我正在尝试使用Array Adapter显示自定义建议，建议数据来自数据库。我使用onTextChange从数据库获取数据但未显示建议。使用Neo4j数据库的代码是可以的，我从数据库获取值。我是Android新手。请问有谁能告诉我问题出在哪里？ 这是我的代码。 在此先感谢。
matri_suggestion xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="@+id/imageView_sugg"
android:layout_width="80dp"
android:layout_height="80dp"
android:src="@drawable/ic_launcher" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="5dp"
android:orientation="vertical" >
<TextView
android:id="@+id/matri_sugg_name"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:text="Name" />
<TextView
android:id="@+id/matri_sugg_proEdu"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:text="Profesn,Education" />
<TextView
android:id="@+id/matri_sugg_cityDist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="CurrentCity,Dist" />
</LinearLayout>
</LinearLayout>
MainActivity `
public class MainActivity extends Activity {
AutoCompleteTextView search;
String resultList;
String matri_photo, matri_name, matri_prof_degree, matri_town_dist;
List<AutoCompleteItems> clist = new ArrayList<AutoCompleteItems>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
search = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1);
search.addTextChangedListener(new TextWatcher() {
public Context context;
@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
String temp = arg0.toString();
if (temp.length() > 0) {
try {
resultList = new Matri_Sugg(context).execute(temp)
.get();
setJSONdata(resultList);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});
AutocompleteAdapter adapter = new AutocompleteAdapter(this,
R.layout.matri_suggessions, clist);
search.setAdapter(adapter);
}
void setJSONdata(String result) {
try {
JSONObject obj = new JSONObject(resultList);
// Log.d("in setJSONdata", resultList);
final JSONArray dataArray = obj.getJSONArray("data");
Log.d("data Array", dataArray.length() + "");
MainActivity ma=new MainActivity();
try {
for (int i = 0; i < dataArray.length(); i++) {
ma.matri_photo = dataArray.getJSONArray(i).getString(0);
ma.matri_name = dataArray.getJSONArray(i).getString(1) + " "
+ dataArray.getJSONArray(i).getString(2);
ma.matri_prof_degree = dataArray.getJSONArray(i).getString(3)
+ " " + dataArray.getJSONArray(i).getString(4);
ma.matri_town_dist = dataArray.getJSONArray(i).getString(5)
+ " , " + dataArray.getJSONArray(i).getString(6);
AutoCompleteItems aci = new AutoCompleteItems(
R.drawable.npf, ma.matri_name, ma.matri_prof_degree,
ma.matri_town_dist);
ma.clist.add(aci);
}
} catch (JSONException e) {
e.printStackTrace();
} catch (BufferOverflowException e) {
e.printStackTrace();
}
}
catch (JSONException e) {
e.printStackTrace();
} catch (ArrayIndexOutOfBoundsException r) {
r.printStackTrace();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
` AsynchTask用于从数据库获取值。 的 Matri_Sugg
public class Matri_Sugg extends AsyncTask<String, Void, String> {
String result;
List<String> resultarray;
Array[][] res;
URL url;
String queryString, matri_photo, matri_name, matri_prof_degree, matri_town_dist ;
Context context;
public Matri_Sugg(Context context) {
// TODO Auto-generated constructor stub
this.context = context;
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub\
String query = params[0];
try {
DBConnect.connect();
queryString = "{\"query\":\"match (n:Woftos_Profile),n-[r:Has_Matrimony]->m where m.Status='Active' and n.Gender<>'Male' and (n.First_Name =~ '(?i)"+query+".*' or n.Last_Name=~ '(?i)"+query+".*') return distinct m.Profile_Photo, n.First_Name,n.Last_Name,n.Profession,n.Degree,n.Town_C,n.District,id(m),id(n),n.Gender LIMIT 5\", \"params\":{}}";
DBConnect.sendQuery(queryString);
result = DBConnect.readInputStream();
Log.d("server response", result);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}catch (NullPointerException e) {
// TODO: handle exception
e.printStackTrace();
}
return result;
}
}
AutoCompleteItems
public class AutoCompleteItems {
public int Matri_pic;
public String Name=null;
public String Prof_Edu=null;
public String City_Dist=null;
public AutoCompleteItems(int image, String name, String prof_edu, String city_dist){
this.Matri_pic=image;
this.Name=name;
this.Prof_Edu=prof_edu;
this.City_Dist=city_dist;
}
}
AutoCompleteAdapter
public class AutocompleteAdapter extends ArrayAdapter<AutoCompleteItems>{
public List<AutoCompleteItems> data;
public Context context;
public View row;
public int resource = R.layout.matri_suggessions;
public AutocompleteAdapter(Context context, int resource,
List<AutoCompleteItems> objects) {
super(context, resource, objects);
this.data = new ArrayList<AutoCompleteItems>();
this.context = context;
this.data.addAll(objects);
}
static class DataHolder {
ImageView iv;
TextView txt_name, txt_prof_edu, txt_city_dist;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
row = convertView;
DataHolder holder = new DataHolder();
if (row == null) {
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
row = inflater.inflate(resource, parent, false);
holder.iv = (ImageView) row.findViewById(R.id.imageView_sugg);
holder.txt_name = (TextView) row.findViewById(R.id.matri_sugg_name);
holder.txt_prof_edu = (TextView) row.findViewById(R.id.matri_sugg_proEdu);
holder.txt_city_dist = (TextView) row.findViewById(R.id.matri_sugg_cityDist);
row.setTag(holder);
} else {
holder = (DataHolder) row.getTag();
AutoCompleteItems info = data.get(position);
holder.iv.setImageResource(info.Matri_pic);
holder.txt_name.setText(info.Name);
holder.txt_prof_edu.setText(info.Prof_Edu);
holder.txt_city_dist.setText(info.City_Dist);
}
return row;
}
}