Android让所有应用都竖屏显示或者横屏显示

1. 所有应用竖屏显示：

frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

public int rotationForOrientationLw(int orientation, int lastRotation,  
            boolean displayEnabled) {  
            // 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;  
  }  
  
.......  

2.  所有应用横屏屏显示

frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

public int rotationForOrientationLw(int orientation, int lastRotation,  
            boolean displayEnabled) {  
            // 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_0;  //jeff. ROTATION_90;  
                mLandscapeRotation = Surface.ROTATION_0;  
                mUpsideDownRotation = Surface.ROTATION_90;  //jeff. 270;  
                mSeascapeRotation = Surface.ROTATION_180;  
            }