安卓沉浸式状态栏适配底部导航栏虚拟按键

安卓沉浸式状态栏适配底部导航栏虚拟按键

网上看的好多人说用android:fitsSystemWindows="true"可以适配底部虚拟按键，但在我的项目中确实是底部按钮不再遮挡了，但是沉浸式状态栏失效了，然后通过以下方法解决了

在BaseActivity中设置
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//底部虚拟导航栏适配
if (StatusBarUtil.hasNavigationBarShow(this)) {
getWindow().getDecorView().findViewById(android.R.id.content).setPadding(0, 0, 0, StatusBarUtil.getNavigationBarHeight(this));
}
}

方法实现
public static boolean hasNavigationBarShow(Activity activity) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
return false;
}
WindowManager wm = (WindowManager) activity.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
DisplayMetrics outMetrics = new DisplayMetrics();
//获取整个屏幕的高度
display.getRealMetrics(outMetrics);
int heightPixels = outMetrics.heightPixels;
int widthPixels = outMetrics.widthPixels;
//获取内容展示部分的高度
outMetrics = new DisplayMetrics();
display.getMetrics(outMetrics);
int heightPixelsContent = outMetrics.heightPixels;
int widthPixelsContent = outMetrics.widthPixels;
int h = heightPixels - heightPixelsContent;
int w = widthPixels - widthPixelsContent;
return w > 0 || h > 0; //竖屏和横屏两种情况
}

/**

• 获取导航栏高度
• @param context
• @return
  */
  public static int getNavigationBarHeight(Context context) {
  return getSystemComponentDimen(context, “navigation_bar_height”);
  }

public static int getSystemComponentDimen(Context context, String dimenName) {
// 反射手机运行的类：android.R.dimen.status_bar_height.
int statusHeight = -1;
try {
Class<?> clazz = Class.forName(“com.android.internal.R$dimen”);
Object object = clazz.newInstance();
String heightStr = clazz.getField(dimenName).get(object).toString();
int height = Integer.parseInt(heightStr);
//dp->px
statusHeight = context.getResources().getDimensionPixelSize(height);
} catch (Exception e) {
e.printStackTrace();
}
return statusHeight;
}

emmm…因为底部导航栏是白色的看起来不明显…，适配结果就是这样。