将活动显示为对话框时如何自定义宽度和高度

How to customize the width and height when show an Activity as a Dialog(将活动显示为对话框时如何自定义宽度和高度)

问题描述

如果我定义了一个活动:

If I have defined a Activity:

public class DialogActivity extends Activity{

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(dialog_activity.xml);
    }


}

我想像对话框一样显示上面的活动，所以在 AndroidManifest.xml 文件中，我像下面这样声明这个活动:

I would like to display the above activity like a dialog, so in the AndroidManifest.xml file, I declare this activity like below:

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

此时一切正常，我的 DialogActivity 显示为对话框.

Everything is fine at this point, my DialogActivity showed as a dialog.

问题是如何自定义DialogActivity的宽高，让它更像一个小对话框?(目前默认占据大部分屏幕)

The problem is How to customize the width and height of the DialogActivity to make it more like a small dialog? (Currently it occupies most of the screen by default)

----------------更新-----------------------

我定义了一个自定义主题，如下所示:

I defined a custom theme like below:

<style name="myDialog" parent="@android:style/Theme.Dialog">
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowContentOverlay">@null</item>

        <item name="android:width">100dip</item> 
        <item name="android:height">100dip</item>

</style>

然后，将 AndroidManifest.xml 中的 DialogActivity 声明为.

<activity android:name=".DialogActivity" android:theme="@style/myDialog"/>

我的 DialogActivity 现在甚至占据了整个屏幕:( . width 和 height 定义:

My DialogActivity now even occupies the whole screen:( . The width and height definition:

<item name="android:width">100dip</item>

在主题中没有任何效果，为什么?

in the theme do not take any effect, why?

推荐答案

我终于找到了一种自定义 DialogActivity 大小的方法.

I finally figured out one way to customize the size of my DialogActivity.

在DialogActivity的onCreate()方法里面，添加如下代码:

That's inside the onCreate() method of DialogActivity, add the following code:

WindowManager.LayoutParams params = getWindow().getAttributes();  
params.x = -20;  
params.height = 100;  
params.width = 550;  
params.y = -10;  

this.getWindow().setAttributes(params); 

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