Sweaters

package arinado.sweaterweather;

import android.app.Activity;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;

public class Sweaters extends Activity {
    int i=R.drawable.sweater6;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sweaters);
        final ImageView sweater = (ImageView)findViewById(R.id.sweater);
        sweater.setImageResource(i++);
        EditText editTemp = (EditText)findViewById(R.id.enter_the_temperature);
        Button colour = (Button) findViewById(R.id.changeColour);
        final Button ok_delete = (Button) findViewById(R.id.okDelete);
        Button next = (Button) findViewById(R.id.next);
        Button create = (Button) findViewById(R.id.createNew);
        ok_delete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (ok_delete.getText()=="ok"){
                    ok_delete.setText("delete");

                }
                else {
                    ok_delete.setText("ok");

                }
            }
        });
        colour.setOnClickListener(new View.OnClickListener() {
            @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
            @Override
            public void onClick(View v) {
                sweater.setImageResource(i++);
                if (i>R.drawable.sweater9)
                    i=R.drawable.sweater1;
            }
        });
    }
}