Android自定义LinearLayout和膨胀xml

Question

I have an xml layout that when inflated into a View object, the layout displays as expected. However, I created a custom LinearLayout class, and inflate the xml layout when creating an instance of the class by using

LayoutInflater.from(context).inflate(R.layout.icon_item, this, true);

in the constructor. I am not setting any LayoutParams or anything on the custom LinearLayout class, and when I try to display the custom class, it seems there are some weird margins placed that cut off some of the text in the layout inside.

I want to know if there is any way to set the custom LinearLayout so it has no effects on the layout xml, but just acts as an invisible container. I thought setting "attachToRoot" to true when inflating would solve this, but didn't work as expected.

Answer 1

When using inflate(..) with attachToRoot = true, this is the equivalent of physically placing the XML inside the ViewGroup like so:

<LinearLayout ..>
  <TextView .. />
</LinearLayout>

Also meaning that when being measure 'd and laid out by the LinearLayout it will inherit any layout properties imposed in your xml layout you are inflating.

So if you <TextView..> contains android:layout_margin="8dp" or padding for example then your CustomLinearLayout will also layout the view using these Layout properties.

I would post more code if you want me to fix/create a better solution for you.