拍照后相机不保存

Question

红米1s拍照后不保存。 这在 samsung j5-2016 中效果很好。我正在尝试拍照并上传到服务器。在上传之前我正在压缩图像，所以我需要文件名和文件路径。我如何获得 fileName 显示在 activity 结果方法中。

相机意图

val takePictureIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
                        if (takePictureIntent.resolveActivity(activity.packageManager) != null) {
                            startActivityForResult(takePictureIntent, 102)
                        }

在三星 phone 这会保存图片，因此我可以从 uri 获取文件。但是在 redmi 1s 中我无法获取 uri。我觉得红米 1s 好像没有保存拍照，所以我无法获取文件。 片段中的OnActivityResult显示为：

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if (requestCode == 102) && resultCode == Activity.RESULT_OK && data != null) {
        val uri = data.data

                val mimeType = activity.contentResolver.getType(uri)
                if (mimeType == null) {
                    val path = getPath(uri)
                    if (path == null) {
                        fileName = FilenameUtils.getName(uri.toString())
                    } else {
                        val file = File(path)
                        fileName = file.getName()
                    }
                } else {
                    val returnUri = data.getData()
                    val returnCursor = activity.contentResolver.query(returnUri, null, null, null, null)
                    val nameIndex = returnCursor.getColumnIndex(OpenableColumns.DISPLAY_NAME)
                    val sizeIndex = returnCursor.getColumnIndex(OpenableColumns.SIZE)
                    returnCursor.moveToFirst()
                    fileName = returnCursor.getString(nameIndex)
                    val size = Long.toString(returnCursor.getLong(sizeIndex));
                }
}
    }

我在

中收到错误

val mimeType = activity.contentResolver.getType(uri)

错误日志

08-23 17:17:52.039 12008-12008/? W/System.err: java.lang.NullPointerException
08-23 17:17:52.039 12008-12008/? W/System.err:     at android.content.ContentResolver.acquireExistingProvider(ContentResolver.java:1405)
08-23 17:17:52.039 12008-12008/? W/System.err:     at android.content.ContentResolver.getType(ContentResolver.java:304)
08-23 17:17:52.039 12008-12008/? W/System.err:     at in.motiontech.wave.fragment.ReviewOrderFragment.onActivityResult(ReviewOrderFragment.kt:396)
08-23 17:17:52.039 12008-12008/? W/System.err:     at android.support.v4.app.FragmentActivity.onActivityResult(FragmentActivity.java:164)
08-23 17:17:52.039 12008-12008/? W/System.err:     at android.app.Activity.dispatchActivityResult(Activity.java:5434)
08-23 17:17:52.039 12008-12008/? W/System.err:     at android.app.ActivityThread.deliverResults(ActivityThread.java:3363)
08-23 17:17:52.039 12008-12008/? W/System.err:     at android.app.ActivityThread.handleSendResult(ActivityThread.java:3410)
08-23 17:17:52.039 12008-12008/? W/System.err:     at android.app.ActivityThread.access00(ActivityThread.java:141)
08-23 17:17:52.039 12008-12008/? W/System.err:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1260)
08-23 17:17:52.039 12008-12008/? W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:102)
08-23 17:17:52.039 12008-12008/? W/System.err:     at android.os.Looper.loop(Looper.java:136)
08-23 17:17:52.049 12008-12008/? W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:5052)
08-23 17:17:52.049 12008-12008/? W/System.err:     at java.lang.reflect.Method.invokeNative(Native Method)
08-23 17:17:52.049 12008-12008/? W/System.err:     at java.lang.reflect.Method.invoke(Method.java:515)
08-23 17:17:52.049 12008-12008/? W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
08-23 17:17:52.049 12008-12008/? W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
08-23 17:17:52.049 12008-12008/? W/System.err:     at dalvik.system.NativeStart.main(Native Method)

如果我做错了什么请帮助我，请提出其他选择。

我也查看了一些 Whosebug 帖子，但找不到答案：

Camera Intent not saving photo

Camera is not saving after taking picture

Can not save camera's captured photo in application's "files" folder

编辑我还尝试关注 Camera Intent

val takePictureIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
                        val dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)
                        var output = File(dir, System.currentTimeMillis().toString() + ".jpeg")
                        if (takePictureIntent.resolveActivity(activity.packageManager) != null) {
                            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, output)
                            startActivityForResult(takePictureIntent, 102)
                        }

Answer 1

Camera is not saving after taking image in Redmi 1s.

它不会 "save" 大多数相机应用程序。您专门设置 ACTION_IMAGE_CAPTURE Intent 不在任何地方保存照片。

This works great in samsung j5-2016

只是因为您在该设备上使用有问题的相机应用程序。

ACTION_IMAGE_CAPTURE 不应该 return 一个 Uri。它应该做两件事之一：

如果您在 ACTION_IMAGE_CAPTURE Intent 中包含 EXTRA_OUTPUT，相机应用应该会将全分辨率照片保存到 Uri你在额外的
否则，您会在 returned Intent

getParcelableExtra("data")

Bitmap

由于您没有 EXTRA_OUTPUT，因此您不应期望将全分辨率照片保存在任何地方。

This sample app 显示如何使用 EXTRA_OUTPUT.

拍照后相机不保存

Camera is not saving after taking image

android

nullpointerexception

android-camera

kotlin-android-extensions