Android Project using URL

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C#

private String getTextFromWWW(String URLin) {
   try {
      URL url = new URL(URLin);
      URLConnection connection = url.openConnection();
      BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
      String text = in.readLine();            
      in.close();

      return text;

   } catch (Exception e) {
      return "Error > " + e.getMessage();
   }
}

When I call this method it always shows Error
"Error > null"

I assigned permissions

XML

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />

Till I have problem in reading Data from web...

Posted 29-Nov-13 1:06am

Sid_Joshi

Updated 29-Nov-13 1:26am

Nelek

v3

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1 solution

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Xiao Ling · Accepted Answer · 2013-12-02T19:12:00

Solution 1

You should put your connection code in a thread. try this

new Thread(new Runnable(){

			@Override
			public void run() {
				// TODO Auto-generated method stub
				try {
					String URLin = "http://www.android.com/";
				      URL url = new URL(URLin);
				      URLConnection connection = url.openConnection();
				      BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
				      String text = in.readLine();    
				      Log.i("info", "text: " + text);
				      in.close();
				 
				      return;
				 
				   } catch (Exception e) {
				      Log.e("error", "Error > " + e.getMessage());
				   }
			}
			
		}).start();

Posted 2-Dec-13 19:12pm

Xiao Ling

Updated 2-Dec-13 19:16pm

v2

Comments

Sid_Joshi 3-Dec-13 4:37am

Till having problem
the application unfortunately closes
what precaution should i take to run this application?/
please help me i am new in android development

Xiao Ling 3-Dec-13 13:08pm

could you post exception log?

Sid_Joshi 4-Dec-13 1:34am

It shows
Unfortunately, ThreadURL has Stopped

12-04 06:31:22.368: I/info(1162): text: <!DOCTYPE html>
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.widget.TextView.invalidateRegion(TextView.java:4395)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.widget.TextView.invalidateCursor(TextView.java:4338)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.widget.TextView.spanChange(TextView.java:7186)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.widget.TextView$ChangeWatcher.onSpanAdded(TextView.java:8821)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.text.SpannableStringBuilder.sendSpanAdded(SpannableStringBuilder.java:979)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:688)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:588)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.text.Selection.setSelection(Selection.java:76)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.text.Selection.setSelection(Selection.java:87)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.text.method.ArrowKeyMovementMethod.initialize(ArrowKeyMovementMethod.java:302)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.widget.TextView.setText(TextView.java:3555)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.widget.TextView.setText(TextView.java:3425)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.widget.EditText.setText(EditText.java:80)
12-04 06:31:22.508: E/AndroidRuntime(1162): at android.widget.TextView.setText(TextView.java:3400)

Xiao Ling 4-Dec-13 3:50am

According to your post, you have got what you want. "12-04 06:31:22.368: I/info(1162): text: <!DOCTYPE html>". It is a new issue. Did you set text in the thread? You have to write UI code in main thread. Use runOnUiThread or Handler if you want to refresh your UI in a thread.

Sid_Joshi 4-Dec-13 6:12am

It works..
Thanks for Help.
How can I read entire web page by this code?

Xiao Ling 4-Dec-13 20:35pm

String text = null; while((text = in.readLine()) != null){Log.i("info", "text: " + text);}