-canOpenURL：URL失败：“ testapp23：//”-错误：“（null）”

Question

I get this error on real device:

-canOpenURL: failed for URL: "testapp23://app" - error: "(null)"

This is the code I use:

let openAnotherAppURL = NSURL(string: "testapp23://app")!     
if (UIApplication.sharedApplication().canOpenURL(openAnotherAppURL)) {
//some code
}

I added LSApplicationQueriesSchemes to my info.plist file

<key>LSApplicationQueriesSchemes</key>
<array>
     <string>testapp23</string>
</array>

And it seems to "recognise" the second apps scheme scheme, cause when I use something else like "testaapp23" I get a different error message (which makes sense):

-canOpenURL: failed for URL: "testaapp23://app" - error: "This app is not allowed to query for scheme testaapp23"

I have the second app installed on the device

<key>CFBundleURLTypes</key>
<array>
    <dict>
        <key>CFBundleTypeRole</key>
        <string>Editor</string>
        <key>CFBundleURLSchemes</key>
        <array>
            <string>testapp23</string>
        </array>
    </dict>
</array>

Am I missing something obvious?

Answer 1

Try in target application in its Info.plist:

<key>CFBundleURLTypes</key>
<array>
    <dict>
        <key>CFBundleTypeRole</key>
        <string>Editor</string>
        <key>CFBundleURLSchemes</key>
        <array>
            <string>testapp23</string>
        </array>
    </dict>
</array>

I've created demo project with 2 target: source and target apps. Everything working OK, when I run target, than source and checking canOpenURL: .