Android สร้างปุ่มถัดไป ให้กับเกมหลังจากผ่านด่านแรก จะใส่ตรงไหนคับ

package com.efk.englishforkindergarten;

import android.annotation.SuppressLint;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.Display;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Toast;

@SuppressLint({ "ClickableViewAccessibility", "DrawAllocation" }) public class game_1 extends View {

    public int[] object = new int[] { R.drawable.a
            , R.drawable.b, R.drawable.c, };
    public int[] target = new int[] { R.drawable.animal_1
            , R.drawable.animal_3, R.drawable.animal_5};

    public int object_size;
    public int[][] object_position;
    public int[][] object_default_position;
    public Bitmap[] object_bitmap = new Bitmap[object.length];

    public int[][] target_position;
    public Bitmap[] target_bitmap = new Bitmap[target.length];
    public boolean[] onTarget = new boolean[target.length];

    public int screen_width, screen_height;

    int object_id = -1;
    Context mContext;
    
    @SuppressWarnings("deprecation")
	public game_1(Context context, Display display) {
        super(context);
        mContext = context;

        screen_width = display.getWidth();
        screen_height = display.getHeight();
        object_size = screen_width / 5;
        for(int i = 0 ; i < object.length ; i++) {
            Bitmap bm = BitmapFactory.decodeResource(getResources(), target[i]);
            target_bitmap[i] = Bitmap.createScaledBitmap(bm, object_size, object_size, false);
            bm = BitmapFactory.decodeResource(getResources(), object[i]);
            object_bitmap[i] = Bitmap.createScaledBitmap(bm, object_size, object_size, false);
            onTarget[i] = false;
        }

        target_position = new int[][] { { screen_width * 2 / 8, screen_height * 7 / 8 }
                , { screen_width * 4 / 8, screen_height * 7 / 8 }
                , { screen_width * 6 / 8, screen_height * 7 / 8 } };
        object_default_position = new int[][] { { screen_width * 2 / 8, screen_height / 8 }
                , { screen_width * 4 / 8, screen_height / 8 }
                , { screen_width * 6 / 8, screen_height / 8 } };
        object_position = new int[][] { { object_default_position[0][0], object_default_position[0][1] }
                        , { object_default_position[1][0], object_default_position[1][1] }
                        , { object_default_position[2][0], object_default_position[2][1] } };
    }
    
    protected void onDraw(Canvas canvas) {

    	Paint p = new Paint();
        p.setColor(Color.rgb(0x3e, 0x9c, 0xbc));
    	p.setAntiAlias(true);
        for(int i = 0 ; i < target_position.length ; i++ ) {
            canvas.drawBitmap(target_bitmap[i]
                    , target_position[i][0] - (object_size / 2)
                    , target_position[i][1] - (object_size / 2), p);
        }

        for(int i = 0 ; i < target_position.length ; i++ ) {
            canvas.drawBitmap(object_bitmap[i]
                    , object_position[i][0] - (object_size / 2)
                    , object_position[i][1] - (object_size / 2), p);
        }
    }
    
    public boolean onTouchEvent(MotionEvent event) {
        int eventaction = event.getAction(); 
        int X = (int)event.getX(); 
        int Y = (int)event.getY(); 

        switch (eventaction ) { 

        case MotionEvent.ACTION_DOWN: // touch down so check if the finger is on a object
            object_id = -1;
        	for(int i = 0 ; i < object.length ; i++) {
        		double radCircle  = Math.sqrt( Math.pow(Math.abs(X - object_position[i][0]), 2)
        				+ Math.pow(Math.abs(Y - object_position[i][1]), 2) );
        		if(radCircle < object_bitmap[i].getWidth() / 2 && !onTarget[i]) {
                    object_id = i;
        		}
        	}
        
        case MotionEvent.ACTION_MOVE: 
        	if(object_id != -1 && !onTarget[object_id] ) {
                object_position[object_id][0] = X;
                object_position[object_id][1] = Y;
        	}
            break; 

        case MotionEvent.ACTION_UP:
            if(object_id != -1 && !onTarget[object_id] ) {
                if(Math.abs(object_position[object_id][0] - target_position[object_id][0]) < object_size / 2
                        && Math.abs(object_position[object_id][1] - target_position[object_id][1]) < object_size / 2) {
                    object_position[object_id][0] = target_position[object_id][0];
                    object_position[object_id][1] = target_position[object_id][1];
                    onTarget[object_id] = true;
                }

                int count = 0;
                for(int i = 0 ; i < object.length ; i++) {
                    if(onTarget[i])
                        count++;
                }

           if(count == object.length)
                    Toast.makeText(mContext, "ถูกต้อง  เก่งมาก ", Toast.LENGTH_SHORT).show();{
                  

                    	break; 
                        
	} };
            }
                	 
                         
                 
    
        invalidate(); 
    
      return true; 	
    }

    public void reset() {
        for(int i = 0 ; i < object.length ; i++)
            onTarget[i] = false;

        object_position = new int[][] { { object_default_position[0][0], object_default_position[0][1] }
                , { object_default_position[1][0], object_default_position[1][1] }
                , { object_default_position[2][0], object_default_position[2][1] } };

        invalidate();
    }
}