这是我收到的错误。
空指针异常 11-06 19:03:34.050:WARN / System.err(5342):在RetrievingAmazonXMLDataActivity.onCreate(RetrievingAmazonXMLDataActivity.java:88)
for (int i = 0; i < tokens.length; i++) {
String a = dumpTitles("ProductName", i);
element = a.split("!");
allProducts.add(element);
}
w = (String[][])allProducts.toArray(new String[allProducts.size()][]);
Spinner spinnerProducts = (Spinner) findViewById(R.id.spinner2);
spinnerProducts.setOnItemSelectedListener(this);
// **** error line below
ArrayAdapter<String> productsArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, productArrayToShow);
productsArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnerProducts.setAdapter(productsArrayAdapter);
public void onItemSelected(AdapterView<?> parent, View v, int position, long id)
{
try {
selected = parent.getItemAtPosition(position).toString();
productArrayToShow = w[position];
} catch (Exception e) {}
}
答案 0 :(得分:0)
你并没有真正说出你的代码中有什么“productArrayToShow”,但我会假设它是你想在适配器中显示的二维字符串数组。最简单的方法就是用它制作一维阵列:
int rows = productArrayToShow.length;
int cols = productArrayToShow[0].length;
String[] productArray = new String[rows*cols];
int count = 0;
for(int r=0; r<rows; ++r)
for(int c=0; c<cols; ++c)
productArray[count++] = productArrayToShow[r][c];