嘿朋友我正在尝试使用RecyclerView实现搜索视图，但收到错误no adapter attached skipping layout无法解决此问题我需要帮助
这是我的所有代码plz帮助
//我的连接器类
public class Connector {
public static HttpURLConnection connect(String urlAddress)
{
try {
URL url=new URL(urlAddress);
HttpURLConnection conn=(HttpURLConnection) url.openConnection();
//set propertiecs
conn.setRequestMethod("POST");
conn.setConnectTimeout(20000);
conn.setReadTimeout(20000);
conn.setDoInput(true);
conn.setDoOutput(true);
//return
return conn;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
//我的DataPackager类
public class DataPackager {
String query;
public DataPackager(String query) {
this.query = query;
}
public String packData()
{
JSONObject jo=new JSONObject();
StringBuffer queryString=new StringBuffer();
try {
jo.put("Query",query);
Boolean firstValue=true;
Iterator it=jo.keys();
do {
String key=it.next().toString();
String value=jo.get(key).toString();
if (firstValue){
firstValue=false;
}else {
queryString.append("&");
}
queryString.append(URLEncoder.encode(key,"UTF-8"));
queryString.append("=");
queryString.append(URLEncoder.encode(value,"UTF-8"));
}while (it.hasNext());
return queryString.toString();
} catch (JSONException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return null;
}
}
//我的Parser类
public class Parser extends AsyncTask<Void,Void,Integer> {
String data;
RecyclerView rv;
Context c;
ArrayList<String>name=new ArrayList<>();
public Parser(Context c, String data, RecyclerView rv) {
this.data = data;
this.rv = rv;
this.c = c;
}
@Override
protected Integer doInBackground(Void... params) {
return this.parse();
}
@Override
protected void onPostExecute(Integer integer) {
super.onPostExecute(integer);
if(integer==1)
{
rv.setAdapter(new MyAdapter(c,name));
}else{
Toast.makeText(c,"Unable to pass",Toast.LENGTH_SHORT).show();
}
}
private int parse()
{
try{
JSONArray ja=new JSONArray(data);
JSONObject jo=null;
name.clear();
for (int i=0;i<ja.length();i++){
jo=ja.getJSONObject(i);
String nameo=jo.getString("Name");
name.add(nameo);
}
return 1;
} catch (JSONException e) {
e.printStackTrace();
}
return 0;
}
}
//我的SenderReciver类
public class SenderReciver extends AsyncTask<Void,Void,String> {
Context c;
String query;
ProgressDialog pd;
String urlAddress;
RecyclerView rv;
ImageView noDataImg,noNetworkimg;
public SenderReciver(Context c, String query, String urlAddress,RecyclerView rv,ImageView...imageViews) {
this.c = c;
this.query = query;
this.urlAddress = urlAddress;
this.rv = rv;
this.noDataImg = imageViews[0];
this.noNetworkimg = imageViews[1];
}
@Override
protected void onPreExecute() {
super.onPreExecute();
pd=new ProgressDialog(c);
pd.setTitle("Search");
pd.setMessage("finding user plz wait");
pd.show();
}
@Override
protected String doInBackground(Void... params) {
return this.sendAndRecive();
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
pd.dismiss();
rv.setAdapter(null);
if(result !=null){
if(! result.contains("null"))
{
Parser p=new Parser(c,result,rv);
p.execute();
noNetworkimg.setVisibility(View.INVISIBLE);
noDataImg.setVisibility(View.INVISIBLE);
}else{
noNetworkimg.setVisibility(View.INVISIBLE);
noDataImg.setVisibility(View.VISIBLE);
}
}else{
noNetworkimg.setVisibility(View.VISIBLE);
noDataImg.setVisibility(View.INVISIBLE);
}
}
private String sendAndRecive()
{
HttpURLConnection conn = Connector.connect(urlAddress);
if (conn==null)
{
return null;
}
try
{
OutputStream os=conn.getOutputStream();
BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(os));
bw.write(new DataPackager(query).packData());
bw.flush();
//RELEASE RES
bw.close();
os.close();
//resopns
int responseCode=conn.getResponseCode();
StringBuffer response =new StringBuffer();
if(responseCode==conn.HTTP_OK)
{
InputStream is=conn.getInputStream();
BufferedReader br=new BufferedReader(new InputStreamReader(is));
String line;
if (br !=null)
{
while ((line=br.readLine()) !=null)
{
response.append(line+"\n");
}
}else{
return null;
}
br.close();
is.close();
return response.toString();
}else
{
return String.valueOf(responseCode);
}
}catch(IOException e){
e.printStackTrace();
}
return null;
}
}
//我的MyAdapter类
public class MyAdapter extends RecyclerView.Adapter<MyHolder> {
Context c;
ArrayList<String> name;
public MyAdapter(Context c, ArrayList<String> name){
this.c=c;
this.name=name;
}
@Override
public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v= LayoutInflater.from(parent.getContext()).inflate(R.layout.model,parent,false);
MyHolder holder=new MyHolder(v);
return holder;
}
@Override
public void onBindViewHolder(MyHolder holder, int position) {
holder.nameTxt.setText(name.get(position));
}
@Override
public int getItemCount() {
return name.size();
}
} //我的MyHolder课程
public class MyHolder extends RecyclerView.ViewHolder {
TextView nameTxt;
public MyHolder(View itemView) {
super(itemView);
nameTxt = (TextView) itemView.findViewById(R.id.nameTxt);
}
}
最后是我的搜索课
public class Search extends AppCompatActivity {
RecyclerView rv;
SearchView sv;
ImageView nodataImg,noNetworkImg;
String urlAddress="http://10.0.2.2/shareknowledge/search.php";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.search);
rv=(RecyclerView) findViewById(R.id.rv);
rv.setLayoutManager(new LinearLayoutManager(this));
sv=(SearchView)findViewById(R.id.sv);
nodataImg=(ImageView) findViewById(R.id.nodataImg);
noNetworkImg=(ImageView) findViewById(R.id.noserver);
sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
SenderReciver sr=new SenderReciver(Search.this,query,urlAddress,rv,nodataImg,noNetworkImg);
sr.execute();
return false;
}
@Override
public boolean onQueryTextChange(String query) {
SenderReciver sr=new SenderReciver(Search.this,query,urlAddress,rv,nodataImg,noNetworkImg);
sr.execute();
return false;
}
});
}
}
即使我附上
，为什么会出现此错误if(integer==1)
{
rv.setAdapter(new MyAdapter(c,name));
}else{
Toast.makeText(c,"Unable to pass",Toast.LENGTH_SHORT).show();
}
然后还有一部分是真正的PLZ帮助