Popup（使用PopupWindow或Dialog）填充屏幕的宽度，没有明显的原因 [英] Popup (using PopupWindow or Dialog) fills the width of the screen for no apparent reason

问题描述

我试图让一个弹出窗口行为！ =）

问题是弹出窗口填充整个屏幕的宽度，即使布局清楚地表示它应该是wrap_content。如果我使用Dialog或PopupWindow，这并不重要。

首先，弹出窗口的XML布局，popup_message.xml：

 <？xml version =1.0encoding =utf-8？> 
< LinearLayout xmlns：android =http://schemas.android.com/apk/res/android
 android：layout_width =wrap_content
 android：layout_height =match_parent 
 android：layout_margin =20dp
 android：background =@ android：color / transparent
 android：orientation =vertical> 
 
< LinearLayout 
 android：layout_width =match_parent
 android：layout_height =40dp
 android：orientation =horizo​​ntal
 android： layout_gravity =center> 
 
< TextView 
 android：layout_width =match_parent
 android：layout_height =fill_parent
 android：layout_gravity =center
 android： background =@ android：color / transparent
 android：gravity =center_vertical | center_horizo​​ntal
 android：orientation =horizo​​ntal
 android：paddingLeft =10dp
 android ：text =@ string / new_message
 android：textColor =＃000000
 android：textAllCaps =true> 
 
< / TextView> 
< / LinearLayout> 
 
< RelativeLayout 
 android：layout_width =wrap_content
 android：layout_height =wrap_content
 android：padding =15dp
 android： background =＃ffffff
 android：gravity =center_horizo​​ntal
 android：orientation =vertical> 
 
< TextView 
 android：id =@ + id / popup_message_textView
 android：layout_width =wrap_content
 android：layout_height =wrap_content
 android：textAppearance =？android：attr / textAppearanceMedium
 android：textCursorDrawable =@ null> 
< / TextView> 
 
< Button 
 android：id =@ + id / jobview_pickup_start_submit
 android：layout_width =fill_parent
 android：layout_height =35dp
 android：layout_below =@ + id / popup_message_textView
 android：layout_gravity =center_vertical | center_horizo​​ntal
 android：layout_marginBottom =15dp
 android：layout_marginTop =15dp
 android：gravity =center_horizo​​ntal
 android：text =Confirm
 android：textColor =＃000000/> 
< / RelativeLayout> 
< / LinearLayout> 
  

我正在使用的代码：

  LayoutInflater inflater =（LayoutInflater）getSystemService（Context.LAYOUT_INFLATER_SERVICE）; 
查看输入= inflater.inflate（R.layout.popup_message，null）; 
 PopupWindow pw = new PopupWindow（input，LayoutParams.WRAP_CONTENT，LayoutParams.WRAP_CONTENT，true）; 
查看v = findViewById（R.id.main_deviceInfoBar）; 
 pw.showAtLocation（v，Gravity.CENTER，0，0）; 
  

我也尝试过：

对话框dialogManualStart = new Dialog（MainActivity.this）;
dialogManualStart.getWindow（）。setBackgroundDrawableResource（R.color.transparent）;
dialogManualStart.requestWindowFeature（MainActivity.this.getWindow（）。FEATURE_NO_TITLE）;
dialogManualStart.setContentView（input）;
dialogManualStart.show（）;

总是，无论我使用什么代码，看起来像这样：

您可以看到，它总是填补屏幕的宽度。

问题：有谁可以告诉我为什么？

========编辑1 =============

我更改了按钮到wrap_content（根据Boogers的建议），然后看起来像这样：

这是非常奇怪的行为，而不是我的预期。

如果我将其更改为match_parent，则返回full width，即从左到右扩展。

解决方案

这是您的问题：

 < Button 
 android：id =@ + id / jobview_pickup_start_submit
更改为fill_parent到wrap_content或match_parent
 
I am trying to get a popup to behave! =)

The problem is that the popup "fills the width" of the entire screen, even though the layout clearly says that it should "wrap_content". It doesnt matter if I use Dialog or PopupWindow. 

First, the XML layout of the popup, popup_message.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_margin="20dp"
    android:background="@android:color/transparent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:orientation="horizontal"
        android:layout_gravity="center" >

        <TextView
            android:layout_width="match_parent"
            android:layout_height="fill_parent"
            android:layout_gravity="center"
            android:background="@android:color/transparent"
            android:gravity="center_vertical|center_horizontal"
            android:orientation="horizontal"
            android:paddingLeft="10dp"
            android:text="@string/new_message"
            android:textColor="#000000"
            android:textAllCaps="true" >

        </TextView>
    </LinearLayout>

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="15dp"
        android:background="#ffffff"
        android:gravity="center_horizontal"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/popup_message_textView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:textCursorDrawable="@null" >
        </TextView>

        <Button
            android:id="@+id/jobview_pickup_start_submit"
            android:layout_width="fill_parent"
            android:layout_height="35dp"
            android:layout_below="@+id/popup_message_textView"
            android:layout_gravity="center_vertical|center_horizontal"
            android:layout_marginBottom="15dp"
            android:layout_marginTop="15dp"
            android:gravity="center_horizontal"
            android:text="Confirm"
            android:textColor="#000000" />
    </RelativeLayout>
</LinearLayout>
And the code I am using:
LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View input = inflater.inflate(R.layout.popup_message, null);
PopupWindow pw = new PopupWindow(input, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, true);
View v = findViewById(R.id.main_deviceInfoBar);
pw.showAtLocation(v, Gravity.CENTER, 0, 0);
I have also tried this:

Dialog dialogManualStart = new Dialog(MainActivity.this);
dialogManualStart.getWindow().setBackgroundDrawableResource(R.color.transparent);
dialogManualStart.requestWindowFeature(MainActivity.this.getWindow().FEATURE_NO_TITLE);
dialogManualStart.setContentView(input);
dialogManualStart.show();

And it always, no matter what code I use, looks like this:



As you can see, its always filling the width of the screen.

Question: Can anyone tell me why?

======== EDIT 1 =============

I changed the Button to "wrap_content" (according to Boogers suggestion), and then it looks like this:



This is very strange behaviour, not what I expected.

If I change it to "match_parent", its back to "full width", ie it extends all the way from left to right.
解决方案
This is your problem:
<Button
            android:id="@+id/jobview_pickup_start_submit"
            android:layout_width="fill_parent"
...
Change that from "fill_parent" to "wrap_content" or "match_parent"

                        
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