解决Dialog 不铺满屏幕问题

 hbDialog = new AlertDialog.Builder(this, R.style.Dialog_Fullscreen)
                    .setView(view).create();
            hbDialog.setCanceledOnTouchOutside(true);


            Window win = hbDialog.getWindow();
            win.setGravity(Gravity.BOTTOM);
            win.setWindowAnimations(R.style.dialog_anim);
            win.getDecorView().setPadding(0, 0, 0, 0);
            WindowManager.LayoutParams lp = win.getAttributes();
            lp.width = WindowManager.LayoutParams.MATCH_PARENT;
            lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
            win.setAttributes(lp);

对应的 style:

 <style name="Dialog_Fullscreen" parent="@style/Theme.AppCompat.Dialog">
        <!--<item name="android:windowFullscreen">false</item>-->
        <item name="android:windowNoTitle">false</item>
        <item name="android:windowFullscreen">true</item>

        <!--<item name="android:windowCloseOnTouchOutside">true</item>-->
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:backgroundDimAmount">0.8</item>

        <!--//退出时的动画-->

    </style>

    <style name="dialog_anim">
        <item name="@android:windowEnterAnimation">@anim/bottom_dialog_enter</item>
        <!--//进入时的动画-->
        <item name="@android:windowExitAnimation">@anim/bottom_dialog_out</item>
    </style>

对应的 动画：

进入：
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <!--%p指相对于父容器-->
    <translate
        android:duration="300"
        android:fromYDelta="100%p" />
</set>

弹出：
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="300"
        android:toYDelta="100%p" />
</set>