Author Archives: wpadmin

To run method in parent activity from onPostExecute of AsyncTask, include the activity in the constructor. Solution found in stackoverflow. public class ConverterClass extends Activity … new AsyncNetworkConnection(this); … public void doPostAsyncWork() { public class AsyncNetworkConnection extends AsyncTask ConverterClass converterActivity; … Continue reading →

I couldn’t work out why this was giving me a null pointer exception. SimpleDateFormat sdf1 = new SimpleDateFormat(“yyyy-MM-dd”); Calendar inputDate; … tempVal = attributes.getValue(“time”); inputDate.setTime(sdf1.parse(tempVal)); To try to identify the problem I tried different ways including: SimpleDateFormat sdf1 = new … Continue reading →

When you have a string array in strings.xml, you can check whether your new string matches an entry in that array: String[] temp_array = getResources().getStringArray(R.array.your_array); if (Arrays.asList(temp_array).contains(myString)) return true;  

Based on a combination of these stackoverflow links (ArrayList into prefs and arrayList into ListView). Create ArrayList and save to preferences. SharedPreferences prefs = null; ArrayList logs; prefs = PreferenceManager.getDefaultSharedPreferences(this); logs = new ArrayList(); logs.add(“aaaaaaaa”); logs.add(“bbbbbbbb”); logs.add(“cccccccc”); SharedPreferences.Editor editor = … Continue reading →

SAX parser uses less memory than DOM parser, so better for mobiles. Sources were stackoverflow and android developer site but links now lost. This is the laptops.xml file placed on a remote server. <?xml version=”1.0″ encoding=”UTF-8″?> <laptops> <laptop model = … Continue reading →

This is my example pulled from a few sources (probably stackoverflow but I no longer have the links).  Put employees.xml in assets folder of project. <?xml version=”1.0″ encoding=”UTF-8″?> <employees> <employee> <id>2163</id> <name>Kumar</name> <department>Development</department> <type>Permanent</type> <email>kumar@tot.com</email> </employee> <employee> <id>6752</id> <name>Siva</name> <department>DB</department> … Continue reading →

Method found on stackoverflow but it doesn’t appear to be the best answer. After stopping a service, this method may still see it as running. This is presumably because android will clear it our in its own time. The method I … Continue reading →

To get a string/value: EditText e1 = (EditText)findViewById(R.id.count2a); int i = Integer.parseInt(e1.getText().toString()); To set from an activity: ((TextView)findViewById(R.id.score)).setText(Integer.toString(score)); To set from a fragment: ((TextView)view.findViewById(R.id.textView1)).setText(myCurrency1); To use a string from strings.xml: ((Button)findViewById(R.id.button2)).setText(R.string.sched_stop);  

1. Download xml file The solution that suited me best was largely built on this stackoverflow entry. I put it in an AsyncTask. Remember manifext update: <uses-permission android:name=”android.permission.WRITE_EXTERNAL_STORAGE”></uses-permission> <uses-permission android:name=”android.permission.INTERNET”></uses-permission> <uses-permission android:name=”android.permission.ACCESS_NETWORK_STATE”></uses-permission> In main activity. URL url = null; try … Continue reading →

This is my preferred solution from the stackoverflow answers seen (mainly this one from Harlo Holmes). Any fragment that should pass data back to its containing activity should declare an interface to handle and pass the data. Then make sure … Continue reading →