How to decrease the size of the text in a Listview?

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I would like to know how to shorten or increase the text of ListView.
In the TextView there is the property android:textsize="15";, which property would be equivalent to textsize in the ListView?
I have a lot of information to put in it and so put one textsize smaller would solve my problem .

<ListView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/ltsunidades"
    android:layout_below="@+id/txtselunidade"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_above="@+id/btnsairmenu"
    android:layout_alignRight="@+id/txtselunidade"
    android:layout_alignEnd="@+id/txtselunidade" 
    android:textsize=???
/>

The property above android:textsize does not work in the ListView.

android listview
  • 1

    Recommend revise your question, especially the first sentence that is confused. In addition, I recommend explaining the problem a little better and putting more tags so that people know what the question is about without having to enter it. I believe it’s about development Android, right? Put at least the tag #android in the question.

  • I reiterate what @Danieldutra said, your question is very confusing and in need of editing. If I can figure something out, you want to shorten the text of every item on the listview, right? If so, you have to add this "android:textsize" attribute to the <Textview> used in the layout of the items. Please confirm that this is your question that I try to explain better in a more detailed answer.

  • not I have a listview that will receive a lot of information... I just wish I could decrease the source of listview .. probably it has a default android size... I just wanted to decrease this font.. sorry if I couldn’t get through what I really want.. and that in editext or textview I can change the font size by increasing or decreasing it .. but in listview there is no such option.

  • 1

    From what I understand I think ListView is basically a list of TextView, this way you need to change the text size of the TextView used by ListView.

2 answers

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Listview is a visual representation of data coming from a data source. Data is converted to Views using an Adapter.

I think you must be wearing one Arrayadapter, together with the View android.R.layout.simple_list_item_1

The data are presented with the "appearance" defined in this view

Nothing compels you to use that view, you can set another that will meet your needs.

Create a new layout with the name list_item_text.xml:

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/text1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceListItemSmall"
    android:gravity="center_vertical"
    android:paddingStart="?android:attr/listPreferredItemPaddingStart"
    android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
    android:minHeight="?android:attr/listPreferredItemHeightSmall" />

The above code is a copy of the file simple_list_item_1.xml, where is defined android.R.layout.simple_list_item_1.

Change it to your liking. Do not change the id, he needs to be @android:id/text1 so that it can be recognized by the Adapter.

For example, to change the textsize replace the line 

android:textAppearance="?android:attr/textAppearanceListItemSmall"

for

android:textsize="15sp"

To use this new layout change the line:

setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,oSeuArray));

for:

setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item_text, oSeuArray));
  • 1

    I got it. thanks is exactly what I wanted.

0

In Listview there really is no such attribute, because Listview is actually (and obviously) a list of views and you will have to do the customizations you want directly in the views. Within each of your Listview views you should have a Textview to display the data, so you will add this attribute in Textview instead of using it in Listview.

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