Unity UI 以编程方式添加图像答案

【问题标题】：Unity UI add Image programmaticallyUnity UI 以编程方式添加图像
【发布时间】：2018-04-02 03:27:30
【问题描述】：

我使用以下代码将图像添加到画布但是图像位于左下角我希望图像位于画布的中心任何人都可以帮助我

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class TestController : MonoBehaviour {

    public GameObject canvas;
    //public Sprite refSprite;

    // Use this for initialization
    void Start () {

        GameObject imgObject = new GameObject("testAAA");

        RectTransform trans = imgObject.AddComponent<RectTransform>();
        trans.anchoredPosition = new Vector2(0.5f, 0.5f);
        trans.localPosition = new Vector3(0, 0, 0);
        trans.position = new Vector3(0, 0, 0);


        Image image = imgObject.AddComponent<Image>();
        Texture2D tex = Resources.Load<Texture2D>("red");
        image.sprite = Sprite.Create(tex, new Rect(0, 0, tex.width, tex.height), new Vector2(0.5f, 0.5f));
        imgObject.transform.SetParent(canvas.transform);


    }

    // Update is called once per frame
    void Update () {

    }
}

【问题讨论】：

标签： image user-interface unity3d

【解决方案1】：

你必须先设置父级，然后设置位置/旋转/缩放！

void Start () {
    GameObject imgObject = new GameObject("testAAA");

    RectTransform trans = imgObject.AddComponent<RectTransform>();
    trans.transform.SetParent(canvas.transform); // setting parent
    trans.localScale = Vector3.one;
    trans.anchoredPosition = new Vector2(0f, 0f); // setting position, will be on center
    trans.sizeDelta= new Vector2(150, 200); // custom size

    Image image = imgObject.AddComponent<Image>();
    Texture2D tex = Resources.Load<Texture2D>("red");
    image.sprite = Sprite.Create(tex, new Rect(0, 0, tex.width, tex.height), new Vector2(0.5f, 0.5f));
    imgObject.transform.SetParent(canvas.transform);
}

【讨论】：