Bitmap storing in an Array

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3
Rackor
  • Forum-Beiträge: 19

13.10.2013, 15:27:32 via Website

in my app there is a part where i am searching dynamically for user..when i find some i send a hashmap with the userID to a asynctask to get their profildata(String and bitmap)

First i get the userData(Name etc.)..then i get here(start of the code that is shown here) the Urls from the Pictures stored on a webserver...when i have the URLs i save them in an Array and use this Array to get the Pictures. There I use a "for-loop" to get every single Picture..in Addition i want to save all the Bitmaps in an Array and return this Array together with my string(userdata) Array... but i cant store the Bitmaps in an Array, arraylist, or hashmap...everytime this variables return null...when i initialized the variables in the method i got a warning: "nullpointer Access, this varaible only can return null at this Point"...this warning was gone when i initialized the variable in the class head...but the Problem is still there..

what will be the Problem? did i do anything wrong??

1try{
2 ArrayList<NameValuePair> nameValuePair = new ArrayList<NameValuePair>();
3 Iterator<String> it = btID.keySet().iterator();
4 while(it.hasNext()){
5 String key = it.next();
6 nameValuePair.add(new BasicNameValuePair
7 (key,btID.get(key)));
8 }
9 DefaultHttpClient httpclient = new DefaultHttpClient();
10 HttpPost httppost = new HttpPost(url1);
11 httppost.setEntity(new UrlEncodedFormEntity(nameValuePair));
12 HttpResponse response = httpclient.execute(httppost);
13 HttpEntity entity = response.getEntity();
14 is = entity.getContent();
15
16 }catch(Exception e){
17 Log.e("log_tag", "Fehler bei der http-Verbindung" +
18 e.toString());
19 }
20
21 try{
22 BufferedReader reader= new BufferedReader
23 (new InputStreamReader(is,"iso-8859-1"),8);
24 StringBuilder sb = new StringBuilder();
25 String line = null;
26 while ((line = reader.readLine()) !=null) {
27 sb.append(line);
28 }
29 is.close();
30 result_picUrl = sb.toString();
31 urls = result_picUrl.toString().split(",");
32
33 }catch(Exception e){
34 Log.e("log_tag", "Error converting result " + e.toString());
35 }
36
37 //for(int i=0; i<urls.length; i++){
38 try {
39 InputStream in = new java.net.URL(urls[0]).openStream();
40 result = BitmapFactory.decodeStream(in);
41 } catch (Exception e) {
42 Log.e("Error", e.getMessage());
43 e.printStackTrace();
44 }
45 // HERE is the Problem!!
46 try{
47 bitmap.put("pic", result);
48 }catch(Exception e){
49 Log.e("log_tag", e.toString());
50 }
51 //}
52
53 BitString bitstring = new BitString(result_data, result_pic);

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3
Rackor
  • Forum-Beiträge: 19

13.10.2013, 16:18:35 via Website

Hallo
Hatte mich zuvor in nem englisch sprachigen forum erkundigt..jedoch konnte mir nicht geholfen werden. .war dann einfach zu faul alles auf deutsch neu zu schreiben^^
Also result (im unteren bereich) wird ein bitmap zugewießen..dieses soll dann einem array zugewießen werden (hier bitmap (hier eine hashmap))..hatte mit hashmap, normalen array und arraylist versucht..jedesmal sind sie null. .und ich weiß einfach nicht warum

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