android如何改變預設橫豎屏方向
如何改變android預設的橫豎屏，修改原始碼一個地方就可以了。
public int rotationForOrientationLw(int orientation, int lastRotation,
boolean displayEnabled) {
if (mPortraitRotation < 0) {
// Initialize the rotation angles for each orientation once.
Display d = ((WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay();
if (d.getWidth() > d.getHeight()) {
mPortraitRotation = Surface.ROTATION_90;
mLandscapeRotation = Surface.ROTATION_0;
mUpsideDownRotation = Surface.ROTATION_270;
mSeascapeRotation = Surface.ROTATION_180;
} else {
mPortraitRotation = Surface.ROTATION_0;
mLandscapeRotation = Surface.ROTATION_90;
mUpsideDownRotation = Surface.ROTATION_180;
mSeascapeRotation = Surface.ROTATION_270;
}
}
{
Log.i(TAG, "MediaPlayer.is not PlayingVideo");
synchronized (mLock) {
switch (orientation) {
case ActivityInfo.SCREEN_ORIENTATION_PORTRAIT:
//always return portrait if orientation set to portrait
//return mPortraitRotation;
return mUpsideDownRotation;
case ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE:
//always return landscape if orientation set to landscape
return mLandscapeRotation;
case ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT:
//always return portrait if orientation set to portrait
//return mUpsideDownRotation;
return mPortraitRotation;
case ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE:
//always return seascape if orientation set to reverse landscape
return mSeascapeRotation;
case ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE:
//return either landscape rotation based on the sensor
mOrientationListener.setAllow180Rotation(
isLandscapeOrSeascape(Surface.ROTATION_180));
return getCurrentLandscapeRotation(lastRotation);
case ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT:
mOrientationListener.setAllow180Rotation(
!isLandscapeOrSeascape(Surface.ROTATION_180));
return getCurrentPortraitRotation(lastRotation);
}
mOrientationListener.setAllow180Rotation(
orientation == ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR
|| orientation == ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
// case for nosensor meaning ignore sensor and consider only lid
// or orientation sensor disabled
//or case.unspecified
if (mLidOpen) {
return mLidOpenRotation;
} else if (mDockMode == Intent.EXTRA_DOCK_STATE_CAR && mCarDockRotation >= 0) {
return mCarDockRotation;
} else if (mDockMode == Intent.EXTRA_DOCK_STATE_DESK && mDeskDockRotation >= 0) {
return mDeskDockRotation;
} else {
if (useSensorForOrientationLp(orientation)) {
return mOrientationListener.getCurrentRotation(lastRotation);
}
return Surface.ROTATION_0;
}
}
}
}
修改上面倒數一行程式碼把return Surface.ROTATION_0改為你要的方向，記得這個要和上面的匹配，寬高不同，Surface.ROTATION_0也不同。因為程式碼開頭就有
if (mPortraitRotation < 0) {
// Initialize the rotation angles for each orientation once.
Display d = ((WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay();
if (d.getWidth() > d.getHeight()) {
mPortraitRotation = Surface.ROTATION_90;
mLandscapeRotation = Surface.ROTATION_0;
mUpsideDownRotation = Surface.ROTATION_270;
mSeascapeRotation = Surface.ROTATION_180;
} else {
mPortraitRotation = Surface.ROTATION_0;
mLandscapeRotation = Surface.ROTATION_90;
mUpsideDownRotation = Surface.ROTATION_180;
mSeascapeRotation = Surface.ROTATION_270;
}
}