android如何获取屏幕Physical size

手机更改分辨率后，wm size出现以下两个
Physical size: 1440x2560
Override size: 1080x1920
截图取的是Override size就有ｂｕｇ，截不全
想获取Physical size怎么获取，试了
Rect crop；width = crop.width();　和
mDisplayMetrics.widthPixels
取到都还是Override size，怎么才能取到当前的Physical size

private int mWidth;
private int mHeight;

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public void getDisplayMetrics() {
    WindowManager wm = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
    Display display = wm.getDefaultDisplay();
    int API_LEVEL = android.os.Build.VERSION.SDK_INT;
    // 方法1
    DisplayMetrics displayMetrics = new DisplayMetrics();
    if (API_LEVEL >= 17) {
        display.getRealMetrics(displayMetrics);
    } else {
        display.getMetrics(displayMetrics);
    }
    mWidth = displayMetrics.widthPixels;
    mHeight = displayMetrics.heightPixels;

    // 方法2
    Point outSize = new Point();
    if (API_LEVEL >= 17) {
        display.getRealSize(outSize);
    } else {
        display.getSize(outSize);
    }
    mWidth = outSize.x;
    mHeight = outSize.y;

    // 方法3
    mWidth = mContext.getResources().getDisplayMetrics().widthPixels;
    mHeight = mContext.getResources().getDisplayMetrics().heightPixels;
}

最后获取到了吗