分享一个应用iPhone重力感应器程序源代码

       在iPhone手机应用程序开发中， 应用iPhone重力感应器方面的教程或例子文章几乎没有，英文方面较为完整的也比较少，今天发现了一个应用重力感应做的游戏的完整的教程（Gravity Tutorial for iPhone），值得借鉴和参考。

      总共分为5个部分讲解，下面是各章节的连接地址：

Gravity Tutorial for iPhone Part 1

Gravity Tutorial for iPhone Part 2

Gravity Tutorial for iPhone Part 3

Gravity Tutorial for iPhone part 4

Gravity Tutorial for iPhone, Part 5

 

另外有发现一个设置iPhone的topbar以及获得重力感应(1.1.x)的代码，可以参考下：

1\屏幕上方的status bar 弄掉,

- (void) applicationDidFinishLaunching: (id) unused

{

[UIHardware _setStatusBarHeight:0.0f];

[self setStatusBarMode:2 orientation:0 duration:0.0f fenceID:0];

//[self setStatusBarMode:4 orientation:90 duration:0.5 fenceID:0 animation: 0];有渐变效果

}

 

2\获得当前iPhone的感应方向

enum{kFACEUP = 0,kNORMAL = 1,kUPSIDEDOWN = 2,kLANDL = 3,kLANDR = 4,kFACEDOWN = 6};

- (void)deviceOrientationChanged:(id)event {
    int orient = [ UIHardware deviceOrientation: YES ];

    float animDur = 0.5;
    int animType = 0;

    // handle status bar transition
    switch(orient)
      {
      case kFACEUP:
      case kFACEDOWN:
    // do nothing for flat and face down
    break;

    case kUPSIDEDOWN:
      // Disable when upside down, there doesn't seem to be a
      // inverted status bar
      [self setStatusBarMode:2 orientation:180 duration:animDur fenceID:0 animation: animType];
      break;

    case kNORMAL:
      [self setStatusBarMode:4 orientation:0 duration:animDur fenceID:0 animation: animType];
      break;

    case kLANDL:
      [self setStatusBarMode:4 orientation:90 duration:animDur fenceID:0 animation: animType];
      break;

    case kLANDR:
      [self setStatusBarMode:4 orientation:-90 duration:animDur fenceID:0 animation: animType];

      break;
    }

    // pass orientation event over to top level app view
   // [_screenView deviceOrientationChanged: orient];

    // no events when started from console
    //NSLog(@"orient: %d", orient);

}

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