Cascades Development

[wzl0515]

Hello all, cause the sdk up to the gold version, I found the Invocation about Media Player have some thing change. So my code is going wrong when call the card to play vedio.

my code is like this:

void Myapp::invokeBoundMediaPlayer(QString uri) {
	InvokeRequest cardRequest;
	cardRequest.setTarget("sys.mediaplayer.previewer");
	cardRequest.setUri(uri);
	InvokeManager invokeManager;
	invokeManager.invoke(cardRequest);
}

 and in qml file:

    attachedObjects: [
            FilePicker {
                id: picker
                property string selectedFile
                title: qsTr("File Picker")
                mode: pickerMode.selectedValue
                type: pickerType.selectedValue
                viewMode: pickerViewMode.selectedValue
                sortBy: pickerSortBy.selectedValue
                sortOrder: pickerSortOrder.selectedValue
                onFileSelected: {
                    selectedFile = selectedFiles[0]
                    myClass.invokeBoundMediaPlayer(selectedFile);
                }
            }
]

so when I run my application, It said "Cannot assign [undefined] to QString".

I need your help, thank you very much.

[ekke]

yep - something changed with the pathes

check if your URI starts with "/" and if, then

prefix URI with "file://"

and I promise it will work.

I run into the same problem

[wzl0515]

Thank you very much. However, you can see the code I have posted that the uri is get by picker automatically. So how can I change the uri to file://?

Can you show me some codes or just fix it on the code I have posted?

It is important for me, thank you again.

[wzl0515]

Should I do like this?

cardRequest.setUri("file:/"+uri);

[ekke]

yes - if the only source of URI is from FilePicker

iuf there are different sources you can test if the uri starts with "/" and then prefix with file://

[ekke]

this should work:

// invoke MediaPlayer
void OpenDataSpace::invokeBoundMediaPlayer(const QString& uri) {
	qDebug() << "invoke bound mediaplayer" << uri;
	InvokeRequest cardRequest;
	// MediaPlayer needs file:// or http:// etc as prefix
	// FilePicker uses /account....... etc
	if (uri.startsWith('/')) {
		cardRequest.setUri("file://" + uri);
	} else {
		cardRequest.setUri(uri);
	}
	cardRequest.setTarget("sys.mediaplayer.previewer");
	mInvokeManager->invoke(cardRequest);
}

[wzl0515]

I do like this but it still doesn't work：

// invoke MediaPlayer
void CarAssistent::invokeBoundMediaPlayer(QString uri) {
	InvokeRequest cardRequest;
	cardRequest.setTarget("sys.mediaplayer.previewer");
	cardRequest.setUri("file://"+uri);
	InvokeManager invokeManager;
	invokeManager.invoke(cardRequest);
}

 is there some thing wrong？

[ekke]

only difference seems to be devlaration of InvokeManager ?

bb::system::InvokeManager *mInvokeManager;

[wzl0515]

I do like this：

// invoke MediaPlayer
void CarAssistent::invokeBoundMediaPlayer(QString uri) {
	qDebug() << "invoke bound mediaplayer" << uri;
	InvokeRequest cardRequest;
	//cardRequest.setUri("file://"+uri);

	if (uri.startsWith('/')) {
			cardRequest.setUri("file://" + uri);
		} else {
			cardRequest.setUri(uri);
		}
	cardRequest.setTarget("sys.mediaplayer.previewer");
	InvokeManager invokeManager;
	invokeManager.invoke(cardRequest);
}

 and it shows that：

Received childCardDone message:  "save" "[{"uri":"file:///accounts/1000/shared/camera/VID_00000006.mp4"}]" 

Received a message from the viewer: "[{"uri":"file:///accounts/1000/shared/camera/VID_00000006.mp4"}]" 

messageFromChildCard():  "" 

file:///apps/com.example.Myapp.testDev_r_Assistente806a0c6/native/assets//main.qml:120: Error: Cannot assign [undefined] to QString

 please help me, thank you!

[wzl0515]

where should i add this line of code?