android隱藏顯示狀態欄

㈠ Android 完全隱藏狀態欄方法

Android 完全隱藏狀態欄方法  https://blog.csdn.net/ljbphoebe/article/details/88179576

1. 隱藏ActionBar：

ActionBar actionBar = getActionBar();

if (actionBar != null) {

    actionBar.hide();

}

如果是繼承AppCompatActivity，就用getSupportActionBar()。

2. 隱藏狀態欄

getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);

通過這兩個步就可以全屏顯示啟動頁了。

然而，當開始動態申請許可權，彈出系統的許可權提示對話框後，狀態欄又重新露出來了。我日，不是隱藏了嗎？怎麼又出來了，什麼鬼？

通過查看源碼的解釋：

/**

* Request that the visibility of the status bar or other screen/window

* decorations be changed.

*

* <p>This method is used to put the over device UI into temporary modes

* where the user's attention is focused more on the application content,

* by dimming or hiding surrounding system affordances.  This is typically

* used in conjunction with {@link Window#FEATURE_ACTION_BAR_OVERLAY

* Window.FEATURE_ACTION_BAR_OVERLAY}, allowing the applications content

* to be placed behind the action bar (and with these flags other system

* affordances) so that smooth transitions between hiding and showing them

* can be done.

*

* <p>Two representative examples of the use of system UI visibility is

* implementing a content browsing application (like a magazine reader)

* and a video playing application.

*

* <p>The first code shows a typical implementation of a View in a content

* browsing application.  In this implementation, the application goes

* into a content-oriented mode by hiding the status bar and action bar,

* and putting the navigation elements into lights out mode.  The user can

* then interact with content while in this mode.  Such an application should

* provide an easy way for the user to toggle out of the mode (such as to

* check information in the status bar or access notifications).  In the

* implementation here, this is done simply by tapping on the content.

*

* {@sample development/samples/ApiDemos/src/com/example/android/apis/view/ContentBrowserActivity.java

*      content}

*

* <p>This second code sample shows a typical implementation of a View

* in a video playing application.  In this situation, while the video is

* playing the application would like to go into a complete full-screen mode,

* to use as much of the display as possible for the video.  When in this state

* the user can not interact with the application; the system intercepts

* touching on the screen to pop the UI out of full screen mode.  See

* {@link #fitSystemWindows(Rect)} for a sample layout that goes with this code.

*

* {@sample development/samples/ApiDemos/src/com/example/android/apis/view/VideoPlayerActivity.java

*      content}

*

* @param visibility  Bitwise-or of flags {@link #SYSTEM_UI_FLAG_LOW_PROFILE},

* {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}, {@link #SYSTEM_UI_FLAG_FULLSCREEN},

* {@link #SYSTEM_UI_FLAG_LAYOUT_STABLE}, {@link #SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION},

* {@link #SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN}, {@link #SYSTEM_UI_FLAG_IMMERSIVE},

* and {@link #SYSTEM_UI_FLAG_IMMERSIVE_STICKY}.

*/

從釋義上可以知道，setSystemUiVisibility()是用於使系統UI進入一種臨時的模式，目的是使用戶的注意力關注於應用程序的內容上。所以單獨一個Activity這樣設置是可以全屏顯示的，這個只對當前的Activity有效。可是當申請系統許可權使，彈出的對話框是系統的Activity，通過adb shell mpsys activity 來看，當前最頂端的Activity已經是GrantPermissionsActivity。

Run #2: ActivityRecord{2b99111 u0 com.google.android.packageinstaller/com.android.packageinstaller.permission.ui.GrantPermissionsActivity t141}

而這個GrantPermissionsActivity，我們並無法去設置它的setSystemUiVisibility()。所以這種方法不奏效。

通過和同事討論，後來找到一種方法，可以實現我們的需求。

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

這種方法是OK的。

它的源碼釋義是：

/**

* Set the flags of the window, as per the

* {@link WindowManager.LayoutParams WindowManager.LayoutParams}

* flags.

*

* <p>Note that some flags must be set before the window decoration is

* created (by the first call to

* {@link #setContentView(View, android.view.ViewGroup.LayoutParams)} or

* {@link #getDecorView()}:

* {@link WindowManager.LayoutParams#FLAG_LAYOUT_IN_SCREEN} and

* {@link WindowManager.LayoutParams#FLAG_LAYOUT_INSET_DECOR}.  These

* will be set for you based on the {@link android.R.attr#windowIsFloating}

* attribute.

*

* @param flags The new window flags (see WindowManager.LayoutParams).

* @param mask Which of the window flag bits to modify.

* @see #addFlags

* @see #clearFlags

*/

public void setFlags(int flags, int mask) {}

仔細分析發現，這個是設置整個當前Window的，而setSystemUiVisibility()聚焦於顯示Activity內容的，還是有差別的。

/**

* Window flag: hide all screen decorations (such as the status bar) while

* this window is displayed.  This allows the window to use the entire

* display space for itself -- the status bar will be hidden when

* an app window with this flag set is on the top layer. A fullscreen window

* will ignore a value of {@link #SOFT_INPUT_ADJUST_RESIZE} for the window's

* {@link #softInputMode} field; the window will stay fullscreen

* and will not resize.

*

* <p>This flag can be controlled in your theme through the

* {@link android.R.attr#windowFullscreen} attribute; this attribute

* is automatically set for you in the standard fullscreen themes

* such as {@link android.R.style#Theme_NoTitleBar_Fullscreen},

* {@link android.R.style#Theme_Black_NoTitleBar_Fullscreen},

* {@link android.R.style#Theme_Light_NoTitleBar_Fullscreen},

* {@link android.R.style#Theme_Holo_NoActionBar_Fullscreen},

* {@link android.R.style#Theme_Holo_Light_NoActionBar_Fullscreen},

* {@link android.R.style#Theme_DeviceDefault_NoActionBar_Fullscreen}, and

* {@link android.R.style#Theme_DeviceDefault_Light_NoActionBar_Fullscreen}.</p>

*/

public static final int FLAG_FULLSCREEN      = 0x00000400;

從釋義上得知，設置這個flag可以隱藏所有的屏幕修飾，像status bar，用於Window使用整個顯示屏。這個完全是我們的目的了。

㈡ Android去除狀態欄的方法匯總

一、隱藏標題欄

//隱藏標題欄

this.requestWindowFeature(Window.FEATURE_NO_TITLE);

二、隱藏狀態欄

//隱藏狀態欄

this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

三、去掉所有Activity界面的標題欄

修改AndroidManifest.xml

在application 標簽中添加android:theme="@android:style/Theme.NoTitleBar"

四、去掉所有Activity界面的TitleBar 和StatusBar

修改AndroidManifest.xml

在application 標簽中添加

android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

㈢ 安卓手機隱藏狀態欄怎麼操作

方法：

1、進入手機「設置」界面，依次點擊「隱私權」→「恢復出廠設置」項

2、在彈出的「恢復出廠設置」窗口中點擊「重置手機」按鈕

3、接著點擊「備份數據」按鈕，對系統中的重要數據進行一次備份。

4、然後點擊「消除全部數據」按鈕。

5、此時手機會自動重啟，並進行數據的清除操作。

6、重啟完成後狀態欄又出現。

㈣ Android 顯示、隱藏狀態欄和導航欄

Android 顯示、隱藏狀態欄和導航欄
控制狀態欄顯示，Activity的主題中配置全屏屬性

控制狀態欄顯示，在setContentView之前設置全屏的flag

控制狀態欄顯示，在任何位置通過添加和移除全屏的flag

控制狀態欄和導航欄顯示，setSystemUiVisibility

// 全屏展示

// 非全屏顯示，顯示狀態欄和導航欄