java - Android自定义ArrayAdapter : "unfortunately, app has stopped" while scrolling

Question

我不明白为什么这段代码会导致“不幸的是，android3已经停止”

我尝试了很多在网上找到的解决方案，但似乎都不起作用，我不知道原因，请有人帮助我。

这是我的activity_main.xml 文件

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical">
    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/theListView">
    </ListView>
</LinearLayout>

这是我的 MainActivity.java 文件

MainActivity.java:

package  com.snoott.android3;


import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;

import java.util.ArrayList;

public  class MainActivity extends AppCompatActivity {

    ListView listView;

    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String names[] = {"Dustin Moskovitz" , "Elon Musk" , "Bill Gates" , "Mark Zuckerberg" , "Larry Page" ,
                "Sergey Brin" , "Steve Jobs" , "Tim Cook"};
        final Integer[] images = {R.drawable.dustin , R.drawable.elon , R.drawable.gate , R.drawable.mark , R.drawable.page ,
                R.drawable.sergey , R.drawable.steve , R.drawable.tim};



        final String descriptions [] = {"Co-founder of Facebook" , "CEO Tesla" , "Founder Microsoft" , "Co-founder , CEO of Facebook" ,
                "Chairman Alphabet Inc." , "President Alphabet Inc." , "Founder Apple" , "CEO Apple"};

        ArrayList<Profile> profiles = new ArrayList<Profile>();

        for(int i = 0; i < descriptions.length; ++i){
            profiles.add(new Profile(names[i] , images[i] , descriptions[i]));

        }






        ArrayAdapter<Profile> listAdapter = new CustomAdapter(this , profiles);
        listView = (ListView)findViewById(R.id.theListView);
        listView.setAdapter(listAdapter);



    }

}

这是我的 Profile.java 文件

Profile.java:

package com.snoott.android3;

public class Profile {

    public String name;
    public Integer profileImage;
    public String description;


    public  Profile(){}

    public Profile(String name , Integer profile , String description){
        this.name = name;
        this.profileImage = profile;
        this.description = description;
    }

}

这是我的 CustomAdapter 文件:

CustomAdapter.java:

package com.snoott.android3;


import android.content.Context;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;

public class CustomAdapter extends ArrayAdapter<Profile>{


    public CustomAdapter(@NonNull Context context, ArrayList<Profile> resource) {
        super(context, R.layout.custom_listview , resource);
    }


    @NonNull
    @Override
    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
        ViewHolder viewHolder;

        Profile currentProfile = (Profile)getItem(position);

        if(convertView == null){
            viewHolder = new ViewHolder();
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.custom_listview , parent , false);
            viewHolder.nameTextView = (TextView)convertView.findViewById(R.id.profileName);
            viewHolder.profileImage = (ImageView)convertView.findViewById(R.id.profile_image);
            viewHolder.descriptionTextView = (TextView)convertView.findViewById(R.id.profileDescription);
            convertView.setTag(viewHolder);
        }

        else {

            viewHolder = (ViewHolder)convertView.getTag();

        }

        viewHolder.nameTextView.setText(currentProfile.name);
        viewHolder.profileImage.setImageResource(currentProfile.profileImage);
        viewHolder.descriptionTextView.setText(currentProfile.description);

        return  convertView;

    }

    static class ViewHolder {

        TextView nameTextView;
        TextView descriptionTextView;
        ImageView profileImage;

    }
}

custom_listview.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

    >

    <de.hdodenhof.circleimageview.CircleImageView
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/profile_image"
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:src="@drawable/mark"
        app:civ_border_width="2dp"
        app:civ_border_color="#FF000000"
        android:layout_marginRight="30dp"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="20dp"
        />
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="-20dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Mark Zuckerberg"
            android:textFontWeight="bold"
            android:fontFamily="sans-serif-condensed"
            android:textStyle="bold"
            android:id="@+id/profileName"
            />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:text="CEO of Facebook"
            android:id="@+id/profileDescription"/>

    </LinearLayout>


</LinearLayout>

build.gradle:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.snoott.android3"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0-rc01'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    implementation 'de.hdodenhof:circleimageview:2.2.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

Answer 1

它必须抛出ArrayIndexOutOfBoundsException，因为数组names和images长度为8但description 数组长度为 9。只需保持所有数组项大小相等即可。