导航栏NavigationBar
源码部分:
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
mHasNavigationBar = res.getBoolean(com.android.internal.R.bool.config_showNavigationBar);
// Allow a system property to override this. Used by the emulator.
// See also hasNavigationBar().
String navBarOverride = SystemProperties.get("qemu.hw.mainkeys");
if ("1".equals(navBarOverride)) {
mHasNavigationBar = false;
} else if ("0".equals(navBarOverride)) {
mHasNavigationBar = true;
}
显示方案:
- [1]使用adb命令开启Android手机虚拟按键(导航栏)
adb root
adb remount
adb shell
$ getprop qemu.hw.mainkeys #查看值
$ setprop qemu.hw.mainkeys 0 #设置值为0,属性值为1 表示未打开虚拟按键,属性值为0表示一直打开虚拟按键
$ stop
$ start
- [2]修改config.xml文件
设置config_showNavigationBar为true就可以打开系统的虚拟键
framework/base/core/res/res/values/config.xml
<!-- 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_supportSystemNavigationKeys">false</bool>-->
一般这种config 文件都会有overlay文件,所以也需要修改对应的device下的overlay文件
device\qcom\msm8953_64\overlay\frameworks\base\core\res\res\values\config.xml
<!-- 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_supportSystemNavigationKeys">false</bool>-->
- [3]添加配置文件
添加qemu.hw.mainkeys=0,也就是修改 androdi系统的system/build.prop
device\qcom\msm8953_64\system.prop
qemu.hw.mainkeys=0
来源:oschina
链接:https://my.oschina.net/u/4267707/blog/4554482