如何防止输入的文本大小改变Edittext的宽度？

Question

I have two EditText as follows:

 <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:weightSum="1" android:orientation="horizontal"> <EditText android:id="@+id/edtTxtNameReg" android:layout_width="wrap_content" android:layout_height="wrap_content" android:maxLines="1" android:inputType="text" android:layout_weight="0.5" android:hint="Name"/> <EditText android:id="@+id/edtTxtSurNameReg" android:layout_width="wrap_content" android:layout_height="wrap_content" android:maxLines="1" android:inputType="text" android:layout_weight="0.5" android:hint="Surname"/> </LinearLayout> 

As I write in edtTxtNameReg, its width increases and the width of edtTxtSurNameReg decreases.

Is there a way to keep the width of edtTxtNameReg constant and the text scrolling to the left?

Thanks

Answer 1

Use android:layout_width="0dp" for both EditText and the width will not vary with the content

For LinearLayout when android:layout_weight is used the width for horizontal orientation or the height for vertical must be ="0dp"

Answer 2

Most of what Tonteria24 said is accurate, but not this part:

For LinearLayout when android:layout_weight is used the width for horizontal orientation or the height for vertical must be ="0dp"

The way layout_weight in LinearLayout works is:

1. Each child is given as much space as it asks for
2. The extra space is divided based on the ratio of weights for each child

It is very common to give all views in the LinearLayout a size of 0dp and equal weights, or to give exactly one view a size of 0dp and weight of 1 . This makes sense because it basically skips my first point above (the child asks for 0 width or height) and then divides the space up evenly.

However, combining wrap_content and layout_weight is perfectly valid.

But , it will cause different behavior. First the LinearLayout will give the first EditText enough width to wrap its content, then it will (try to) give the second EditText enough width to wrap its content, and then it will divide any extra space between the two views.

The result? As the width of the first EditText 's contents grows, the "extra" space left over to divide shrinks. The first EditText will eventually grow to fill the entire LinearLayout if you enter enough text.

So that's why setting its width to 0dp solves it for you. It stops the growing behavior. But there may be another time when you want to use wrap_content and layout_weight together, and that's perfectly fine.