如何在布局中使用 MainActivity 中的变量？

Question

I have a method that I want to use to display in the layout itself

public void GetPacificTime() 
{
    java.util.TimeZone pt = java.util.TimeZone.getTimeZone("GMT-8");
    java.util.Calendar c = java.util.Calendar.getInstance(pt);
    System.out.println(c.get(java.util.Calendar.HOUR_OF_DAY)+":"+c.get(java.util.Calendar.MINUTE)+":"+c.get(java.util.Calendar.SECOND));
}

How would I use this in my layout XML?

Answer 1

You can declare a TextView in your layout XML, then use findViewById() to get this TextView, then attach text on it using the setText() method.

Example:

TextView text = (TextView) findViewById(R.id.id_from_xml);
text.setText(c.get(java.util.Calendar.HOUR_OF_DAY)+":"+c.get(java.util.Calendar.MINUTE)+":"+c.get(java.util.Calendar.SECOND));