底部边距或填充在 android 上的 xml 中的相对布局中不起作用
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bottom margin or padding doesn't work in relative layout in xml on android
提问by Atma
I have a RelativeLayoutfor a row that goes inside a ListView. The row looks like,
我有一个RelativeLayout在 a 里面的一行ListView。该行看起来像，
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/relativeLayout1"
android:layout_width="wrap_content"
android:layout_height="fill_parent">
<ImageView
android:id="@+id/placeDetailIcon_Img"
android:layout_height="50dp"
android:layout_width="50dp"
android:layout_alignParentLeft="true"
android:paddingBottom="20dp"
android:paddingTop="20dp"
android:paddingLeft="20dp"
android:paddingRight="20dp"/>
</RelativeLayout>
I also tried it with margin:
我也用保证金尝试过：
<ImageView
android:layout_height="50dp"
android:layout_width="50dp"
android:id="@+id/placeDetailIcon_Img"
android:layout_alignParentLeft="true"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:layout_marginBottom="10dp">
Neither apply the margin or padding around the ImageView. How do create this type of spacing?
既不应用边距或填充ImageView. 如何创建这种类型的间距？
采纳答案by Android Stack
you can use this its work with me :
你可以用它和我一起工作：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/relativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:id="@+id/imageView1"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="15dp"
android:layout_marginTop="15dp" />
</RelativeLayout>
hope this helps.
希望这可以帮助。
回答by bkurzius
For anyone else who is looking for a solution to this - from the docs:
对于正在寻找解决方案的任何其他人 - 从文档中：
http://developer.android.com/reference/android/widget/RelativeLayout.html
http://developer.android.com/reference/android/widget/RelativeLayout.html
"Note that you cannot have a circular dependency between the size of the RelativeLayout and the position of its children. For example, you cannot have a RelativeLayout whose height is set to WRAP_CONTENT and a child set to ALIGN_PARENT_BOTTOM."
“请注意，RelativeLayout 的大小与其子项的位置之间不能有循环依赖关系。例如，不能有一个高度设置为 WRAP_CONTENT 且子项设置为 ALIGN_PARENT_BOTTOM 的 RelativeLayout。”
It seems also that there is some odd behavior if you put a relativeView inside of a scrollview.
如果将 relativeView 放在滚动视图中，似乎也有一些奇怪的行为。
In my case I had set the relativeLayout to wrap_content and then tried to add marginBottom to an ImageView with the ALIGN_PARENT_BOTTOM attribute. When I set the height explicitly it finally worked.
就我而言，我已将 relativeLayout 设置为 wrap_content，然后尝试将 marginBottom 添加到具有 ALIGN_PARENT_BOTTOM 属性的 ImageView。当我明确设置高度时，它终于起作用了。
回答by amp
I suggest you to use LinearLayout... Or you can try to remove the attribute: android:layout_alignParentLeft="true"
我建议您使用 LinearLayout ... 或者您可以尝试删除该属性： android:layout_alignParentLeft="true"
If you want to center the view in a RelativeLayout you can use:
如果要将视图居中放置在相对布局中，可以使用：
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
