Android 弹窗口宽度设置

两种方式：
1常用的Dialog
`View dialogview =LayoutInflater.from(activity).inflate(R.layout.customsharelayout, null);

shareDialog = new Dialog(activity, R.style.dialog_untran);
shareDialog.setContentView(dialogview);
Window window = shareDialog.getWindow();
WindowManager.LayoutParams windowparams = window.getAttributes();
window.setGravity(Gravity.BOTTOM);
Rect rect = new Rect();
View view1 = window.getDecorView();
view1.getWindowVisibleDisplayFrame(rect);
windowparams.height = DensityUtil.dip2px(activity, 155);
windowparams.width = SettingUtil.getDisplaywidthPixels();
window.setWindowAnimations(R.style.AnimationDialog);
window.setBackgroundDrawableResource(android.R.color.transparent);
window.setAttributes( (android.view.WindowManager.LayoutParams) windowparams);
shareDialog.show(); `

2.Activity伪装成一个弹出窗口

<activity
            android:name=".activitys.home.PopupWindow"
            android:screenOrientation="portrait"
            android:theme="@style/MyDialogStyleBottom" />

<style name="MyDialogStyleBottom" parent="Theme.AppCompat.Dialog">
        <item name="android:windowAnimationStyle">@style/AnimBottom</item>
        <item name="android:windowFrame">@null</item>
        <!-- 边框 -->
       <item name="android:windowIsFloating">true</item>
        <!--是否浮现在activity之上-->
        <item name="android:windowIsTranslucent">true</item>
        <!-- 半透明 -->
        <item name="android:windowNoTitle">true</item>
        <!-- 无标题 -->
        <item name="android:windowBackground">@android:color/transparent</item>
        <!-- 背景透明 -->
        <item name="android:backgroundDimEnabled">true</item>
        <!-- 模糊 -->
        <item name="android:backgroundDimAmount">0.8</item>
        <item name="android:windowFullscreen">true</item>
    </style>

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

push_bottom_in.xml

<!-- 上下滑入式 -->

<set xmlns:android="http://schemas.android.com/apk/res/android" >
    <translate
        android:duration="200"
        android:fromYDelta="100%p"
        android:toYDelta="0"
        />
</set>

push_bottom_out.xml

<!-- 上下滑入式 -->
<set xmlns:android="http://schemas.android.com/apk/res/android" >
    <translate
        android:duration="200"
        android:fromYDelta="0"
        android:toYDelta="50%p" />
</set>

在Activity中做如下设置，否则宽度不会占满屏

**getWindow().setLayout(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);**

效果：