android dialog做从下到上menu

@Override
    public void onClick(View v) {
        // Dialog d = createDialog(this, R.style.custom_dialog);
        // d.show();
        Display display = getWindowManager().getDefaultDisplay();

        LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        LinearLayout dialogView = (LinearLayout) inflater.inflate(R.layout.dialog_layout, null);
        dialogView.setMinimumWidth(display.getWidth());

        AlertDialog dialog = new AlertDialog.Builder(this).create();
        dialog.setCancelable(true);
        dialog.setCanceledOnTouchOutside(true);

        Window window = dialog.getWindow();
        window.setGravity(Gravity.BOTTOM); // 此处可以设置dialog显示的位置
        window.setWindowAnimations(R.style.dialog_animation); // 添加动画
        dialog.show();
        window.setContentView(dialogView);
        System.out.println(" lp.width = " + window.getDecorView().getWidth());
    }

layout.xml

<LinearLayout xmlns:android=""
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/bottom_menu_bg"
    android:padding="10dp"
    android:orientation="vertical" >

    <Button
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="button"/>

    <Button
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="button"/>

</LinearLayout>

animation

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="" >

    <translate
        android:duration="200"
        android:fromYDelta="100%p"
        android:toYDelta="0" />

    <alpha
        android:duration="200"
        android:fromAlpha="0.0"
        android:toAlpha="1.0" />

</set>

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="" >

    <translate
        android:duration="200"
        android:fromYDelta="0"
        android:toYDelta="50%p" />

    <alpha
        android:duration="200"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" />

</set>

animation style

<style name="dialog_animation" parent="@android:style/Animation.Dialog">
        <item name="android:windowEnterAnimation">@anim/push_bottom_in</item>
        <item name="android:windowExitAnimation">@anim/push_bottom_out</item>
    </style>