How to move text in Android Canvas

In this android programming source code example, we are going to move text in Android Canvas.

You can copy and adopt this source code example to your android project without reinventing the wheel.

Below is a step by step source code to move text in Android Canvas.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/relativeLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <view class="com.bluapp.androidview2.Canvas.CanvasActivity19$canvas19"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</RelativeLayout>

MainActivity.java

import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;


public class CanvasActivity19 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_canvas19);
    }
    public static class canvas19 extends View {
        private float x = 50;
        private float y = 60;
        private Paint paint;

        public canvas19(Context context, AttributeSet attributeSet) {
            super(context, attributeSet);
        }

        @Override
        protected void onDraw(Canvas canvas) {
            super.onDraw(canvas);
            paint = new Paint();
            paint.setColor(getResources().getColor(R.color.colorAccent));
            paint.setStyle(Paint.Style.FILL);
            paint.setTextSize(30);
            canvas.drawText("Hello World", x, y, paint);
        }

        @Override
        public boolean onTouchEvent(MotionEvent event){
            switch (event.getAction()){
                case MotionEvent.ACTION_DOWN:
                    break;

                case MotionEvent.ACTION_MOVE:
                    x = (int)event.getX();
                    y = (int)event.getY();
                    invalidate();
                    break;

                case MotionEvent.ACTION_UP:
                  //  x = (int)event.getX();
                   // y = (int)event.getY();
                    break;
            }
            return true;
        }
    }
}

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