Data Control Consumer Error: "IOError: Input/output error"

Original Created Jan 20, 2017 | Regeneration Apr 22, 2026

Question

I'm encountering an "IOError: Input/output error" when trying to use the Data Control API in my Tizen application. Here's the code I'm using:

try {
    MAP = tizen.datacontrol.getDataControlConsumer(
        "http://tizen.org/datacontrol/provider/DictionaryDataControlProvider", 
        "Dictionary", 
        "MAP");
    var ReqId = new Date().getTime() % 2e9;
    MAP.addValue(ReqId, "tizen", "Foo", onRequestSuccess, onRequestError);
} catch (err) {
    console.log(err.name + ": " + err.message);
}

I've already included the required privilege in my config.xml:

<tizen:privilege name="http://tizen.org/privilege/datacontrol.consumer"/>

The error occurs consistently, and I've verified that the privilege is properly included. What could be causing this issue?

Answer

Problem Understanding

The error occurs when trying to use the Data Control Consumer API, specifically when calling getDataControlConsumer(). Multiple users have reported the same issue across different devices (Z1, Z3) and emulators, suggesting this might be a common problem with the Data Control implementation.

Solution Methods

Verify Provider Availability:
- Ensure the Data Control Provider you're trying to access is properly installed and running on the device.
- Check if the provider ID ("http://tizen.org/datacontrol/provider/DictionaryDataControlProvider") is correct.
Check Device Compatibility:
- Some older devices might have incomplete implementations of the Data Control API.
- Test on newer Tizen devices or different versions of the emulator.
Alternative Approach:
- Consider using other inter-application communication methods like Message Port API if Data Control isn't working as expected.

Code Examples

Here's a more robust implementation with additional error checking:

function initializeDataControl() {
    try {
        if (typeof tizen.datacontrol !== 'undefined') {
            var provider = tizen.datacontrol.getDataControlConsumer(
                "http://tizen.org/datacontrol/provider/DictionaryDataControlProvider",
                "Dictionary",
                "MAP");
            
            if (provider) {
                var ReqId = new Date().getTime() % 2e9;
                provider.addValue(ReqId, "tizen", "Foo", onRequestSuccess, onRequestError);
            } else {
                console.error("Failed to get Data Control Provider");
            }
        } else {
            console.error("Data Control API not available");
        }
    } catch (err) {
        console.error(err.name + ": " + err.message);
    }
}

Additional Tips

The Data Control API might require specific permissions on both consumer and provider sides.
Check the Tizen version compatibility as some API features might not be available in older versions.
Consider testing with the latest Tizen Studio and SDK versions.