我有11个文本文件，每个文件包含50-60行。我已阅读所有文件并在recyclerview中显示。我使用asynctask来跟踪进度条的进度。我也使用日志来查看读取行。我发现阅读时间很短，但阅读后，在recyclerview中显示数据需要5-6秒。这是为什么会造成的？我该怎么做才能解决这个问题？如果有数千个文本文件，我为什么要这样做？
代码读取文件和绑定
AsyncTask<Void,Void,Void> task = new AsyncTask<Void, Void, Void>() {
ProgressDialog progressDialog;
@Override
protected void onPreExecute() {
progressDialog = ProgressDialog.show(GrammerDetails.this,
"Loading", "Please Wait for a while");
}
@Override
protected Void doInBackground(Void... voids) {
getFromFilesbagdhara(id,realm);
SharedPreferences.Editor editor = preferences.edit();
editor.putBoolean("first_bagdhara",false);
editor.apply();
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
inflateData(listGrammerItem);
progressDialog.dismiss();
}
}.execute();
private void getFromFilesbagdhara(String id, Realm realm) {
String directory = "Grammer/Bagdhara";
AssetManager man = getAssets();
BufferedReader reader = null;
try {
String[] files = man.list(directory);
for (int i =0;i<files.length;i++){
String fileName = files[i];
reader = new BufferedReader(
new InputStreamReader(getAssets().open(directory+"/" + fileName),
"UTF-8"));
String line;
Log.e("File",files[i]);
while ((line = reader.readLine()) != null) {
Log.e("line",line);
// String[] text = line.split(" ");
String a = line.substring(0,line.indexOf("(")-1);
String b = line.substring(line.indexOf("(")+1,line.indexOf(")"));
String wordOne = a;
// String dummyTwo = text[1];
String wordTwo = b; //dummyTwo.substring(1,dummyTwo.length()-1);
final ClassGrammerItem classGrammerItem = new ClassGrammerItem(wordOne,wordTwo,id);
listGrammerItem.add(classGrammerItem);
}
}
} catch (IOException e) {
e.printStackTrace();
}finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
//log the exception
}
}
}
}
private void inflateData(RealmList<ClassGrammerItem> listGrammerItem) {
AdapterGrammerItem adapter = new AdapterGrammerItem(listGrammerItem, GrammerDetails.this);
recyclerView.setAdapter(adapter);
}
适配器：
public class AdapterGrammerItem extends RecyclerView.Adapter<AdapterGrammerItem
.ViewHolderAdapterRecycler> {
RealmList<ClassGrammerItem> activityList = new RealmList<ClassGrammerItem>();
Context context;
private LayoutInflater layoutInflater;
public AdapterGrammerItem(RealmList<ClassGrammerItem> activityList, Context context) {
this.activityList = activityList;
this.context = context;
layoutInflater = LayoutInflater.from(context);
}
@Override
public AdapterGrammerItem.ViewHolderAdapterRecycler onCreateViewHolder(ViewGroup parent, int viewType) {
View view = layoutInflater.inflate(R.layout.recycler_grammer_item, parent, false);
AdapterGrammerItem.ViewHolderAdapterRecycler viewHolder = new AdapterGrammerItem.ViewHolderAdapterRecycler(view);
return viewHolder;
}
@Override
public void onBindViewHolder(AdapterGrammerItem.ViewHolderAdapterRecycler holder, int position) {
ClassGrammerItem currentItem = activityList.get(position);
holder.wordOne.setText(currentItem.getWordOne());
holder.wordTwo.setText(currentItem.getWordTwo());
}
@Override
public int getItemCount() {
return activityList.size();
}
public class ViewHolderAdapterRecycler extends RecyclerView.ViewHolder {
MyTextView wordOne, wordTwo;
public ViewHolderAdapterRecycler(View itemView) {
super(itemView);
wordOne = (MyTextView) itemView.findViewById(R.id.wordOne);
wordTwo = (MyTextView) itemView.findViewById(R.id.wordTwo);
}
}
}