安卓MTK屏蔽NavigationBar, 在SDK中通过搜索关键字修改，可适用大部分MTK及安卓版本．

方法介绍

1. 搜索device/mediatek与device/mediateksample下的.xml把config_showNavigationBar值置为false
   如下为搜索指令
   find device/mediatek -name “*.xml” | xargs grep config_showNavigationBar
   把true值改为false
2. 修改自己工程目录下的system.prop中qemu.hw.mainkeys=0为qemu.hw.mainkeys=1
   如下为搜索指令
   find device/mediatek -name “.prop" | xargs grep qemu.hw.mainkeys
   find device/mediateksample/ -name ".prop” | xargs grep “qemu.hw.mainkeys”
   这样可能会搜索到好几个文件，找到自己工程目录下的文件修改就行

SDK代码修改

如下为示例patch

diff --git a/device/mediatek/common/overlay/navbar/frameworks/base/core/res/res/values/config.xml b/device/mediatek/common/overlay/navbar/frameworks/base/core/res/res/values/config.xml
index 22d4ea66da..c06ebfbb49 100755
--- a/device/mediatek/common/overlay/navbar/frameworks/base/core/res/res/values/config.xml
+++ b/device/mediatek/common/overlay/navbar/frameworks/base/core/res/res/values/config.xml
@@ -22,6 +22,6 @@<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2"><!-- Whether a software navigation bar should be shown. NOTE: in the future this may beautodetected from the Configuration. -->
-    <bool name="config_showNavigationBar">true</bool>
+    <bool name="config_showNavigationBar">false</bool></resources>
diff --git a/device/mediateksample/xx/system.prop b/device/mediateksample/xx/system.prop
index 8a7eb1f903..8581353c76 100755
--- a/device/mediateksample/xx/system.prop
+++ b/device/mediateksample/xx/system.prop
@@ -50,8 +50,8 @@ ro.audio.silent=0ro.zygote.preload.enable=0-# temporary enables NAV bar (soft keys)
-qemu.hw.mainkeys=0
+# temporary disable/enables NAV bar (soft keys)
+qemu.hw.mainkeys=1ro.kernel.zio=38,108,105,16#ro.kernel.qemu=0

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