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POEclipse: Debugging... then seems to stop in a while loop, without debugging the following codes, why?
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copied!<p>my friends ,i have to admit that the question is a little long, but to make you more clear of the question, i pasted the codes here, its some android codes. you neednt look at it carefully, its only a reference. for some functions of the codes doesnt work, i began to debug( using Eclipse). everything is ok before the <code>while</code> loop (i have marked it in the code), when enter the while loop, something magic that happens:</p> <ol> <li>the first loop, after executing the code <code>while((msg = d.readLine()) != null)</code>, the value of <code>msg</code> variable is blank, maybe its not <code>null</code>, because you will soon enter the second loop right now.</li> <li>the second loop, after executing the code <code>while((msg = d.readLine()) != null)</code>, the value of <code>msg</code> variable is <code>touchasd not found</code>, yes, its what i really want</li> <li><p>the third loop, after executing the code <code>while((msg = d.readLine()) != null)</code>, the small arrow which indicates the current line of code disappeared! i cannot find it anywhere! and the <strong><em>step over</em></strong> button is grey! i even cannot click it to continue the debug! just as the debugging is over! but i have some codes below that dont execute at all ! nothing in <code>logcat</code>. it seems that eclipse think it is ok, without any error occurred. </p> <pre><code> try { Process p = Runtime.getRuntime().exec("su"); DataOutputStream outputStream = new DataOutputStream(p.getOutputStream()); TextView suCommandMessage = (TextView)findViewById(R.id.suCommandMessage); BufferedReader d = new BufferedReader(new InputStreamReader(p.getErrorStream())); outputStream.writeBytes("touchasd /m\n"); String sb = ""; String msg = ""; /////////////////////////////////////HERE///////////////////////////////////// while((msg = d.readLine()) != null) { sb = sb + msg; } /////////////////////////////////////HERE///////////////////////////////////// suCommandMessage.setText(sb); outputStream.writeBytes("exit \n"); p.waitFor(); } catch(IOException e) { new AlertDialog.Builder(this) .setTitle("Exception") .setMessage("IOException: " + e) .setPositiveButton("OK", null) .show(); } catch(InterruptedException e) { new AlertDialog.Builder(this) .setTitle("Exception") .setMessage("InterruptedException: " + e) .setPositiveButton("OK", null) .show(); } </code></pre> <p>}</p></li> </ol> <p><img src="https://i.stack.imgur.com/uwC6H.png" alt="i make a screenshot when i cannot continue the debugging"></p>

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