在我的Android应用我有全景图像和我使用TYPE_ORIENTATION传感器,它正在罚款风景和potrait根据手机旋转运动这一形象。这里是code旋转逻辑。
In my android app i have panorama image and i am rotating this image according to phones motion using TYPE_ORIENTATION sensor it is working fine for both landscape and potrait. Here is the code for rotation logic.
@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倒挂图像旋转到错误的方向(方向刚好相反)。我怎样才能解决这个问题,到底发生了什么,当设备方向更改倒挂?结果谢谢你。
So my problem is if device's orientation changes upside down image will rotate to wrong direction(exactly opposite direction). How can i fix this issue and what actually happens when devices orientation change upside down ? Thanks.
使用该设备当前旋转的http://developer.android.com/reference/android/view/Display.html#getRotation()
它返回的4个选项ROTATION_0,ROTATION_90,ROTATION_180,ROTATION_270有一个
It returns one of 4 options ROTATION_0, ROTATION_90, ROTATION_180, ROTATION_270