Question

Hello I’d like to convert 24 hr to 12 hr in Android. The time comes from user input in the timepicker dialog, then display it in a textview. If the user clicks on the PM button in the picker dialog, it should automatically display that in a textview. For examaple, the user clicks on 3:00 AM, it should display in the textview as 3:00 AM, while another user clicks on 3:00 PM, it should display in the textview 3:00 PM not 15:00. Any help please?

Please do check the code I have below:

            public void onTimeSet( TimePicker view, int selectedHour,
                int selectedMinute ) {
            // Gets current time
            Calendar c = Calendar.getInstance();

            hour = selectedHour;
            minute = selectedMinute;


            // set waking time into textview

           String getWT = wakingtime.getText().toString();
           wakingtime.setText( new StringBuilder().append( pad( hour ))
                    .append( ":" ).append( pad( minute ))); 


            // Assign hour set in the picker
            c.set( Calendar.HOUR, selectedHour );
            c.set( Calendar.MINUTE, selectedMinute );

            // Have Calendar calculate the substraction of hours and minutes
            c.add( Calendar.HOUR, SUB_HOUR );
            c.add( Calendar.MINUTE, SUB_MINUTE );

            // Get the hour and the minute calculated
            hour = c.get( Calendar.HOUR );
            minute = c.get( Calendar.MINUTE );

I beg your pardon if you don’t see any formatting..

Answer 1

Changue this:

    wakingtime.setText( new StringBuilder().append( pad( hour ))
                        .append( ":" ).append( pad( minute ))); 

By this:

StringBuilder sb = new StringBuilder();
if(hour>=12){                      
    sb.append(hour-12).append( ":" ).append(minute).append(" PM");
}else{
    sb.append(hour).append( ":" ).append(minute).append(" AM");
}
wakingtime.setText(sb);