自动完成的机器人不工作与动态数据人不、自动完成、机器、动态
2023-09-07 16:15:10
作者：男人╮我戒了
我现在面临的问题，自动完成的机器人。相反，在活动本身硬编码的数据，我试图从其他应用程序动态读取它相匹配的每个键preSS的数据。请在下面找到我的程序，并建议我在哪里，我错了。
请注意：在第一次按键preSS，结果得到填充。如果我清除输入的文本，并输入不同的字符后，结果都没有得到显示在自动完成下拉框。我从其他应用程序上的每一个按键preSS获得，但没有得到填充自动完成下拉框。
我试着用textView.showDropDown（）;和adapter.setNotifyOnChange（真正的）;选项。但是没有用。
包com.util;
进口java.io.BufferedReader中;
进口java.io.IOException异常;
进口的java.io.InputStream;
进口java.io.InputStreamReader中;
进口的java.util.ArrayList;
进口的java.util.List;
进口org.apache.http.HttpEntity;
进口org.apache.http.Htt presponse;
进口org.apache.http.StatusLine;
进口org.apache.http.client.ClientProtocolException;
进口org.apache.http.client.HttpClient;
进口org.apache.http.client.methods.HttpGet;
进口org.apache.http.impl.client.DefaultHttpClient;
进口org.json.JSONArray;
进口org.json.JSONObject;
进口android.app.Activity;
进口android.os.Bundle;
进口android.text.Editable;
进口android.text.TextWatcher;
进口android.util.Log;
进口android.widget.ArrayAdapter;
进口android.widget.AutoCompleteTextView;
公共类HelloAutoCompleteActivity延伸活动{
名单的国家=新的ArrayList（）;
字符串URL =; //一些应用程序URL
AutoCompleteTextView TextView的;
ArrayAdapter＆LT;字符串＆GT;适配器;
@覆盖
公共无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.main）;
TextView的=（AutoCompleteTextView）findViewById（R.id.autocomplete_country）;
textView.addTextChangedListener（新CostomTextWatcher（））;
textView.setThreshold（1）;
适配器=新的ArrayAdapter＆LT;字符串＆GT;（这一点，R.layout.list_item，国家）;
textView.setAdapter（适配器）;
}
私有类CostomTextWatcher实现TextWatcher {
@覆盖
公共无效afterTextChanged（编辑S）{
}
@覆盖
公共无效beforeTextChanged（CharSequence中，诠释开始，诠释计数，
之后INT）{
}
@覆盖
公共无效onTextChanged（CharSequence中，诠释开始，诠释之前，
诠释计数）{
如果（s.length（）大于0）{
countries.clear（）;
串readTwitterFeed = readFeed（s.toString（））;
的System.out.println（readTwitterFeed）;
尝试 {
JSONObject的menuObject =新的JSONObject（readTwitterFeed）;
JSONArray menuitemArray = menuObject
.getJSONArray（objectNameList）;
的for（int i = 0; I＆LT; menuitemArray.length（）;我++）{
的System.out.println（menuitemArray.get（一））;
countries.add（menuitemArray.get（ⅰ）的ToString（））;
}
// adapter.notifyDataSetChanged（）;
// adapter.setNotifyOnChange（真正的）;
// textView.setAdapter（适配器）;
// textView.setThreshold（1）;
// textView.setAdapter（适配器）;
// textView.showDropDown（）;
// adapter.setNotifyOnChange（真正的）;
}赶上（例外五）{
e.printStackTrace（）;
}
}
}
}
公共字符串readFeed（字符串VAL）{
StringBuilder的建设者=新的StringBuilder（）;
HttpClient的客户端=新DefaultHttpClient（）;
HTTPGET HTTPGET =新HTTPGET（
URL）;
尝试 {
HTT presponse响应= client.execute（HTTPGET）;
状态行状态行= response.getStatusLine（）;
INT状态code = statusLine.getStatus code（）;
如果（状态code == 200）{
的System.out.println（200）;
HttpEntity实体= response.getEntity（）;
InputStream的内容= entity.getContent（）;
的BufferedReader读卡器=新的BufferedReader（
新InputStreamReader的（内容））;
串线;
而（（行= reader.readLine（））！= NULL）{
builder.append（线）;
}
} 其他 {
的System.out.println（else块）;
Log.e（HelloAutoCompleteActivity.class.toString（），
无法下载文件）;
}
}赶上（ClientProtocolException E）{
e.printStackTrace（）;
}赶上（IOException异常E）{
e.printStackTrace（）;
}
返回builder.toString（）;
}
}
解决方案
您可以使用Filter接口来实现这一点。原来Filter.performFiltering（）被调用关闭UI线程只是为这种类型的目的。下面是一些code我用它来做到这一点：
过滤器过滤器=新的过滤器（）{
@覆盖
公众的CharSequence convertResultToString（对象resultValue）{
返回resultValue.toString（）;
}
@覆盖
保护FilterResults performFiltering（CharSequence中的CharSequence）{
如果（CharSequence的== NULL）返回NULL;
尝试 {
//此调用打服务器，我正在寻找的名称和解析JSON返回的第25结果
PagedResult结果= searchByName（charSequence.toString（），1，25，真）;
FilterResults filterResults =新FilterResults（）;
filterResults.values = results.getResults（）;
filterResults.count = results.getResults（）的大小（）。
返回filterResults;
}赶上（JSONException E）{
返回新FilterResults（）;
}
}
@覆盖
保护无效publishResults（CharSequence中的CharSequence，FilterResults filterResults）{
如果（filterResults！= NULL）{
adapter.clear（）;
adapter.addAll（（名单＆LT;为MyObject＆GT;）filterResults.values）;
}
}
};
然后使用过滤器：
私人AutoCompleteTextView beverageName;
...
beverageName = findViewById（R.id.beverageName）;
ListAdapter适配器= ...
adapter.setFilter（过滤器）;
beverageName.setAdapter（适配器）;
或U可以使用这个链接也
http://www.grobmeier.de/android-autocomplete-with-json-data-served-by-struts-2-05122011.htmlI am facing problem with auto complete in android. Instead of hard coding data in Activity itself, I tried to read the data dynamically from other application on every key press which is matched. Please find below my program and suggest me where I am wrong.
Note: at the first time key press, the results are getting populated. After that if I clear the entered text and enter different character, the results are not getting shown in the auto complete drop down box. I am getting from other application on every key press but not getting populated in auto complete drop down box.
I tried with textView.showDropDown(); and adapter.setNotifyOnChange(true); options. But no use.
package com.util;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
public class HelloAutoCompleteActivity extends Activity {
List countries = new ArrayList();
String url = ""; //some application url
AutoCompleteTextView textView;
ArrayAdapter<String> adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
textView = (AutoCompleteTextView) findViewById(R.id.autocomplete_country);
textView.addTextChangedListener(new CostomTextWatcher());
textView.setThreshold(1);
adapter = new ArrayAdapter<String>(this, R.layout.list_item, countries);
textView.setAdapter(adapter);
}
private class CostomTextWatcher implements TextWatcher {
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
if (s.length() > 0) {
countries.clear();
String readTwitterFeed = readFeed(s.toString());
System.out.println(readTwitterFeed);
try {
JSONObject menuObject = new JSONObject(readTwitterFeed);
JSONArray menuitemArray = menuObject
.getJSONArray("objectNameList");
for (int i = 0; i < menuitemArray.length(); i++) {
System.out.println(menuitemArray.get(i));
countries.add(menuitemArray.get(i).toString());
}
// adapter.notifyDataSetChanged();
// adapter.setNotifyOnChange(true);
// textView.setAdapter(adapter);
// textView.setThreshold(1);
// textView.setAdapter(adapter);
// textView.showDropDown();
// adapter.setNotifyOnChange(true);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
public String readFeed(String val) {
StringBuilder builder = new StringBuilder();
HttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(
url);
try {
HttpResponse response = client.execute(httpGet);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) {
System.out.println("200");
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(
new InputStreamReader(content));
String line;
while ((line = reader.readLine()) != null) {
builder.append(line);
}
} else {
System.out.println("else block");
Log.e(HelloAutoCompleteActivity.class.toString(),
"Failed to download file");
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return builder.toString();
}
}
解决方案You can use the Filter interface to implement this as well. Turns out Filter.performFiltering() is called off the UI thread just for this type of purpose. Here is some code I use to do this:
Filter filter = new Filter() {
@Override
public CharSequence convertResultToString(Object resultValue) {
return resultValue.toString();
}
@Override
protected FilterResults performFiltering(CharSequence charSequence) {
if( charSequence == null ) return null;
try {
// This call hits the server with the name I'm looking for and parses the JSON returned for the first 25 results
PagedResult results = searchByName( charSequence.toString(), 1, 25, true);
FilterResults filterResults = new FilterResults();
filterResults.values = results.getResults();
filterResults.count = results.getResults().size();
return filterResults;
} catch (JSONException e) {
return new FilterResults();
}
}
@Override
protected void publishResults(CharSequence charSequence, FilterResults filterResults) {
if( filterResults != null ) {
adapter.clear();
adapter.addAll( (List<MyObject>)filterResults.values );
}
}
};
Then using the Filter:
private AutoCompleteTextView beverageName;
...
beverageName = findViewById( R.id.beverageName );
ListAdapter adapter = ...
adapter.setFilter(filter);
beverageName.setAdapter(adapter);
or u can use this link also
http://www.grobmeier.de/android-autocomplete-with-json-data-served-by-struts-2-05122011.html
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