Unity3D-调用Android系统邮件发送邮件，或调用系统分享去分享内容

最近在将项目移植到Android平台，虽然大部分的东西都不需要动，但是关于分享、反馈这类需要用到原生系统功能的，就需要单独去处理了！

其实发送邮件和分享是同样的道理，只是发送邮件的参数不同，最主要代码是这样的：

AndroidJavaClass intentClass = new AndroidJavaClass("android.content.Intent");            AndroidJavaObject intentObject = new AndroidJavaObject("android.content.Intent");            intentObject.Call<AndroidJavaObject>("setAction", intentClass.GetStatic<string>("ACTION_SEND"));            AndroidJavaClass uriClass = new AndroidJavaClass("android.net.Uri");            AndroidJavaObject uriObject = uriClass.CallStatic<AndroidJavaObject>("parse", "file://" + destination);            intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_STREAM"), uriObject);            intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), "Can you beat my score?");            intentObject.Call<AndroidJavaObject>("setType", "image/jpeg");            AndroidJavaClass unity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");            AndroidJavaObject currentActivity = unity.GetStatic<AndroidJavaObject>("currentActivity");            AndroidJavaObject chooser = intentClass.CallStatic<AndroidJavaObject>("createChooser", intentObject, "Share your new score");            currentActivity.Call("startActivity", chooser);

其实就是利用unity提供的java接口，调用android系统自己的一个分享类，然后设置相关参数即可。

下面是完整代码，要想试试效果，直接把下面的代码复制到一个类里面，然后弄个按钮调用OnShareNative分享，调用OnConnect去调用邮箱

using System.Collections;using System.Collections.Generic;using UnityEngine;using System.IO;public class NativeShareAndroid : MonoBehaviour {public GameObject waitObject;private bool isProcessing = false;private bool isFocus = false;void Awake(){waitObject.SetActive(false);}public void OnShareNative(){if (!isProcessing){StartCoroutine(TakeScreenshot());}}public void OnQuitGame(){Application.Quit();}public void OnConnect(){if (!isProcessing){StartCoroutine(SendMailAndroid());}}private IEnumerator TakeScreenshot(){isProcessing = true;waitObject.SetActive(true);        yield return new WaitForEndOfFrame();var width = Screen.width;var height = Screen.height;var tex = new Texture2D(width, height, TextureFormat.RGB24, false);tex.ReadPixels(new Rect(0, 0, width, height), 0, 0);tex.Apply();        string destination = Path.Combine(Application.persistentDataPath, "shareAndroid001.png");File.WriteAllBytes(destination, tex.EncodeToPNG());        yield return new WaitForSeconds(0.3f);        if (!Application.isEditor)        {            AndroidJavaClass intentClass = new AndroidJavaClass("android.content.Intent");            AndroidJavaObject intentObject = new AndroidJavaObject("android.content.Intent");            intentObject.Call<AndroidJavaObject>("setAction", intentClass.GetStatic<string>("ACTION_SEND"));            AndroidJavaClass uriClass = new AndroidJavaClass("android.net.Uri");            AndroidJavaObject uriObject = uriClass.CallStatic<AndroidJavaObject>("parse", "file://" + destination);            intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_STREAM"), uriObject);            intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), "Can you beat my score?");            intentObject.Call<AndroidJavaObject>("setType", "image/jpeg");            AndroidJavaClass unity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");            AndroidJavaObject currentActivity = unity.GetStatic<AndroidJavaObject>("currentActivity");            AndroidJavaObject chooser = intentClass.CallStatic<AndroidJavaObject>("createChooser", intentObject, "Share your new score");            currentActivity.Call("startActivity", chooser);            yield return new WaitForSeconds(1f);        }        yield return new WaitUntil(() => isFocus);        isProcessing = false;waitObject.SetActive(false);}void OnApplicationFocus(bool focusStatus){isFocus = focusStatus;}private IEnumerator SendMailAndroid(){isProcessing = true;waitObject.SetActive(true);if (!Application.isEditor){AndroidJavaClass intentClass = new AndroidJavaClass("android.content.Intent");            AndroidJavaObject intentObject = new AndroidJavaObject("android.content.Intent");            intentObject.Call<AndroidJavaObject>("setAction", intentClass.GetStatic<string>("ACTION_SEND"));// AndroidJavaClass uriClass = new AndroidJavaClass("android.net.Uri");            // AndroidJavaObject uriObject = uriClass.CallStatic<AndroidJavaObject>("parse", "mailto:[e-mail]");            // intentObject.Call<AndroidJavaObject>("setData", uriObject);string[] mailto = new string[]{"[e-mail]"};intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_EMAIL"), mailto);            intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_SUBJECT"), "[USERFEED]Android Test Feedback");intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), "We will get your suggestion!");            intentObject.Call<AndroidJavaObject>("setType", "plain/text");            AndroidJavaClass unity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");            AndroidJavaObject currentActivity = unity.GetStatic<AndroidJavaObject>("currentActivity");            AndroidJavaObject chooser = intentClass.CallStatic<AndroidJavaObject>("createChooser", intentObject, "Send your idea!");            currentActivity.Call("startActivity", chooser);yield return new WaitForSeconds(1f);}yield return new WaitUntil(() => isFocus);        isProcessing = false;waitObject.SetActive(false);}}

我自己测试的机器是华为p9，其他的机型还没试过。

下面是实测截图：

另外，如果邮箱你在系统设置好了，会直接打开邮箱，然后创建一个新邮件，填写好你给出的内容。