BaseAdapter中的Android getView()未调用(但调用了getCount())
我正在实现一个BaseAdapter,但是它的getView()方法没有被调用。以下是我的简单适配器:BaseAdapter中的Android getView()未调用(但调用了getCount()),android,Android,我正在实现一个BaseAdapter,但是它的getView()方法没有被调用。以下是我的简单适配器: public class Adapter extends BaseAdapter { Context context; public Adapter(Context context) { this.context = context; } @Override public int getCount() { Log.d(
public class Adapter extends BaseAdapter {
Context context;
public Adapter(Context context) {
this.context = context;
}
@Override
public int getCount() {
Log.d("log", "getcount");
return 2;
}
@Override
public Object getItem(int i) { return i; }
@Override
public long getItemId(int i) { return i; }
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
Log.d("log", "getview");
if (view == null) {
view = LayoutInflater.from(context).inflate(R.layout.item_menu, null);
}
TextView textView = (TextView) view.findViewById(R.id.tv);
textView.setText("test");
return view;
}
}
public class MenuFragment extends Fragment {
ListView mListView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_menu, container, false);
mListView = (ListView) view.findViewById(R.id.lv);
mListView.setAdapter(new Adapter(this.getActivity()));
return inflater.inflate(R.layout.fragment_menu, container, false);
}
}
下面是我如何设置适配器的:
public class Adapter extends BaseAdapter {
Context context;
public Adapter(Context context) {
this.context = context;
}
@Override
public int getCount() {
Log.d("log", "getcount");
return 2;
}
@Override
public Object getItem(int i) { return i; }
@Override
public long getItemId(int i) { return i; }
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
Log.d("log", "getview");
if (view == null) {
view = LayoutInflater.from(context).inflate(R.layout.item_menu, null);
}
TextView textView = (TextView) view.findViewById(R.id.tv);
textView.setText("test");
return view;
}
}
public class MenuFragment extends Fragment {
ListView mListView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_menu, container, false);
mListView = (ListView) view.findViewById(R.id.lv);
mListView.setAdapter(new Adapter(this.getActivity()));
return inflater.inflate(R.layout.fragment_menu, container, false);
}
}
在日志中,我可以看到
getcount
,但不能看到getview
,这意味着它从未被调用过。我可以在屏幕上看到ListView(它的背景色是红色的,所以它肯定没有隐藏)。我做错了什么 请返回视图,而不是再次膨胀布局
替换
return inflater.inflate(R.layout.fragment_menu, container, false);
借
请返回视图,而不是再次膨胀布局 替换
return inflater.inflate(R.layout.fragment_menu, container, false);
借
!!!!! 我需要一些睡眠。非常感谢。我已经调试了10个小时了…fml@0xSina它解决了你的问题吗?@SyedWaqas这不会加快列表视图的滚动速度。建议OP使用ViewHolder模式。。。!!!!!我需要一些睡眠。非常感谢。我已经调试了10个小时了…fml@0xSina它解决了你的问题吗?@SyedWaqas这不会加快列表视图的滚动速度。建议OP使用ViewHolder模式。。。