CODEWITHSUNDEEP
androidprogress-barclassloaderprogressdialog
tiptopjat
tiptopjat

Reputation: 499

Progress dialog on while starting a new activity

My app sets up a list of football team names, and on clicking a textview, the corresponding class is called in a the intent method.

The classes that are called load an xml layout file which is approx 200kb. I would like to implement a progress/loading icon whilst the xml file loads in the background.

I've looked on this site and read about ASynchTask but I don't know what code I need to write in the doInBackground() method.

Here is my class:

I have an array of textviews that get initialised, and an array of classnames assigned to each textview when clicked.

Can anybody help me? I'm a noobie.

As an alternative, is there a way of loading all these classes in the background when the user first clicks on the app?

public class Transfers extends Activity {

public final int[] teams = { R.id.ars, R.id.ast, R.id.bir, R.id.bla,
        R.id.blp, R.id.bol, R.id.che, R.id.eve, R.id.ful, R.id.hul,
        R.id.lee, R.id.liv, R.id.mid, R.id.mnc, R.id.mnu, R.id.nor,
        R.id.nwu, R.id.por, R.id.qpr, R.id.sto, R.id.sun, R.id.swa,
        R.id.tot, R.id.wes, R.id.wig, R.id.wol };

public final String[] teamnames = { "ars", "ast", "bir", "bla", "blp",
        "bol", "che", "eve", "ful", "hul", "lee", "liv", "mid", "mnc",
        "mnu", "nor", "nwu", "por", "qpr", "sto", "sun", "swa", "tot",
        "wes", "wig", "wol" };

TextView tv;
Class classname;
String prefix = "ttj.android.ft.teams.";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.m_transfers);

    for (int i = 0; i < teams.length; i++) {
        final int j = i;
        tv = (TextView) findViewById(teams[i]);
        tv.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                try {
                    classname = Class.forName(prefix + teamnames[j]);
                    Intent open = new Intent(Transfers.this, classname);
                    startActivity(open);
                } catch (ClassNotFoundException e) {
                    e.printStackTrace();
                }
            }
        });
    }
    ;
}

Upvotes: 1

Views: 468

Answers (1)

FoamyGuy
FoamyGuy

Reputation: 46856

You should forget the progress bar for a moment and rethink using an array of TextView's.

I don't know how you have them on the screen but you should switch to using some sort of AdapterView (i.e. ListView, GridView etc..) And then load an Adapter with all of your teams. That will significantly reduce the total number of actual View objects that you are creating, which will cut down your load time some.

Upvotes: 2

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