Android 如何让对话框风格的活动窗口填满屏幕？

How can I get a Dialog style activity window to fill the screen?

提问by Matthias

I am using an activity with the dialog theme set, and I want it to be full screen. I tried all sorts of things, even going through the WindowManager to expand the window to full width and height manually, but nothing works.

我正在使用一个带有对话框主题集的活动，我希望它是全屏的。我尝试了各种方法，甚至通过 WindowManager 手动将窗口扩展到全宽和全高，但没有任何效果。

Apparently, a dialog window (or an activity with the dialog theme) will only expand according to its contents, but even that doesn't always work. For instance, I show a progress bar circle which has width and height set to FILL_PARENT (so does its layout container), but still, the dialog wraps around the much smaller progress bar instead of filling the screen.

显然，对话窗口（或具有对话主题的活动）只会根据其内容展开，但即使如此也并不总是有效。例如，我展示了一个进度条圆圈，它的宽度和高度设置为 FILL_PARENT（它的布局容器也是如此），但对话框仍然环绕在更小的进度条周围，而不是填充屏幕。

There must be a way of displaying something small inside a dialog window but have it expand to full screen size without its content resizing as well?

必须有一种方法可以在对话窗口中显示一些小的东西，但它是否可以扩展到全屏大小而不调整其内容大小？

回答by Matthias

I found the solution:

我找到了解决方案：

In your activity which has the Theme.Dialogstyle set, do this:

在具有Theme.Dialog样式集的活动中，执行以下操作：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.your_layout);

    getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
}

It's important that you call Window.setLayout()afteryou call setContentView(), otherwise it won't work.

调用Window.setLayout()后调用很重要setContentView()，否则将无法工作。

回答by Serhii Nadolynskyi

You may add this values to your style android:windowMinWidthMajor and android:windowMinWidthMinor

您可以将此值添加到您的样式 android:windowMinWidthMajor 和 android:windowMinWidthMinor

<style name="Theme_Dialog" parent="android:Theme.Holo.Dialog">
    ...
    <item name="android:windowMinWidthMajor">97%</item>
    <item name="android:windowMinWidthMinor">97%</item>
</style>

回答by Padma Kumar

I just want to fill only 80% of the screen for that I did like this below

我只想填充屏幕的 80%，因为我在下面这样做了

        DisplayMetrics metrics = getResources().getDisplayMetrics();
        int screenWidth = (int) (metrics.widthPixels * 0.80);

        setContentView(R.layout.mylayout);

        getWindow().setLayout(screenWidth, LayoutParams.WRAP_CONTENT); //set below the setContentview

it works only when I put the getwindow().setLayout... line below the setContentView(..)

它仅在我将 getwindow().setLayout... 行放在 setContentView(..) 下方时才有效

thanks @Matthias

谢谢@马蒂亚斯

回答by Ayan

Wrap your dialog_custom_layout.xmlinto RelativeLayoutinstead of any other layout.That worked for me.

将您的dialog_custom_layout.xml包装到RelativeLayout而不是任何其他布局中。这对我有用。

回答by Rahul Sharma

For DialogThis may helpful for someone. I want a dialog to take full width of screen. searched a lot but nothing found useful. Finally this worked for me:

对于对话这可能对某人有帮助。我想要一个对话框来占据整个屏幕宽度。搜索了很多，但没有发现有用的。最后这对我有用：

mDialog.setContentView(R.layout.my_custom_dialog);
mDialog.getWindow().setBackgroundDrawable(null);

after adding this, my dialog appears in full width of screen.

添加后，我的对话框出现在屏幕的全宽中。

回答by HendraWD

This answer is a workaround for those who use "Theme.AppCompat.Dialog" or any other "Theme.AppCompat.Dialog" descendantslike "Theme.AppCompat.Light.Dialog", "Theme.AppCompat.DayNight.Dialog", etc. I myself has to use AppCompat dialog because i use AppCompatActivity as extends for all my activities. There will be a problem that make the dialog has padding on every sides(top, right, bottom and left) if we use the accepted answer.

对于使用“Theme.AppCompat.Dialog”或任何其他“Theme.AppCompat.Dialog”后代（如“Theme.AppCompat.Light.Dialog”、“Theme.AppCompat.DayNight.Dialog”等）的人，此答案是一种解决方法。我自己必须使用 AppCompat 对话框，因为我使用 AppCompatActivity 作为我所有活动的扩展。如果我们使用接受的答案，将会出现一个问题，使对话框的每一边（顶部、右侧、底部和左侧）都有填充。

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.your_layout);

    getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
}

On your Activity's style, add these code

在您的 Activity 样式中，添加这些代码

<style name="DialogActivityTheme" parent="Theme.AppCompat.Dialog">
    <item name="windowNoTitle">true</item>
    <item name="android:windowBackground">@null</item>
</style>

As you may notice, the problem that generate padding to our dialog is "android:windowBackground", so here i make the window background to null.

正如您可能注意到的，为我们的对话框生成填充的问题是“android:windowBackground”，所以在这里我将窗口背景设为空。

回答by DYS

Matthias' answer is mostly right but it's still not filling the entire screen as it has a small padding on each side (pointed out by @Holmes). In addition to his code, we could fix this by extending Theme.Dialog style and add some attributes like this.

Matthias 的回答大部分是正确的，但它仍然没有填满整个屏幕，因为它的每一侧都有一个小填充（由@Holmes 指出）。除了他的代码之外，我们还可以通过扩展 Theme.Dialog 样式并添加一些这样的属性来解决这个问题。

<style name="MyDialog" parent="@android:style/Theme.Dialog">
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:windowNoTitle">true</item>
</style>

Then we simply declare Activity with theme set to MyDialog:

然后我们简单地声明 Activity ，主题设置为MyDialog：

<activity
    android:name=".FooActivity"
    android:theme="@style/MyDialog" />

回答by roy mathew

Set a minimum width at the top most layout.

在最顶部布局设置最小宽度。

android:minWidth="300dp"

For example:

例如：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"
  xmlns:android="http://schemas.android.com/apk/res/android" android:minWidth="300dp">

<!-- Put remaining contents here -->

</LinearLayout>

回答by Stanojkovic

This would be helpful for someone like me. Create custom dialog style:

这对像我这样的人会有帮助。创建自定义对话框样式：

<style name="MyDialog" parent="Theme.AppCompat.Light.Dialog">
    <item name="windowNoTitle">true</item>
    <item name="android:windowFullscreen">true</item>
    <item name="android:windowIsFloating">false</item>
</style>

In AndroidManifest.xmlfile set theme for wanted activity:

在AndroidManifest.xml所需活动的文件集主题中：

<activity
        android:name=".CustomDialog"
        ...
        android:theme="@style/MyDialog"/>

That is all, no need to call methods programaticaly.

就是这样，不需要以编程方式调用方法。

回答by Makvin

In your manifest file where our activity is defined

在您定义我们活动的清单文件中

<activity
        android:name=".YourPopUpActivity"
        android:theme="@android:style/Theme.Holo.Dialog" >
    </activity>

without action bar

没有操作栏

<activity android:name=".YourPopUpActivity"
            android:theme="@android:style/Theme.Holo.Dialog.NoActionBar"/>