android2.2 android2.3.4 竖屏简单更改

设定 ro.sf.hwrotation

在根目录下的init.rc文件添加setprop ro.sf.hwrotation 270，更改这个 property 为 270，强制屏幕旋转 270 度。

android2.2解决触控屏幕异常

$(android_root_path)/frameworks/base/services/java/com/android/server/InputDevice.java

添加包

importandroid.os.SystemProperties;

添加成员变量

privatestaticfinalintHWROTATION=SystemProperties.getInt("ro.sf.hwrotation",0)/90;

在方法MotionEvent generateAbsMotion(InputDevice device, long curTime,
long curTimeNano, Display display, int orientation,
int metaState)中开始处添加

orientation = (orientation + HWROTATION) % 4;

android2.3.4解决触控屏幕异常

$(android_root_path)/frameworks/base/libs/ui/InputReader.cpp文件中函数

TouchInputMapper::configureSurfaceLocked()中（注:此方法只是可行，

更优方案请深入android输入子系统)原：

    if (mAssociatedDisplayId >= 0) {        // Note: getDisplayInfo is non-reentrant so we can continue holding the lock.        if (! getPolicy()->getDisplayInfo(mAssociatedDisplayId, & width, & height, & orientation)) {            return false;        }    } else {        orientation = InputReaderPolicyInterface::ROTATION_0;        width = mRawAxes.x.getRange();        height = mRawAxes.y.getRange();    }

修改后：

    if (mAssociatedDisplayId >= 0) {        // Note: getDisplayInfo is non-reentrant so we can continue holding the lock.        if (! getPolicy()->getDisplayInfo(mAssociatedDisplayId, & width, & height, & orientation)) {            return false;        }        char property[4]; int tmpInt;        if (property_get("ro.sf.hwrotation", property, NULL) > 0) {            switch (atoi(property)) {            case 90:            tmpInt=width;            width =  height;            height = tmpInt;            orientation = (orientation + 1)%4;                break;            case 180:            orientation = (orientation + 2)%4;    break;            case 270:            tmpInt=width;width =  height;height = tmpInt;orientation = (orientation + 3)%4;                break;            }        }    } else {        orientation = InputReaderPolicyInterface::ROTATION_0;        width = mRawAxes.x.getRange();        height = mRawAxes.y.getRange();    }

记得添加头文件#include <cutils/properties.h>

reference:

http://git.android-x86.org/?p=platform/frameworks/base.git;a=commitdiff;h=c5cc0d3bb650a219b8904a5bbb7f5674e53e1a6f

http://cwhuang.info/2010/11/fix-rotated-screen-issues

更多相关文章

随机推荐