【移动应用开发技术】Android中怎么禁止状态栏下拉

【移动应用开发技术】Android中怎么禁止状态栏下拉

Android中怎么禁止状态栏下拉，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面在下将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。1.修改SystemUI路径：==/frameworks/base/packages/SystemUI//src/com/android/systemui/statusbar/phone/PhoneStatusBar.Java==通过在PhoneStatusBar.java类中注册一个广播的方式来实现状态栏的禁用和解除，其核心方法就是调用了disable()方法。disable()是SystemUI自定义的方法，感兴趣的同学可以去看其具体实现。下面来看下我们在SystemUI中的具体实现代码：@@

-494,6

+494,31

@@

public

class

PhoneStatusBar

extends

BaseStatusBar

implements

DemoMode

{

}

+

//add

steven

zhang

by

20160701

+

private

BroadcastReceiver

mStatusShowHide

=

new

BroadcastReceiver()

{

+

+

@Override

+

public

void

onReceive(final

Context

context,

Intent

intent)

{

+

//

TODO

Auto-generated

method

stub

+

String

action

=

intent.getAction();

+

+

if

("com.aura.statusbar.SHOW_OR_HIDE".equals(action))

{

+

//

StatusBarManager.DISABLE_NONE

+

//

StatusBarManager.DISABLE_EXPAND

+

final

int

mode

=

intent.getIntExtra("mode",

StatusBarManager.DISABLE_NONE);

+

if

(mNavigationBarView

!=

null)

{

+

mHandler.post(new

Runnable()

{

+

+

@Override

+

public

void

run()

{

+

+

disable(mode);

+

}

+

});

+

}

+

}

+

}

+

};

//micheal

add

the

Broadcast

interface

for

Control

the

wifi

sleep

mode

change

begin

20150514

private

BroadcastReceiver

wifiSleepModeChangeReceiver

=

new

BroadcastReceiver(){

@Override

@@

-519,6

+544,10

@@

public

class

PhoneStatusBar

extends

BaseStatusBar

implements

DemoMode

{

//

================================================================================

protected

PhoneStatusBarView

makeStatusBarView()

{

final

Context

context

=

mContext;

+

//

add

steven

zhang

by

20160701

+

IntentFilter

statusFilter

=

new

IntentFilter();

+

statusFilter.addAction("com.aura.statusbar.SHOW_OR_HIDE");

+

context.registerReceiver(mStatusShowHide,

statusFilter);既然显示隐藏的广播我们已经注册好了，那么看下我们在APP中的具体调用吧。@Override

protected

void

onResume()

{

super.onResume();

Intent

i

=

new

Intent("com.aura.statusbar.SHOW_OR_HIDE");

i.putExtra("mode",

StatusBarManager.DISABLE_EXPAND);

sendBroadcast(i);

}

@Override

protected

void

onPause()

{

super.onPause();

Intent

i

=

new

Intent("com.aura.statusbar.SHOW_OR_HIDE");

i.putExtra("mode",

StatusBarManager.DISABLE_NONE);

sendBroadcast(i);

}在Activity中重写onResume和onPause方法实现状态栏的禁用和解除禁用。另：StatusBarManager是一个隐藏类，所以调用的时候可能导入不了包会报错，最简单的方法就是之间用数值替换，下面列出对应关系。public

static

final

int

DISABLE_EXPAND

=

0x00010000;

public

static

final

int

DISABLE_NOTIFICATION_ICONS

=

0x00020000;

public

static

final

int

DISABLE_NOTIFICATION_ALERTS

=

0x00040000;

public

static

final

int

DISABLE_NOTIFICATION_TICKER

=

0x00080000;

public

static

final

int

DISABLE_SYSTEM_INFO

=

0x00100000;

public

static

final

int

DISABLE_HOME

=

0x00200000;

public

static

final

int

DISABLE_RECENT

=

0x01000000;

public

static

final

int

DISABLE_BACK

=

0x00400000;

public

static

final

int

DISABLE_CLOCK

=

0x00800000;

public

static

final

int

DISABLE_SEARCH

=

0x02000000;

public

static

final

int

DISABLE_NONE

=

0x00000000;

public

static

final

int

DISABLE_NAVIGATION

=

View.STATUS_BAR_DISABLE_HOME

|

View.STATUS_BAR_DISABLE_RECENT;

public

static

final

int

DISABLE_MASK

=

DISABLE_EXPAND

|

DISABLE_NOTIFICATION_ICONS

|

DISABLE_NOTIFICATION_ALERTS

|

DISABLE_NOTIFICATION_TICKER

|

DISABLE_SYSTEM_INFO

|

DISABLE_RECENT

|

DISABLE_HOME

|

DISABLE_BACK

|

DISABLE_CLOCK

|

DISABLE_SEARCH;所以不能引用StatusBarManager的同学之间使用其数值是一样的。如果有源码的朋友，可以使用系统编译的后frameworkjar包作为APP的lib就可以直接使用StatusBarManager方法了。其路径为/out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/classes.jar。将classes.jar改为framework.jar导入工程就OK了。通过上面的步骤我们知道最关键的就是调用PhoneStatusBar中disable()方法，我们这里是以广播的方式实现的，任何有新方法的同学可以脑洞大开，只要能实现调用到disable()就可以禁用状态栏。2.修改PhoneWindowManager路径:==/frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java==//

monitor

for

system

gestures

mSystemGestures

=

new

SystemGesturesPointerEventListener(context,

new

SystemGesturesPointerEventListener.Callbacks()

{

@Override

public

void

onSwipeFromTop()

{

if

(isGestureIsolated())

return;

if

(mStatusBar

!=

null)

{

requestTransientBars(mStatusBar);

}

}

@Override

public

void

onSwipeFromBottom()

{

if

(isGestureIsolated())

return;

if

(mNavigationBar

!=

null

&&

mNavigationBarOnBottom)

{

requestTransientBars(mNavigationBar);

}

}

@Override

public

void

onSwipeFromRight()

{

if

(isGestureIsolated())

return;

if

(mNavigationBar

!=

null

&&

!mNavigationBarOnBottom)

{

requestTransientBars(mNavigationBar);

}

}

@Override

public

void

onDebug()

{

//

no-op

}

private

boolean

isGestureIsolated()

{

boolean

ret

=

false;

ret

=

Settings.System.getInt(mContext.getContentResolver(),"status_bar_disabled",

0)

==

1;

return

ret;

}

});在SystemGesturesPointerEventListener.Callbacks的方法中增加一个判断函数isGestureIsolated()用于判断是否支持其对应的手势操作。在这里特别说明一下，在网上找到方法用private

boolean

isGestureIsolated()

{

boolean

ret

=

false;

WindowState

win

=

mFocusedWindow

!=

null

?

mFocusedWindow:mTopFullscreenOpaqueWindowState;

if

(win

!=

null

&&

(win.getSystemUiVisibility()

&

View.SYSTEM_UI_FLAG_IMMERSIVE_GESTURE_ISOLATED)

!=

0)

ret

=

true;

else

ret

=

false;

return

ret;

}getSystemUiVisibility()这种方式做判断的时候，获取到的win不一定是当前activity的，有时候是statusbar的，所以这样的效果不是很好，经常会下拉出状态栏，于是就有了Settings.System.getInt(mContext.getContentResolver(),"status_bar_disabled",

0)

==

1;做判断的方法，用这种方式有一个好处就是非常直接，需要它禁止下拉的时候，就调用Settings.System.putInt(getContentResolver(),

"status_bar_disabled",

1);就OK了，解除禁止的时候调用Settings.System.putInt(getContentResolver(),

"status_bar_disabled",

0);看下Activity中的具体调用@Override

protected

void

onResume()

{

super.onResume();

//禁止下拉

Settings.System.putInt(getContentResolver(),

"status_bar_disabled",

1);

}

@Override

protected

void

onPause()

{

super.onPause();

//解除禁止

Settings.System.putInt(getContentResolver(),

"status_bar_disabled",

0);

}在AndroidManifest.xml中声明相应的权限<uses-permission

android:name="android.permission.WRITE_SETTINGS"

/>网上还有修改PhoneWindowManager中的adjustSystemUiVisibilityLw方法的，如:@Override

public

int

adjustSystemUiVisibilityLw(int

visibility){

if

(Settings.System.getInt(mContext.getContentResolver(),"status_bar_disabled",

0)

==

0)

{

mStatusBarController.adjustSystemUiVisibilityLw(mLastSystemUiFlags,

visibility);

}

mNavigationBarController.adjustSystemUiVisibilityLw(mLastSystemUiFlags,

visibility);

//

Reset

any

bits

in

mForceClearingStatusBarVisibility

that

//

are

now

clear.

mResettingSystemUiFlags

&=

visibility;

//

Clear

any

bits

in

the

new

visibility

that

are

currently

being

//

force

cleared,

before

reporting

it.

return

visibility

&

~mResettingSystemUiFlags

&

~mForceClearedSystemUiFlags;

}在adjustSystemUiVisibilityLw增加一个标志的判断，但这种实现的效果也不是很好，还是会出现下拉能拉下来的情况。综上所叙，修改PhoneWindowManager实现禁止下拉的方法还是在SystemGesturesPointerEventListener.Callbacks中增加一个内部方法，这个内部方法使用标志位的形式来判断是否支持状态栏下拉。3.使用StatusBarManager中方法因为StatusBarManager是隐藏方法，所以要在IDE中直接使用的话要导入frameworkjar包，怎么找到frameworkjar在1.修改SystemUI中有说过，这里就不重复了。直接上代码：1.在AndroidManifest.xml中声明相应的权限<uses-permission

android:name="android.permission.STATUS_BAR"/>

<uses-permission

android:name="android.permission.EXPAND_STATUS_BAR"/>网上有文章说要声明android

:

sharedUserId="android.uid.system"亲自测试没有加上面这行代码，也是可以使用的。2.在Activity中的引用@Override

protected

void

onResume()

{

super.onResume();

StatusBarManager

statusBarManager

=

(StatusBarManager)

getSystemService(Context.STATUS_BAR_SERVICE);

statusBarManager.disable(StatusBarManager.DISABLE_EXPAND);

}

@Override

protected

void

onPause()

{

super.onPause();

StatusBarManager

statusBarManager

=

(StatusBarManager)

getSystemService(Context.STATUS_BAR_SERVICE);

statusBarManager.disable(StatusBarManager.DISABLE_NONE);

}1.是使用系统签名，编译为系统appjava

-jar

signapk.jar

platform.x