这是Adapter为了我的GridView内心DetailFragment
public class MyAdapter extends BaseAdapter {
Context mContext;
static final String TAG_SUCCESS = "success";
static final String TAG_MENU = "menu";
static final String TAG_MID = "mid";
static final String TAG_NAME = "name";
static final String TAG_PICT = "picture";
static final String TAG_PRICE = "price";
private LayoutInflater mInflater;
private static ArrayList<HashMap<String, String>> menuList;
public MyAdapter(Context c) {
mContext = c;
mInflater = LayoutInflater.from(c);
}
public void setArrayList(ArrayList<HashMap<String, String>> mlist) {
menuList = new ArrayList<HashMap<String, String>>();
menuList = mlist;
Log.d("Try To Print", menuList.get(0).get(TAG_NAME));
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return menuList.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return menuList.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
// Building Parameters
ViewHolder holder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.gviewfill, parent, false);
holder = new ViewHolder();
holder.ImgView = new ImageView(mContext);
holder.ImgView.setScaleType(ImageView.ScaleType.CENTER_CROP);
holder.ImgView = (ImageView) convertView
.findViewById(R.id.iv_menu_image);
holder.txtName = (TextView) convertView
.findViewById(R.id.tv_menu_name);
holder.price = (TextView) convertView
.findViewById(R.id.tv_menu_price);
if (position == 0) {
convertView.setTag(holder);
}
} else {
holder = (ViewHolder) convertView.getTag();
}
String uri = new String(menuList.get(position).get(TAG_PICT));
int resID = convertView.getResources().getIdentifier(uri, "drawable",
mContext.getPackageName());
System.out.println("isi res ID " + position + "= " + resID);
holder.ImgView.setImageResource(resID);
holder.price.setText("Rp. " + menuList.get(position).get(TAG_PRICE));
holder.txtName.setText(menuList.get(position).get(TAG_NAME));
return convertView;
}
static class ViewHolder {
ImageView ImgView;
TextView txtName;
TextView price;
}
请看这张截图。
当我向下滚动gridview结果时FORCECLOSE
02-25 15:12:32.544: E/AndroidRuntime(502): FATAL EXCEPTION: main
02-25 15:12:32.544: E/AndroidRuntime(502): java.lang.NullPointerException
02-25 15:12:32.544: E/AndroidRuntime(502): at com.example.android.rssfeed.MyAdapter.getView(MyAdapter.java:116)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.widget.AbsListView.obtainView(AbsListView.java:1949)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.widget.GridView.makeAndAddView(GridView.java:1323)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.widget.GridView.makeRow(GridView.java:328)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.widget.GridView.fillDown(GridView.java:281)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.widget.GridView.correctTooLow(GridView.java:649)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.widget.GridView.fillGap(GridView.java:257)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.widget.AbsListView.trackMotionScroll(AbsListView.java:4408)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.widget.AbsListView.onTouchEvent(AbsListView.java:2896)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.View.dispatchTouchEvent(View.java:4609)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1554)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1320)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1560)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1333)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1560)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1333)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1560)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1333)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1560)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1333)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1560)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1333)
02-25 15:12:32.544: E/AndroidRuntime(502): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1710)
02-25 15:12:32.544: E/AndroidRuntime(502): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1265)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.app.Activity.dispatchTouchEvent(Activity.java:2309)
02-25 15:12:32.544: E/AndroidRuntime(502): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1683)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.View.dispatchPointerEvent(View.java:4677)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewRoot.deliverPointerEvent(ViewRoot.java:2348)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.view.ViewRoot.handleMessage(ViewRoot.java:2017)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.os.Handler.dispatchMessage(Handler.java:99)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.os.Looper.loop(Looper.java:132)
02-25 15:12:32.544: E/AndroidRuntime(502): at android.app.ActivityThread.main(ActivityThread.java:4025)
02-25 15:12:32.544: E/AndroidRuntime(502): at java.lang.reflect.Method.invokeNative(Native Method)
02-25 15:12:32.544: E/AndroidRuntime(502): at java.lang.reflect.Method.invoke(Method.java:491)
02-25 15:12:32.544: E/AndroidRuntime(502): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
02-25 15:12:32.544: E/AndroidRuntime(502): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
02-25 15:12:32.544: E/AndroidRuntime(502): at dalvik.system.NativeStart.main(Native Method)
有人可以告诉我我的代码有什么问题吗？
我无法理解这个logcat
或者，
有人可以指导我如何创建gridview数据库值吗？我需要得到这个值dialog fragment..请帮帮我..