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- Use in blocking mode (Syntax 1)
- Use in non-blocking mode (Syntax 2)
- Other notes
- Required permissions
- AppID required
- Application in the background: Specific case from Android 10
NFCReadTag (Function) In french: NFCLitTag Starts reading a NFC tag or enables the detection of NFC tags for the current window. // Read an NFC tag in blocking mode tag is nfcTag tag = NFCReadTag() IF NOT ErrorOccurred THEN Info(StringBuild("Reading an NFC tag of %1 type", tag..Type)) FOR EACH data OF tag.Data SWITCH data.Type CASE nfcText Info(data.Content) CASE nfcURI IF StringStartsWith(data.Content, "http") THEN BrowserRunApp(data.Content) END CASE nfcMedia IF data.MIMEType ~= "image/png" THEN fSaveBuffer(CompleteDir(SysDirStorageCard()) + "image.png", data.Content) END END END END // Read an NFC tag in non-blocking mode IF NOT NFCReadTag(ReadNFCTag) THEN Error("Failure starting the NFC detection.", ErrorInfo()) END INTERNAL PROCEDURE ReadNFCTag(tag is nfcTag) Info(StringBuild("A NFC tag of %1 type was detected.", tag.Type)) // Stop detection RETURN True END Syntax
Reading an NFC tag in non-locking mode Hide the details
<Result> = NFCReadTag(<WLanguage procedure>)
<Result>: Boolean - True if the detection of NFC tags was triggered,
- False otherwise. If an error occurs, the ErrorOccurred variable is set to True. To get more details on the error, use ErrorInfo.
<WLanguage procedure>: Procedure name Name of the WLanguage procedure ("callback") called when an NFC tag was read. This procedure has the following format: PROCEDURE <Procedure Name> (<Tag>) where <Tag> is a nfcTag variable containing the information read in the NFC tag. Remarks: - The parameters of this procedure are optional. There is no need to pass parameters to this procedure. Indeed, these parameters are automatically filled during each call.
- If the procedure returns True, the detection of NFC tags will be automatically stopped after the reading.
- If the procedure returns False or if it returns no value, the detection will remain active as long as the window in which the procedure was triggered is not closed.
Remarks Use in non-blocking mode (Syntax 2) The call to NFCReadTag starts detecting the NFC tags for the current window at the time of the call. The detection will be active when this window is displayed in the foreground of the application. When the window is closed, the detection is stopped and will have to be restarted by calling NFCReadTag. A fatal error will occur if there is no current window when NFCReadTag is called. Other notes - The NFC functions cannot be used in the simulator or in the emulator.
- The NFC functions are only available in read-only mode.
Required permissions The call to this function modifies the permissions required by the application. Required permissions: - NFC: Allows the applications to perform input/output operations via the NFC technology.
- VIBRATE: Used to access the sensor feature.
Related Examples:
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Cross-platform examples (WINDEV Mobile): WM System
[ + ] This application is an example of some of the features of WINDEV Mobile available for Android/iOS. The following system functions are used: - NFC - Multimedia control - Brightness - Volume - Wi-Fi - Bluetooth - Toast - Compass - Accelerometer - Camera control - LED - Vibration - Notifications - Drawing functions - Internet
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Business / UI classification: Business Logic Component: wd290android.jar
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