Android 底部弹出公共类

public abstract class BaseBottomDialog extends DialogFragment {
    private static final String TAG = "dialog";

    private static final float DEFAULT_DIM = 0.2f;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setStyle(DialogFragment.STYLE_NO_TITLE, R.style.BottomDialog);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        getDialog().getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); //  解决虚拟按键遮挡的问题
        getDialog().setCanceledOnTouchOutside(getCancelOutside());

        View v = inflater.inflate(getLayoutRes(), container, false);
        bindView(v);
        return v;
    }

    @LayoutRes
    public abstract int getLayoutRes();

    public abstract void bindView(View v);

    @Override
    public void onStart() {
        super.onStart();

        Window window = getDialog().getWindow();
        WindowManager.LayoutParams params = window.getAttributes();

        params.dimAmount = getDimAmount();
        params.width = WindowManager.LayoutParams.MATCH_PARENT;
        if (getHeight() > 0) {
            params.height = getHeight();
        } else {
            //params.height = WindowManager.LayoutParams.WRAP_CONTENT;
            // params.height = WindowManager.LayoutParams.MATCH_PARENT;
            params.height = getScreenHeight() - getStatusBarHeight();
        }
        params.gravity = Gravity.BOTTOM;

        window.setAttributes(params);
    }

    public int getHeight() {
        return -1;
    }

    public float getDimAmount() {
        return DEFAULT_DIM;
    }

    public boolean getCancelOutside() {
        return true;
    }

    public String getFragmentTag() {
        return TAG;
    }

    public void show(FragmentManager fragmentManager) {
        show(fragmentManager, getFragmentTag());
    }

    /**
     * 获取屏幕高度
     *
     * @return 屏幕高度
     */
    public int getScreenHeight() {
        WindowManager wm = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
        return wm.getDefaultDisplay().getHeight();
    }


    /**
     * 获取状态栏高度
     *
     * @return 状态栏高度
     */
    public int getStatusBarHeight() {
        int result = 0;
        Rect rectangle= new Rect();
        getDialog().getWindow().getDecorView().getWindowVisibleDisplayFrame(rectangle);
        //高度为rectangle.top-0仍为rectangle.top
        Log.e("WangJ", "状态栏-方法3:" + rectangle.top);
        return result;

    }
}