TextWriter in Android with Example
TextWriter is used to animate text. TextWriter can be used when users open the app i.e. in place of Splash Screen. One can also use Splash Screen instead of TextWriter but TextWriter is an animation library and it is known that animations help to gain the attention of the user so it is best to learn it. TextWriter can be customized according to the requirements like textColor, textSize, letterSpacing, and many more.
Approach
- Step 1: Add the support library in the root build.gradle file (not in module build.gradle file). This library jitpack is a novel package repository. It is made for JVM so that any library which is present in github and bigbucket can be directly used in the application.
allprojects {
repositories {
maven { url 'https://jitpack.io' }
}
}
- Step 2: Add the support Library in build.gradle file and add dependency in the dependencies section.
implementation 'com.github.sarnavakonar:TextWriter:v1.0'
- Step 3: Add the following code in activity_main.xml file. In this file add the TextWriter to the layout.
activity_main.xml
<?
xml
version
=
"1.0"
encoding
=
"utf-8"
?>
<
androidx.constraintlayout.widget.ConstraintLayout
xmlns:android
=
"http://schemas.android.com/apk/res/android"
xmlns:app
=
"http://schemas.android.com/apk/res-auto"
android:layout_width
=
"match_parent"
android:layout_height
=
"match_parent"
>
<
com.sarnava.textwriter.TextWriter
android:id
=
"@+id/textWriter"
android:layout_width
=
"match_parent"
android:layout_height
=
"match_parent"
xmlns:android
=
"http://schemas.android.com/apk/res/android"
/>
</
androidx.constraintlayout.widget.ConstraintLayout
>
- Step 4: Add the following code in MainActivity.java file. In this file add important tags of TextWriter and also add a
setListner()
to it which will invoked automatically when TextWriter written the whole text.MainActivity.java
package
org.w3wiki.textWriter
import
android.graphics.Color;
import
android.os.Bundle;
import
android.widget.Toast;
import
androidx.annotation.Nullable;
import
androidx.appcompat.app.AppCompatActivity;
import
com.sarnava.textwriter.TextWriter;
public
class
Activity
extends
AppCompatActivity {
TextWriter textWriter;
@Override
protected
void
onCreate(
@Nullable
Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textWriter = findViewById(R.id.textWriter);
textWriter
// sets the width of the view
.setWidth(
8
)
// More the value of delay,
// more time it will take to finish
// duration is in milliseconds
.setDelay(
30
)
// set color of text
.setColor(Color.GREEN)
// sets the configuration/shape of the drawing
// based on Configuration selected
.setConfig(TextWriter.Configuration.INTERMEDIATE)
// set size of text
.setSizeFactor(30f)
// set letter spacing of text
.setLetterSpacing(15f)
.setText(
"ALGORITHM GFG"
)
// when writing is finished this
// function will get invoked automaically.
.setListener(
new
TextWriter.Listener() {
@Override
public
void
WritingFinished() {
Toast.makeText(Activity.
this
,
"Learn Algorithm!"
,
Toast.LENGTH_SHORT).show();
}
})
.startAnimation();
}
}
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