理性去除导航栏 NavigationBar
说明
// SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
boolean showNav = mWindowManagerService.hasNavigationBar();
if (DEBUG) Log.v(TAG, "hasNavigationBar=" + showNav);
if (showNav) {
mNavigationBarView =
(NavigationBarView) View.inflate(context, R.layout.navigation_bar, null);
....
}
// services/core/java/com/android/server/wm/WindowManagerService.java
mWindowManagerService.hasNavigationBar()
mPolicy.hasNavigationBar();
// services/core/java/com/android/server/policy/PhoneWindowManager.java
mHasNavigationBar = res.getBoolean(com.android.internal.R.bool.config_showNavigationBar);
由此可见, 系统资源配置项里面原本, 提供了 NavigationBar 可视化选项. 所以修改 R.bool.config_showNavigationBar 即可实现
修改代码
diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index 1778fbb..3d0cb49 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -1479,7 +1479,7 @@
<!-- Whether a software navigation bar should be shown. NOTE: in the future this may be
autodetected from the Configuration. -->
- <bool name="config_showNavigationBar">true</bool>
+ <bool name="config_showNavigationBar">false</bool>
<!-- Whether action menu items should be displayed in ALLCAPS or not.
Defaults to true. If this is not appropriate for specific locales