我一直在尝试从外部存储共享一张图像,但它在 API 29 中不起作用。错误消息是:权限拒绝,文件需要导出提供程序或 grantUriPermission()。当我谷歌它时,这似乎是旧版本的问题。我不知道为什么 29 API 会出现这个问题。
我已经使用了与 grantUriPermission() 相关的所有解决方案,正如您在我的方法中看到的:
private fun shareInEmail() {
val filename = "Avoir+$timeStamp.jpg"
val filelocation =
File(Environment.getExternalStorageDirectory().getAbsolutePath(), filename)
//val path = Uri.fromFile(filelocation)
val path: Uri = FileProvider.getUriForFile(
requireContext(),
context!!.applicationContext.packageName + ".provider",
filelocation
)
val emailIntent = Intent(Intent.ACTION_SEND)
//if current version is greater than 21 version
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP ) {
emailIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
} else if(Build.VERSION.SDK_INT == Build.VERSION_CODES.Q) {// if current version is equal to 29 version
//grant permision for app with package to all
val resInfoList: List<ResolveInfo> = requireContext().packageManager
.queryIntentActivities(emailIntent, PackageManager.MATCH_DEFAULT_ONLY)
for (resolveInfo in resInfoList) {
val packageName: String = resolveInfo.activityInfo.packageName
requireContext().grantUriPermission(
packageName,
path,
Intent.FLAG_GRANT_WRITE_URI_PERMISSION or Intent.FLAG_GRANT_READ_URI_PERMISSION
)
}
}else {//lower versions
val resInfoList: List<ResolveInfo> = requireContext().packageManager
.queryIntentActivities(emailIntent, PackageManager.MATCH_DEFAULT_ONLY)
for (resolveInfo in resInfoList) {
val packageName: String = resolveInfo.activityInfo.packageName
requireContext().grantUriPermission(
packageName,
path,
Intent.FLAG_GRANT_WRITE_URI_PERMISSION or Intent.FLAG_GRANT_READ_URI_PERMISSION
)
}
}
//emailIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
// set the type to 'email'
emailIntent.type = "vnd.android.cursor.dir/email"
val to = arrayOf("[email protected]")
emailIntent.putExtra(Intent.EXTRA_EMAIL, to)
// the attachment
emailIntent.putExtra(Intent.EXTRA_STREAM, path)
// the mail subject
emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Transaction")
if (emailIntent.resolveActivity(context!!.getPackageManager()) != null) {
startActivity(Intent.createChooser(emailIntent, "Transaction"))
}
}
我指定,如果 API 是 29,则授予权限。但仍然不起作用
用于分享我使用的内容文件提供者.
这是我的清单:
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
这是我的provider_paths.xml 文件
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path
name="external_files"
path="." />
</paths>
这是日志:
E/DatabaseUtils: Writing exception to parcel
java.lang.SecurityException: Permission Denial: reading androidx.core.content.FileProvider uri content://com.ideasfactory.mjcprojet.provider/.provider/Avoir%2B2020-06-11%2019%3A16.jpg from pid=15561, uid=1000 requires the provider be exported, or grantUriPermission()
at android.content.ContentProvider.enforceReadPermissionInner(ContentProvider.java:729)
at android.content.ContentProvider$Transport.enforceReadPermission(ContentProvider.java:602)
at android.content.ContentProvider$Transport.enforceFilePermission(ContentProvider.java:593)
at android.content.ContentProvider$Transport.openTypedAssetFile(ContentProvider.java:507)
at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:307)
at android.os.Binder.execTransactInternal(Binder.java:1021)
at android.os.Binder.execTransact(Binder.java:994)
我已经这样做了一段时间了,我不知道我错过了什么。我将感谢您的所有帮助。