项目需求APP全屏时,要禁止状态栏的下拉,这个应该是一个普遍的需求了吧,但android系统没有直接提供给普通APP直接调用的接口。那么我们只能自己想办法增加接口去实现该功能了。
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framework jar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。
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。
因为StatusBarManager是隐藏方法,所以要在IDE中直接使用的话要导入framework jar包,怎么找到framework jar在1. 修改SystemUI中有说过,这里就不重复了。直接上代码:
<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);
}
java -jar signapk.jar platform.x509.pem platform.pk8 TestDemo.apk TestDemoNew.apk
TestDemoNew.apk就是系统签名后的apk,然后push到/system/app/目录下就ok了。关于签名的知识就不多说了,可自行找到相关资料。
下面看下原生系统中电话处理禁止下拉的做法,代码如下:
路径:==/packages/apps/Phone/src/com/android/phone/NotificationMgr.java==
/**
* Updates the status bar to reflect the current desired state.
*/
private void updateStatusBar() {
int state = StatusBarManager.DISABLE_NONE;
if (!mIsExpandedViewEnabled) {
state |= StatusBarManager.DISABLE_EXPAND;
}
if (!mIsNotificationEnabled) {
state |= StatusBarManager.DISABLE_NOTIFICATION_ALERTS;
}
if (!mIsSystemBarNavigationEnabled) {
// Disable *all* possible navigation via the system bar.
state |= StatusBarManager.DISABLE_HOME;
state |= StatusBarManager.DISABLE_RECENT;
state |= StatusBarManager.DISABLE_BACK;
}
if (DBG) log("updateStatusBar: state = 0x" + Integer.toHexString(state));
mStatusBarManager.disable(state);
}
从这个方法中我们知道系统禁用状态栏的方法就是调用StatusBarManager实现的。
Android 应用层面屏蔽状态栏方法总结
禁止Android的StatusBar下拉