java - Android ListView 与数组数据库

Question

我在正确显示 ListView 时遇到问题

如果我声明

String[] cod = {"cod1","cod2", "cod3"};
String[] desc = {"desc1","desc2", "desc3"};
String[] preco = {"1.00","2.00", "3.00"}; 

我的适配器是:

lista = (ListView)findViewById(R.id.list);
lista.setAdapter(new dataListAdapter(cod, desc, preco));

完美运行!

但是如果我从数据库获取数据，ListView 只显示一行。

results = DbHelper.getItemsDao().queryRaw(sqlGetItems);

/*GET ALL RESULTS FROM DATABASE*/
List<String[]> array = results.getResults();    

int count = array.size();

String[] cod = null, desc = null, preco = new String[count];

for(int i = 0; i < count; i++) {
    String[] res = array.get(i);
    cod = new String[]{res[0]} ;
    desc = new String[]{res[1]};
    preco = new String[]{res[3]};
}

lista = (ListView) findViewById(R.id.list);
lista.setAdapter(new dataListAdapter(cod, desc, preco));

Answer 1

尝试这个解决方案:

for(int i = 0; i < count; i++) {
    String[] res = array.get(i);
    cod.add(res[0]) ;
    desc.add(res[1]);
    preco.add(res[3]);
}