Intent не запускает активность (java.lang.RuntimeException: не удается запустить активность)

Question

Я пытаюсь начать работу с намерением, но активность не начнется.

Вот ошибка я получаю:

06-09 10:32:16.031 28535-28535/com.fluffyclouds.satroots E/AndroidRuntime: FATAL EXCEPTION: main 
Process: com.fluffyclouds.satroots, PID: 28535 
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.fluffyclouds.satroots/com.fluffyclouds.satroots.AfterSessionActivity}: java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
    at android.app.ActivityThread.-wrap11(ActivityThread.java) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:148) 
    at android.app.ActivityThread.main(ActivityThread.java:5422) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
    Caused by: java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0 
    at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255) 
    at java.util.ArrayList.set(ArrayList.java:481) 
    at com.fluffyclouds.satroots.AfterSessionActivity.onCreate(AfterSessionActivity.java:81) 
    at android.app.Activity.performCreate(Activity.java:6251) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
    at android.app.ActivityThread.-wrap11(ActivityThread.java) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:148) 
    at android.app.ActivityThread.main(ActivityThread.java:5422) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

Я нашел несколько сообщений, как это, но ответы либо не применяются для меня или не похоже на работу.

Вот мой манифест:

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.fluffyclouds.satroots"> 
<application 
    android:allowBackup="true" 
    android:icon="@mipmap/ic_launcher" 
    android:label="@string/app_name" 
    android:supportsRtl="true" 
    android:theme="@style/AppTheme"> 
    <activity 
     android:name=".StartActivity" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme"> 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
    <activity 
     android:name=".SessionActivity" 
     android:label="@string/title_activity_session" 
     android:theme="@style/AppTheme" /> 
    <activity 
     android:name=".AfterSessionActivity" 
     android:label="End Report" 
     android:theme="@style/AppTheme"> 
    </activity> 
</application> 

Вот часть первоначальной активности, которая запускает намерение:

Intent intent=new Intent(SessionActivity.this, AfterSessionActivity.class); 
    /*intent.putExtra("FILE_NAME", filename);*/ 
    startActivity(intent); 

Вот вторая деятельность, которая, как предполагается, будут запущены но не запускается:

package com.fluffyclouds.satroots; 

import android.content.Context; 
import android.content.Intent; 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.widget.LinearLayoutManager; 
import android.support.v7.widget.RecyclerView; 
import android.widget.TextView; 
import android.widget.Toast; 

import java.io.BufferedReader; 
import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileNotFoundException; 
import java.io.FileOutputStream; 
import java.io.FileReader; 
import java.io.InputStreamReader; 
import java.util.ArrayList; 
import java.util.Collections; 

public class AfterSessionActivity extends AppCompatActivity { 

    private RecyclerView mRecyclerView; 
    private RecyclerView.Adapter mAdapter; 
    private RecyclerView.LayoutManager mLayoutManager; 

    int numberOfQuestions; //number of questions answered is the same as the number of questions that get asked. 
          //it gets set in the onCreate and an int is pulled from the integers xml file 

    ArrayList <String> numberDateSet = new ArrayList <String>(); 
    ArrayList <String> numberCorrectSet = new ArrayList <String>(); 
    ArrayList <String> numberIncorrectSet = new ArrayList <String>(); 
    ArrayList <String> numberAccuracySet = new ArrayList <String>(); 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     //sliding in animation 
     overridePendingTransition(R.anim.slide_in, R.anim.slide_out); 

     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_after_session); 

     numberOfQuestions = getResources().getInteger(R.integer.numberOfQuestions); 

     /*Bundle extras= getIntent().getExtras(); 
      if(extras!=null){ 
       filename=extras.getString("FILE_NAME"); 
      }*/ 

     numberDateSet.add("5/12/2015"); 
     numberCorrectSet.add("3"); 

     /*File progressReport=new File(getFilesDir()+"/"+"progress_file.txt"); 
      try { 
       BufferedReader br=new BufferedReader(new FileReader(progressReport)); 

       String line; 
       int i=0; 
       while ((line=br.readLine())!=null) {//this will populate the date and numberCorrect ArrayLists instantiated earlier 
        if (i % 2 == 0) { 
         numberDateSet.add(line); 
         System.out.println("added line to numberDateSet"); 
        } else { 
         numberCorrectSet.add(line); 
         System.out.println("added line to numberCorrectSet"); 
        } 
        i++; 
       } 
       br.close(); 
      } catch (Exception e) { 
       Toast.makeText(getApplicationContext(), "Unable to retrieve previous data", Toast.LENGTH_SHORT); 
      }*/ 

     //necessary to reverse the arraylists so they can be listed on cardviews in the appropriate order (most recent at the top) 
     Collections.reverse(numberDateSet); 
     Collections.reverse(numberCorrectSet); 

     for (int i = 0; i < numberCorrectSet.size(); i++) { 
      numberIncorrectSet.set(i, (numberOfQuestions - Integer.parseInt(numberCorrectSet.get(i))) + ""); 
      int accuracy = numberOfQuestions/(Integer.parseInt(numberCorrectSet.get(i))); 
      numberAccuracySet.set(i, (accuracy * 100) + ""); 
     } 

     mRecyclerView = (RecyclerView) findViewById(R.id.my_recycler_view); 

     mRecyclerView.setHasFixedSize(true); 

     mLayoutManager = new LinearLayoutManager(this); 
     mRecyclerView.setLayoutManager(mLayoutManager); 

     mAdapter = new MyAdapter(numberDateSet, numberCorrectSet, numberIncorrectSet, numberAccuracySet); 
     mRecyclerView.setAdapter(mAdapter); 
    } 

    @Override 
    public void onBackPressed() { 
     Intent intent = new Intent(AfterSessionActivity.this, StartActivity.class); 
     startActivity(intent); 
    } 

} 

Вот XML второй деятельности:

<?xml version="1.0" encoding="utf-8"?> 
<GridLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    android:layout_width="wrap_content" 
    android:layout_height="match_parent" 
    android:layout_gravity="center|top" 
    android:columnCount="1" 
    > 

    <android.support.v7.widget.RecyclerView 
     android:id="@+id/my_recycler_view" 
     android:scrollbars="vertical" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"/> 

</GridLayout> 

Заранее спасибо

Answer 1

Caused by: java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0 
. 
. 
. 
at com.fluffyclouds.satroots.AfterSessionActivity.onCreate(AfterSessionActivity.java:81) 

Я полагаю, что эта линия:

numberIncorrectSet.set(i, (numberOfQuestions - Integer.parseInt(numberCorrectSet.get(i))) + ""); 

Этот код не получится, потому что numberIncorrectSet является пустой список в этой точке кода.