Disable TextField in J2ME

问题

Is it possible to dynamically make TextField element disabled and enabled during the run time in Java ME?

回答1:

according to API documentation, setConstraints(TextField.UNEDITABLE) could do something like that:

Sets the input constraints of the TextField...

Note if you need to preserve contents and modifier flags, parameter passed to above method might require some tweaking, like

    setConstraints((getConstraints() & TextField.CONSTRAINT_MASK)
        | TextField.UNEDITABLE) // "disable" - set UNEDITABLE

above to disable, and to enable back, something like:

    setConstraints((getConstraints() & TextField.CONSTRAINT_MASK))
        // "enable" - cleans up TextField.UNEDITABLE

来源：https://stackoverflow.com/questions/7842127/disable-textfield-in-j2me