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I need to have a LinearLayout inside a SrollView and that LinearLayout must have a margin from the ScrollView. At first, the only way I could think of to solve that issue was having a LinearLayout inside another LinearLayout with the margins set on the this last layout. They wouldn't work if they were set in the outer LinearLayout.
Example:
<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:fillViewport="true" android:background="@color/layout_color_green"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:background="@color/layout_color_yellow"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_margin="10dp" android:orientation="vertical" android:background="@color/layout_color_blue"> </LinearLayout> </LinearLayout> </ScrollView> 
My question is: Why do I need to do this?
If I had only one LinearLayout there would be no margins...
Example:
<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:fillViewport="true" android:background="@color/layout_color_green"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_margin="10dp" android:orientation="vertical" android:background="@color/layout_color_blue"> </LinearLayout> </ScrollView> 
Then, searching for some similar issue, I found a few layouts which gave me the idea of using padding in the ScrollView instead of margin in the LinearLayout. This also solves my problem and I don't need a LinearLayout inside another one. It's a more elegant solution.
Still, I would like to understand why the simple margin inside the LinearLayout doesn't work when inside a ScrollView. Because it does work fine if it's not inside a ScrollView.
Anyone knows why?
945
Here in this example of Linear Layout inside ScrollView we create a custom layout for user registration form using different views(TextView, EditText etc). After creating different views we enclose them inside Linear Layout and then we enclose the whole layout in ScrollView to make all the element or views scrollable.
When adding a LinearLayout inside a ScrollView , use match_parent for the LinearLayout android:layout_width attribute to match the width of the parent ScrollView , and use wrap_content for the LinearLayout android:layout_height attribute to make it only large enough to enclose its contents.
In Android, a ScrollView is a view group that is used to make vertically scrollable views. A scroll view contains a single direct child only. In order to place multiple views in the scroll view, one needs to make a view group(like LinearLayout) as a direct child and then we can define many views inside it.
I digged a little bit into the source code:
ScrollView extends FrameLayout. This one has some margin issues itself and ScrollView is not even trying to solve that. The margins are basically ignored while measuaring.
But in the end it doesn't matter since you should be able to define a padding on the ScrollView itself (it's an affirmation, didn't try that). There should be no need for margin for a single child view.
183
Hello Knickedi and Ricardo Amaral,
Though this answer is marked as solved but I want to put some lights on the issue.
As Knickedi said, ScrollView extends FrameLayout.
So My answer is that You can set the layout_gravity of LinearLayout within scrollView and then layout_margin will work in LinearLayout as case with linearLayout within FrameLayout.
I had same issue and I've applied this and it worked for me. :)
Example :
<ScrollView android:layout_width="fill_parent" android:layout_height="fill_parent"> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_gravity="top" android:layout_marginTop="30dp" android:orientation="vertical" > </ScrollView> If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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