0
이것은 내 MainActivity입니다.사용자 지정 ListView with Image
public class MainActivity extends Activity implements OnItemClickListener {
public static final String[] titles = new String[] { "Strawberry",
"Banana", "Orange", "Mixed" };
public static final String[] descriptions = new String[] {
"It is an aggregate accessory fruit",
"It is the largest herbaceous flowering plant", "Citrus Fruit",
"Mixed Fruits" };
public static final int[] image = { R.drawable.a_1, R.drawable.a_2,
R.drawable.a_3, R.drawable.a_4 };
public ListView listView;
List<RowItem> rowItems;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rowItems = new ArrayList<RowItem>();
for (int i = 0; i < titles.length; i++) {
RowItem item = new RowItem(image[i], titles[i], descriptions[i]);
rowItems.add(item);
}
listView = (ListView) findViewById(R.id.list);
customeBaseAdapter adapter = new customeBaseAdapter(this, rowItems);
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
}
}
이 내 CustomAdapter
public class customeBaseAdapter extends BaseAdapter {
Context context;
List<RowItem> rowItems;
public customeBaseAdapter(Context context, List<RowItem> items) {
// TODO Auto-generated constructor stub
this.context = context;
this.rowItems = items;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return 4;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return rowItems.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View view, ViewGroup group) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (view == null) {
view = inflater.inflate(R.layout.list_item, null);
}
ImageView imageView = (ImageView) view.findViewById(R.id.image);
TextView titleTextView = (TextView) view.findViewById(R.id.title);
TextView desc = (TextView) view.findViewById(R.id.desc);
imageView.setImageResource(rowItems.get(position).getImageId());
titleTextView.setText(rowItems.get(position).getTitle());
desc.setText(rowItems.get(position).getDesc());
return view;
}
}
이 내 RowItem 클래스입니다
package com.example.customlistview;
import android.R.integer;
public class RowItem {
private int imageId;
private String title;
private String desc;
public RowItem(int imageId, String title, String desc) {
this.imageId = imageId;
this.title = title;
this.desc = desc;
}
public int getImageId() {
return imageId;
}
public void setImageId(int imageId) {
this.imageId = imageId;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
@Override
public String toString() {
return title + "\n" + desc;
}
}
로그 캣 오류입니다.
10-15 01:04:05.135: E/AndroidRuntime(9901): FATAL EXCEPTION: main
10-15 01:04:05.135: E/AndroidRuntime(9901): java.lang.NullPointerException
10-15 01:04:05.135: E/AndroidRuntime(9901): at com.example.customlistview.customeBaseAdapter.getView(customeBaseAdapter.java:56)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.widget.AbsListView.obtainView(AbsListView.java:2350)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.widget.ListView.measureHeightOfChildren(ListView.java:1409)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.widget.ListView.onMeasure(ListView.java:1273)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.view.View.measure(View.java:15286)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4832)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.view.View.measure(View.java:15286)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4832)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
10-15 01:04:05.135: E/AndroidRuntime(9901): at android.view.View.measure(View.java:15286)
내 맞춤 어댑터 클래스에서 나는 어떤 일이 있었는지 모릅니다. 너무 많이 시도했지만 해결 방법을 모릅니다.
강조 또는 'customBaseAdapter'에서 선 (56)이 무엇인지 언급 해주십시오. – Setu
imageView.setImageResource (rowItems.get (position) .getImageId()); 이 라인 맨. @ Setu –
내 대답 (스타일)을 사용해 보셨습니까? 정말 그 imageview, textview 아래에 imageview 줄을 밀어 한 번 더 테스트하고 nullpointer 예외가 여전히 56 줄에 있으면 다음 myt 맞을 것입니다 .. – Elltz