Question

我正在创建一个应用程序，在我的文本文件中搜索给定的搜索词或首字母缩略词。这是我真正创建的第一个应用程序。文本文件的格式如下：acronym％term％definition。我有一个InputStream和一个BufferedReader逐行遍历文件。然后我将其分解为百分号，并使用我创建的Triple类将字符串放入三元组中，并将Triple添加到ArrayList中。我的下一个函数应该通过Triple的ArrayList搜索包含搜索首字母缩写词或术语的那个。如果找不到首字母缩略词，则转到InvalidAcronym活动。如果它存在，则进入ValidAcronym活动。出于某种原因，触发的唯一活动是InvalidAcronym活动。我认为这与将行添加到ArrayList有关。我最初使用HashMaps只使用了首字母缩略词和定义。有人可以帮我吗？这是我的代码：

package com.redacted.laurenanderson.acronymlookup;

import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.util.Pair;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageButton;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;


public class Search extends AppCompatActivity{
    public EditText mEdit;
    public static String currAc;
   // public static HashMap<String,String> acros = new HashMap<String,String>(){{
    //add all currently known thingies.

//}};
public static ArrayList<Triple> acros2 = new ArrayList<Triple>();



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_search);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    InputStream is = this.getResources().openRawResource(R.raw.acronyms2);
    BufferedReader reader = new BufferedReader(new InputStreamReader(is));

    String[] str;
    //String FILENAME = "acronyms.txt";
    String FILENAME = "acronyms2.txt";



    try {
        String s = reader.readLine();
        while (s != null){
            //str = s.split(" ",2);
            //acros.put(str[0],str[1]);
            //THIS IS GOING TO BE THE REPLACEMENT
            str = s.split("%",3);
            System.out.println(str.toString());
            Triple<String,String,String> acro = new Triple<String,String,String>(str[0],str[1],str[2]);
            acros2.add(acro);
            s = reader.readLine();
        }

    }
    catch(IOException e){
        System.out.println("OH NO");
        return;
    }


    mEdit = (EditText)findViewById(R.id.acroterm);
    //FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.home);
    //fab.setImageResource(R.drawable.ic_search);
    ImageButton fab = (ImageButton) findViewById(R.id.search);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {


         /*   if(acros.containsKey(mEdit.getText().toString())){
                currAc = mEdit.getText().toString();
               Intent intent1 = new Intent(view.getContext(), ValidAcronym.class);
                view.getContext().startActivity(intent1);
            }
            else{
                Intent intent2 = new Intent(view.getContext(), InvalidAcronym.class);
                view.getContext().startActivity(intent2);
            }*/

           for( Triple triple: acros2){
                currAc = mEdit.getText().toString();
                if(triple.contains(currAc)){
                    Intent intent1 = new Intent(view.getContext(), ValidAcronym.class);
                    view.getContext().startActivity(intent1);
                }

            }
            Intent intent2 = new Intent(view.getContext(), InvalidAcronym.class);
            view.getContext().startActivity(intent2);


        }
    });
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
/*public HashMap<String,String> getMap(){
    return acros;
}*/
public ArrayList<Triple> getList(){return acros2;}

/*public static Pair<String,String> returnAcro(String s){
    Pair<String,String> p = new Pair<String,String>(s,acros.get(s));
    //Triple<String,String,String> p = new Triple<String,String,String>(s, triple.second(),triple.third());
    return p;
}*/
public static Triple<String,String,String> returnAcro2(String s){
    for(Triple triple : acros2){
        if(triple.contains(s)){
            return triple;
        }
    }
    return null;
}}

Answer 1

两个活动都可能已经开始。我没有运行你的代码。但似乎InvalidAcronym Activity在ValidAcronym之后启动，因此可见。

     for( Triple triple: acros2){
            currAc = mEdit.getText().toString();
            if(triple.contains(currAc)){
                Intent intent1 = new Intent(view.getContext(), ValidAcronym.class);
                view.getContext().startActivity(intent1);
            }

     }
        Intent intent2 = new Intent(view.getContext(), InvalidAcronym.class);
        view.getContext().startActivity(intent2);

开始活动后，执行不会停止。因此，即使在字符串匹配后，它也会启动InvalidAcronym。您可以使用标记和中断，如下所示。

      boolean flag = true;
      for( Triple triple: acros2){
            currAc = mEdit.getText().toString();
            if(triple.contains(currAc)){
                Intent intent1 = new Intent(view.getContext(), ValidAcronym.class);
                view.getContext().startActivity(intent1);
                flag = false;
                break;
            }
      }
        Intent intent2 = new Intent(view.getContext(), InvalidAcronym.class);
        if(flag){
            view.getContext().startActivity(intent2);
        }

Answer 2

所以在onClickListener里面的原始代码中：

/*It goes through this loop */
for( Triple triple: acros2){
     currAc = mEdit.getText().toString();
     /*Matches at the contains*/
     if(triple.contains(currAc)){
            Intent intent1 = new Intent(view.getContext(), ValidAcronym.class);
            view.getContext().startActivity(intent1);
            /*Starts The activity*/
     }
     /*Keeps Going*/
}
/*Still going*/
Intent intent2 = new Intent(view.getContext(), InvalidAcronym.class);
view.getContext().startActivity(intent2);
/*Starts the InvalidAcronym activity, and shows it on top of everything will happen whether or not the acronym is valid*/

所以要解决它：

for( Triple triple: acros2){
    currAc = mEdit.getText().toString();
    if(triple.contains(currAc)){
        Intent intent1 = new Intent(view.getContext(), ValidAcronym.class);
        view.getContext().startActivity(intent1);
        /*end the onClick function early because it is valid and we don't need to keep going*/
        //This should show the correct activity now.
        return;
    }

}
//This won't be hit when it is valid
Intent intent2 = new Intent(view.getContext(), InvalidAcronym.class);
view.getContext().startActivity(intent2);

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