Power & Source of Big Ideas

Rotate Android 5.1 by code NOT by app

Moderators: chensy, FATechsupport

Dear Frendlyarm,

is there any way to change the screen orientation (portrait/landscape etc.) in your Android 5.1 system code?

I don't want to do it with a thied party app.
I want to do it in the source code or any other config file eg. build.prop.

I've added ro.sf.hwrotation to build.prop and it had no effect.

Changing user_rotation value via adb changed the orientation of apps only.

I want to rotate the whole system including the launcher.

Did you every find out how to do this?

The website for the HD702 LCD display shows this is a landscape display but I only seem to have a portrait display. I need to use this as landscape only.
Hi @v8dave,

I´ve got a reply from jiameijiang via email:

You can refer to the following methods, but we can not guarantee that you can use it. First ,you must clone the latest Andorid5.1 source code , then according to the following steps to modify.
1. enter this path: framework/base/core/res/res/values/config.xml
config_lidOpenRotation = 0 ;----> config_lidOpenRotation = 90 ;
2.enter this path : framework/base/services/core/java/com/android/server/wm/WindowMangerService.java
int mRotation = 0 ;-----> int mRotation = 1 ;
3. and in this path : framework/base/services/surfaceflinger/DisplayDevice.cpp
setProjection(Displaystate::eOrientationDefault, mViewprot ,mFrame )------>
setProjection( Displaystate::eOrientation90 ,mViewprot , mFrame )

After compiling the source code, you need to refer to wiki to replace the file system which on board.
But it also has some problem on display, so you need to do some edits.

1. framework/base/cmds/bootanimation/BootAnimation.cpp
In this function : status_t BootAnimation::readyToRun
Modify the code: spcontrol=session()- >createsurface(String8("BootAnimation"),dinfo.w,dinfo.h.PIXEL_FORMAT_RGB_565);
as :
spcontrol=session()- >createsurface(String8"BootAnimation"),dinfo.h,dinfo.w.PIXEL_FORMAT_RGB_565);
2. /framework/native/services/surfaceflinger/DisplayDevice.cpp
Modify this function:

void DisplayDevice::setProjection(intorientation, conts Rect&newViewport,constRect&newFrame)中
frame = Rect(w,h);----->frame = Rect(h,w);
In Transform R, add this code:
orientation = DisplayState::eorientation90;

3. /framework/native/services/surfaceflinger/surfaceFlinger.cpp
Modify the function
d.orientation = DisplayState::eOrientationDefault ;----->d.orientation=DisplayState::eOrientatio90;

Last ,compile the source code and replace it .

I didn´t try it yet, feel free to give it a shot and report back.


Who is online

In total there are 2 users online :: 0 registered, 0 hidden and 2 guests (based on users active over the past 5 minutes)
Most users ever online was 106 on Tue Jun 04, 2019 5:48 pm

Users browsing this forum: No registered users and 2 guests