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POWrong reference in ListView Android?
 

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  1. POWrong reference in ListView Android?
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    <p><img src="https://i.stack.imgur.com/bzsOk.png" alt="enter image description here"> Hi everyone,</p> <p>I have a issue that stuck me 2 day, As you see the image, I start ONLY process #1 and update process to process bar but when I scroll down I see that another "process bar" run, It has the same process status as my first one (#1). I guess that my<code>ListView</code> items are reused and it use my process bar too, Does any one meet that problem? I also attach code as below,</p> <p>Thank for your reading</p> <pre><code> class gridAdapter extends BaseAdapter{ @Override public int getCount() { // TODO Auto-generated method stub return list.size(); } @Override public Object getItem(int position) { // TODO Auto-generated method stub return null; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub String currentText = list.get(position); View cell = convertView; if(cell==null){ LayoutInflater inflater = MainActivity.this.getLayoutInflater(); cell = inflater.inflate(R.layout.gird_tiem, null); ViewHolder viewHolder = new ViewHolder(); viewHolder.text = (TextView) cell.findViewById(R.id.tv_test); viewHolder.button = (Button) cell.findViewById(R.id.button); viewHolder.progressBar = (ProgressBar) cell.findViewById(R.id.process); cell.setTag(viewHolder); } final ViewHolder holder = (ViewHolder) cell.getTag(); holder.text.setText(currentText); holder.button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub processManager.onAddItemClick(100, holder.progressBar); } }); return cell; } } static class ViewHolder { public TextView text; public Button button; public ProgressBar progressBar; } </code></pre> <p>//My Process Manager</p> <pre><code>public class ProcessManager { Activity activity; public ProcessManager(Activity activity) { super(); this.activity = activity; } int temp; public void onAddItemClick(final int tasks, final ProgressBar cell) { new Thread(new Runnable() { @Override public void run() { for(int i = 0;i&lt;tasks;i++){ temp = i; Thread thread = new Thread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub } }); thread.run(); try { thread.sleep(500); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } activity.runOnUiThread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub cell.setProgress((temp*100)/tasks); } }); } } }).start(); } </code></pre> <p>//My item is</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; </code></pre> <p></p> <pre><code>&lt;TextView android:id="@+id/tv_test" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="XXXX" /&gt; &lt;Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Start Process" android:id="@+id/button" android:focusable="false" /&gt; &lt;ProgressBar android:id="@+id/process" style="?android:attr/progressBarStyleHorizontal" android:layout_width="match_parent" android:layout_height="wrap_content" android:max="100" /&gt; </code></pre> <p> //my Grid view</p> <p></p>
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    1. USTai Tran
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    1. COcould you post the xml layout where your progressBars are inside?
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      1. POWrong reference in ListView Android?
      1. USOpiatefuchs
    2. COYou should revise your code in the `onAddItemClick()` method. The items start the progress on their own because you assume the referenced `ProgressBar` is distinct for each row, which is not true as the `ListView` recycles rows.
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      1. POWrong reference in ListView Android?
      1. USLuksprog
 

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