这个适配是依据坐标系的象限的思想来进项适配的。參考了部分的NGUI的适配方案。

在程序的事实上，来測量UI距离相机边界的像素然后依据比例来进行适配，个人认为还不错。 放码！

。

有个前提哦就是你要先定一个尺寸。

假如我优先适配1024*768。那在放置这个脚本之前，要把自己的界面还成1024*768的哦。我是依据第一次来进行适配的哦。

using UnityEngine;

using System.Collections;

#if UNITY_EDITOR

using UnityEditor;

#endif

public enum QuadrantLayout{

	Quadrant1,

	Quadrant2,

	Quadrant3,

	Quadrant4

}

[ExecuteInEditMode]

public class AutoLayout  : MonoBehaviour{

	[HideInInspector] public QuadrantLayout quadrant;

	[HideInInspector] public Vector2 margin;

	Vector3 lastPostion;

#if UNITY_EDITOR

	[HideInInspector] [SerializeField] private bool isFirstLoad=true;

	int pixelWidth;

	void Awake(){

		lastPostion = this.transform.localPosition;

		if(isFirstLoad){

			updateMarginOffset();

			isFirstLoad=false;

		}else{

			resetMarginOffset();

		}

	}

	void Update(){

		if(!Application.isPlaying){

			if(Vector3.Distance(lastPostion,this.transform.localPosition)>0.001f && Selection.activeGameObject == this.gameObject){

				updateMarginOffset();

				UnityEditor.EditorUtility.SetDirty(this);

			}else{

				resetMarginOffset();

			}

			lastPostion = this.transform.localPosition;

		}else{

			if((int)Camera.main.pixelWidth!=pixelWidth){

				resetMarginOffset();

			}

			pixelWidth = (int)Camera.main.pixelWidth;

		}

	}

#else

	void Start(){

		resetMarginOffset();

	}

#endif

	void updateMarginOffset(){

		float m = (Camera.main.WorldToScreenPoint(new Vector3(1,0,0))-Camera.main.WorldToScreenPoint(Vector3.zero)).x;

		float halfWidth=Camera.main.pixelWidth/2.0f/m;

		float halfHeight=Camera.main.pixelHeight/2.0f/m;

		Vector3 v = this.transform.position;

		//1

		if(v.x>=0 && v.y>=0){

			quadrant = QuadrantLayout.Quadrant1;

			margin = new Vector2(halfWidth-v.x,halfHeight-v.y);

		//2

		}else if(v.x>=0 && v.y<=0){

			quadrant = QuadrantLayout.Quadrant2;

			margin = new Vector2(halfWidth-v.x,halfHeight+v.y);

		//3

		}else if(v.x<=0 && v.y<=0){

			quadrant = QuadrantLayout.Quadrant3;

			margin = new Vector2(halfWidth+v.x,halfHeight+v.y);

		//4

		}else if(v.x<=0 && v.y>=0){

			quadrant = QuadrantLayout.Quadrant4;

			margin = new Vector2(halfWidth+v.x,halfHeight-v.y);

		}

	}

	void resetMarginOffset(){

		Vector3 sv = Vector3.zero;

		float m = (Camera.main.WorldToScreenPoint(new Vector3(1,0,0))-Camera.main.WorldToScreenPoint(Vector3.zero)).x;

		float halfWidth=Camera.main.pixelWidth/2.0f/m;

		float halfHeight=Camera.main.pixelHeight/2.0f/m;

		switch(quadrant){

			case QuadrantLayout.Quadrant1:

				sv = new Vector3(halfWidth-margin.x,halfHeight-margin.y,0);

				break;

			case QuadrantLayout.Quadrant2:

				sv = new Vector3(halfWidth-margin.x,margin.y-halfHeight,0);

				break;

			case QuadrantLayout.Quadrant3:

				sv = new Vector3(margin.x-halfWidth,margin.y-halfHeight,0);

				break;

			case QuadrantLayout.Quadrant4:

				sv = new Vector3(margin.x-halfWidth,halfHeight-margin.y,0);

				break;

		}

		sv.z = this.transform.position.z;

		transform.position = sv;

	}

}