Android 无法从parse.com检索数组

我在parse.com dashboard中创建了此数组列。我可以从我的应用程序在数组中添加值，但我无法获取数组或列表，并且使用iteven size上的任何函数在该行上给出空点异常

我使用了很多解决方案，但没有一个有效

我的代码出现了错误

real = (TextView) v.findViewById(R.id.realtext);
        fake = (TextView) v.findViewById(R.id.faketext);
        realbutton = (ImageButton) v.findViewById(R.id.realbutton);
        fakebutton = (ImageButton) v.findViewById(R.id.fakebutton);
        real.setText(String.valueOf(news.getRealvote()));
        fake.setText(String.valueOf(news.getFake()));
fakebutton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                news.setuserArray(news.getAuthor().getUsername());
                List<ParseObject> a = news.getUserArray();


                Toast.makeText(c, a.toString(), Toast.LENGTH_SHORT).show();//any thing with a.size() etc anything gives error

                news.setFake();
                news.saveInBackground();
                fake.setText(String.valueOf(news.getFake()));

                realbutton.setVisibility(View.GONE);
                fakebutton.setVisibility(View.GONE);

            }
        });

我尝试了很多，但没有成功。plss帮助我检索阵列

你要的是列表适配器吗

public class Customnewslistview extends ParseQueryAdapter<News> {

Context c;

public Customnewslistview(Context context) {
    super(context, "News");
    c = context;
}

@Override
public View getItemView(final News news, View v, ViewGroup parent) {

    if (v == null) {
        final TextView real;
        final TextView fake;
        final ImageButton realbutton;
        final ImageButton fakebutton;
        final ProgressBar loader;
        v = View.inflate(getContext(), R.layout.item_list_news_public, null);

        loader = (ProgressBar) v.findViewById(R.id.eachnewsloder);

        ParseImageView newsImage = (ParseImageView) v
                .findViewById(R.id.icon);
        ParseFile photoFile = news.getParseFile("photo");
        if (photoFile != null) {
            newsImage.setParseFile(photoFile);
            newsImage.loadInBackground(new GetDataCallback() {
                @Override
                public void done(byte[] data, ParseException e) {
                    Log.d("done pic", data.toString());
                    loader.setVisibility(View.GONE);
                }
            });
        } else {
            loader.setVisibility(View.GONE);
            newsImage.setBackgroundResource(R.drawable.image40);
        }

        TextView titleTextView = (TextView) v.findViewById(R.id.text1);
        titleTextView.setText(news.getTitle());
        // trying real fake buttons
        real = (TextView) v.findViewById(R.id.realtext);
        fake = (TextView) v.findViewById(R.id.faketext);
        realbutton = (ImageButton) v.findViewById(R.id.realbutton);
        fakebutton = (ImageButton) v.findViewById(R.id.fakebutton);
        real.setText(String.valueOf(news.getRealvote()));
        fake.setText(String.valueOf(news.getFake()));
        realbutton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                news.setuserArray(news.getAuthor().toString());
                news.setRealvote();
                news.saveInBackground();
                real.setText(String.valueOf(news.getRealvote()));

                Toast.makeText(getContext(), "No Cheating",
                        Toast.LENGTH_SHORT).show();

                realbutton.setVisibility(View.GONE);
                fakebutton.setVisibility(View.GONE);

            }
        });
        fakebutton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                news.setuserArray(news.getAuthor().getUsername());
                List<ParseObject> a=null;
                try {
                    a = news.fetchIfNeeded().getList("users_rated");
                } catch (ParseException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }


                Toast.makeText(c, a.toString(), Toast.LENGTH_SHORT).show();

                news.setFake();
                news.saveInBackground();
                fake.setText(String.valueOf(news.getFake()));

                realbutton.setVisibility(View.GONE);
                fakebutton.setVisibility(View.GONE);

            }
        });
        titleTextView.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Dialog d = new Dialog(c);
                d.setContentView(R.layout.publicnewsdialog);
                d.setTitle("News");
                TextView text = (TextView) d.findViewById(R.id.dialogtext);
                text.setText(news.getTitle());
                // parsing image
                ParseImageView newsImage = (ParseImageView) d
                        .findViewById(R.id.dialogimage);
                ParseFile photoFile = news.getParseFile("photo");
                if (photoFile != null) {
                    newsImage.setParseFile(photoFile);
                    newsImage.loadInBackground(new GetDataCallback() {
                        @Override
                        public void done(byte[] data, ParseException e) {
                            Log.d("done pic", data.toString());

                        }
                    });
                } else {
                    loader.setVisibility(View.GONE);
                    newsImage.setBackgroundResource(R.drawable.image40);
                }
                d.show();

            }
        });
    }

    return v;
}

}

---

这是我用来获取TrackedLocation对象数据库列表的方法：

---

对将在“完成”回调中收到的ParseObject的数据列表执行所需操作。

尝试news.fetchIfNedded.getUserArray；给出错误：致命异常：main 12-06 20:17:04.777:E/AndroidRuntime7569:java.lang.IllegalStateException:ParseObject没有此键的数据。需要调用fetchif来获取数据。12-06 20:17:04.777:E/AndroidRuntime7569:at com.parse.ParseObject.checkGetAccessParseObject.java:2793 12-06 20:17:04.777:E/AndroidRuntime7569:at com.parse.ParseObject.getStringParseObject.java:2351 12-06 20:17:04.777:E/AndroidRuntime7569:at com.parse.ParseUser.getUsernameParseUser.java:275显示getListString方法getListString来自parse.com apinahh..dat不起作用…它给了我一个具有该特定值的所有行的列表..但是这里我想要一个数组，它以不同的方式存储每一行..n我想要为适配器中的每一行提取该数组@Emil adz然后删除此行：query.whereequaltoimi，helpUtils.getDeviceideQualsimi；您将拥有此表中的最后1000个条目。

public void setuserArray(String file) {
    addUnique("users_rated", file);
}

public class Customnewslistview extends ParseQueryAdapter<News> {

Context c;

public Customnewslistview(Context context) {
    super(context, "News");
    c = context;
}

@Override
public View getItemView(final News news, View v, ViewGroup parent) {

    if (v == null) {
        final TextView real;
        final TextView fake;
        final ImageButton realbutton;
        final ImageButton fakebutton;
        final ProgressBar loader;
        v = View.inflate(getContext(), R.layout.item_list_news_public, null);

        loader = (ProgressBar) v.findViewById(R.id.eachnewsloder);

        ParseImageView newsImage = (ParseImageView) v
                .findViewById(R.id.icon);
        ParseFile photoFile = news.getParseFile("photo");
        if (photoFile != null) {
            newsImage.setParseFile(photoFile);
            newsImage.loadInBackground(new GetDataCallback() {
                @Override
                public void done(byte[] data, ParseException e) {
                    Log.d("done pic", data.toString());
                    loader.setVisibility(View.GONE);
                }
            });
        } else {
            loader.setVisibility(View.GONE);
            newsImage.setBackgroundResource(R.drawable.image40);
        }

        TextView titleTextView = (TextView) v.findViewById(R.id.text1);
        titleTextView.setText(news.getTitle());
        // trying real fake buttons
        real = (TextView) v.findViewById(R.id.realtext);
        fake = (TextView) v.findViewById(R.id.faketext);
        realbutton = (ImageButton) v.findViewById(R.id.realbutton);
        fakebutton = (ImageButton) v.findViewById(R.id.fakebutton);
        real.setText(String.valueOf(news.getRealvote()));
        fake.setText(String.valueOf(news.getFake()));
        realbutton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                news.setuserArray(news.getAuthor().toString());
                news.setRealvote();
                news.saveInBackground();
                real.setText(String.valueOf(news.getRealvote()));

                Toast.makeText(getContext(), "No Cheating",
                        Toast.LENGTH_SHORT).show();

                realbutton.setVisibility(View.GONE);
                fakebutton.setVisibility(View.GONE);

            }
        });
        fakebutton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                news.setuserArray(news.getAuthor().getUsername());
                List<ParseObject> a=null;
                try {
                    a = news.fetchIfNeeded().getList("users_rated");
                } catch (ParseException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }


                Toast.makeText(c, a.toString(), Toast.LENGTH_SHORT).show();

                news.setFake();
                news.saveInBackground();
                fake.setText(String.valueOf(news.getFake()));

                realbutton.setVisibility(View.GONE);
                fakebutton.setVisibility(View.GONE);

            }
        });
        titleTextView.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Dialog d = new Dialog(c);
                d.setContentView(R.layout.publicnewsdialog);
                d.setTitle("News");
                TextView text = (TextView) d.findViewById(R.id.dialogtext);
                text.setText(news.getTitle());
                // parsing image
                ParseImageView newsImage = (ParseImageView) d
                        .findViewById(R.id.dialogimage);
                ParseFile photoFile = news.getParseFile("photo");
                if (photoFile != null) {
                    newsImage.setParseFile(photoFile);
                    newsImage.loadInBackground(new GetDataCallback() {
                        @Override
                        public void done(byte[] data, ParseException e) {
                            Log.d("done pic", data.toString());

                        }
                    });
                } else {
                    loader.setVisibility(View.GONE);
                    newsImage.setBackgroundResource(R.drawable.image40);
                }
                d.show();

            }
        });
    }

    return v;
}

}

ParseQuery<ParseObject> query = ParseQuery.getQuery("TrackedLocation"); 
query.whereEqualTo("imei", helpUtils.getDeviceIDEqualsIMEI());
query.setLimit(1000);
query.findInBackground(new FindCallback<ParseObject>() 
{
    @Override
     public void done(List<ParseObject> dataList, ParseException e) {}
});