Question

这是我的活动课，由一本书（Apress，“Pro Android 5”）复制，旁边是一本书中充满拼写错误的书......

package com.example.list1;

import java.util.ArrayList;
import java.util.Arrays;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends Activity {

    private ListView listView1;
    private ArrayAdapter<String> listAdapter1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);



        // Create an object of type ArrayList from an array of strings
        String[] someColors = new String[] { "Red", "Orange", "Yellow", "Green", "Blue", "Indigo", "Violet", "Black", "White"};
        ArrayList<String> colorArrayList = new ArrayList<String>();
        colorArrayList.addAll( Arrays.asList(someColors) );

        // Use values from colorArraylist as values for each text1 'sbuView' used by the listView
        listAdapter1 = new ArrayAdapter<String>(this, android.R.id.text1, colorArrayList);


        // Tell to the listView to take data and layout from our adapter
        listView1 = (ListView) findViewById(R.id.listView1);        
        listView1.setAdapter( listAdapter1 );

    }
}

这是我的布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.list1.MainActivity" >

    <ListView
        android:id="@+id/listView1"
        android:layout_width="fill_parent"
        android:layout_height="match_parent" >

    </ListView>   

</RelativeLayout>

当我保存时，Eclipse没有问题。当我运行应用程序崩溃时，从logcat我可以看到一个我无法理解/调试的异常

08-04 13:43:34.382: E/AndroidRuntime(888):  
android.content.res.Resources$NotFoundException: File  from xml type layout resource ID #0x1020014

我做错了什么？

Answer 1

实际上，您使用视图ID而不是布局ID初始化arrayAdapter。这就是您收到此错误的原因。请使用此

 ArrayAdapter<String> adp=new ArrayAdapter<String> (this,android.R.layout.simple_list_item_1,someColors);

使用数组适配器和listView时出现异常

1 个答案: