Java AutocompleteTextview中的Android Listview没有响应
我的申请有问题。当我尝试搜索我的应用程序时，当我单击建议列表时，它将响应关闭。为什么会这样？我该如何解决这个问题 我会给你看我的代码和日志 MainActivity.javaJava AutocompleteTextview中的Android Listview没有响应,java,android,listview,autocompletetextview,onitemclicklistener,Java,Android,Listview,Autocompletetextview,Onitemclicklistener,我的申请有问题。当我尝试搜索我的应用程序时，当我单击建议列表时，它将响应关闭。为什么会这样？我该如何解决这个问题 我会给你看我的代码和日志 MainActivity.java public class MainActivity extends Activity { AutoCompleteTextView autocomplete; Button clear; ListView lv; String[] animals_names; ArrayList<Main> anima
public class MainActivity extends Activity {
AutoCompleteTextView autocomplete;
Button clear;
ListView lv;
String[] animals_names;
ArrayList<Main> animalslist;
AnimalsAdapter adapter;
@SuppressWarnings("rawtypes")
Class[] classes = {
Aa.class,
Ab.class,
Ac.class,
Ad.class,
Ae.class,
Af.class,
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.b_activity_main);
lv = (ListView) findViewById(R.id.list_view);
autocomplete = (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);
clear = (Button) findViewById(R.id.clear);
clear.setVisibility(View.INVISIBLE);
animals_names = getResources().getStringArray(R.array.animals_names);
animalslist = new ArrayList<Main>();
for (int i = 0; i < animals_names.length; i++) {
Main country = new Main(i,animals_names[i], classes[i]);
animalslist.add(country);
}
adapter = new AnimalsAdapter(getApplicationContext(), animalslist);
final ArrayAdapter<String> adapter = new ArrayAdapter<String>
(this,android.R.layout.simple_list_item_1, animals_names);
autocomplete.setAdapter(this.adapter);
autocomplete.setThreshold(1);
autocomplete.setOnItemClickListener(new AdapterView.OnItemClickListener() {
AnimalsAdapter adapter1;
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Main item = (Main) adapter1.getItem(position);
Intent d = new Intent(MainActivity.this, item.getClazz());
startActivity(d);
/** Fading Transition Effect */
MainActivity.this.overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
}
});
autocomplete.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
//do nothing
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
//do nothing
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if(s.length() != 0) {
clear.setVisibility(View.VISIBLE);
} else {
clear.setVisibility(View.GONE);
}
}
});
}
public class Main {
String name;
int id;
Class<?> clazz;
Main(int id, String name, Class<?> clazz) {
this.name = name;
this.clazz = clazz;
this.id = id;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public void setClazz(Class<?> clazz) {
this.clazz = clazz;
}
public Class<?> getClazz() {
return clazz;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
public class AnimalsAdapter extends BaseAdapter implements Filterable {
Context context;
ArrayList<Main> animalslist;
ArrayList<Main> mStringFilterList;
ValueFilter valueFilter;
AnimalsAdapter(Context context, ArrayList<Main> animalslist) {
this.context = context;
this.animalslist = animalslist;
mStringFilterList = animalslist;
}
@Override
public int getCount() {
return animalslist.size();
}
@Override
public Object getItem(int position) {
return animalslist.get(position);
}
@Override
public long getItemId(int position) {
return animalslist.indexOf(getItem(position));
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater mInflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.b_animals_item, null);
TextView name_tv = (TextView) convertView.findViewById(R.id.name);
Main animal = animalslist.get(position);
name_tv.setText(animal.getName());
}
return convertView;
}
@Override
public Filter getFilter() {
if (valueFilter == null) {
valueFilter = new ValueFilter();
}
return valueFilter;
}
private class ValueFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if (constraint != null && constraint.length() > 0) {
ArrayList<Main> filterList = new ArrayList<Main>();
for (int i = 0; i < mStringFilterList.size(); i++) {
if ((mStringFilterList.get(i).getName().toUpperCase())
.contains(constraint.toString().toUpperCase())) {
Main country = new Main(mStringFilterList.get(i).getId(),mStringFilterList.get(i)
.getName(), mStringFilterList.get(i).getClazz());
filterList.add(country);
}
}
results.count = filterList.size();
results.values = filterList;
} else {
results.count = mStringFilterList.size();
results.values = mStringFilterList;
}
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
animalslist = (ArrayList<Main>) results.values;
notifyDataSetChanged();
}
}
}
Main item=（主）适配器.getItem（位置）
而不是
Main item = (Main) ((Menu) adapter).getItem(position);
编辑
02-04 02:07:17.079: E/AndroidRuntime(1035): FATAL EXCEPTION: main
02-04 02:07:17.079: E/AndroidRuntime(1035): Process: com.example.scientificnames, PID: 1035
02-04 02:07:17.079: E/AndroidRuntime(1035): java.lang.ClassCastException: android.widget.ArrayAdapter cannot be cast to android.view.Menu
02-04 02:07:17.079: E/AndroidRuntime(1035): at com.example.scientificnames.MainActivity$1.onItemClick(MainActivity.java:247)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AutoCompleteTextView.performCompletion(AutoCompleteTextView.java:902)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AutoCompleteTextView.access$500(AutoCompleteTextView.java:91)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AutoCompleteTextView$DropDownItemClickListener.onItemClick(AutoCompleteTextView.java:1192)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AdapterView.performItemClick(AdapterView.java:299)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AbsListView.performItemClick(AbsListView.java:1113)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2904)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AbsListView$3.run(AbsListView.java:3638)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.os.Handler.handleCallback(Handler.java:733)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.os.Handler.dispatchMessage(Handler.java:95)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.os.Looper.loop(Looper.java:136)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.app.ActivityThread.main(ActivityThread.java:5017)
02-04 02:07:17.079: E/AndroidRuntime(1035): at java.lang.reflect.Method.invokeNative(Native Method)
02-04 02:07:17.079: E/AndroidRuntime(1035): at java.lang.reflect.Method.invoke(Method.java:515)
02-04 02:07:17.079: E/AndroidRuntime(1035): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
02-04 02:07:17.079: E/AndroidRuntime(1035): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
02-04 02:07:17.079: E/AndroidRuntime(1035): at dalvik.system.NativeStart.main(Native Method)
您有两个适配器一个是本地（字符串类型），另一个是全局（主类型）
不是
这里还使用局部变量use global
Main item = (Main) adapter.getItem(position);
您有两个适配器，一个是本地适配器，另一个是全局适配器
Main item = (Main) adapter.getItem(position);
Main类型的全局AnimalAdapter是BaseAdapter的子级
字符串类型的本地ArrayAdapter
我可以知道为什么这两个？？？类castexception使用
Main item=（主）适配器.getItem（位置）
而不是
Main item = (Main) ((Menu) adapter).getItem(position);
编辑
02-04 02:07:17.079: E/AndroidRuntime(1035): FATAL EXCEPTION: main
02-04 02:07:17.079: E/AndroidRuntime(1035): Process: com.example.scientificnames, PID: 1035
02-04 02:07:17.079: E/AndroidRuntime(1035): java.lang.ClassCastException: android.widget.ArrayAdapter cannot be cast to android.view.Menu
02-04 02:07:17.079: E/AndroidRuntime(1035): at com.example.scientificnames.MainActivity$1.onItemClick(MainActivity.java:247)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AutoCompleteTextView.performCompletion(AutoCompleteTextView.java:902)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AutoCompleteTextView.access$500(AutoCompleteTextView.java:91)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AutoCompleteTextView$DropDownItemClickListener.onItemClick(AutoCompleteTextView.java:1192)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AdapterView.performItemClick(AdapterView.java:299)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AbsListView.performItemClick(AbsListView.java:1113)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2904)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.widget.AbsListView$3.run(AbsListView.java:3638)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.os.Handler.handleCallback(Handler.java:733)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.os.Handler.dispatchMessage(Handler.java:95)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.os.Looper.loop(Looper.java:136)
02-04 02:07:17.079: E/AndroidRuntime(1035): at android.app.ActivityThread.main(ActivityThread.java:5017)
02-04 02:07:17.079: E/AndroidRuntime(1035): at java.lang.reflect.Method.invokeNative(Native Method)
02-04 02:07:17.079: E/AndroidRuntime(1035): at java.lang.reflect.Method.invoke(Method.java:515)
02-04 02:07:17.079: E/AndroidRuntime(1035): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
02-04 02:07:17.079: E/AndroidRuntime(1035): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
02-04 02:07:17.079: E/AndroidRuntime(1035): at dalvik.system.NativeStart.main(Native Method)
您有两个适配器一个是本地（字符串类型），另一个是全局（主类型）
不是
这里还使用局部变量use global
Main item = (Main) adapter.getItem(position);
您有两个适配器，一个是本地适配器，另一个是全局适配器
Main item = (Main) adapter.getItem(position);
Main类型的全局AnimalAdapter是BaseAdapter的子级
字符串类型的本地ArrayAdapter
我可以知道为什么这两个吗？？？试试：
Main item = (Main) parent.getAdapter().getItem(position);
而不是：
Main item = (Main) ((Menu) adapter).getItem(position);
您的Arrayadapter
初始化应该是：
final ArrayAdapter<Main> adapter_new = new ArrayAdapter<Main>
(this,android.R.layout.simple_list_item_1, animalslist);
autocomplete.setAdapter(adapter_new);
final ArrayAdapter adapter\u new=new ArrayAdapter
（这是android.R.layout.simple_list_item_1，animallist）；
自动完成。设置适配器（新适配器）；
您正在使用字符串
作为参数，这是错误的请尝试：
Main item = (Main) parent.getAdapter().getItem(position);
而不是：
Main item = (Main) ((Menu) adapter).getItem(position);
您的Arrayadapter
初始化应该是：
final ArrayAdapter<Main> adapter_new = new ArrayAdapter<Main>
(this,android.R.layout.simple_list_item_1, animalslist);
autocomplete.setAdapter(adapter_new);
final ArrayAdapter adapter\u new=new ArrayAdapter
（这是android.R.layout.simple_list_item_1，animallist）；
自动完成。设置适配器（新适配器）；
您正在使用String
作为参数，这是错误的我尝试了一下，但它得到了错误（无法从字符串转换到主字符串）无法从字符串转换到主字符串Main item=（Main）adapter.getItem（position）中仍然存在错误适配器是本地的，在这里使用全局。为local和global指定不同的名称为什么两个适配器一个是local，另一个是globalI请尝试，但它出现了错误（无法从字符串转换到Main）无法从字符串转换到Main它仍然在Main item=（Main）adapter.getItem（position）中出错适配器是本地的，在这里使用全局。为本地和全局指定不同的名称为什么两个适配器一个是本地的，另一个是全局的java.lang.ClassCastException:android.widget.ArrayAdapter不能强制转换为android.view.Menu
-可能要从这个开始？可能是重复的。如何解决这个问题？你能帮我吗？你能告诉我怎么做吗？哪一行是你的（MainActivity.java:247）
行？java.lang.ClassCastException:android.widget.ArrayAdapter不能强制转换到android.view.Menu
-可能要从这个开始？可能是重复的。如何解决这个问题？你能帮我吗？你能告诉我怎么做吗？哪一行是你的（MainActivity.java:247）
行？它仍然说要检查logcat？这是logcat（）使用不同的适配器变量..name..查看我的代码..当我删除
并替换为
时，它将在名称中出错）它仍然说不幸的是关闭检查logcat？这是logcat（）使用不同的适配器变量..名称..参见我的代码..当我删除
并替换为
时，它将在名称中出错）