//获取是否存在NavigationBar
public static boolean checkDeviceHasNavigationBar(Context context) {
//通过判断设备是否有返回键、菜单键(不是虚拟键,是手机屏幕外的按键)来确定是否有navigation bar
boolean hasMenuKey = ViewConfiguration.
get(context)
.hasPermanentMenuKey()
;
boolean hasBackKey = KeyCharacterMap
.
deviceHasKey(KeyEvent.
KEYCODE_BACK)
;
if (!hasMenuKey && !hasBackKey) {
// 做任何你需要做的,这个设备有一个导航栏
return true;
}
return false;
}
//获取是否存在NavigationBar
public static boolean checkHuaWeiDeviceHasNavigationBar(Context context) {
boolean hasNavigationBar =
false;
try {
Resources rs = context.getResources()
;
int id = rs.getIdentifier(
"config_showNavigationBar", "bool", "android")
;
if (id >
0) {
hasNavigationBar = rs.getBoolean(id)
;
}
Class systemPropertiesClass = Class.
forName(
"android.os.SystemProperties")
;
Method m = systemPropertiesClass.getMethod(
"get", String.
class)
;
String navBarOverride = (String) m.invoke(systemPropertiesClass
, "qemu.hw.mainkeys")
;
if (
"1".equals(navBarOverride)) {
hasNavigationBar =
false;
}
else if (
"0".equals(navBarOverride)) {
hasNavigationBar =
true;
}
}
catch (Exception e) {
}
return hasNavigationBar
;
}
//NavigationBar状态是否是显示
public boolean isNavigationBarShow() {
Activity mContext = (Activity)
context;
if (Build.VERSION.
SDK_INT >= Build.VERSION_CODES.
JELLY_BEAN_MR1) {
Display display = mContext.getWindowManager().getDefaultDisplay()
;
Point size =
new Point()
;
Point realSize =
new Point()
;
display.getSize(size)
;
display.getRealSize(realSize)
;
return realSize.
y != size.
y;
}
else {
boolean menu = ViewConfiguration.
get(
context).hasPermanentMenuKey()
;
boolean back = KeyCharacterMap.
deviceHasKey(KeyEvent.
KEYCODE_BACK)
;
if (menu || back) {
return false;
}
else {
return true;
}
}
}
//获取NavigationBar高度
private int getNavigationBarHeight() {
Resources resources =
context.getResources()
;
int resourceId = resources.getIdentifier(
"navigation_bar_height", "dimen", "android")
;
int height = resources.getDimensionPixelSize(resourceId)
;
Log.
v(
"dbw", "Navi height:" + height)
;
return height
;
}
之后重写
onMeasure方法在该方法中进行判断是否存在NavigationBar,若存在判断NavigationBar的显示与隐藏，之后重新计算高度
