Я занимаюсь разработкой приложения для чата.У меня есть около 4500 записей в моей базе данных, в этой базе данных отображаются изображения пользователей и сообщения чата.Я реализован ниже код файла больше времени отображения всей информации любое предложение загружено в список.
Код файла:
// Handle the messages and post messages to list view
private void handlerMessage(final String messageType, final int dis)
{
myProgressDialog = ProgressDialog.show(Shout1.this,"","Loading...",true);
new Thread()
{
public void run()
{
try {
String xml;
Userid=getSharedPreferences("MyLoginInfo", 0).getString("user_id", "");
if(messageType.length()==0)
{
xml="<spGetUserMessages><SearchLocation></SearchLocation><LoginUserID>"+Userid+"</LoginUserID></spGetUserMessages>";
messages =parse.GetGetUserMessages(dataparsing.ILGetUserMessages(xml));
Message msg = myHandler.obtainMessage();
myHandler.sendMessage(msg);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
myProgressDialog.dismiss();
}
}.start();
}
// Handle the messages
private Handler myHandler = new Handler()
{
public void handleMessage(Message msg)
{
Log.v("Shout=====","inhandleMessage ======="+messages.size());
if(messages.size()==0)
{((LinearLayout)findViewById(R.id.LinearlayoutMessage)).removeAllViews();
Toast.makeText(Shout1.this, "No messages in that Location", Toast.LENGTH_SHORT).show();
}
else
{
((LinearLayout)findViewById(R.id.LinearlayoutMessage)).removeAllViews();
addElements(messages);
}
}
};
//add messagess to List
protected void addElements(final List<MessageClass> messages2)
{
((LinearLayout)findViewById(R.id.LinearlayoutMessage)).removeAllViews();
LinearLayout ll5=new LinearLayout(this);
ll5.setBackgroundColor(Color.WHITE);
ll5.setOrientation(1);
for(int i=0;i<messages2.size();i++)
{
LinearLayout ll1=new LinearLayout(this);
ll1.setPadding(0, 3, 0, 0);
ll1.setBackgroundResource(R.drawable.tabmessage);
ll1.setGravity(Gravity.CENTER);
final TextView messageid = new TextView(this);
messageid.setText(messages2.get(i).getmessageId());
final TextView targetid = new TextView(this);
targetid.setText(messages2.get(i).getUserid());
final TextView targetMessage = new TextView(this);
targetMessage.setText(messages2.get(i).getmessage());
LinearLayout layoutmsg=new LinearLayout(this);
layoutmsg.setClickable(true);
layoutmsg.setOrientation(1);
layoutmsg.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
ImageView msgImage=new ImageView(this);
final TextView msgimageInfo=new TextView(this);
try
{
String photoXml="<spGetMessagePhoto><MessageID>"+messages2.get(i).getmessageId()+"</MessageID></spGetMessagePhoto>";
String photoInfoFromDB1=new DataParsingComm().ILGetMessageImage(photoXml);
msgimageInfo.setText(photoInfoFromDB1);
if(photoInfoFromDB1.equalsIgnoreCase("anytype{}")|| photoInfoFromDB1==null)
{
msgImage.setVisibility(8);
}
else
{
byte[] imgArry= Base64.decode(photoInfoFromDB1);
Bitmap bit=BitmapFactory.decodeByteArray(imgArry,0,imgArry.length);
msgImage.setImageBitmap(bit);
}
}catch (Exception ee) {
// TODO: handle exception
ee.printStackTrace();
}
final TextView msg=new TextView(this);
msg.setText(messages2.get(i).getmessage());
final TextView msg1=new TextView(this);
if(messages2.get(i).getmessage().length()>60)
msg1.setText(messages2.get(i).getmessage().substring(0, 60)+"...");
else
msg1.setText(messages2.get(i).getmessage());
msg1.setTextColor(Color.BLACK);
msg1.setTypeface(Typeface.MONOSPACE);
msg1.setTextSize(13);
msg1.setWidth(250);
layoutmsg.addView(msgImage);
layoutmsg.addView(msg1);
ImageView PersonImage=new ImageView(this);
final TextView imageInfo=new TextView(this);
try{
//get the image based on user ID
String photoXml="<spGetUserPhoto><UserID>"+messages2.get(i).getUserid()+"</UserID></spGetUserPhoto>";
Log.v("check","photoXml.."+photoXml);
String photoInfoFromDB=new DataParsingComm().ILGetImage(photoXml);
Log.v("photoInfoFromDB","photoInfoFromDB.."+photoInfoFromDB);
imageInfo.setText(photoInfoFromDB);
if(photoInfoFromDB.equalsIgnoreCase("anytype{}")||photoInfoFromDB.equals(null) )
{
PersonImage.setImageResource(R.drawable.person);
}
else
{
byte[] imgArry= Base64.decode(photoInfoFromDB);
Bitmap bit=BitmapFactory.decodeByteArray(imgArry,0,imgArry.length);
Log.v("Shout","Image Lengthhhhhhhhhhhhh"+imgArry.length);
PersonImage.setImageBitmap(bit);
}
}catch (Exception ee) {
ee.printStackTrace();
}
final TextView personName=new TextView(this);
if(messages2.get(i).getUname().equalsIgnoreCase("noname"))
personName.setText("");
else
personName.setText(messages2.get(i).getUname());
personName.setTextColor(Color.rgb(0, 102, 51));
LinearLayout layoutPersonImage=new LinearLayout(this);
layoutPersonImage.setOrientation(1);
layoutPersonImage.setGravity(Gravity.CENTER);
layoutPersonImage.addView(PersonImage);
layoutPersonImage.addView(personName);
ll1.addView(layoutPersonImage);
ll1.addView(layoutmsg);
ll5.addView(ll1);
}
((LinearLayout)findViewById(R.id.LinearlayoutMessage)).addView(ll5);
}