在我的
Android应用程序中我有全景图像,我根据手机运动使用TYPE_ORIENTATION传感器旋转此图像它适用于景观和potrait.这是旋转逻辑的代码.
@Override
public void onSensorChanged(SensorEvent event) {
switch (event.sensor.getType()) {
case Sensor.TYPE_ORIENTATION:
float[] insideval = getValPoints();
event.values[1]=(float) (event.values[1]*2.8);
event.values[2]=(float) (event.values[2]*2.8);
setValPoints(event.values.clone());
if (insideval != null) {
float check= insideval[0] - event.values[0];
if (-1<=check && check <=1) {
//Animation stoped
this.stopAnimation();
}else{
if (getdefaltDeviceOrientation() == ORENTATION_LANDSCAPE) {
// Natural Orientation is landscape
if (getcurrentDeviceOrientation() == 1) {
//ORIENTATION_PORTRAIT
startPoint = CGPoint.CGPointMake(insideval[2],insideval[1]);
if (insideval[0] < event.values[0]) {
endPoint = CGPoint.CGPointMake(insideval[2]+ event.values[2],insideval[1]);
} else if (insideval[0] > event.values[0]) {
endPoint = CGPoint.CGPointMake(insideval[2]- event.values[2],insideval[1]);
}
} else if (getcurrentDeviceOrientation() == 2) {
//Log.i(TAG,"ORIENTATION_LANDSCAPE");
startPoint = CGPoint.CGPointMake(insideval[1],insideval[2]);
if (insideval[0] < event.values[0]) {
endPoint = CGPoint.CGPointMake(insideval[1]- event.values[1],insideval[2]);
} else if (insideval[0] > event.values[0]) {
endPoint = CGPoint.CGPointMake( insideval[1]+event.values[1],insideval[2]);
}
}
} else if (getdefaltDeviceOrientation() == ORENTATION_PROTRAIT) {
// Natural Orientation is portrait
if (getcurrentDeviceOrientation() == 1) {
//Log.i(TAG,"ORIENTATION_PORTRAIT");
startPoint = CGPoint.CGPointMake(insideval[1],insideval[2]);
if (insideval[0] < event.values[0]) {
endPoint = CGPoint.CGPointMake(insideval[1]+ event.values[1],insideval[2]);
} else if (insideval[0] > event.values[0]) {
endPoint = CGPoint.CGPointMake(insideval[1]- event.values[1],insideval[2]);
}
} else if (getcurrentDeviceOrientation() == 2) {
//Log.i(TAG,"ORIENTATION_LANDSCAPE");
startPoint = CGPoint.CGPointMake(insideval[2],insideval[1]);
if (insideval[0] < event.values[0]) {
endPoint = CGPoint.CGPointMake(insideval[2]- event.values[2],insideval[1]);
} else if (insideval[0] > event.values[0]) {
endPoint = CGPoint.CGPointMake(insideval[2]+event.values[2],insideval[1]);
}
}
}
this.drawView();
}
}
break;
}
}
所以我的问题是如果设备的方向改变颠倒图像将旋转到错误的方向(完全相反的方向).我如何解决这个问题以及当设备方向发生变化时实际发生了什么？
谢谢.
解决方法
使用设备当前旋转
http://developer.android.com/reference/android/view/Display.html#getRotation()
它返回4个选项之一ROTATION_0,ROTATION_90,ROTATION_180,ROTATION_270
