小编kbu*_*kbu的帖子

可以有人解释我,为什么我在尝试setAdapter时有java.lang.NullPointerException？

当我尝试设置适配器时,我的arraylist已经填满了.我做错了什么？

谢谢!

activity_view_list.xml

<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical">
    <ListView
            android:id="@+id/lvView"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1">
    </ListView>
</LinearLayout>

item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
    <ImageView
            android:id="@+id/ivImage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_launcher">
    </ImageView>
    <LinearLayout
            android:id="@+id/linearLayout1"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_marginLeft="5dp"
            android:layout_weight="1"
            android:orientation="vertical">
        <TextView
                android:id="@+id/tvDescr"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="5dp"
                android:text=""
                android:textSize="20sp">
        </TextView>
    </LinearLayout>

</LinearLayout>

我的产品类

package com.shvedchenko.skleroshop;

/**
 * Created by dima on 14.08.13.
 */

public class Product {

    String name;
    int image;


    Product(String _describe, int _image) {
        name = _describe;
        image = _image;
    }

} …