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在我的android應用程序中，我有一個fragment-fragment1。該片段裏面，我有一個靜態函數「function1'.I試圖定義使用靜態函數內的按鈕移到，findViewById不工作在片段內的靜態函數
button=(Buton)getActivity().findViewById(R.id.button1);
但是Eclipse拋出類似「錯誤，因此無法使靜態參考非靜態方法getActivity（）來自類型Fragment「。我做錯了什麼？我需要這個函數1是靜態的，以便我可以從另一個類中調用它。我的意思是，當我選擇一個特定的片段時，我必須從主活動中填充列表視圖。
片段1 =>
public class Fragment1 extends Fragment{
public static String feedurl="http://www.abcd.com/en/rssfeeds/1_2_3_5/latest/rss.xml";
static String URL = "";
static final String KEY_HEAD = "item"; // parent node
static final String KEY_DATE = "pubDate";
public static String headflag="";
int f=0;
static Button button;
HeadlinesAdapter adapter;
private TextView mMessageView;
private Button mClearButton;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.first_fragment, container, false);
return v;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
function1();
populate_listview();
}
public static void function1()
{
URL="http://www.abcd.com/en/rssfeeds/1_2_3_5/latest/rss.xml";
ArrayList<HashMap<String, String>> newsList = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL);
Document doc = parser.getDomElement(xml);
NodeList nl = doc.getElementsByTagName(KEY_HEAD);
NodeList itemLst = doc.getElementsByTagName("item");
String MarqueeStr="";
for (int i = 0; i < nl.getLength(); i++) {
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
newsList.add(map);
}
button=(Buton)getActivity().findViewById(R.id.button1);;// Here it shows error.
adapter=new Adapter1(getActivity(), newsList);
list.setAdapter(adapter);
}
}
而且我mainactivity是，
ViewpagerActivity =>
public class ViewPagerActivity extends FragmentActivity {
private ViewPager mViewPager;
private MessageLoader mLoader;
private Button mSenderButton, mReceiverButton;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// We get UI references
mViewPager = (ViewPager) findViewById(R.id.viewPager);
mSenderButton = (Button) findViewById(R.id.sender_button);
mReceiverButton = (Button) findViewById(R.id.receiver_button);
// We set pager adapter
mViewPager.setAdapter(new MyAdapter(this));
// We set receiver button listener
mViewPager.setOnPageChangeListener(new OnPageChangeListener() {
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels)
{
}
int i=0;
public void onPageSelected(int position) {
if(position==0){
}else if(position==1 && i==0){
Fragment1.function1(); // Here Iam calling function1
i++;
}
}
public void onPageScrollStateChanged(int state) {
}
});
mReceiverButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
mViewPager.setCurrentItem(0);
}
});
// We set sender button listener
mSenderButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
mViewPager.setCurrentItem(1);
}
});
}
/**
* Adapter for ViewPAger that manages background interactions with fragments
*/
private class MyAdapter extends FragmentPagerAdapter{
private Context mContext;
private String[] frags = {Headlines.class.getName(), Kerala.class.getName()};
public MyAdapter(FragmentActivity activity) {
super(activity.getSupportFragmentManager());
mContext = activity;
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
Fragment frag = (Fragment) super.instantiateItem(container, position);
if(frag instanceof MessageLoader){
mLoader = (MessageLoader) frag;
}
return frag;
}
@Override
public Fragment getItem(int pos) {
return Fragment.instantiate(mContext, frags[pos]);
}
@Override
public int getCount() {
return frags.length;
}
}
}
'功能1（）'似乎不是一成不變的！ –
我改變了它.. –