我创建了一个 TabbedActivity 作为我的 APP 的主屏幕,我还创建了一个片段(在 TabbedActivity 内部使用)以在单击特定选项卡时显示。在我正在使用 AutoComplteTextView 的片段之一中,问题是 AutoComplteTextView 不显示字符串数组列表中提到的任何建议,而且我在日志中也没有收到任何错误,可以直接解决这个问题 Code TabbedActivity 从哪里调用片段
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (getArguments().getInt(ARG_SECTION_NUMBER) == 1){
View viewMakeTransaction = inflater.inflate(R.layout.fragment_make_transaction, container, false);
return viewMakeTransaction;
}
else if(getArguments().getInt(ARG_SECTION_NUMBER) == 2){
View viewAddCustomer = inflater.inflate(R.layout.fragment_add_customer, container, false);
return viewAddCustomer;
}
else if (getArguments().getInt(ARG_SECTION_NUMBER) == 3){
View viewViewTransaction = inflater.inflate(R.layout.fragment_view_transaction, container, false);
return viewViewTransaction;
}
else{
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
TextView textView = (TextView) rootView.findViewById(R.id.section_label);
textView.setText(getString(R.string.section_format, getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
具有 AutocompletTextView 的片段 (fragment_make_transaction) 代码
private static final String[] COUNTRIES = new String[]{"India","America"};
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View viewMakeTransactionFragment = inflater.inflate(R.layout.fragment_make_transaction, container, false);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1,COUNTRIES);
final AutoCompleteTextView autoCompleteTextView = (AutoCompleteTextView) viewMakeTransactionFragment.findViewById(R.id.selectCustomer);
autoCompleteTextView.setAdapter(adapter);
return viewMakeTransactionFragment;
}
重现问题的步骤 1. 创建一个新的 Android 项目 - 选择 TabbedActivity 和 Navigation Style 作为 -ActionBarTabs(with page viewer) 如下图TabbedActivity
- 单击完成 - 将创建项目
- 创建一个新的空白片段
从现在开始编辑片段中的代码,如下片段代码
包 demo.com.problem;
导入android.content.Context;导入android.net.Uri;导入android.os.Bundle;导入android.support.v4.app.Fragment;导入 android.view.LayoutInflater;导入android.view.View;导入android.view.ViewGroup;
public class BlankFragment extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // 膨胀这个片段的布局 return inflater.inflate(R.layout.fragment_blank, container, false); } }
转到 TabbedActivity - 方法 (onCreateView) 内的 java 代码使用以下代码调用片段
当用户在选项卡式活动的第一个屏幕上时,这将调用片段
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (getArguments().getInt(ARG_SECTION_NUMBER) == 1){
View viewMakeTransaction = inflater.inflate(R.layout.fragment_blank, container, false);
return viewMakeTransaction;
}
else{
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
TextView textView = (TextView) rootView.findViewById(R.id.section_label);
textView.setText(getString(R.string.section_format, getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
运行应用程序一次以确保片段显示在第 1 部分下
将 AutoCompleteTextView 添加到片段的步骤
片段的 XML 文件
<!-- TODO: Update blank fragment layout --> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_blank_fragment" /> <AutoCompleteTextView android:id="@+id/textView" android:layout_width="match_parent" android:layout_height="wrap_content" />
片段的 Java 代码
包 demo.com.problem;
导入android.content.Context;导入android.net.Uri;导入android.os.Bundle;导入android.support.v4.app.Fragment;导入 android.support.v7.widget.AppCompatAutoCompleteTextView;导入 android.view.LayoutInflater;导入android.view.View;导入android.view.ViewGroup;导入 android.widget.ArrayAdapter;导入 android.widget.AutoCompleteTextView;
公共类 BlankFragment 扩展片段 { AutoCompleteTextView autoCompleteTextView; private static final String[] COUNTRIES = new String[]{"India","Aus"};
@Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_blank, container, false); ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1,COUNTRIES); autoCompleteTextView = (AutoCompleteTextView) view.findViewById(R.id.textView); autoCompleteTextView.setAdapter(adapter); // Inflate the layout for this fragment return view; }
}
自动完成文本视图的问题在此处输入图像描述