[android-developers] Re: Integrate ImageButton with ListActivity failed - List no longer selectable.

[qmwestview]

Hi Chander,

thanks for your help.

I have added
android:focusable=false
to the layout xml file but the result appears to be the same.

I thought this type of listActivity working with buttons etc is
supposed to be straightforward. But I failed to find a working example
so far. I am stucked here.


On Jan 31, 8:22 am, Chander Pechetty cspeche...@gmail.com wrote:
 make sure your list item does not contains focusable children (like
 buttons, imageviews)
 setting android:focusable=false usually works for buttons and so
 on...

 On Jan 30, 2:42 pm, qmwestview qmwestv...@googlemail.com wrote:

  Hi,

  I have a workingListActivityclass. Each of the list item consists of
  an ImageView and a TextView.

  However, when I try to replace the ImageView withImageButton, The
  list becomes unselectable. The onListItemClick or any other function
  no longer get called when press a list item (Although the track ball
  can still focus a list item, but nothing more can be done).

  I have searched the forum and also the internet and failed to find any
  such working example, apart from one guy reporting a similar problem
  but with no answer.

  The following is my code:

  1.      The list_item.xml:

  ?xml version=1.0 encoding=utf-8?
  RelativeLayout xmlns:android=http://schemas.android.com/apk/res/
  android
      android:layout_width=fill_parent
      android:layout_height=?android:attr/listPreferredItemHeight

      ImageButton
          android:id=@+id/refresh

          android:layout_width=wrap_content
          android:layout_height=fill_parent
          android:layout_alignParentTop=true
          android:layout_alignParentBottom=true
          android:src=@drawable/refresh /
      TextView
          android:id=@+id/title
          android:layout_width=fill_parent
          android:layout_height=fill_parent
                  android:layout_toRightOf=@id/refresh
          android:layout_alignParentBottom=true
          android:layout_alignParentRight=true
          android:singleLine=true/
  /RelativeLayout

  2.      the MainListActivityclass:

  import android.app.Dialog;
  import android.app.ListActivity;
  import android.content.Context;
  import android.os.Bundle;
  import android.util.Log;
  import android.view.KeyEvent;
  import android.view.LayoutInflater;
  import android.view.MenuItem;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.BaseAdapter;
  import android.widget.Button;
  import android.widget.ImageButton;
  import android.widget.ImageView;
  import android.widget.ListView;
  import android.widget.TextView;

  public class TestListActivity extendsListActivityimplements
  Constants {

          @Override
          public void onCreate(Bundle savedInstanceState) {
                  super.onCreate(savedInstanceState);
                  setListAdapter(new EfficientAdapter(this));
          }

          @Override
          protected void onListItemClick(ListView l, View v, int index, long
  id) {
                  Log.i(, onListitemClick);
          }

          public boolean onContextItemSelected(MenuItem item) {
                  Log.i(, onContextItemSelected);
                  return false;
          }

          private class EfficientAdapter extends BaseAdapter implements
  Constants {
                  private LayoutInflater layoutInflater;

                  Context ctx;
                  public EfficientAdapter(Context context) {
                          // Cache the LayoutInflate to avoid asking for a 
  new one each time.
                          layoutInflater = LayoutInflater.from(context);
                          ctx = context;
                  }

                  @Override
                  public int getCount() {
                          Log.i(, getCount);
                          return SIZE;
                  }

                  @Override
                  public Object getItem(int position) {
                          Log.i(, getItem);
                          return TBD;         }

                  @Override
                  public long getItemId(int positin) {
                          Log.i(, getItemId);
                          return positin;
                  }

                  public void update(int position) {
                          notifyDataSetChanged(); // triggers the view data 
  to be refreshed!
                  }

                  /**
                   * Make a view to hold each list item
                   */
                  @Override
                  public View getView(int position, View convertView, 
  ViewGroup
  parent) {
                          Log.i(, getView);
                          ViewHolder holder;
                          if (convertView == null) {
                                  convertView = 
  this.layoutInflater.inflate(R.layout.list_item,
  parent, false);

                                  holder = new ViewHolder();
                                  holder.title = (TextView

[android-developers] Re: Integrate ImageButton with ListActivity failed - List no longer selectable.

[qmwestview]

Update:

I found a way to intercept the key press, by just adding the following
code into getView(final int position, View convertView, ViewGroup
parent) method:

  convertView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
  Log.i( onClick :, (new Integer(position)).toString
());
}
  });

The problem with this approach is when pressing a list item, the list
item no longer get highlighted.

Anyone knows how to manually highlight a list item (suppose we know
its position)? I have tried v.setSelected(true) but the effect appears
to be not good.

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[android-developers] Re: Integrate ImageButton with ListActivity failed - List no longer selectable.

[qmwestview]

Adding android:focusable=false does work with CheckBox (tested: just
replace ImageButton with CheckBox in layout xml file).

On Feb 1, 11:12 am, qmwestview qmwestv...@googlemail.com wrote:
 Hi Chander,

 thanks for your help.

 I have added
     android:focusable=false
 to the layout xml file but the result appears to be the same.

 I thought this type oflistActivityworking with buttons etc is
 supposed to be straightforward. But I failed to find a working example
 so far. I am stucked here.

 On Jan 31, 8:22 am, Chander Pechetty cspeche...@gmail.com wrote:

  make sure your list item does not contains focusable children (like
  buttons, imageviews)
  setting android:focusable=false usually works for buttons and so
  on...

  On Jan 30, 2:42 pm, qmwestview qmwestv...@googlemail.com wrote:

   Hi,

   I have a workingListActivityclass. Each of the list item consists of
   an ImageView and a TextView.

   However, when I try to replace the ImageView withImageButton, The
   list becomes unselectable. The onListItemClick or any other function
   no longer get called when press a list item (Although the track ball
   can still focus a list item, but nothing more can be done).

   I have searched the forum and also the internet and failed to find any
   such working example, apart from one guy reporting a similar problem
   but with no answer.

   The following is my code:

   1.      The list_item.xml:

   ?xml version=1.0 encoding=utf-8?
   RelativeLayout xmlns:android=http://schemas.android.com/apk/res/
   android
       android:layout_width=fill_parent
       android:layout_height=?android:attr/listPreferredItemHeight

       ImageButton
           android:id=@+id/refresh

           android:layout_width=wrap_content
           android:layout_height=fill_parent
           android:layout_alignParentTop=true
           android:layout_alignParentBottom=true
           android:src=@drawable/refresh /
       TextView
           android:id=@+id/title
           android:layout_width=fill_parent
           android:layout_height=fill_parent
                   android:layout_toRightOf=@id/refresh
           android:layout_alignParentBottom=true
           android:layout_alignParentRight=true
           android:singleLine=true/
   /RelativeLayout

   2.      the MainListActivityclass:

   import android.app.Dialog;
   import android.app.ListActivity;
   import android.content.Context;
   import android.os.Bundle;
   import android.util.Log;
   import android.view.KeyEvent;
   import android.view.LayoutInflater;
   import android.view.MenuItem;
   import android.view.View;
   import android.view.ViewGroup;
   import android.widget.BaseAdapter;
   import android.widget.Button;
   import android.widget.ImageButton;
   import android.widget.ImageView;
   import android.widget.ListView;
   import android.widget.TextView;

   public class TestListActivity extendsListActivityimplements
   Constants {

           @Override
           public void onCreate(Bundle savedInstanceState) {
                   super.onCreate(savedInstanceState);
                   setListAdapter(new EfficientAdapter(this));
           }

           @Override
           protected void onListItemClick(ListView l, View v, int index, long
   id) {
                   Log.i(, onListitemClick);
           }

           public boolean onContextItemSelected(MenuItem item) {
                   Log.i(, onContextItemSelected);
                   return false;
           }

           private class EfficientAdapter extends BaseAdapter implements
   Constants {
                   private LayoutInflater layoutInflater;

                   Context ctx;
                   public EfficientAdapter(Context context) {
                           // Cache the LayoutInflate to avoid asking for a 
   new one each time.
                           layoutInflater = LayoutInflater.from(context);
                           ctx = context;
                   }

                   @Override
                   public int getCount() {
                           Log.i(, getCount);
                           return SIZE;
                   }

                   @Override
                   public Object getItem(int position) {
                           Log.i(, getItem);
                           return TBD;         }

                   @Override
                   public long getItemId(int positin) {
                           Log.i(, getItemId);
                           return positin;
                   }

                   public void update(int position) {
                           notifyDataSetChanged(); // triggers the view data 
   to be refreshed!
                   }

                   /**
                    * Make a view to hold each list item
                    */
                   @Override
                   public View getView(int position, View convertView, 
   ViewGroup
   parent) {
                           Log.i(, getView

[android-developers] Re: Integrate ImageButton with ListActivity failed - List no longer selectable.

[qmwestview]

Tried again and this time successful. Instead of doing it in xml file,
do it in code does the trick:

holder.imageButton.setFocusable(false);

Problem solved!

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[android-developers] Integrate ImageButton with ListActivity failed - List no longer selectable.

[qmwestview]

Hi,

I have a working ListActivity class. Each of the list item consists of
an ImageView and a TextView.

However, when I try to replace the ImageView with ImageButton, The
list becomes unselectable. The onListItemClick or any other function
no longer get called when press a list item (Although the track ball
can still focus a list item, but nothing more can be done).

I have searched the forum and also the internet and failed to find any
such working example, apart from one guy reporting a similar problem
but with no answer.

The following is my code:

1.  The list_item.xml:

?xml version=1.0 encoding=utf-8?
RelativeLayout xmlns:android=http://schemas.android.com/apk/res/
android
android:layout_width=fill_parent
android:layout_height=?android:attr/listPreferredItemHeight

ImageButton
android:id=@+id/refresh

android:layout_width=wrap_content
android:layout_height=fill_parent
android:layout_alignParentTop=true
android:layout_alignParentBottom=true
android:src=@drawable/refresh /
TextView
android:id=@+id/title
android:layout_width=fill_parent
android:layout_height=fill_parent
android:layout_toRightOf=@id/refresh
android:layout_alignParentBottom=true
android:layout_alignParentRight=true
android:singleLine=true/
/RelativeLayout

2.  the Main ListActivity class:

import android.app.Dialog;
import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class TestListActivity extends ListActivity implements
Constants {


@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setListAdapter(new EfficientAdapter(this));
}

@Override
protected void onListItemClick(ListView l, View v, int index, long
id) {
Log.i(, onListitemClick);
}

public boolean onContextItemSelected(MenuItem item) {
Log.i(, onContextItemSelected);
return false;
}

private class EfficientAdapter extends BaseAdapter implements
Constants {
private LayoutInflater layoutInflater;

Context ctx;
public EfficientAdapter(Context context) {
// Cache the LayoutInflate to avoid asking for a new 
one each time.
layoutInflater = LayoutInflater.from(context);
ctx = context;
}


@Override
public int getCount() {
Log.i(, getCount);
return SIZE;
}

@Override
public Object getItem(int position) {
Log.i(, getItem);
return TBD;   }

@Override
public long getItemId(int positin) {
Log.i(, getItemId);
return positin;
}

public void update(int position) {
notifyDataSetChanged(); // triggers the view data to be 
refreshed!
}

/**
 * Make a view to hold each list item
 */
@Override
public View getView(int position, View convertView, ViewGroup
parent) {
Log.i(, getView);
ViewHolder holder;
if (convertView == null) {
convertView = 
this.layoutInflater.inflate(R.layout.list_item,
parent, false);

holder = new ViewHolder();
holder.title = (TextView) 
convertView.findViewById(R.id.title);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}

holder.title.setText(R.string.title);
parent.focusableViewAvailable(convertView); // 
originally without
this. Added for testing, still not working!
return convertView;
}

private class ViewHolder {
//ImageButton imageButton;
TextView title;
}
}
}

Is there any way to make ListActivity working with ImageButton or this
actually can not be achieved (iPhone can this)?

Any help would be most 

[android-developers] How to repeat Login dialog and progress dialog, coordinating with http thread

[qmwestview]

Hi there,

I am having a problem about repeating Login dialog (an AlertDialog)
and progress dialog, coordinating with http thread. I suppose
repetitive Login dialog (if fail, continue) handling should be common
and straightforward. I guess my approach must be wrong somewhere. I
already spent 2 days on this and am desperate. So please help.

The usecase is like this:

I have a main activity.

User starts the app, the main activity starts.
Show a login dialog (generated by the main thread, i.e. from onCreate
()). The main thread then starts a wait_thread, which will wait for
http to return data and check the data and decide what to do.

After user input username/password and press login, a progress dialog
starts.

The progress dialog starts an http_thread to talk to the server and
get replies. Once done, it will notify the waiting thread.

If the user type in the right username password first time, the code
works fine.

But it always fail for 2nd time Login, i.e. When first login fail
(wrong username/password), the wait_thread will generate 2nd Login
dialog to let user repeat the login process. But after user hit the
login on this 2nd Login dialog, the system always crashes.

The exception here is:

ERROR/AndroidRuntime(21880): Uncaught handler: thread main exiting due
to uncaught exception
ERROR/AndroidRuntime(21880): android.view.ViewRoot
$CalledFromWrongThreadException: Only the original thread that created
a view hierarchy can touch its views.

The followings are part of the code.
...
public class Test extends Activity implements Constants,Runnable{
...

@Override
public void onCreate(Bundle savedInstanceState) {
...
showDialog(DIALOG_LOGIN); //
startHttpWaitThread();
}

private void startHttpWaitThread(){
try {
Thread dialogThread  = new Thread(this);
dialogThread.start();
} catch(Exception e){
//showDialog(DIALOG_LOGIN);
}
}
/*  @Override
public void onStart() {
super.onStart();
} */

public void run(){
Looper.prepare();

try {
synchronized(httpReplyData){ // httpReplyData holds all needed
data returned from server
httpReplyData.wait();
}
} catch(Exception e) {
e.printStackTrace();
}
if 
(httpReplyData.getHttpResult()!=HTTP_REPLY_STATUS_CODE_OK_200)
showDialog(DIALOG_LOGIN);
Looper.loop();
}

@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DIALOG_LOGIN:
return getLoginDialog(this);//,
case DIALOG_LOGIN_PROGRESS:
return new LoginProgressDialog
(ctxForLoginProgressDialog);//}
return null;
}

private Dialog getLoginDialog(Context ctx) {//, String name,
String pwd){
...
dialogBuilder.setPositiveButton(R.string.login, new
DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int
whichButton) {
networkService.startHttpThread
(HTTP_REQUEST_LOGIN_INDEX, getUsername(), getPassword()); //
networkService is the HTTP manager
showDialog(DIALOG_LOGIN_PROGRESS); //
startHttpWaitThread();
}
});
return dialogBuilder.create();
}

private class LoginProgressDialog extends ProgressDialog
implements Constants{
//private ProgressThread progressThread;
public LoginProgressDialog(Context ctx){
super(ctx);
...
}
}
}

~~~
I also tried second approach, which moves the wait_thread into
progress dialog class/object, following Google’s “Creating a
ProgressDialog” (http://developer.android.com/guide/topics/ui/
dialogs.html#ProgressDialog). The 2nd login dialog is started by the
progress dialog. Its wait() method gets called ONLY once (that is
before 3nd showDialog(DIALOG_LOGIN) gets called). Seems to me the
unfinished progressDialog’s thread blocks new progressDialog to be
generated, I mean, when new showDialog(DIALOG_LOGIN_PROGRESS) called,
the system will continue to use last progressDialog which has already
responded to the first notify call and won’t respond to the notify
call any more. So although the http thread handles well and call
notify in due time, no one is waiting for that notify. Thus the system
just hungs, while progress dialog is doing it animation endlessly.

The followings are part of the code:
…
public class Test {// extends Activity implements Constants {
...
@Override
public void onCreate(Bundle savedInstanceState) {
...
showDialog(DIALOG_LOGIN); //
}

...
@Override
protected Dialog 

[android-developers] Configure app to work horizontal and vertical?

[qmwestview]

Hi,
Is it possible to configure all layouts of an Android app to support
BOTH landscape and portrait mode so that the app will work both when
phone is held vertically and horizontally. From my brief reading, it
seems not. Am I right?
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[android-developers] Re: Problem to show unicode strings in TextView

[qmwestview]

The Html.from(utfStringInDecimalForm).toString() works!

Thank you so much Ludovic Perrier!!

I have sent an email to Struts' mailing list, hoping they could
correct this in the first place.

QM
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[android-developers] Re: Problem to show unicode strings in TextView

[qmwestview]

My server side is using Struts (2.1.7). Strangely, the jsp, using
struts tags, usually outputs ideally encoded message which can be
displayed by Android’s TextView. Only when it comes to using struts’
“iterator” tag, then decimal unicode are sent to the client, which is
fine for browser, but causing problem for Android’s TextView.

To transfer the decimal Unicode into hexadecimal one is rather
straight forward on the phone side, but this incurs the performance
drop.

A painful decision to take may be to change the server technology from
Struts to Spring, hoping Spring is better than Struts, while Spring
may bring other benefit.


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[android-developers] Re: Problem to show unicode strings in TextView

[qmwestview]

I have also tried to escape  or #, e.g. replacing  with
#038; or amp; etc, but none of them work.

On Oct 16, 5:18 pm, qmwestview qmwestv...@googlemail.com wrote:
 Hi there,

 My data (stored as UTF-8 in the SQL db), when arrive at the phone as
 json strings, appear to be decimalUnicode, such as
 #32422;#20811;#23567;

 When I use setText(...) to show them inTextView, they are shown in
 their original form, rather than the characters they represent. If I
 use their equivalent form of UTF-8, i.e. \u7ea6\u514b\u5C0f, they
 then are shown correctly as 约克小。

 My questions are:

 1. How to receive the data in UTF-8 rather than decimalunicode? (I
 tried InputStreamReader(inputStream, UTF-8) but seems not working)

 or

 2. How to send the data in UTF-8 for Android rather than decimalunicode(the 
 same decimalunicodework fine for browser)?

 or

 3. Is there any function which can turn decimalunicodestring into
 UTF-8 string?

 4. Any other advice please?

 Many thanks in advance,

 qmwestview
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[android-developers] Problem to show unicode strings in TextView

[qmwestview]

Hi there,

My data (stored as UTF-8 in the SQL db), when arrive at the phone as
json strings, appear to be decimal Unicode, such as
#32422;#20811;#23567;

When I use setText(...) to show them in TextView, they are shown in
their original form, rather than the characters they represent. If I
use their equivalent form of UTF-8, i.e. \u7ea6\u514b\u5C0f, they
then are shown correctly as 约克小。

My questions are:

1. How to receive the data in UTF-8 rather than decimal unicode? (I
tried InputStreamReader(inputStream, UTF-8) but seems not working)

or

2. How to send the data in UTF-8 for Android rather than decimal
unicode (the same decimal unicode work fine for browser)?

or

3. Is there any function which can turn decimal unicode string into
UTF-8 string?

4. Any other advice please?

Many thanks in advance,

qmwestview





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