关于Unity+Vuforia开发的安卓应用，平板电脑的相机自动对焦

之前在论坛看到非常简洁并有用的对焦代码：Vuforia.CameraDevice.Instance.SetFocusMode(Vuforia.CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);
这段代码在手机上很好使，但是在平板上就失效了，求大神来解答一下，怎么才能让平板的相机也自动对焦，谢谢啦！！！

CameraDevice.Instance.SetFocusMode (CameraDevice.FocusMode.FOCUS_MODE_NORMAL);

这样就可以了！前提是你的平板是支持相机伸缩的！

解决了个别相机不对焦的问题，下面代码直接复制，放到相机上就可以了，也不敢说都好使，但是确实解决了我的难题；
using UnityEngine;
using System.Collections;
using Vuforia;

public class TestControl : MonoBehaviour
{
       
        private string label;
        private float touchduration;
        private Touch touch;
       
        // Use this for initialization
        void Start ()
        {
                Vuforia.CameraDevice.Instance.SetFocusMode(Vuforia.CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);
        }
       
        // Update is called once per frame
        void Update ()
        {

                Vuforia.CameraDevice.Instance.SetFocusMode(Vuforia.CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);

                if (Input.GetKey (KeyCode.Escape)) {
                        Application.Quit ();      
                }
               
                if (Input.touchCount > 0) {
                        touchduration += Time.deltaTime;
                        touch = Input.GetTouch (0);
                        if (touch.phase == TouchPhase.Ended && touchduration < 0.2f) {
                                StartCoroutine ("singleOrDouble");
                        }
                }  else {
                        touchduration = 0;     
                }
        }
       
        IEnumerator singleOrDouble ()
        {
                yield return new WaitForSeconds (0.3f);
                if (touch.tapCount == 1)
                        //Debug.Log ("Single");
                        OnSingleTapped ();
                else if (touch.tapCount == 2) {
                        //this coroutine has been called twice. We should stop the next one here otherwise we get two double tap
                        StopCoroutine ("singleOrDouble");
                        //Debug.Log ("Double");
                        OnDoubleTapped();
                }
        }
//       
        private void OnSingleTapped ()
        {
                TriggerAutoFocus ();
                //label = "Tap the Screen!";
        }
       
        private void OnDoubleTapped ()
        {
                //label = "Double Tap the Screen!";
        }
       
        //SingleTap Gestures are captured by AppManager and calls this method for TapToFocus
        public void TriggerAutoFocus ()
        {
                StartCoroutine (TriggerAutoFocusAndEnableContinuousFocusIfSet ());
        }
       
        /// <summary>
        /// Activating trigger autofocus mode unsets continuous focus mode (if was previously enabled from the UI Options Menu)
        /// So, we wait for a second and turn continuous focus back on (if options menu shows as enabled)
        /// </returns>
        private IEnumerator TriggerAutoFocusAndEnableContinuousFocusIfSet ()
        {

                CameraDevice.Instance.SetFocusMode (CameraDevice.FocusMode.FOCUS_MODE_TRIGGERAUTO);
                yield return new WaitForSeconds (1.0f);
                CameraDevice.Instance.SetFocusMode (CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);
        }

}

Garss 发表于 2015-12-18 09:20
CameraDevice.Instance.SetFocusMode (CameraDevice.FocusMode.FOCUS_MODE_NORMAL);

这样就可以了！前提是 ...

这个一直用的，不过个别手机和平板不好使，不过还是谢谢你！