Android 13 SystemUI 屏蔽导航栏；屏蔽锁屏；隐藏状态栏；禁止状态栏下拉；屏蔽Camera绿色图标；屏蔽原生音量条；屏蔽原生亮度条。

写在前面：本文给出Android 13 手机/平板原生SystemUI 一些实用的屏蔽补丁。

1、屏蔽导航栏

  导航栏屏蔽很简单，直接把创建导航栏的代码屏蔽即可。

代码路径:frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\phone\CentralSurfacesImpl.java
    // ================================================================================
    // Constructing the view
    // ================================================================================
    protected void makeStatusBarView(@Nullable RegisterStatusBarResult result) { . . . . . .
    	. . . . . .
    	. . . . . .
    	//createNavigationBar(result);//注释这行代码即可
    	. . . . . .
    	. . . . . .
    	. . . . . .
	}

2、屏蔽锁屏

diff --git a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
index 99b15db780..e68bc2f410 100644
--- a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
+++ b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
@@ -82,7 +82,7 @@ 1000 15000 - false+ true false 1 diff --git a/packages/apps/Settings/res/xml/security_settings_picker.xml b/packages/apps/Settings/res/xml/security_settings_picker.xml
index aed702983c..1c4ee9854e 100644
--- a/packages/apps/Settings/res/xml/security_settings_picker.xml
+++ b/packages/apps/Settings/res/xml/security_settings_picker.xml
@@ -24,7 +24,7 @@
             android:icon="@drawable/ic_lock_none"
             android:persistent="false"/> - +            settings:searchable="false"/> --> diff --git a/packages/apps/Settings/src/com/android/settings/password/ChooseLockGeneric.java b/packages/apps/Settings/src/com/android/settings/password/ChooseLockGeneric.java
index 8a4e9bb6c1..a1ca5340e3 100644
--- a/packages/apps/Settings/src/com/android/settings/password/ChooseLockGeneric.java
+++ b/packages/apps/Settings/src/com/android/settings/password/ChooseLockGeneric.java
@@ -656,11 +656,11 @@ public class ChooseLockGeneric extends SettingsActivity { // Used for testing purposes
             findPreference(ScreenLockType.NONE.preferenceKey).setViewId(R.id.lock_none);
-            findPreference(KEY_SKIP_FINGERPRINT).setViewId(R.id.lock_none);
-            findPreference(KEY_SKIP_FACE).setViewId(R.id.lock_none);
-            findPreference(KEY_SKIP_BIOMETRICS).setViewId(R.id.lock_none);
-            findPreference(ScreenLockType.PIN.preferenceKey).setViewId(R.id.lock_pin);
-            findPreference(ScreenLockType.PASSWORD.preferenceKey).setViewId(R.id.lock_password);
+            // findPreference(KEY_SKIP_FINGERPRINT).setViewId(R.id.lock_none); //xuhao add 
+            // findPreference(KEY_SKIP_FACE).setViewId(R.id.lock_none);
+            // findPreference(KEY_SKIP_BIOMETRICS).setViewId(R.id.lock_none);
+            // findPreference(ScreenLockType.PIN.preferenceKey).setViewId(R.id.lock_pin);
+            // findPreference(ScreenLockType.PASSWORD.preferenceKey).setViewId(R.id.lock_password);
         }
 
         private String getFooterString() {@@ -686,30 +686,30 @@ public class ChooseLockGeneric extends SettingsActivity { private void updatePreferenceText() { if (mForFingerprint) {-                setPreferenceTitle(ScreenLockType.PATTERN,
-                        R.string.fingerprint_unlock_set_unlock_pattern);
-                setPreferenceTitle(ScreenLockType.PIN, R.string.fingerprint_unlock_set_unlock_pin);
-                setPreferenceTitle(ScreenLockType.PASSWORD,
-                        R.string.fingerprint_unlock_set_unlock_password);
+                // setPreferenceTitle(ScreenLockType.PATTERN,
+                //         R.string.fingerprint_unlock_set_unlock_pattern);
+                // setPreferenceTitle(ScreenLockType.PIN, R.string.fingerprint_unlock_set_unlock_pin);
+                // setPreferenceTitle(ScreenLockType.PASSWORD,
+                //         R.string.fingerprint_unlock_set_unlock_password);
             } else if (mForFace) {-                setPreferenceTitle(ScreenLockType.PATTERN,
-                        R.string.face_unlock_set_unlock_pattern);
-                setPreferenceTitle(ScreenLockType.PIN, R.string.face_unlock_set_unlock_pin);
-                setPreferenceTitle(ScreenLockType.PASSWORD,
-                        R.string.face_unlock_set_unlock_password);
+                // setPreferenceTitle(ScreenLockType.PATTERN,
+                //         R.string.face_unlock_set_unlock_pattern);
+                // setPreferenceTitle(ScreenLockType.PIN, R.string.face_unlock_set_unlock_pin);
+                // setPreferenceTitle(ScreenLockType.PASSWORD,
+                //         R.string.face_unlock_set_unlock_password);
             } else if (mForBiometrics) {-                setPreferenceTitle(ScreenLockType.PATTERN,
-                        R.string.biometrics_unlock_set_unlock_pattern);
-                setPreferenceTitle(ScreenLockType.PIN, R.string.biometrics_unlock_set_unlock_pin);
-                setPreferenceTitle(ScreenLockType.PASSWORD,
-                        R.string.biometrics_unlock_set_unlock_password);
+                // setPreferenceTitle(ScreenLockType.PATTERN,
+                //         R.string.biometrics_unlock_set_unlock_pattern);
+                // setPreferenceTitle(ScreenLockType.PIN, R.string.biometrics_unlock_set_unlock_pin);
+                // setPreferenceTitle(ScreenLockType.PASSWORD,
+                //         R.string.biometrics_unlock_set_unlock_password);
             }
 
             if (mManagedPasswordProvider.isSettingManagedPasswordSupported()) {-                setPreferenceTitle(ScreenLockType.MANAGED,
-                        mManagedPasswordProvider.getPickerOptionTitle(mForFingerprint));
+                // setPreferenceTitle(ScreenLockType.MANAGED,
+                //         mManagedPasswordProvider.getPickerOptionTitle(mForFingerprint));
             } else {-                removePreference(ScreenLockType.MANAGED.preferenceKey);
+                //removePreference(ScreenLockType.MANAGED.preferenceKey);
             }
 
             if (!(mForFingerprint && mIsSetNewPassword)) {

3、隐藏状态栏

4、禁止状态栏下拉

  解锁之后禁止状态栏下拉显示快捷通知、快捷设置。

5、屏蔽Camera绿色图标

  Android 13 使用摄像头时右上角会有绿色图标，屏蔽方法如下：

6、屏蔽原生音量条

frameworks\base\packages\SystemUI\src\com\android\systemui\volume\VolumeDialogImpl.java

7、屏蔽原生亮度条