Tag Archives: textview

Custom fonts TextView in Android

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Custom fonts TextView in Android

Nowadays, than ever before, everybody would like to use custom fonts in android TextViews.
It’s very easy to do it.

First step is to put the font in assets/fonts/Lato_Heavy.ttf

In this example we use Lato_Regular.ttf

Now, we are going to make a custom TextView, like this:

com.thedeveloperworldisyours
 
import android.content.Context;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.widget.TextView;
 
public class TextView_Lota_Heavy extends TextView {


    public TextView_Lota_Heavy(Context context) {
        super(context);
        applyCustomFont(context);
    }

    public TextView_Lota_Heavy(Context context, AttributeSet attrs) {
        super(context, attrs);
        applyCustomFont(context);
    }

    public TextView_Lota_Heavy(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        applyCustomFont(context);
    }

    private void applyCustomFont(Context context) {
        Typeface customFont = FontCache.getTypeface("fonts/Lato_Heavy.ttf", context);
        setTypeface(customFont);
    }
}

And FontCache

public class FontCache {
    private static HashMap<String, Typeface> fontCache = new HashMap<>();

    public static Typeface getTypeface(String fontname, Context context) {
        Typeface typeface = fontCache.get(fontname);

        if (typeface == null) {
            try {
                typeface = Typeface.createFromAsset(context.getAssets(), fontname);
            } catch (Exception e) {
                return null;
            }

            fontCache.put(fontname, typeface);
        }

        return typeface;
    }
}

when you want to load one of your custom fonts, you’d say something like:

Typefaces.get("Lato_Heavy");

basically this class ensures Android only loads each font once per instance of your app. the tradeoff, of course, is that each requested typeface object will remain in memory until your app is totally stopped by the OS (even though a given activity may not require each font).

Now we add our custom TextView in our layou.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/background" >
  
    <com.thedeveloperworldisyours.TextView_Lota_Regular
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
  
</LinearLayout>

You can download this code: Download code

Add a textview and a button to linear layout programmatically

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It’s very simple to add textviews and buttons to linear layout programmatically, just follow this steps. The fist step. Add a LinearLayout in .xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/activity_linear_layout"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/thewordis"
    android:orientation="horizontal"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin">

</LinearLayout>

Now in .class add:
1) add LinearLayout
2) add LayoutParams
3) add TextView
4) add Button
5) add the TextView and the Button to View

import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

public class ClassTheDeveloperWorldIsYours extends Activity{

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.the_developer_world_is_yours);

        //added LInearLayout
        LinearLayout linearLayout = (LinearLayout) findViewById(R.id.activity_linear_layout);

        //added LayoutParams
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        linearLayout.setOrientation(LinearLayout.VERTICAL);

        //add textView
        TextView textView = new TextView(this);
        textView.setText("The developer world is yours");
        textView.setId(1);
        textView.setLayoutParams(params);

        // added Button
        Button button = new Button(this);
        button.setText("thedeveloperworldisyours");
        button.setId(2);

        //added the textView and the Button to LinearLayout
        linearLayout.addView(textView);
        linearLayout.addView(button);

    }
}

You can download this code:

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