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,下面小编将为大家详细讲解,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。
@Overrideprotected void onResume() { super.onResume(); Intent i = new Intent("com.aura.statusbar.SHOW_OR_HIDE"); i.putExtra("mode", StatusBarManager.DISABLE_EXPAND); sendBroadcast(i);}@Overrideprotected 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。
2.修改PhoneWindowManager
路径:==/frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java==
// monitor for system gesturesmSystemGestures = 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
@Overrideprotected void onResume() { super.onResume(); //禁止下拉 Settings.System.putInt(getContentResolver(), "status_bar_disabled", 1);}@Overrideprotected 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:
@Overridepublic 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:
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
@Overrideprotected void onResume() { super.onResume(); StatusBarManager statusBarManager = (StatusBarManager) getSystemService(Context.STATUS_BAR_SERVICE); statusBarManager.disable(StatusBarManager.DISABLE_EXPAND);}@Overrideprotected void onPause() { super.onPause(); StatusBarManager statusBarManager = (StatusBarManager) getSystemService(Context.STATUS_BAR_SERVICE); statusBarManager.disable(StatusBarManager.DISABLE_NONE);}
是使用系统签名,编译为系统app
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==
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);}
看完上述内容是否对您有帮助呢?如果还想对相关知识有进一步的了解或阅读更多相关文章,请关注编程网行业资讯频道,感谢您对编程网的支持。