android5.1系统修改源码实现隐藏底部状态栏、隐藏通知栏、隐藏上方状态栏、永不熄屏的方法

结合其他博客的介绍的方法，对android5.1系统源码进行修改实现隐藏底部状态栏、隐藏通知栏、隐藏上方状态栏、永不熄屏等功能。亲测可用

1.隐藏底部状态栏

       到android/frameworks/base/policy/src/com/android/internal/policy/impl目录下修改PhoneWindowManager.java文件.

       修改方法: 定位到setInitialDisplaySize函数,找到注释

// Height of thenavigation bar when presented horizontally at bottom

       将注解下的源代码修改为

mNavigationBarHeightForRotation[mPortraitRotation]=

mNavigationBarHeightForRotation[mUpsideDownRotation]=

//res.getDimensionPixelSize(com.android.internal.R.dimen.navigation_bar_height);

0;

mNavigationBarHeightForRotation[mLandscapeRotation]=

mNavigationBarHeightForRotation[mSeascapeRotation]=

//res.getDimensionPixelSize(com.android.internal.R.dimen.navigation_bar_height_landscape);

0;

 

2.隐藏通知栏

       到android/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone目录下打开PhoneStatusBarView.java文件.

       找到onTouchEvent()和onInterceptTouchEvent()两个方法,将方法里面的代码注释掉(如下所示),即可实现效果

 

@Override

    public boolean onTouchEvent(MotionEventevent) {

        return false;

    }

 

@Override

    public booleanonInterceptTouchEvent(MotionEvent event) {

       return false;

    }

3.隐藏上方的状态栏

       到android/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone的目录下打开PhoneStatusBar.java文件.

       找到addStatusBarWindow()方法,在方法最后加一行代码mStatusBarView.setVisibility(View.GONE);

       变为:

       private void addStatusBarWindow() {

        makeStatusBarView();

        mStatusBarWindowManager = newStatusBarWindowManager(mContext);

        mStatusBarWindowManager.add(mStatusBarWindow,getStatusBarHeight());

               mStatusBarView.setVisibility(View.GONE);

    }

 

       到android/frameworks/base/core/res/res/values目录下,打开dimens.xml文件.修改

<dimenname=”status_bar_height”>25dip</dimen>为

<dimenname=”status_bar_height”>0dip</dimen>

4 永不熄屏

       到android/frameworks/base/packages/SettingsProvider/res/values目录下,打开defaults.xml文件

修改.<integername="def_screen_off_timeout">6000</integer>为<integername="def_screen_off_timeout">-1</integer>

       到android/frameworks/base/services/core/java/com/android/server/power目录下,打开PowerManagerService.java文件.修改getScreenOffTimeoutLocked()函数为:

 

 private int getScreenOffTimeoutLocked(intsleepTimeout) {

        int nosleep;

       int timeout = mScreenOffTimeoutSetting;

        if(isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) {

            timeout = Math.min(timeout,mMaximumScreenOffTimeoutFromDeviceAdmin);

        }

        if(mUserActivityTimeoutOverrideFromWindowManager >= 0) {

            timeout = (int)Math.min(timeout,mUserActivityTimeoutOverrideFromWindowManager);

        }

        if (sleepTimeout >= 0) {

            timeout = Math.min(timeout,sleepTimeout);

        }

       nosleep = mScreenOffTimeoutSetting;

       if(nosleep <0)

       {

           nosleep = mMaximumScreenOffTimeoutFromDeviceAdmin;

           return Math.max(nosleep,mMaximumScreenOffTimeoutFromDeviceAdmin);

       }

        return Math.max(timeout,mMinimumScreenOffTimeoutConfig);

    }