Kotlin: java.lang.IllegalArgumentException:找不到授权xxx的提供者的元数据

Question

我的应用程序包括经典的“分享这个应用程序”菜单选项，它需要两个屏幕截图，并通过邮件发送，以及一个促销文本。

在从Java迁移到Kotlin之前，它运行良好，但现在在Kotlin，它开始抛出一个异常。

奇怪的是，即使是异常(在logcat中也可以看到)--进程运行良好，应用程序没有崩溃(至少不是以可见的方式)--并且共享过程已经完成，例如，如果您选择电子邮件，电子邮件将与图像一起接收。

Manifest.xml

<provider
    android:name=".helpers.GenericFileProvider"
    android:authorities="${applicationId}.GenericFileProvider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/provider_paths"/>
</provider>

GenericFileProvider：

package com.xxx.xxx.helpers

import androidx.core.content.FileProvider

class GenericFileProvider : FileProvider()

provider_paths.xml：

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <cache-path name="cache" path="."/>
</paths>

shareFile：

@JvmStatic
fun shareFile(uris: ArrayList<Uri?>?, fileType: String?) {
    try {
        val share = Intent(Intent.ACTION_SEND_MULTIPLE)
        share.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
        share.type = fileType
        val strSubject = getStringResourceByName("mainmenu_sharethisapp_subject")
        share.putExtra(Intent.EXTRA_SUBJECT, strSubject)
        share.putParcelableArrayListExtra(Intent.EXTRA_TEXT, uris)
        share.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris)
        activity!!.get()!!.startActivity(
            Intent.createChooser(
                share,
                getStringResourceByName("mainmenu_sharethisapp_sharethoughttitle")
            )
        )
    } catch (ex: Exception) {
        Toast.makeText(activity!!.get(), ex.message.toString(), Toast.LENGTH_LONG).show()
    }
}

onImageProcessingFinished：

fun onImageProcessingFinished(ipr: ImageProcessingResult, activity: Activity) {
    val uris = ArrayList<Uri?>()
    for (file in ipr.screenShotFiles) {
        val uri = FileProvider.getUriForFile(activity,  activity.packageName + ".GenericFileProvider", file)
        if (uri!=null) uris.add(uri)
    }
    AWDrawerMenu.listener = activity as IActionListeners
    AWDrawerMenu.activity = WeakReference(activity)
    AWDrawerMenu.shareFile(uris, "image/jpg")
}

例外：

2022-06-16 22:01:08.427 11357-11378/com.xxx.xxx E/DatabaseUtils: Writing exception to parcel
    java.lang.SecurityException: Permission Denial: reading com.xxx.xxx.helpers.GenericFileProvider uri content://com.xxx.xxx.GenericFileProvider/cache/xxx.jpg from pid=6474, uid=1000 requires the provider be exported, or grantUriPermission()
        at android.content.ContentProvider.enforceReadPermissionInner(ContentProvider.java:820)
        at android.content.ContentProvider$Transport.enforceReadPermission(ContentProvider.java:684)
        at android.content.ContentProvider$Transport.enforceFilePermission(ContentProvider.java:674)
        at android.content.ContentProvider$Transport.openTypedAssetFile(ContentProvider.java:548)
        at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:327)
        at android.os.Binder.execTransactInternal(Binder.java:1154)
        at android.os.Binder.execTransact(Binder.java:1123)

编辑1：

如果我将onImageProcessingFinished方法替换为下一个

fun onImageProcessingFinished(ipr: ImageProcessingResult, activity: Activity) {
    val uris = ArrayList<Uri?>()
    for (file in ipr.screenShotFiles) {
        val uri = FileProvider.getUriForFile(activity,  activity.packageName + ".helpers.GenericFileProvider", file)
        if (uri!=null) uris.add(uri)
    }
    AWDrawerMenu.listener = activity as IActionListeners
    AWDrawerMenu.activity = WeakReference(activity)
    AWDrawerMenu.shareFile(uris, "image/jpg")
}

在.helpers之前添加GenericFileProvider (最终是GenericFileProvider的完整包名)，然后抛出以下异常(在本例中，应用程序会崩溃)：

2022-06-16 21:48:10.203 10694-10694/com.xxx.xxx E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.xxx.xxx, PID: 10694
    java.lang.IllegalArgumentException: Couldn't find meta-data for provider with authority com.xxx.xxx.helpers.GenericFileProvider
        at androidx.core.content.FileProvider.parsePathStrategy(FileProvider.java:662)
        at androidx.core.content.FileProvider.getPathStrategy(FileProvider.java:635)
        at androidx.core.content.FileProvider.getUriForFile(FileProvider.java:441)
        at com.xxx.xxx.component.drawer.AWDrawer$Companion.onImageProcessingFinished(AWDrawer.kt:294)
        at com.xxx.xxx.activities.main.MainActivity.onImageProcessingFinished(MainActivity.kt:448)
        at com.xxx.xxx.activities.main.MainActivity.onShareThisApp$lambda-6(MainActivity.kt:443)
        at com.xxx.xxx.activities.main.MainActivity.$r8$lambda$c-xNLWLGog-3ah1DvHN4y6HCHsw(Unknown Source:0)
        at com.xxx.xxx.activities.main.MainActivity$$ExternalSyntheticLambda3.onComplete(Unknown Source:4)
        at com.xxx.xxx.helpers.TaskRunner.executeAsync$lambda-1$lambda-0(TaskRunner.kt:24)
        at com.xxx.xxx.helpers.TaskRunner.$r8$lambda$ItjAcdIefpXj05LbTtje15JKSPM(Unknown Source:0)
        at com.xxx.xxx.helpers.TaskRunner$$ExternalSyntheticLambda0.run(Unknown Source:4)
        at android.os.Handler.handleCallback(Handler.java:938)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:223)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)

Answer 1

最后，我发现我遇到的问题和这里描述的完全一样：

Permission Denial while sharing file with FileProvider

幸运的是，同样的解决方案也适用于我。

我不得不更换这个：

@JvmStatic
fun shareFile(uris: ArrayList<Uri?>?, fileType: String?) {
    try {
        val share = Intent(Intent.ACTION_SEND_MULTIPLE)
        share.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
        share.type = fileType
        val strSubject = getStringResourceByName("mainmenu_sharethisapp_subject")
        share.putExtra(Intent.EXTRA_SUBJECT, strSubject)
        share.putParcelableArrayListExtra(Intent.EXTRA_TEXT, uris)
        share.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris)
        activity!!.get()!!.startActivity(
            Intent.createChooser(
                share,
                getStringResourceByName("mainmenu_sharethisapp_sharethoughttitle")
            )
        )
        activity!!.get()!!.startActivity(share)
    } catch (ex: Exception) {
        Toast.makeText(activity!!.get(), ex.message.toString(), Toast.LENGTH_LONG).show()
    }
}

通过这一点：

@JvmStatic
fun shareFile(uris: ArrayList<Uri?>?, fileType: String?) {
    try {
        val share = Intent(Intent.ACTION_SEND_MULTIPLE)
        share.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
        share.type = fileType
        val strSubject = getStringResourceByName("mainmenu_sharethisapp_subject")
        share.putExtra(Intent.EXTRA_SUBJECT, strSubject)
        share.putParcelableArrayListExtra(Intent.EXTRA_TEXT, uris)
        share.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris)
        /*activity!!.get()!!.startActivity(
            Intent.createChooser(
                share,
                getStringResourceByName("mainmenu_sharethisapp_sharethoughttitle")
            )
        )*/
        activity!!.get()!!.startActivity(share)
    } catch (ex: Exception) {
        Toast.makeText(activity!!.get(), ex.message.toString(), Toast.LENGTH_LONG).show()
    }
}

选择器看起来有点不同(不知道为什么)，但它很有效。

编辑1：

好的，最后的工作代码：

@JvmStatic
fun shareFile(uris: ArrayList<Uri?>?, fileType: String?) {
    try {
        val strSubject = getStringResourceByName("mainmenu_sharethisapp_subject")
        val strMessage = getStringResourceByName("mainmenu_sharethisapp_message")
        val intent = Intent()
        intent.type = fileType
        intent.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
        intent.putExtra(Intent.EXTRA_SUBJECT, strSubject)
        intent.putExtra(Intent.EXTRA_TEXT, strMessage)

        if (uris!!.size == 0) {
            return
        } else if (uris.size == 1) {
            val uri = uris[0]!!
            intent.action = Intent.ACTION_SEND
            intent.putExtra(Intent.EXTRA_STREAM, uri)
            intent.clipData = ClipData.newRawUri("", uri)
        } else {
            intent.action = Intent.ACTION_SEND_MULTIPLE
            intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris)
            val clipData = ClipData.newRawUri("", uris[0])
            for (i in 1 until uris.size) {
                val uri = uris[i]!!
                clipData.addItem(ClipData.Item(uri))
            }
            intent.clipData = clipData
        }

        activity!!.get()!!.startActivity(
            Intent.createChooser(
                intent, getStringResourceByName("mainmenu_sharethisapp_sharethoughttitle")
            )
        )
    } catch (ex: Exception) {
        Toast.makeText(activity!!.get(), ex.message.toString(), Toast.LENGTH_LONG).show()
    }
}