivity）

public static void changedActivityOrientation(int orientation){  
//activity.getRequestedOrientation()
   switch(orientation)  
   {  
       case 1://横屏  
           instance.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); 
       break;  
       case 2://竖屏  
          instance.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);  
       break;  
   }  
}

• Cocos2dxAccelerometer.java

 public Cocos2dxAccelerometer(final Context context) {
    this.mContext = context;

    // 获取传感器
    this.mSensorManager = (SensorManager) this.mContext.getSystemService(Context.SENSOR_SERVICE);
    this.mAccelerometer = this.mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
    this.mCompass = this.mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);

    final Display display = ((WindowManager) this.mContext.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
    this.mNaturalOrientation = display.getOrientation();
}


public void enableCompass() {
    this.mSensorManager.registerListener(this, this.mCompass, SensorManager.SENSOR_DELAY_GAME);
}
 @Override
public void onSensorChanged(final SensorEvent sensorEvent) {
    // 参数重载，调到jin绑定的c++层
    Cocos2dxGLSurfaceView.queueAccelerometer(x,y,z,sensorEvent.timestamp);
 }

public static native void onSensorChanged(final float x, final float y, final float z, final long timestamp);

• Cocos2dxHelper.java

public static void enableAccelerometer() {
    Cocos2dxHelper.sAccelerometerEnabled = true;
    Cocos2dxHelper.sCocos2dxAccelerometer.enableAccel();
}

public static void enableCompass() {
    Cocos2dxHelper.sCompassEnabled = true;
    Cocos2dxHelper.sCocos2dxAccelerometer.enableCompass();
}

• CCDevice-Android.cpp

// 启用传感器
void Device::setAccelerometerEnabled(bool isEnabled)
{
    if (isEnabled)
    {
        JniHelper::callStaticVoidMethod(helperClassName, "enableAccelerometer");
    }
    else
    {
        JniHelper::callStaticVoidMethod(helperClassName, "disableAccelerometer");
    }
}

• Java_org_cocos2dx_lib_Cocos2dxAccelerometer.cpp

extern "C" {
    JNIEXPORT void JNICALL Java_org_cocos2dx_lib_Cocos2dxAccelerometer_onSensorChanged(JNIEnv*  env, jobject thiz, jfloat x, jfloat y, jfloat z, jlong timeStamp) {
        Acceleration a;
        a.x = -((double)x / TG3_GRAVITY_EARTH);
        a.y = -((double)y / TG3_GRAVITY_EARTH);
        a.z = -((double)z / TG3_GRAVITY_EARTH);
        a.timestamp = (double)timeStamp / 1e9;

        EventAcceleration event(a);
        Director::getInstance()->getEventDispatcher()->dispatchEvent(&event);
    }    
}