在Redmi 1s中拍摄图像后相机未保存。 这在三星j5-2016中非常有用。我想拍照并上传到服务器上。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。如何在活动结果方法中显示 fileName 。
相机意图
val takePictureIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
if (takePictureIntent.resolveActivity(activity.packageManager) != null) {
startActivityForResult(takePictureIntent, 102)
}
在三星手机中,这可以保存图片,因此我可以从uri获取文件。但在redmi 1s中,我无法获得uri。我认为似乎redmi 1s没有保存拍照,因此我无法获取文件。 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.access$1300(ActivityThread.java:141)
08-23 17:17:52.039 12008-12008/? W/System.err: at android.app.ActivityThread$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)
如果我做错了请帮助我,请提出其他选择。
我也查了一些Stackoverflow帖子,但无法找到答案:
Camera Intent not saving photo
Camera is not saving after taking picture
Can not save camera's captured photo in application's "files" folder
修改 我也试过 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)
}
答案 0 :(得分:2)
在Redmi 1s中拍摄图像后相机未保存。
它不会"保存"任何与大多数相机应用程序您专门设置了ACTION_IMAGE_CAPTURE
Intent
以便不在任何地方保存照片。
这在三星j5-2016中效果很好
只是因为您在该设备上使用了有缺陷的相机应用程序。
ACTION_IMAGE_CAPTURE
不应该返回Uri
。它应该做两件事之一:
如果您在EXTRA_OUTPUT
ACTION_IMAGE_CAPTURE
上加Intent
,则相机应用会将全分辨率照片保存到您提供的Uri
额外的
否则,您在返回的Bitmap
getParcelableExtra("data")
返回Intent
醇>
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显示了如何使用EXTRA_OUTPUT
。