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Thread: Problem to get hour and minute

  1. #1
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    Default Problem to get hour and minute

    Hello,

    I am creating an Android application, I inserted a textfields "time" that allows the user to choose a time in the format "hh: mm" (is it also possible to change it in the format "mm: ss "?), and I want to get this hour (and minute) to convert it to milliseconds but I do not know how I can do it ?

    Thanks for your help !


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    Default Re: Problem to get hour and minute

    to convert it to milliseconds
    Are the milliseconds you are asking about the count of time since the beginning of the epoch? About Jan 1, 1970

    Does Android have the same classes as Java SE for parsing Strings and creating Date objects?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Problem to get hour and minute

    Yes, it's the number of milliseconds since the beginning of the Jan 1, 1970. And yes, Android have the same classes as JAVA but I don't know how I can get the number of hours and minutes that the user has chosen. Because the user choose a time in this format "hh:mm"

    [code=Java]<EditText
    android:id="@+id/temps"
    android:layout_width="40dp"
    android:layout_height="wrap_content"
    android:layout_marginLeft="10dip"
    android:ems="10"
    android:inputType="time" />[code]

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    Default Re: Problem to get hour and minute

    There are classes and methods for parsing those Strings into a Date object.
    Where do the year, month and day come from?
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    Default Re: Problem to get hour and minute

    The problem is there is no year, no month and no day but just a time which is in the Edittext.

    --- Update ---

    But I think I can use the current day, month and day.

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    Default Re: Problem to get hour and minute

    Is this what you are trying to do:
    Given a String: "11:23" you want to use today's date: (year, month and day) and that given hour and minutes with seconds = 0 to compute the milliseconds?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Problem to get hour and minute

    Yes, it's is exactly that I want to do.

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    Default Re: Problem to get hour and minute

    Try writing the code in Java SE first as it's easier to work with. When that works, copy it to the Android code.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Problem to get hour and minute

    Can I do something like that ? I don't know how put the hour and minutes that I want ?

     Calendar c = Calendar.getInstance();
    	    		c.set(Calendar.SECOND, 0);
    	    		c.set(Calendar.HOUR, ? );
    	    		c.set(Calendar.MINUTE, ?);
    	    		c.getTimeInMillis();

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    Default Re: Problem to get hour and minute

    What happens when you compile and execute that code?
    Replace the ? with good values.
    If you don't understand my answer, don't ignore it, ask a question.

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