TextWriter in Android with Example

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. XML

  allprojects {           
   repositories {           
          maven { url 'https://jitpack.io/' }           
       }          
  }           
  

• Step 2: Add the support Library in build.gradle file and add dependency in the dependencies section. XML

  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.geeksforgeeks.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();
      }
  }
  

Output: Run on Emulator



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Article Tags :

• Android
• Android-Animation