Question

您有一个带有以下代码段的自定义列表视图问题是当我运行代码时应用程序崩溃了这是我的代码

class MyAdupter extends ArrayAdapter<String>{
     Context context; 
     String[] title ; 
     String[] description; 
     int[] images; 
     public MyAdupter(Context context, String[] title, String[] description, int[] images) {
        super(context, R.layout.my_simple_row,title);
        this.context = context; 
        this.title = title; 
        this.description = description; 
    } 
    @Override 
    public View getView(int position, View convertView, ViewGroup parent) {
        Layoutlnflater inflater = (Layoutlnflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
        View row = inflater.inflate(R.layout.my_simple_row, parent, false); 
        ImageView imageView = (ImageView) row.findViewById (R.id.imageViewl); 
        TextView textTitle = (TextView) row.findViewById (R.id.textViewl); 
        TextView textDescription = (TextView) row.findViewById(R.id.textView2);   

        imageView.setImageResource(images[position]); 
        textTitle.setText(title[position]); 
        textDescription.setText(description[position]); 
        return row; 
    }
}

Answer 1

嗯，你忘了在构造函数

中为images数组赋值

this.images=image;

试试吧!!!

Answer 2

忘记分配

在构造函数中使用this.images = image;构造函数代码变为

public MyAdupter(Context context,String... title,String... description,int... images) {
super(context, R.layout.my_simple_row,title);
this.context = context;
this.title = title;
this.description = description;
this.images = images;
}

如何在此代码中删除NullPointerException

2 个答案: