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POHow to get the Android TextView to scroll down to the end automatically?
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  1. POHow to get the Android TextView to scroll down to the end automatically?
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    copied!<p>I have a TextView whose contents are copied from a text file. Now each time the contents of the text file is loaded into the TextView, I want it to scroll down automatically to the end. This is what that portion of my layout XML file has : </p> <pre><code> &lt;ScrollView android:id="@+id/scroller" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_above="@+id/command" android:layout_alignParentLeft="true" android:layout_below="@+id/header" android:fillViewport="true" &gt; &lt;TextView android:id="@+id/output" android:layout_width="fill_parent" android:layout_height="132dp" android:bufferType="spannable" android:editable="false" android:enabled="false" android:focusable="true" android:focusableInTouchMode="false" android:freezesText="true" android:inputType="textMultiLine" android:isScrollContainer="true" android:scrollbars="vertical" android:text="@string/output" &gt; &lt;requestFocus /&gt; &lt;/TextView&gt; &lt;/ScrollView&gt; </code></pre> <p>And this is what the function looks like :</p> <pre><code>public void displayOutput() { File sdcard = Environment.getExternalStorageDirectory(); File file = new File(sdcard,"/Android/data/terminalemulatorlog.txt"); StringBuilder text = new StringBuilder(); try { BufferedReader br = new BufferedReader(new FileReader(file)); String line; while ((line = br.readLine()) != null) { text.append(line); text.append('\n'); } } catch (IOException e) { Toast.makeText(getApplicationContext(),"Error reading file!",Toast.LENGTH_LONG).show(); } TextView output=(TextView) findViewById(R.id.output); output.setText(text); ((ScrollView) findViewById(R.id.scroller)).post(new Runnable() { public void run() { ((ScrollView) findViewById(R.id.scroller)).fullScroll(View.FOCUS_DOWN); } }); } </code></pre> <p>Now I found a partial solution over <a href="https://stackoverflow.com/questions/3087877/scroll-to-last-line-of-tablelayout-within-a-scrollview">here</a>. Hence the last line bit of code that says :</p> <pre><code>((ScrollView) findViewById(R.id.scroller)).post(new Runnable() { public void run() { ((ScrollView) findViewById(R.id.scroller)).fullScroll(View.FOCUS_DOWN); } }); </code></pre> <p>But this works only the first time the text file is loaded. How do I always make the TextView scroll down to the end?</p>
 

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