问题描述
我尝试对新的registerForActivityResult进行拍照.我可以打开相机意图",但是在拍照后,不会触发回调,并且我看不到任何有关活动结果"或logcat错误的信息.
I trying to new registerForActivityResult for taking picture. I can open Camera Intent, but after taking picture, callback is not triggered and i can't see anything about Activity Result or an error on logcat.
我也尝试了RequestPermission,它被触发了.我找不到,怎么了.
I tried also RequestPermission, it's triggered. I couldn't find, what's wrong.
我的代码在这里:
class UploadDocumentFragment {
private val registerTakePicture = registerForActivityResult(
ActivityResultContracts.TakePicture()
) { isSuccess ->
if (isSuccess) {
viewModel.addDocToRequest()
viewModel.setSelectedDocument(null)
} else {
R.string.internal_error.showAsDialog { }
}
}
//...
private fun takeImage() {
val photoFile: File? = viewModel.createImageFile()
photoFile?.also {
val photoURI: Uri = FileProvider.getUriForFile(
requireContext(),
BuildConfig.APPLICATION_ID +".fileProvider",
it
)
registerTakePicture.launch(photoURI)
}
}
}
ViewModel上的createImageFile函数:
createImageFile function on ViewModel:
@Throws(IOException::class)
fun createImageFile(): File? {
val imageFileName = selectedDocumentTypeLD.value?.visibleName
return try {
val file = File(storageDir, "$imageFileName.jpg")
if (file.createNewFile() || file.exists()) {
file
} else {
null
}
} catch (ex: IOException) {
ex.printStackTrace()
null
}
}
应用gradle:
implementation 'androidx.activity:activity-ktx:1.2.0-alpha06'
implementation 'androidx.fragment:fragment-ktx:1.3.0-alpha06'
推荐答案
我发现了问题.
我以前的onActivityResult函数仍然存在.我以为旧功能可能会覆盖registerForActivityResult.当我删除旧功能时,registerForActivityResult效果很好.
My previous onActivityResult function was still there. I thought maybe the old function could override registerForActivityResult. When I remove the old function, registerForActivityResult works very well.
这篇关于registerForActivityResult TakePicture未触发的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!