在我的 Android 应用中,我有一个全景图像,并使用 TYPE_ORIENTATION 传感器根据手机的运动旋转该图像。无论是横屏还是竖屏,它都能正常工作。以下是旋转逻辑的代码。
@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;
}
}
我的问题是,如果设备的方向颠倒改变,图像会旋转到错误的方向(完全相反的方向)。我该如何解决这个问题?当设备的方向颠倒时,实际上会发生什么?
谢谢。