官方高度是24dp 正如谷歌在Android设计网页上正式声明的那样。

感谢@Niklas +1，这是正确的方法。

public class MyActivity extends Activity implements android.support.v4.View.OnApplyWindowInsetsListener {

    Rect windowInsets;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.my_activity);

        View rootview = findViewById(android.R.id.content);

        android.support.v4.View.ViewCompat.setOnApplyWindowInsetsListener(rootview, this);
    }

    android.support.v4.View.WindowInsetsCompat android.support.v4.View.OnApplyWindowInsetsListener.OnApplyWindowInsets(View v, android.support.v4.View.WindowInsetsCompat insets)
    {
        windowInsets = new Rect();
        windowInsets.set(insets.getSystemWindowInsetLeft(), insets.getSystemWindowInsetTop(), insets.getSystemWindowInsetRight(), insets.getSystemWindowInsetBottom());
        //StatusBarHeight = insets.getSystemWindowInsetTop();

        //Refresh/Adjust view accordingly

        return insets;
    }
}

请原谅，如果代码不是100%正确，从Xamarin c#转换，但这是它的公正。工作与缺口等。

240x320 - 20px 320x480 - 25px 480x800+ - 38px

上面的答案对某些人不起作用的原因是，在视图准备好渲染之前，您无法获得视图的维度。使用一个OnGlobalLayoutListener来获得所说的维度，当你实际上可以:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    final ViewGroup decorView = (ViewGroup) this.getWindow().getDecorView();
    decorView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            if (Build.VERSION.SDK_INT >= 16) {
                decorView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
            } else {
                // Nice one, Google
                decorView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
            }
            Rect rect = new Rect();
            decorView.getWindowVisibleDisplayFrame(rect);
            rect.top; // This is the height of the status bar
        }
    }
}

这是最可靠的方法。

这个问题最近与我有关，因为我的Pixel 3XL上的缺口。我真的很喜欢android开发者的解决方案，但我希望能够随心所欲地获得状态栏的高度，因为这对于我需要播放的全屏动画是特别必要的。下面的函数启用了一个可靠的查询:

private val DEFAULT_INSET = 96
fun getInsets(view: View?): Int {
     var inset = DEFAULT_INSET
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {//Safe because only P supports notches
          inset = view?.rootWindowInsets?.stableInsetTop ?: DEFAULT_INSET
     }
     return inset
}

fun blurView(rootView: View?, a: SpacesActivity?) {
    val screenBitmap = getBitmapFromView(rootView!!)
    val heightDifference = getInsets(rootView)
    val croppedMap = Bitmap.createBitmap(
                    screenBitmap, 0, heightDifference,
                    screenBitmap.width,
                    screenBitmap.height - heightDifference)
    val blurredScreen = blurBitmap(croppedMap)
    if (blurredScreen != null) {
         val myDrawable = BitmapDrawable(a!!.resources, blurredScreen)
         a.errorHudFrameLayout?.background = myDrawable
         a.appBarLayout?.visibility = View.INVISIBLE
   }
}

然后在活动课上

fun blurView() {
    this.runOnUiThread {
        Helper.blurView(this)
    }
}

您当然希望将活动的弱引用传递给静态Helper类方法参数，但为了简洁起见，我在本例中没有这样做。由于同样的原因，blurbitmap和errorHudFrameLayout被省略了，因为它们并不直接与获取状态栏的高度有关。

试试这个:

    Rect rect = new Rect();
    Window win = this.getWindow();
    win.getDecorView().getWindowVisibleDisplayFrame(rect);
    int statusBarHeight = rect.top;
    int contentViewTop = win.findViewById(Window.ID_ANDROID_CONTENT).getTop();
    int titleBarHeight = contentViewTop - statusBarHeight;
    Log.d("ID-ANDROID-CONTENT", "titleBarHeight = " + titleBarHeight );

它没有为我工作在onCreate方法的活动，但当我把它放在onClickListener，并给我一个25的测量