您可以使用以下方法获得高度大小：

getResources().getDisplayMetrics().heightPixels;

宽度大小使用

getResources().getDisplayMetrics().widthPixels; 

科特林

fun getScreenHeight(activity: Activity): Int {
    val metrics = DisplayMetrics()
    activity.windowManager.defaultDisplay.getMetrics(metrics)
    return metrics.heightPixels
}

fun getScreenWidth(activity: Activity): Int {
    val metrics = DisplayMetrics()
    activity.windowManager.defaultDisplay.getMetrics(metrics)
    return metrics.widthPixels
}

我尝试了所有可能的“解决方案”，但都失败了，我注意到Elliott Hughes的“Dalvik Explorer”应用程序在任何Android设备/操作系统版本上都始终显示正确的维度。我最后看了他的开源项目，可以在这里找到：https://code.google.com/p/enh/

以下是所有相关代码：

WindowManager w = activity.getWindowManager();
Display d = w.getDefaultDisplay();
DisplayMetrics metrics = new DisplayMetrics();
d.getMetrics(metrics);
// since SDK_INT = 1;
widthPixels = metrics.widthPixels;
heightPixels = metrics.heightPixels;
try {
    // used when 17 > SDK_INT >= 14; includes window decorations (statusbar bar/menu bar)
    widthPixels = (Integer) Display.class.getMethod("getRawWidth").invoke(d);
    heightPixels = (Integer) Display.class.getMethod("getRawHeight").invoke(d);
} catch (Exception ignored) {
}
try {
    // used when SDK_INT >= 17; includes window decorations (statusbar bar/menu bar)
    Point realSize = new Point();
    Display.class.getMethod("getRealSize", Point.class).invoke(d, realSize);
    widthPixels = realSize.x;
    heightPixels = realSize.y;
} catch (Exception ignored) {
}

EDIT：略有改进的版本（避免在不受支持的OS版本上触发异常）：

WindowManager w = activity.getWindowManager();
Display d = w.getDefaultDisplay();
DisplayMetrics metrics = new DisplayMetrics();
d.getMetrics(metrics);
// since SDK_INT = 1;
widthPixels = metrics.widthPixels;
heightPixels = metrics.heightPixels;
// includes window decorations (statusbar bar/menu bar)
if (Build.VERSION.SDK_INT >= 14 && Build.VERSION.SDK_INT < 17)
try {
    widthPixels = (Integer) Display.class.getMethod("getRawWidth").invoke(d);
    heightPixels = (Integer) Display.class.getMethod("getRawHeight").invoke(d);
} catch (Exception ignored) {
}
// includes window decorations (statusbar bar/menu bar)
if (Build.VERSION.SDK_INT >= 17)
try {
    Point realSize = new Point();
    Display.class.getMethod("getRealSize", Point.class).invoke(d, realSize);
    widthPixels = realSize.x;
    heightPixels = realSize.y;
} catch (Exception ignored) {
}

DisplayMetrics dm = getResources().getDisplayMetrics();
float fwidth = dm.density * dm.widthPixels;
float fheight = dm.density * dm.heightPixels;

如果getSize由于您的minSDKVersion而给您带来错误，并且您不想使用不推荐的方法（getWidth&getHeight），那么getMetrics解决方案最初是由Balaji.K.于2011年发布的。Nik添加了一条注释，解释getDisplayMetrics也考虑了状态栏大小。

其他一些注释指的是乘以比例（密度），以获得尺寸的精确浮动值。在Android v2.2（API 8）和v4.0中测试，结果良好，无错误/警告。

现在在Api 30级别上，应该这样做

final WindowMetrics metrics = windowManager.getCurrentWindowMetrics();
 // Gets all excluding insets
 final WindowInsets windowInsets = metrics.getWindowInsets();
 Insets insets = windowInsets.getInsetsIgnoreVisibility(WindowInsets.Type.navigationBars()
         | WindowInsets.Type.displayCutout());

 int insetsWidth = insets.right + insets.left;
 int insetsHeight = insets.top + insets.bottom;

 // Legacy size that Display#getSize reports
 final Rect bounds = metrics.getBounds();
 final Size legacySize = new Size(bounds.width() - insetsWidth,
         bounds.height() - insetsHeight);

在活动的onCreate中，有时需要知道布局可用空间的精确尺寸。经过一番思考，我想出了这种方法。

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        startActivityForResult(new Intent(this, Measure.class), 1);
        // Return without setting the layout, that will be done in onActivityResult.
    }

    @Override
    protected void onActivityResult (int requestCode, int resultCode, Intent data) {
        // Probably can never happen, but just in case.
        if (resultCode == RESULT_CANCELED) {
            finish();
            return;
        }
        int width = data.getIntExtra("Width", -1);
        // Width is now set to the precise available width, and a layout can now be created.            ...
    }
}

public final class Measure extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
       // Create a LinearLayout with a MeasureFrameLayout in it.
        // Just putting a subclass of LinearLayout in works fine, but to future proof things, I do it this way.
        LinearLayout linearLayout = new LinearLayout(this);
        LinearLayout.LayoutParams matchParent = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
        MeasureFrameLayout measureFrameLayout = new MeasureFrameLayout(this);
        measureFrameLayout.setLayoutParams(matchParent);
        linearLayout.addView(measureFrameLayout);
        this.addContentView(linearLayout, matchParent);
        // measureFrameLayout will now request this second activity to finish, sending back the width.
    }

    class MeasureFrameLayout extends FrameLayout {
        boolean finished = false;
        public MeasureFrameLayout(Context context) {
            super(context);
        }

        @SuppressLint("DrawAllocation")
        @Override
        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
            if (finished) {
                return;
            }
            finished = true;
            // Send the width back as the result.
            Intent data = new Intent().putExtra("Width", MeasureSpec.getSize(widthMeasureSpec));
            Measure.this.setResult(Activity.RESULT_OK, data);
            // Tell this activity to finish, so the result is passed back.
            Measure.this.finish();
        }
    }
}

如果出于某种原因，您不想将另一个活动添加到Android清单中，可以这样做：

public class MainActivity extends Activity {
    static Activity measuringActivity;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        Bundle extras = getIntent().getExtras();
        if (extras == null) {
            extras = new Bundle();
        }
        int width = extras.getInt("Width", -2);
        if (width == -2) {
            // First time in, just start another copy of this activity.
            extras.putInt("Width", -1);
            startActivityForResult(new Intent(this, MainActivity.class).putExtras(extras), 1);
            // Return without setting the layout, that will be done in onActivityResult.
            return;
        }
        if (width == -1) {
            // Second time in, here is where the measurement takes place.
            // Create a LinearLayout with a MeasureFrameLayout in it.
            // Just putting a subclass of LinearLayout in works fine, but to future proof things, I do it this way.
            LinearLayout linearLayout = new LinearLayout(measuringActivity = this);
            LinearLayout.LayoutParams matchParent = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
            MeasureFrameLayout measureFrameLayout = new MeasureFrameLayout(this);
            measureFrameLayout.setLayoutParams(matchParent);
            linearLayout.addView(measureFrameLayout);
            this.addContentView(linearLayout, matchParent);
            // measureFrameLayout will now request this second activity to finish, sending back the width.
        }
    }

    @Override
    protected void onActivityResult (int requestCode, int resultCode, Intent data) {
        // Probably can never happen, but just in case.
        if (resultCode == RESULT_CANCELED) {
            finish();
            return;
        }
        int width = data.getIntExtra("Width", -3);
        // Width is now set to the precise available width, and a layout can now be created. 
        ...
    }

class MeasureFrameLayout extends FrameLayout {
    boolean finished = false;
    public MeasureFrameLayout(Context context) {
        super(context);
    }

    @SuppressLint("DrawAllocation")
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        if (finished) {
            return;
        }
        finished = true;
        // Send the width back as the result.
        Intent data = new Intent().putExtra("Width", MeasureSpec.getSize(widthMeasureSpec));
        MainActivity.measuringActivity.setResult(Activity.RESULT_OK, data);
        // Tell the (second) activity to finish.
        MainActivity.measuringActivity.finish();
    }
}