Android textview bold xml

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Monday, January 5, 2015

How to display bold text in a TextView in android

TextView widget display text on android app. we can render a TextView to display text as bold or italic both programmatically by java file and syntactically by xml layout file. we also can bold TextView text syntactically by using string ressource file. this first android app demonstrate us how can we render TextView text bold, italic, normal and even underlined by declarative syntax.

the android:textStyle attribute allow us to set the text style to normal, bold or italic. we can combine this style by separated them using keyboard pipe | symbol. so if we want to render TextView text as bold and italic then we need to set the android:textStyle attribute value as android:textStyle=»blod|italic». android:textStyle=»normal|italic» value display text as italic, android:textStyle=»bold» value display text only bold and android:textStyle=»normal» value define TextView text appearance as normal.

this is very interesting that we can render a TextView’s part of text as bold, italic or underlined by using string resource file. the string resource file allow us to declare a string resource which value contain html tags. so the final output show the stylish text on android app. strings.xml resource file exist under res/values folder.

in the following example code, we declare a string key value pair name stylish_text and its value. stylish_text key’s value contain html tags those make part of text bold, italic and underlined. in the xml layout file we can assign the string resource as android:text=»@string/stylish_text».

TextView bold text programmatically

the following android example app code demonstrate us how can we bold, italic or underline TextView text programmatically at run time in java file.

setTypeface() method allow us to set the typeface and style in which the text should be displayed in a widget. all Typeface families have not bold and italic variants. geTypeface() method allow us to get the current typeface and style in which the text is being displayed. we can define a TextView widget’s font and font variant by the setTypeface() method as setTypeface(Typeface.MONOSPACE, Typeface.BOLD_ITALIC). the setTypefce() method only render a TextView text to bold, italic and normal. it does not support underline text or any other formatting.

if we want to display bold and underlined text programmatically on an app, we need to take help the setText() method. to do this, we need to provide html tags with text as setText() method parameter. the setText() method render the html tags and display formatted text on application.

another way to render TextView text bold programmatically in java code by using style resource file. we can put a styles.xml file on res/values folder. then assign styles item and value to the style file. finally we can apply any style from this style file to the TextView by using the setTextAppearnce() method.

setTextAppearance() method allow us to set the text color, size, style, hint color etc from the specified TextAppearance resource.

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4 Ways to make Android TextView Bold

In this tutorial, you will learn how to make Android TextView bold. There are 4 ways in this tutorial, you can easily learn, adapt the code and use it in your project as you like. Let’s start.

Way 1 – make Android TextView bold using android:textStyle attribute

android:textStyle attribute is the first and one of the best way to make the text in TextView bold. just use “bold”.

Way 2 – make Android TextView bold using setTypeface() method

TextView has a method called setTypeface() which needs

1. Typeface
2. Int styleflag

In our case, leave Typeface as null, use styleflag Typeface.BOLD.

Way 3 – make Android TextView bold using Html.fromHtml() method

The fromHtml() method returns displayable styled text from given Html string. Using this advantage, we can make our text in TextView bold.

If you got Manifest merger failed error, then add below code in gradle.properties.

HtmlCompat.FROM_HTML_MODE_LEGACY – It just adds two newline character between block level elements.

Way 4 – Make Android TextView Bold using separate style

In this example, we create a separate style resource and set it to our TextView. The advantage of this technique – you can use this style for many TextViews. Just specifying style attribute.

Step 1

Create a separate style resource named “boldStyle”, add “android:textStyle” as item and provide value “bold”.

Step 2

Set style to TextView using style attribute.

Let’s create an Android app with these examples. Open your Android Studio,

Step 1

Start a new Android Studio project

Company domain: androidride.example.com

Step 2

Select minimum SDK: API 15 – Android 4.0.3 (Ice Cream Sandwich) and click Next.

Next dialog, Select Empty Activity and click Next.

Activity Name: MainActivity
Check Generate layout file

Layout Name: activity_main

build.gradle(Project: TextView Bold – Kotlin)

build.gradle(Module: app)

gradle.properties

colors.xml

strings.xml

styles.xml

activity_main.xml

MainActivity.kt

Run Now android textview bold

If you find anything useful, please share it.
Thank you.

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