How to Justify Text in TextView in Android?

AndroidApps/ApplicationsMobile Development

This example demonstrates how to Justify Text in TextView on Android.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:app="http://schemas.android.com/apk/res-auto"
   xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   tools:context=".MainActivity">
   <android.support.v7.widget.RecyclerView
      android:id="@+id/recycler_view"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:layout_alignParentTop="true"
      android:layout_centerHorizontal="true"
      android:scrollbars="none" />
</RelativeLayout>

Step 3 − Add the following code to res/layout/list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="match_parent"
   android:id="@+id/container"
   android:padding="16dp"
   android:layout_height="match_parent">
   <TextView
      android:id="@+id/song_title"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="New Text"
      android:layout_marginTop="10dp"
      android:textSize="18dp"
      android:textStyle="bold"
      android:textColor="@color/colorPrimaryDark"/>
   <TextView
      android:id="@+id/song_year"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="New Text"
      android:textColor="#000"
      android:layout_below="@+id/song_title"
      android:layout_alignLeft="@+id/song_title"
      android:layout_alignStart="@+id/song_title"
      android:layout_marginTop="20dp" />
   <TextView
      android:id="@+id/song_author"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="New Text"
      android:textColor="#000"
      android:layout_alignTop="@+id/song_year"
      android:layout_alignParentRight="true"
      android:layout_alignParentEnd="true" />
</RelativeLayout>

Step 4 − Add the following code to src/MainActivity.java

package com.app.sample;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.os.Bundle;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
   private final String TAG = "MainActivity";
   private RecyclerView recyclerView;
   private LinearLayoutManager layoutManager;
   private RecyclerViewAdapter adapter;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      recyclerView = (RecyclerView)findViewById(R.id.recycler_view);
      recyclerView.addItemDecoration(new SimpleDividerItemDecoration(this));
      layoutManager = new LinearLayoutManager(MainActivity.this);
      recyclerView.setLayoutManager(layoutManager);
      List<ItemObject> posts = returnListItems();
      adapter = new RecyclerViewAdapter(MainActivity.this, posts);
      recyclerView.setAdapter(adapter);
   }
   private List<ItemObject> returnListItems(){
      List<ItemObject> items = new ArrayList<ItemObject>();
      items.add(new ItemObject("Blank Space", "Taylor Swift", "2016"));
      items.add(new ItemObject("Uptown Funk", "Mark Ronson", "2016"));
      items.add(new ItemObject("Can't Feel My Face", "The Weeknd", "2016"));
      items.add(new ItemObject("Cheerleader", "OMI", "2016"));
      items.add(new ItemObject("What Do You Mean?", "Justin Bieber", "2016"));
      items.add(new ItemObject("Hello", "Adele", "2016"));
      return items;
   }
}

Step 5 − Add the following code to src/ItemObject.java

package com.app.sample;
public class ItemObject {
   private String songTitle;
   private String songYear;
   private String songAuthor;
   public ItemObject(String songTitle, String songYear, String songAuthor) {
      this.songTitle = songTitle;
      this.songYear = songYear;
      this.songAuthor = songAuthor;
   }
   public String getSongTitle() {
      return songTitle;
   }
   public String getSongYear() {
      return songYear;
   }
   public String getSongAuthor() {
      return songAuthor;
   }
}

Step 6 − Add the following code to src/RecyclerViewAdapter.java

package com.app.sample;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.recyclerview.widget.RecyclerView;
import java.util.List;
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewHolders>{
   private List<ItemObject> itemList;
   private Context context;
   public RecyclerViewAdapter(Context context, List<ItemObject> itemList) {
      this.itemList = itemList;
      this.context = context;
   }
   @Override
   public RecyclerViewHolders onCreateViewHolder(ViewGroup parent, int viewType) {
      View layoutView = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, null);
      RecyclerViewHolders rcv = new RecyclerViewHolders(layoutView);
      return rcv;
   }
   @Override
   public void onBindViewHolder(RecyclerViewHolders holder, int position) {
      holder.songTitle.setText("Song Title: " + itemList.get(position).getSongTitle());
      holder.songYear.setText("Song Year: " + itemList.get(position).getSongYear());
      holder.songAuthor.setText("Song Author: " + itemList.get(position).getSongAuthor());
   }
   @Override
   public int getItemCount() {
      return this.itemList.size();
   }
}

Step 7 − Add the following code to src/RecyclerViewHolders.java

package com.app.sample;
import android.util.SparseBooleanArray;
import android.view.View;
import android.widget.TextView;
import androidx.recyclerview.widget.RecyclerView;
public class RecyclerViewHolders extends RecyclerView.ViewHolder
implements View.OnClickListener {
   public TextView songTitle;
   public TextView songYear;
   public TextView songAuthor;
   private SparseBooleanArray selectedItems = new SparseBooleanArray();
   public RecyclerViewHolders(View itemView) {
      super(itemView);
      itemView.setOnClickListener(this);
      songTitle = (TextView)itemView.findViewById(R.id.song_title);
      songYear = (TextView)itemView.findViewById(R.id.song_year);
      songAuthor = (TextView)itemView.findViewById(R.id.song_author);
   }
   @Override
   public void onClick(View view) {
      if (selectedItems.get(getAdapterPosition(), false)) {
         selectedItems.delete(getAdapterPosition());
         view.setSelected(false);
      } else {
         selectedItems.put(getAdapterPosition(), true);
         view.setSelected(true);
      }
   }
}

Step 8 − Add the following code to Manifests/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.app.sample">
   <application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:roundIcon="@mipmap/ic_launcher_round"
      android:supportsRtl="true"
      android:theme="@style/AppTheme">
         <activity android:name=".MainActivity">
            <intent-filter>
               <action android:name="android.intent.action.MAIN" />
               <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
      </activity>
   </application>
</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from the android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −

Click here to download the project code.

raja
Published on 26-Nov-2019 14:13:25
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