拍照后应用程序突然崩溃，旋转屏幕并return到activity
App suddenly crashes after taking a picture, rotate the screen and return to the activity
拍照后应用程序突然崩溃，旋转屏幕并return到activity。
我正在制作一个 Android 应用程序，它需要拍照并将其路线作为字符串存储到数据库中，我按照官方 google 教程 (https://developer.android.com/training/camera/photobasics#kotlin) 来执行此操作而无需实现我自己的相机应用程序。
但是当我执行以下步骤时遇到问题：
• 使用媒体 dispatchTakePictureIntent() 打开包含拍照逻辑的 activity
• 以人像模式启动相机。
• 将屏幕旋转到水平/相机旋转到横向模式。
• 拍照并点击“确定”按钮。
• 应用程序崩溃。
但是如果不旋转phone相机打开我可以随意使用拍摄照片。
我的代码是这样的：
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
if(requestCode == CodigosDeSolicitud.ANADIR_FOTOGRAFIA && resultCode == Activity.RESULT_OK){
setPic()
}
}
@Throws(IOException::class)
private fun createImageFile() : File{
val timeStamp: String = SimpleDateFormat("yyyyMMdd_HHmmss").format(Date())
val storageDir : File = getExternalFilesDir(Environment.DIRECTORY_PICTURES)
return File.createTempFile(
"JPEG_${timeStamp}_",
".jpg",
storageDir
).apply {
mCurrentPhotoPath = absolutePath
}
}
private fun dispatchTakePicktureIntent(){
Intent(MediaStore.ACTION_IMAGE_CAPTURE).also {takePictureIntent ->
takePictureIntent.resolveActivity(packageManager)?.also {
val photoFile : File? = try{
createImageFile()
} catch (ex : IOException){
null
}
photoFile?.also {
val photoURI: Uri = FileProvider.getUriForFile(
this,
"com.kps.spart.android.fileprovider",
it
)
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI)
startActivityForResult(takePictureIntent, CodigosDeSolicitud.ANADIR_FOTOGRAFIA)
}
}
}
}
private fun setPic(){
val targetW: Int = iconoUsuarioIV.width
val targetH: Int = iconoUsuarioIV.height
val bmOptions = BitmapFactory.Options().apply {
inJustDecodeBounds = true
BitmapFactory.decodeFile(mCurrentPhotoPath,this)
val photoW: Int = outWidth
val photoH: Int = outHeight
val scaleFactor : Int = Math.min(photoW / targetW, photoH / targetH)
inJustDecodeBounds = false
inSampleSize = scaleFactor
inPurgeable = true
}
val exif = ExifInterface(mCurrentPhotoPath)
val orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION,ExifInterface.ORIENTATION_UNDEFINED)
Toast.makeText(this@RegistrarUsuarioActivity,"Orientacion: " + orientation, Toast.LENGTH_SHORT).show()
BitmapFactory.decodeFile(mCurrentPhotoPath, bmOptions)?.also { bitmap ->
iconoUsuarioIV.setImageBitmap(bitmap)
}
我的 logcat 给出了下一个错误：
Caused by: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1000, result=-1, data=null} to activity {com.kps.spart.moskimedicationreminder/com.kps.spart.moskimedicationreminder.RegistrarUsuarioActivity}: java.lang.ArithmeticException: divide by zero
at android.app.ActivityThread.deliverResults(ActivityThread.java:4519)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3777)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3845)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3065)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4950)
at android.app.ActivityThread.-wrap19(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1730)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:7000)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408)
Caused by: java.lang.ArithmeticException: divide by zero
at com.kps.spart.moskimedicationreminder.RegistrarUsuarioActivity.setPic(RegistrarUsuarioActivity.kt:223)
at com.kps.spart.moskimedicationreminder.RegistrarUsuarioActivity.onActivityResult(RegistrarUsuarioActivity.kt:170)
at android.app.Activity.dispatchActivityResult(Activity.java:7630)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4515)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3777)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3845)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3065)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4950)
at android.app.ActivityThread.-wrap19(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1730)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:7000)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408)
使用中断点我发现当我在拍照时旋转屏幕时activity被破坏但是如果我不在那个activity为什么会发生这种情况我该如何解决这个问题？
我自己偶然发现了这个（遵循相同的指南）。我知道这个问题很老了，但我正在为可能遇到的任何其他问题发布解决方案。
问题出在被调用两次的 onCreate 方法中（当您 return 到 activity 拍照后，设备旋转后）。为了避免它，您应该阻止 dispatchTakePicktureIntent 的第二次调用（我猜您在 onCreate 方法中这样做）。
我是这样实现的：
class TakePhotoActivity : AppCompatActivity() {
private val captureRequestCode = 1
private val captureState = "capture_in_progress"
private val capturePhotoPath = "capture_photo_path"
private var photoPath: String? = null
private var captureInProgress: Boolean = false
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_take_photo)
captureInProgress = savedInstanceState?.getBoolean(captureState) ?: false
photoPath = savedInstanceState?.getString(capturePhotoPath)
if(!captureInProgress){
captureInProgress = true
dispatchTakePictureIntent()
}
}
override fun onSaveInstanceState(outState: Bundle) {
outState.putBoolean(captureState, captureInProgress)
outState.putString(capturePhotoPath, photoPath)
super.onSaveInstanceState(outState)
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == captureRequestCode && resultCode == RESULT_OK) {
user_photo.adjustViewBounds = true
val imgFile = File(photoPath ?: "")
if (imgFile.exists()) {
val myBitmap = BitmapFactory.decodeFile(imgFile.absolutePath)
user_photo.setImageBitmap(myBitmap)
runImageLabelingOnCurrentPicture(myBitmap)
}
captureInProgress = false
}
}
}
您需要将标志 'taking picture in process' 保存到 savedInstanceState 中，如果存在于 onCreate 方法中则将其恢复。就这些了。
拍照后应用程序突然崩溃，旋转屏幕并return到activity。 我正在制作一个 Android 应用程序，它需要拍照并将其路线作为字符串存储到数据库中，我按照官方 google 教程 (https://developer.android.com/training/camera/photobasics#kotlin) 来执行此操作而无需实现我自己的相机应用程序。 但是当我执行以下步骤时遇到问题： • 使用媒体 dispatchTakePictureIntent() 打开包含拍照逻辑的 activity • 以人像模式启动相机。 • 将屏幕旋转到水平/相机旋转到横向模式。 • 拍照并点击“确定”按钮。 • 应用程序崩溃。
但是如果不旋转phone相机打开我可以随意使用拍摄照片。
我的代码是这样的：
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
if(requestCode == CodigosDeSolicitud.ANADIR_FOTOGRAFIA && resultCode == Activity.RESULT_OK){
setPic()
}
}
@Throws(IOException::class)
private fun createImageFile() : File{
val timeStamp: String = SimpleDateFormat("yyyyMMdd_HHmmss").format(Date())
val storageDir : File = getExternalFilesDir(Environment.DIRECTORY_PICTURES)
return File.createTempFile(
"JPEG_${timeStamp}_",
".jpg",
storageDir
).apply {
mCurrentPhotoPath = absolutePath
}
}
private fun dispatchTakePicktureIntent(){
Intent(MediaStore.ACTION_IMAGE_CAPTURE).also {takePictureIntent ->
takePictureIntent.resolveActivity(packageManager)?.also {
val photoFile : File? = try{
createImageFile()
} catch (ex : IOException){
null
}
photoFile?.also {
val photoURI: Uri = FileProvider.getUriForFile(
this,
"com.kps.spart.android.fileprovider",
it
)
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI)
startActivityForResult(takePictureIntent, CodigosDeSolicitud.ANADIR_FOTOGRAFIA)
}
}
}
}
private fun setPic(){
val targetW: Int = iconoUsuarioIV.width
val targetH: Int = iconoUsuarioIV.height
val bmOptions = BitmapFactory.Options().apply {
inJustDecodeBounds = true
BitmapFactory.decodeFile(mCurrentPhotoPath,this)
val photoW: Int = outWidth
val photoH: Int = outHeight
val scaleFactor : Int = Math.min(photoW / targetW, photoH / targetH)
inJustDecodeBounds = false
inSampleSize = scaleFactor
inPurgeable = true
}
val exif = ExifInterface(mCurrentPhotoPath)
val orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION,ExifInterface.ORIENTATION_UNDEFINED)
Toast.makeText(this@RegistrarUsuarioActivity,"Orientacion: " + orientation, Toast.LENGTH_SHORT).show()
BitmapFactory.decodeFile(mCurrentPhotoPath, bmOptions)?.also { bitmap ->
iconoUsuarioIV.setImageBitmap(bitmap)
}
我的 logcat 给出了下一个错误：
Caused by: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1000, result=-1, data=null} to activity {com.kps.spart.moskimedicationreminder/com.kps.spart.moskimedicationreminder.RegistrarUsuarioActivity}: java.lang.ArithmeticException: divide by zero
at android.app.ActivityThread.deliverResults(ActivityThread.java:4519)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3777)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3845)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3065)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4950)
at android.app.ActivityThread.-wrap19(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1730)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:7000)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408)
Caused by: java.lang.ArithmeticException: divide by zero
at com.kps.spart.moskimedicationreminder.RegistrarUsuarioActivity.setPic(RegistrarUsuarioActivity.kt:223)
at com.kps.spart.moskimedicationreminder.RegistrarUsuarioActivity.onActivityResult(RegistrarUsuarioActivity.kt:170)
at android.app.Activity.dispatchActivityResult(Activity.java:7630)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4515)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3777)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3845)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3065)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4950)
at android.app.ActivityThread.-wrap19(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1730)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:7000)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408)
使用中断点我发现当我在拍照时旋转屏幕时activity被破坏但是如果我不在那个activity为什么会发生这种情况我该如何解决这个问题？
我自己偶然发现了这个（遵循相同的指南）。我知道这个问题很老了，但我正在为可能遇到的任何其他问题发布解决方案。
问题出在被调用两次的 onCreate 方法中（当您 return 到 activity 拍照后，设备旋转后）。为了避免它，您应该阻止 dispatchTakePicktureIntent 的第二次调用（我猜您在 onCreate 方法中这样做）。
我是这样实现的：
class TakePhotoActivity : AppCompatActivity() {
private val captureRequestCode = 1
private val captureState = "capture_in_progress"
private val capturePhotoPath = "capture_photo_path"
private var photoPath: String? = null
private var captureInProgress: Boolean = false
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_take_photo)
captureInProgress = savedInstanceState?.getBoolean(captureState) ?: false
photoPath = savedInstanceState?.getString(capturePhotoPath)
if(!captureInProgress){
captureInProgress = true
dispatchTakePictureIntent()
}
}
override fun onSaveInstanceState(outState: Bundle) {
outState.putBoolean(captureState, captureInProgress)
outState.putString(capturePhotoPath, photoPath)
super.onSaveInstanceState(outState)
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == captureRequestCode && resultCode == RESULT_OK) {
user_photo.adjustViewBounds = true
val imgFile = File(photoPath ?: "")
if (imgFile.exists()) {
val myBitmap = BitmapFactory.decodeFile(imgFile.absolutePath)
user_photo.setImageBitmap(myBitmap)
runImageLabelingOnCurrentPicture(myBitmap)
}
captureInProgress = false
}
}
}
您需要将标志 'taking picture in process' 保存到 savedInstanceState 中，如果存在于 onCreate 方法中则将其恢复。就这些了。