android如何改变默认横竖屏方向
16lz
2021-01-23
如何改变android默认的横竖屏，修改源码一个地方就可以了。
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; } }} }修改上面倒数一行代码把return Surface.ROTATION_0改为你要的方向，记得这个要和上面的匹配，宽高不同，Surface.ROTATION_0也不同。因为代码开头就有
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; } }
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