如何在Unity中从Uri.fromfile转换为FileProvider.getUriForFile？

Question

我从代码this团结的答案代码安装的APK，但它并没有在Android的7.0工作，因为Uri.fromfile不再支持和FileProvider.getUriForFile现在应该使用。

我尝试在android studio中打开项目，并按照本教程操作清单文件-https://inthecheesefactory.com/blog/how-to-share-access-to-file-with-fileprovider-on-android-nougat/恩

        AndroidJavaClass intentObj = new 
        AndroidJavaClass("android.content.Intent");
        string ACTION_VIEW = intentObj.GetStatic<string>("ACTION_VIEW");
        int FLAG_ACTIVITY_NEW_TASK = intentObj.GetStatic<int>
        ("FLAG_ACTIVITY_NEW_TASK");
        AndroidJavaObject intent = new 
        AndroidJavaObject("android.content.Intent", ACTION_VIEW);

        AndroidJavaObject fileObj = new AndroidJavaObject("java.io.File", 
        apkPath);
        AndroidJavaClass uriObj = new AndroidJavaClass("android.net.Uri");
        AndroidJavaObject uri = uriObj.CallStatic<AndroidJavaObject>
        ("fromFile", fileObj);

        intent.Call<AndroidJavaObject>("setDataAndType", uri, 
        "application/vnd.android.package-archive");
        intent.Call<AndroidJavaObject>("addFlags", FLAG_ACTIVITY_NEW_TASK);
        intent.Call<AndroidJavaObject>("setClassName", 
        "com.android.packageinstaller", 
        "com.android.packageinstaller.PackageInstallerActivity");

        AndroidJavaClass unityPlayer = new 
        AndroidJavaClass("com.unity3d.player.UnityPlayer");
        AndroidJavaObject currentActivity = 
        unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
        currentActivity.Call("startActivity", intent);

Answer 1

只需更换

AndroidJavaObject fileObj = new AndroidJavaObject("java.io.File", apkPath);
AndroidJavaClass uriObj = new AndroidJavaClass("android.net.Uri");
AndroidJavaObject uri = uriObj.CallStatic<AndroidJavaObject>("fromFile", fileObj);

同

AndroidJavaObject fileObj = new AndroidJavaObject("java.io.File", apkPath);
AndroidJavaClass fileProvider = new AndroidJavaClass("android.support.v4.content.FileProvider");
AndroidJavaObject uri = fileProvider.CallStatic<AndroidJavaObject>("getUriForFile", unityContext, authority, fileObj);

authority参数的构造如下：

string packageName = unityContext.Call<string>("getPackageName");
string authority = packageName + ".fileprovider";

然后加入FLAG_GRANT_READ_URI_PERMISSION之前调用权限意图currentActivity.Call功能。

intent.Call<AndroidJavaObject>("addFlags", FLAG_GRANT_READ_URI_PERMISSION);

有关完整的脚本，请参阅现在编辑的“ 如何从统一应用程序安装Android apk”问题。