Difference Between Match_Parent and Fill_Parent

What is the difference between match_parent and fill_parent?

They're the same thing (in API Level 8+). Use match_parent.

FILL_PARENT (renamed MATCH_PARENT in API Level 8 and higher), which means that the view wants to be as big as its parent (minus padding)

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fill_parent: The view should be as big as its parent (minus padding). This constant is deprecated starting from API Level 8 and is replaced by match_parent.

http://developer.android.com/reference/android/view/ViewGroup.LayoutParams.html

difference between fill_parent and match_parent in android

They're the same thing (in API Level 8+). Use match_parent.

fill_parent (renamed MATCH_PARENT in API Level 8 and higher), which means that the view wants to be as big as its parent (minus padding)

fill_parent: The view should be as big as its parent (minus padding). This constant is deprecated starting from API Level 8 and is replaced by match_parent

For Android API 1.6 to 2.1 match_parent will throw you an error, so use fill_parent in these cases. To support backward compatibility, it's better to use fill_parent

I remember that Roman Guy (Android Developer at Google) said, that they have changed the name because "fill_parent" was confusing for developers. As matter of the fact, "fill_parent" does not fill the remaining space (for that you use the weight attribute) but it takes as much space as its layout parent. That's why the new name is "match_parent"

Difference between match-parent and fill-parrent

After API 8, FILL_PARENT was renamed as MATCH_PARENT. So , both are one and the same.

Official doc : http://developer.android.com/reference/android/view/ViewGroup.LayoutParams.htmlenter link description here

What's the difference between fill_parent and wrap_content?

Either attribute can be applied to View's (visual control) horizontal or vertical size. It's used to set a View or Layouts size based on either it's contents or the size of it's parent layout rather than explicitly specifying a dimension.

fill_parent (deprecated and renamed MATCH_PARENT in API Level 8 and higher)

Setting the layout of a widget to fill_parent will force it to expand to take up as much space as is available within the layout element it's been placed in. It's roughly equivalent of setting the dockstyle of a Windows Form Control to Fill.

Setting a top level layout or control to fill_parent will force it to take up the whole screen.

wrap_content

Setting a View's size to wrap_content will force it to expand only far enough to contain the values (or child controls) it contains. For controls -- like text boxes (TextView) or images (ImageView) -- this will wrap the text or image being shown. For layout elements it will resize the layout to fit the controls / layouts added as its children.

It's roughly the equivalent of setting a Windows Form Control's Autosize property to True.

Online Documentation

There's some details in the Android code documentation here.

Is deprecated word the only difference between fill_parent and match_parent

As you said they are exact the same. As Romain Guy said, they have changed the name because "fill_parent" was confusing for developers. As matter of the fact, "fill_parent" does not fill the remaining space (for that you use the weight attribute) but it takes as much space as its layout parent. That's why the new name is "match_parent".

FILL_PARENT and MATCH_PARENT

FILL_PARENT and MATCH_PARENT are same thing, if the version the user is having is 2.2 or higher FILL_PARENT would be replaced by MATCH_PARENT automatically. So it's better to use FILL_PARENT, to support backward compatibility.

There was a blog on Android dev site about this, I hope you can find it, if you want to have more details on this.