Adding text and images to a listview

Question

I am trying to fetching image links and texts from server which need to be added to a listview.

This is the result come from server:

 {"result":
[{"url":"http:\/\/website.com\/ImageUpload\/pic\/85.png"},
{"name":"Vikram Sharma"},
{"url":"http:\/\/website.com\/ImageUpload\/pic\/67.png"},
{"name":"Sudhir Sharma"}]
}

Reference : https://www.simplifiedcoding.net/android-upload-image-using-php-mysql-android-studio/

//ImageListView.java

 public class ImageListView extends AppCompatActivity implements AdapterView.OnItemClickListener {

private ListView listView;

public static final String GET_IMAGE_URL="http://website.com/ImageUpload/getAllImages.php";

public GetAlImages getAlImages;

public static final String BITMAP_ID = "BITMAP_ID";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_image_list_view);

    listView = (ListView) findViewById(R.id.listView);
    listView.setOnItemClickListener(this);
    getURLs();
}

private void getImages(){
    class GetImages extends AsyncTask<Void,Void,Void>{
        ProgressDialog loading;
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            loading = ProgressDialog.show(ImageListView.this,"Downloading images...","Please wait...",false,false);
        }

        @Override
        protected void onPostExecute(Void v) {
            super.onPostExecute(v);
            loading.dismiss();
            System.out.println("Zinda 1");
            //Toast.makeText(ImageListView.this,"Success",Toast.LENGTH_LONG).show();
            CustomList customList = new CustomList(ImageListView.this,GetAlImages.imageURLs,GetAlImages.name,GetAlImages.bitmaps);
            System.out.println("Zinda 2");
            listView.setAdapter(customList);
        }

        @Override
        protected Void doInBackground(Void... voids) {
            try {
                System.out.println("Zinda 3");
                getAlImages.getAllImages();
                System.out.println("Zinda 4");

            } catch (JSONException e) {
                e.printStackTrace();
            }
            return null;
        }
    }
    GetImages getImages = new GetImages();
    getImages.execute();
}

private void getURLs() {
    class GetURLs extends AsyncTask<String,Void,String>{
        ProgressDialog loading;

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            loading = ProgressDialog.show(ImageListView.this,"Loading...","Please Wait...",true,true);
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            loading.dismiss();
            getAlImages = new GetAlImages(s);
            getImages();
        }

        @Override
        protected String doInBackground(String... strings) {
            BufferedReader bufferedReader = null;
            try {
                URL url = new URL(strings[0]);
                HttpURLConnection con = (HttpURLConnection) url.openConnection();
                StringBuilder sb = new StringBuilder();

                bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));

                String json;
                while((json = bufferedReader.readLine())!= null){
                    sb.append(json+"\n");
                }

                return sb.toString().trim();

            }catch(Exception e){
                return null;
            }
        }
    }
    GetURLs gu = new GetURLs();
    gu.execute(GET_IMAGE_URL);
}

@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
    Intent intent = new Intent(this, ViewFullImage.class);
    intent.putExtra(BITMAP_ID,i);
    startActivity(intent);
}
}

//CustomList.java

public class CustomList extends ArrayAdapter<String> {
    private String[] urls;
    private String[] name;
    private Bitmap[] bitmaps;
    private Activity context;
public CustomList(Activity context, String[] urls, String[] name,Bitmap[] bitmaps) {
    super(context, R.layout.image_list_view, urls);
    this.context = context;
    this.urls= urls;
    System.out.println("Singh 1");
    this.name= name;
    this.bitmaps= bitmaps;
}


@Override
public View getView(int position, View convertView, ViewGroup parent) {
    LayoutInflater inflater = context.getLayoutInflater();
    View listViewItem = inflater.inflate(R.layout.image_list_view, null, true);
    TextView textViewURL = (TextView) listViewItem.findViewById(R.id.textViewURL);
    System.out.println("Singh 2");
    TextView textViewName = (TextView) listViewItem.findViewById(R.id.textViewName);
    System.out.println("Singh 3");
    ImageView image = (ImageView) listViewItem.findViewById(R.id.imageDownloaded);

    textViewURL.setText(urls[position]);
    System.out.println("Singh 4");
    textViewName.setText(name[position]);
    System.out.println("Singh 5");
    image.setImageBitmap(Bitmap.createScaledBitmap(bitmaps[position], 100, 50, false));
    System.out.println("Singh 6");
    return  listViewItem;
}
}

//GetAlImages.java

public class GetAlImages {

public static String[] imageURLs;
public static String[] name;
public static Bitmap[] bitmaps;

public static final String JSON_ARRAY="result";
public static final String NAME = "name";
public static final String IMAGE_URL = "url";
private String json;
private JSONArray urls;


public GetAlImages(String json){
    this.json = json;
    try {
        JSONObject jsonObject = new JSONObject(json);
        urls = jsonObject.getJSONArray(JSON_ARRAY);
    } catch (JSONException e) {
        System.out.println("Matru 1");
        e.printStackTrace();
    }
}

private Bitmap getImage(JSONObject jo){
    URL url = null;
   // String name =null;
    Bitmap image = null;
    try {
        url = new URL(jo.getString(IMAGE_URL));
       // name = new String(jo.getString(NAME));
        image = BitmapFactory.decodeStream(url.openConnection().getInputStream());
    } catch (MalformedURLException e) {
        System.out.println("MAtru 2");
        e.printStackTrace();
    } catch (IOException e) {
        System.out.println("MAtru 3");
        e.printStackTrace();
    } catch (JSONException e) {
        System.out.println("Matru 4");
        e.printStackTrace();
    }
    return image;
}

public void getAllImages() throws JSONException {
    bitmaps = new Bitmap[urls.length()];

    imageURLs = new String[urls.length()];
    name = new String[urls.length()];

    for(int i=0;i<urls.length();i++){

        name[i] = urls.getJSONObject(i).getString(NAME);
        System.out.println("MAtru 5");

        imageURLs[i] = urls.getJSONObject(i).getString(IMAGE_URL);

        JSONObject jsonObject = urls.getJSONObject(i);
        System.out.println("MAtru 6");
        bitmaps[i]=getImage(jsonObject);
    }
}

}

//Logcat for error details

01-02 16:34:25.913 20237-20237/? I/Process: Sending signal. PID: 20237 SIG: 9
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime: FATAL EXCEPTION: main
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime: Process: com.package.name, PID: 20237
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime: java.lang.NullPointerException
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:589)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at com.package.listview.listview.CustomList.getView(CustomList.java:45)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.AbsListView.obtainView(AbsListView.java:2240)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.ListView.measureHeightOfChildren(ListView.java:1263)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.ListView.onMeasure(ListView.java:1175)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.View.measure(View.java:16558)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.View.measure(View.java:16558)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:135)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.View.measure(View.java:16558)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.View.measure(View.java:16558)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.View.measure(View.java:16558)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.View.measure(View.java:16558)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.View.measure(View.java:16558)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1923)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1120)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1302)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1007)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5677)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.Choreographer.doCallbacks(Choreographer.java:574)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.Choreographer.doFrame(Choreographer.java:544)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.os.Handler.handleCallback(Handler.java:733)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:95)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:136)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5021)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at java.lang.reflect.Method.invokeNative(Native Method)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Method.java:515)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:827)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:643)
01-02 16:34:25.913 20237-20237/? E/AndroidRuntime:     at dalvik.system.NativeStart.main(Native Method)
01-02 16:34:25.943 15342-15537/? I/ActivityManager: Process com.package.name (pid 20237) has died.
01-02 16:34:25.943 15342-15537/? W/ActivityManager: Force removing ActivityRecord{2e9ad3ac u0 com.package.name/com.package.listview.listview.ImageListView t15}: app died, no saved state
01-02 16:34:25.953 15342-15383/? W/InputDispatcher: channel '2ea211d8 com.package.name/com.package.listview.listview.ImageListView (server)' ~ Consumer closed input channel or an error occurred.  events=0x9
01-02 16:34:25.953 15342-15383/? E/InputDispatcher: channel '2ea211d8 com.package.name/com.package.listview.listview.ImageListView (server)' ~ Channel is unrecoverably broken and will be disposed!
01-02 16:34:25.953 15342-15383/? W/InputDispatcher: channel '2e997ac0 com.package.name/com.package.name.Login (server)' ~ Consumer closed input channel or an error occurred.  events=0x9
01-02 16:34:25.953 15342-15383/? E/InputDispatcher: channel '2e997ac0 com.package.name/com.package.name.Login (server)' ~ Channel is unrecoverably broken and will be disposed!
01-02 16:34:25.953 15342-15442/? W/InputDispatcher: Attempted to unregister already unregistered input channel '2ea211d8 com.package.name/com.package.listview.listview.ImageListView (server)'
01-02 16:34:25.953 15342-15509/? W/InputDispatcher: Attempted to unregister already unregistered input channel '2e997ac0 com.package.name/com.package.name.Login (server)'

@RRR , see I am new to android , can you some amendments in above code to work Please — raj, Jan 02 '16 at 12:07
refer this http://stackoverflow.com/questions/16333754/how-to-customize-listview-using-baseadapter — Ravi, Jan 02 '16 at 12:08
Change to `View listViewItem = inflater.inflate(R.layout.image_list_view, parent, true); ` — bGorle, Jan 02 '16 at 12:08
@bGrole its still not working , please suggest something else — raj, Jan 02 '16 at 12:14
@RRR see the url reference above i have mentioned , in that he already set imageurl and bitmap , i just added one more string name so it is giving error idk how to set name string in textview — raj, Jan 02 '16 at 12:15
Please post your CustomList.java in full. There is a NullPointerException at line 45 and there are less lines than that in the code you posted — OneCricketeer, Jan 02 '16 at 13:22

Fuseteam · Answer 1 · 2016-01-02T14:49:34.710

0

the problem can be identified using the following line from your logcat

at com.package.listview.listview.CustomList.getView(CustomList.java:45)

This means that in your file CustomList.java on line 45 you may have used something that is not properly initialized or something that doesn't even exist yet

edited Jan 02 '16 at 14:49

answered Jan 02 '16 at 13:17

Fuseteam

307
2
14

For suggestions or seeking clarifications, please leave a comment to the question. Its generally not a good idea to have answers that use "probably" and "suspect" words. – Wand Maker Jan 02 '16 at 14:12
This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post - you can always comment on your own posts, and once you have sufficient [reputation](http://stackoverflow.com/help/whats-reputation) you will be able to [comment on any post](http://stackoverflow.com/help/privileges/comment). - [From Review](/review/low-quality-posts/10752643) – Wand Maker Jan 02 '16 at 14:12
@WandMaker I believe this is the answer I'm not asking for clarification nor do I have critique on the question. Since I do not know what he wrote on line 45 I can't say for sure but I'm 90% certain that he used something not properly initialized inhis code on line 45 of the file CustomList.java and that is causing the problem and yes I have not enough reputation to comment since people like to down vote my questions instead of providing critique or requesting clarifications if I could I would have commented first to be sure what is written in his code on line 45 of his file CustomList. Java – Fuseteam Jan 02 '16 at 14:37
It was part of "Low quality posts" queue I was reviewing, based on that I have left my feedback. I have not downvoted your answer though. Normally, I have seen experienced SO users seek clarifications in comments section and only when they are sure - they post it an answer – Wand Maker Jan 02 '16 at 14:58
@WandMaker yes I would've done that if I could sigh hopefully I can some rep back with this post if the asker is willing to try at least – Fuseteam Jan 02 '16 at 15:03

Adding text and images to a listview

1 Answers1