I think that the best way for me to start this post is to explain what I'm doing. I'm learning the Android platform because I want to learn how to program in Java (I'll need it for a class next year), and I reckon that the best way of doing this is for me to write simple apps. I have spent the last year programming in python so I know basic concepts, but I am teaching myself the most of it as I go along. This is the first time I have ventured outside of the relative safety of the book I am 'learning' from (in all honesty, I find these books better as references than actual tutorials).
I am currently stuck on a certain part of an app I am writing. What the app is meant to do is grab a string from a dynamically generated text file (over the http protocol). This is then displayed on the screen. I tend to learn best by example, so I have been looking for examples of opening http resources. I have started with a book I am learning from (Beginning Android) and a snippet on stackoverflow. These two 'examples' are http://stackoverflow.com/questions/1959676/httpget-in-android-unresolvedhostexception/1960768 and http://github.com/commonsguy/cw-android/blob/a5108d95e07eb79807f865c21bcee005b9dac917/Internet/Weather/src/com/commonsware/android/internet/WeatherDemo.java which are either more complicated, complete ideas or are tiny samples. I have botched together some code, but it is not working, and whilst I am fairly sure why, I'm not entirely sure how I could remedy it. This is my source code at the moment for anyone interested: As you can see, I'm having some trouble with the whole http side of things. I am not looking for an explanation here or any sort of fix to my code (that would be rude for me to ask), more a list of places where I have gone wrong, and perhaps another example of a similar action to mine. I am new to Java in general, and whilst I am a fast learner at these sorts of things, I am still firmly in the 'noob' zone, and being spoon-fed in any way is not great for learning! My development device is API 3, if that changes anything. package com.bakes.ChuckNorrisFacts; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; import org.apache.http.client.ResponseHandler; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.BasicResponseHandler; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.params.BasicHttpParams; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; public class ChuckNorrisFacts extends Activity implements View.OnClickListener { HttpEntity httpEntity; Button btn; TextView text; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); btn=(Button)findViewById(R.id.updatebutton); text=(TextView)findViewById(R.id.factbox); updateFact(); } public void onClick(View view){ updateFact(); } private void updateFact() { String url = "http://www.site.com/norris.php";; HttpClient client = new DefaultHttpClient(); HttpGet getMethod=new HttpGet(url); HttpResponse httpResponse = client.execute(getMethod); httpEntity = httpResponse.getEntity(); try { ResponseHandler<String> responseHandler = new BasicResponseHandler(); String responseBody=client.execute(getMethod, responseHandler); text.setText(httpEntity.getContent()); } catch (Throwable t) { text.setText("Chuck Norris doesn\'t need internet access. You do, so make sure you are connected and try again."); } } }
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