Nativescript ML kit OCR Text recognition crashes on resume sdk

Nativescript ML kit OCR Text recognition crashes on resume sdk < 23

In Nativescript using ML-kit text recognition for devices with sdk less than 23 when I pause the app and resume it brokes with an error:

System.err: Caused by: java.lang.RuntimeException: Camera
initialization failed because the camera device was already
opened(-16)

In sdk >= 23 it seems that it works fine, but the idea is to make that it works in all devices (my client device has android 5.5 so sdk < 23). I'm using the plugin on real time:

<FirebaseMLKitTextRecognition:MLKitTextRecognition

                id="ocrCam"

                class="ocrCam"

                width="100%"

                height="50%"

                processEveryNthFrame="3"

                preferFrontCamera="false"

                torchOn="{{ lightOn }}"

                pause="{{ pauseOCR }}"

                scanResult="onTextRecognitionResult" />

I read something about permissions like older versions no need them but new ones need them and it crashes when ask for them. But the issue where closed by "min sdk 23".

Are there any method to controll that crash or destroying the xml element on pause?

asked Nov 21 '18 at 15:34

Noark

125112

Are you setting pauseOCR to true when app is paused?

– Manoj
Nov 21 '18 at 15:48

Yes I tested with oauseOCR = true, collapse element and both. It really pauses view camera with a black block, but I have the same problem. (and in my >23 device it works perfectly without pausing and collapsing anything)

– Noark
Nov 21 '18 at 15:51

add a comment |

In Nativescript using ML-kit text recognition for devices with sdk less than 23 when I pause the app and resume it brokes with an error:

System.err: Caused by: java.lang.RuntimeException: Camera
initialization failed because the camera device was already
opened(-16)

In sdk >= 23 it seems that it works fine, but the idea is to make that it works in all devices (my client device has android 5.5 so sdk < 23). I'm using the plugin on real time:

<FirebaseMLKitTextRecognition:MLKitTextRecognition

                id="ocrCam"

                class="ocrCam"

                width="100%"

                height="50%"

                processEveryNthFrame="3"

                preferFrontCamera="false"

                torchOn="{{ lightOn }}"

                pause="{{ pauseOCR }}"

                scanResult="onTextRecognitionResult" />

I read something about permissions like older versions no need them but new ones need them and it crashes when ask for them. But the issue where closed by "min sdk 23".

Are there any method to controll that crash or destroying the xml element on pause?

asked Nov 21 '18 at 15:34

Noark

125112

Are you setting pauseOCR to true when app is paused?

– Manoj
Nov 21 '18 at 15:48

Yes I tested with oauseOCR = true, collapse element and both. It really pauses view camera with a black block, but I have the same problem. (and in my >23 device it works perfectly without pausing and collapsing anything)

– Noark
Nov 21 '18 at 15:51

add a comment |

In Nativescript using ML-kit text recognition for devices with sdk less than 23 when I pause the app and resume it brokes with an error:

System.err: Caused by: java.lang.RuntimeException: Camera
initialization failed because the camera device was already
opened(-16)

In sdk >= 23 it seems that it works fine, but the idea is to make that it works in all devices (my client device has android 5.5 so sdk < 23). I'm using the plugin on real time:

<FirebaseMLKitTextRecognition:MLKitTextRecognition

                id="ocrCam"

                class="ocrCam"

                width="100%"

                height="50%"

                processEveryNthFrame="3"

                preferFrontCamera="false"

                torchOn="{{ lightOn }}"

                pause="{{ pauseOCR }}"

                scanResult="onTextRecognitionResult" />

I read something about permissions like older versions no need them but new ones need them and it crashes when ask for them. But the issue where closed by "min sdk 23".

Are there any method to controll that crash or destroying the xml element on pause?

asked Nov 21 '18 at 15:34

Noark

125112

In Nativescript using ML-kit text recognition for devices with sdk less than 23 when I pause the app and resume it brokes with an error:

System.err: Caused by: java.lang.RuntimeException: Camera
initialization failed because the camera device was already
opened(-16)

In sdk >= 23 it seems that it works fine, but the idea is to make that it works in all devices (my client device has android 5.5 so sdk < 23). I'm using the plugin on real time:

<FirebaseMLKitTextRecognition:MLKitTextRecognition

                id="ocrCam"

                class="ocrCam"

                width="100%"

                height="50%"

                processEveryNthFrame="3"

                preferFrontCamera="false"

                torchOn="{{ lightOn }}"

                pause="{{ pauseOCR }}"

                scanResult="onTextRecognitionResult" />

I read something about permissions like older versions no need them but new ones need them and it crashes when ask for them. But the issue where closed by "min sdk 23".

Are there any method to controll that crash or destroying the xml element on pause?

android-camera nativescript firebase-mlkit

asked Nov 21 '18 at 15:34

Noark

125112

asked Nov 21 '18 at 15:34

Noark

125112

asked Nov 21 '18 at 15:34

Noark

125112

asked Nov 21 '18 at 15:34

Noark

125112

asked Nov 21 '18 at 15:34

Noark

125112

Are you setting pauseOCR to true when app is paused?

– Manoj
Nov 21 '18 at 15:48

Yes I tested with oauseOCR = true, collapse element and both. It really pauses view camera with a black block, but I have the same problem. (and in my >23 device it works perfectly without pausing and collapsing anything)

– Noark
Nov 21 '18 at 15:51

add a comment |

Are you setting pauseOCR to true when app is paused?

– Manoj
Nov 21 '18 at 15:48

Yes I tested with oauseOCR = true, collapse element and both. It really pauses view camera with a black block, but I have the same problem. (and in my >23 device it works perfectly without pausing and collapsing anything)

– Noark
Nov 21 '18 at 15:51

Are you setting pauseOCR to true when app is paused?

– Manoj
Nov 21 '18 at 15:48

Yes I tested with oauseOCR = true, collapse element and both. It really pauses view camera with a black block, but I have the same problem. (and in my >23 device it works perfectly without pausing and collapsing anything)

– Noark
Nov 21 '18 at 15:51

add a comment |

1 Answer
1

active

oldest

votes

Try releasing the camera on pause event of your application / activity.

// Where ocrCam should be reference to MLKitTextRecognition

ocrCam.camera.release();

answered Nov 21 '18 at 16:11

Manoj

7,46621024

Nice! with page.getViewById("ocrCam").camera.release(); it works. I didn't know release() method (I'm new on NativeScript) Lots of thanks it works very fine.

– Noark
Nov 21 '18 at 16:21

add a comment |

Your Answer

StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});

}
});

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53415499%2fnativescript-ml-kit-ocr-text-recognition-crashes-on-resume-sdk-23%23new-answer', 'question_page');
}
);

Post as a guest

Name

Required, but never shown

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

Try releasing the camera on pause event of your application / activity.

// Where ocrCam should be reference to MLKitTextRecognition

ocrCam.camera.release();

answered Nov 21 '18 at 16:11

Manoj

7,46621024

Nice! with page.getViewById("ocrCam").camera.release(); it works. I didn't know release() method (I'm new on NativeScript) Lots of thanks it works very fine.

– Noark
Nov 21 '18 at 16:21

add a comment |

Try releasing the camera on pause event of your application / activity.

// Where ocrCam should be reference to MLKitTextRecognition

ocrCam.camera.release();

answered Nov 21 '18 at 16:11

Manoj

7,46621024

Nice! with page.getViewById("ocrCam").camera.release(); it works. I didn't know release() method (I'm new on NativeScript) Lots of thanks it works very fine.

– Noark
Nov 21 '18 at 16:21

add a comment |

Try releasing the camera on pause event of your application / activity.

// Where ocrCam should be reference to MLKitTextRecognition

ocrCam.camera.release();

answered Nov 21 '18 at 16:11

Manoj

7,46621024

Try releasing the camera on pause event of your application / activity.

// Where ocrCam should be reference to MLKitTextRecognition

ocrCam.camera.release();

answered Nov 21 '18 at 16:11

Manoj

7,46621024

answered Nov 21 '18 at 16:11

Manoj

7,46621024

answered Nov 21 '18 at 16:11

Manoj

7,46621024

answered Nov 21 '18 at 16:11

Manoj

7,46621024

Nice! with page.getViewById("ocrCam").camera.release(); it works. I didn't know release() method (I'm new on NativeScript) Lots of thanks it works very fine.

– Noark
Nov 21 '18 at 16:21

add a comment |

Nice! with page.getViewById("ocrCam").camera.release(); it works. I didn't know release() method (I'm new on NativeScript) Lots of thanks it works very fine.

– Noark
Nov 21 '18 at 16:21

Nice! with page.getViewById("ocrCam").camera.release(); it works. I didn't know release() method (I'm new on NativeScript) Lots of thanks it works very fine.

– Noark
Nov 21 '18 at 16:21

add a comment |

draft saved

draft discarded

Thanks for contributing an answer to Stack Overflow!

Please be sure to answer the question. Provide details and share your research!

But avoid …

Asking for help, clarification, or responding to other answers.

Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Name

Required, but never shown

Name

Required, but never shown

This page is only for reference, If you need detailed information, please check here

搜尋此網誌

Agfdhyk