当用户开始在EditText字段中输入时，我希望AutoComplete成为EditText。我已创建此代码
public class PegawaiFragment extends Fragment {
public static PegawaiFragment newInstance() {
PegawaiFragment fragment = new PegawaiFragment();
return fragment;
}
String namapegawai;
AutoCompleteTextView textAutoComplete;
ListView StudentListView;
ProgressBar progressBar;
String HttpUrl = "http://192.168.43.241/Android/MyKoperasi/PegawaiDashboard.php";
List<String> IdList = new ArrayList<>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_pegawai, container, false);
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
namapegawai = prefs.getString(MainActivity.UserName,MainActivity.UserName);
TextView NamaPegawai = v.findViewById(R.id.TextViewNamaPegawai);
NamaPegawai.setText(namapegawai);
textAutoComplete = v.findViewById(R.id.autoCompleteTextView1);
ArrayAdapter adapter = new ArrayAdapter(getActivity(),android.R.layout.simple_list_item_1);
textAutoComplete.setAdapter(adapter);
textAutoComplete.setThreshold(1);
StudentListView = v.findViewById(R.id.listview2);
progressBar = v.findViewById(R.id.progressBar1);
new GetHttpResponse(getActivity()).execute();
//Adding ListView Item click Listener.
StudentListView.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// TODO Auto-generated method stub
//Intent intentSemuaMemberLihat = new Intent(getActivity(),SemuaMemberLihat.class);
// Sending ListView clicked value using intent.
//intentSemuaMemberLihat.putExtra("ListViewValue", IdList.get(position).toString());
//startActivity(intentSemuaMemberLihat);
}
});
return v;
}
// JSON parse class started from here.
class GetHttpResponse extends AsyncTask<Void, Void, Void>
{
public Context context;
String JSonResult;
List<Member> studentList;
public GetHttpResponse(Context context)
{
this.context = context;
}
@Override
protected void onPreExecute()
{
super.onPreExecute();
}
@Override
protected Void doInBackground(Void... arg0)
{
// Passing HTTP URL to HttpServicesClass Class.
HttpServicesClass httpServicesClass = new HttpServicesClass(HttpUrl);
try
{
httpServicesClass.ExecutePostRequest();
if(httpServicesClass.getResponseCode() == 200)
{
JSonResult = httpServicesClass.getResponse();
if(JSonResult != null)
{
JSONArray jsonArray = null;
try {
jsonArray = new JSONArray(JSonResult);
JSONObject jsonObject;
Member member;
studentList = new ArrayList<Member>();
for(int i=0; i<jsonArray.length(); i++)
{
member = new Member();
jsonObject = jsonArray.getJSONObject(i);
// Adding Student Id TO IdList Array.
IdList.add(jsonObject.getString("id").toString());
//Adding Student Name.
member.nama = jsonObject.getString("nama").toString();
//member.nrp = jsonObject.getString("nrp").toString();
studentList.add(member);
}
}
catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
else
{
Toast.makeText(context, httpServicesClass.getErrorMessage(), Toast.LENGTH_SHORT).show();
}
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result)
{
progressBar.setVisibility(View.GONE);
StudentListView.setVisibility(View.VISIBLE);
if(studentList != null) {
ListAdapterClass adapter = new ListAdapterClass(studentList, context);
StudentListView.setAdapter(adapter);
}else
{
Toast.makeText(context, "Tidak ada data ditampilkan", Toast.LENGTH_SHORT).show();
}
}
}
}
此代码显示完美，但是当我开始在autoCompleteTextView1中键入EditText时，没有任何建议名称。我想这就在这里
textAutoComplete = v.findViewById(R.id.autoCompleteTextView1);
ArrayAdapter adapter = new ArrayAdapter(getActivity(),android.R.layout.simple_list_item_1);
textAutoComplete.setAdapter(adapter);
textAutoComplete.setThreshold(1);
但为什么EditText没有显示建议呢？相反，我的ListView在那里完美。
这是我的XML代码
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.network.poeja.mykoperasi.PegawaiFragment">
<TextView
android:id="@+id/TextViewNamaPegawai"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<AutoCompleteTextView
android:layout_weight="1"
android:id="@+id/autoCompleteTextView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="Text Auto Complete"
android:layout_below="@+id/TextViewNamaPegawai">
<requestFocus />
</AutoCompleteTextView>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="50dp"
android:layout_below="@+id/autoCompleteTextView1">
<!-- TODO: Update blank fragment layout -->
<ListView
android:id="@+id/listview2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_below="@+id/logos"
android:layout_centerHorizontal="true"
android:layout_marginTop="50dip"/>
<ProgressBar
android:id="@+id/progressBar1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:visibility="visible" />
</RelativeLayout>
</FrameLayout>
=============== ADAPTER CLASS
public class ListAdapterClass extends BaseAdapter {
Context context;
List<Member> valueList;
public ListAdapterClass(List<Member> listValue, Context context)
{
this.context = context;
this.valueList = listValue;
}
@Override
public int getCount()
{
return this.valueList.size();
}
@Override
public Object getItem(int position)
{
return this.valueList.get(position);
}
@Override
public long getItemId(int position)
{
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
ViewItem viewItem = null;
if(convertView == null)
{
viewItem = new ViewItem();
LayoutInflater layoutInfiater = (LayoutInflater)this.context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = layoutInfiater.inflate(R.layout.listview_item, null);
viewItem.TextViewNama = convertView.findViewById(R.id.textViewNama);
viewItem.TextViewNrp = convertView.findViewById(R.id.textViewNrp);
convertView.setTag(viewItem);
}
else
{
viewItem = (ViewItem) convertView.getTag();
}
viewItem.TextViewNama.setText(valueList.get(position).nama);
viewItem.TextViewNrp.setText(valueList.get(position).nrp);
return convertView;
}
}
class ViewItem
{
TextView TextViewNama, TextViewNrp;
}
答案 0 :(得分：0)
您需要提供Array包含ArrayAdapter的数据。它是适配器将搜索的数据源。以下是如何使用ArrayAdapter和AutoCompleteTextView -
public class MainActivity extends Activity {
String[] data = {"Apple", "Banana", "Cherry", "Date", "Grape", "Kiwi", "Mango", "Pear"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Creating the instance of ArrayAdapter containing list of fruit names
ArrayAdapter<String> adapter = new ArrayAdapter<String>
(this, android.R.layout.simple_list_item_1, data);
//Getting the instance of AutoCompleteTextView
AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
actv.setThreshold(1);//will start working from first character
actv.setAdapter(adapter);//setting the adapter data into the AutoCompleteTextView
actv.setTextColor(Color.RED);
}
}
根据您的AutoCompleteTextView代码。我找到了解决方案。
String[] data = {"Apple", "Banana", "Cherry", "Date", "Grape", "Kiwi", "Mango", "Pear"};
GetHttpResponse getHttpResponse = new GetHttpResponse(getActivity());
getHttpResponse.execute();
textAutoComplete = v.findViewById(R.id.autoCompleteTextView1);
List<Member> studentList = getHttpResponse.getStudentList();
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, studentList.toArray(new String[studentList.size()]));
textAutoComplete.setAdapter(adapter);
textAutoComplete.setThreshold(1);
添加一个从GetHttpResponse类获取studentList的方法 -
// JSON parse class started from here.
class GetHttpResponse extends AsyncTask<Void, Void, Void>
{
public Context context;
String JSonResult;
List<Member> studentList;
public GetHttpResponse(Context context)
{
this.context = context;
}
public ArrayList<Member> getStudentList(){
return this.studentList;
}
@Override
protected void onPreExecute()
{
super.onPreExecute();
}
@Override
protected Void doInBackground(Void... arg0)
{
// Passing HTTP URL to HttpServicesClass Class.
HttpServicesClass httpServicesClass = new HttpServicesClass(HttpUrl);
try
{
httpServicesClass.ExecutePostRequest();
if(httpServicesClass.getResponseCode() == 200)
{
JSonResult = httpServicesClass.getResponse();
if(JSonResult != null)
{
JSONArray jsonArray = null;
try {
jsonArray = new JSONArray(JSonResult);
JSONObject jsonObject;
Member member;
studentList = new ArrayList<Member>();
for(int i=0; i<jsonArray.length(); i++)
{
member = new Member();
jsonObject = jsonArray.getJSONObject(i);
// Adding Student Id TO IdList Array.
IdList.add(jsonObject.getString("id").toString());
//Adding Student Name.
member.nama = jsonObject.getString("nama").toString();
//member.nrp = jsonObject.getString("nrp").toString();
studentList.add(member);
}
}
catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
else
{
Toast.makeText(context, httpServicesClass.getErrorMessage(), Toast.LENGTH_SHORT).show();
}
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result)
{
progressBar.setVisibility(View.GONE);
StudentListView.setVisibility(View.VISIBLE);
if(studentList != null) {
ListAdapterClass adapter = new ListAdapterClass(studentList, context);
StudentListView.setAdapter(adapter);
}else
{
Toast.makeText(context, "Tidak ada data ditampilkan", Toast.LENGTH_SHORT).show();
}
}
}