OnItemClick监听器和点击查看项目的知名度 [英] OnItemClick Listener and the visibility of the clicked View item
本文介绍了OnItemClick监听器和点击查看项目的知名度的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有每个项目包含一个一个ListView 的TextView 和的ImageView 其中的ImageView 是无形键，通过点击每个ListView项将是可见我的code是：
@覆盖
公共无效onItemClick（适配器视图＆LT;＆GT;母公司，观景，INT位置，长的id）{
ImageView的acceptImageView =（ImageView的）view.findViewById（R.id.iAccept）;
如果（acceptImageView.getVisibility（）== ImageView.INVISIBLE）{
acceptImageView.setVisibility（ImageView.VISIBLE）;
}其他{
acceptImageView.setVisibility（ImageView.INVISIBLE）;
}
}
列表查看适配器：
公共类ContentViewrAdaptor扩展BaseAdapter实现过滤的{私人列表＆LT;串GT; originalData = NULL;
私人列表＆LT;串GT; filteredData = NULL;
私人LayoutInflater mInflater;
私人定期字样;
私人ItemFilter MFILTER =新ItemFilter（）;
公共ContentViewrAdaptor（上下文的背景下，列表与LT;弦乐＆GT;的数据，定期字样）{
this.filteredData =数据;
this.originalData =数据;
this.regular =普通;
mInflater = LayoutInflater.from（上下文）;
}
公众诠释的getCount（）{
返回filteredData.size（）;
}
公共对象的getItem（INT位置）{
返回filteredData.get（位置）;
}
众长getItemId（INT位置）{
返回的位置;
}
公共查看getView（INT位置，查看convertView，父母的ViewGroup）{ ViewHolder持有人;
如果（convertView == NULL）{
convertView = mInflater.inflate（R.layout.text_view，NULL）;
持有人=新ViewHolder（）;
holder.text =（TextView中）convertView.findViewById（R.id.contentText）;
holder.text.setTypeface（常规）; convertView.setTag（保持器）;
}其他{
支架=（ViewHolder）convertView.getTag（）;
} 如果（filteredData.get（位置）。载有（字体））
holder.text.setText（Html.fromHtml（filteredData.get（位置）））;
其他
holder.text.setText（filteredData.get（位置））;
返回convertView;
}
静态类ViewHolder { TextView的文本;
}
公共过滤用getFilter（）{
返回MFILTER;
}
私有类ItemFilter扩展过滤器{ @覆盖
保护FilterResults performFiltering（CharSequence的约束）{ 字符串filterString = constraint.toString（）与toLowerCase（）。 FilterResults结果=新FilterResults（）; 最终名单＆LT;串GT;名单= originalData; 诠释计数=则为list.size（）;
最终的ArrayList＆LT;串GT; NLIST =新的ArrayList＆LT;串GT;（计数）; 串filterableString; 的for（int i = 0; I＆LT;计数;我++）{
filterableString = list.get（ⅰ）;
如果（filterableString.toLowerCase（）。包括（filterString））{
filterableString = filterableString.replaceAll（filterString，＆LT;字体颜色='红'＆gt;中+ filterString +＆LT; / FONT＆gt;中）;
nlist.add（filterableString）;
}
} results.values = NLIST;
results.count = nlist.size（）; 返回结果;
}
@燮pressWarnings（未登记）
@覆盖
保护无效publishResults（CharSequence的约束，FilterResults结果）{
filteredData =（ArrayList的＆LT;串GT;）results.values;
notifyDataSetChanged（）;
}}
}
但问题是，当我接受的第一项，第三项也将被acceped，因为它是当向下滚动第一项
我怎样才能解决这个问题？
更新（getView）
但仍是同样的问题。
公共查看getView（最终诠释的立场，观点convertView，父母的ViewGroup）{ ViewHolder持有人; 如果（convertView == NULL）{
convertView = mInflater.inflate（R.layout.text_view，NULL）;
持有人=新ViewHolder（）;
holder.image =（ImageView的）convertView.findViewById（R.id.iAccept）;
convertView.setOnClickListener（新View.OnClickListener（）{ @覆盖
公共无效的onClick（视图v）{
Toast.makeText（上下文，位置，Toast.LENGTH_SHORT）.show（）;
如果（v.findViewById（R.id.iAccept）.getVisibility（）== ImageView.VISIBLE）
v.findViewById（R.id.iAccept）.setVisibility（ImageView.INVISIBLE）;
其他
v.findViewById（R.id.iAccept）.setVisibility（ImageView.VISIBLE）;
}
}）;
holder.text =（TextView中）convertView.findViewById（R.id.contentText）;
holder.text.setTypeface（常规）; convertView.setTag（保持器）;
}其他{
支架=（ViewHolder）convertView.getTag（）;
} 如果（filteredData.get（位置）。载有（字体））
holder.text.setText（Html.fromHtml（filteredData.get（位置）））;
其他
holder.text.setText（filteredData.get（位置））;
返回convertView;
}
最后更新
终于将其与DIVA帮助解决，
我改变适配器这样的：
公共类ContentViewrAdaptor扩展BaseAdapter实现过滤的{私人列表＆LT;串GT; originalData = NULL;
私人列表＆LT;串GT; filteredData = NULL;
私人的ArrayList＆LT;整数GT; visiblePositions;
私人LayoutInflater mInflater;
私人定期字样;
私人上下文的背景下;
私人ItemFilter MFILTER =新ItemFilter（）;
公共ContentViewrAdaptor（上下文的背景下，列表与LT;弦乐＆GT;的数据，定期字样）{
this.filteredData =数据;
this.originalData =数据;
visiblePositions =新的ArrayList＆LT;整数GT;（）;
this.regular =普通;
this.context =背景;
mInflater = LayoutInflater.from（上下文）;
}
公众诠释的getCount（）{
返回filteredData.size（）;
}
公共对象的getItem（INT位置）{
返回filteredData.get（位置）;
}
众长getItemId（INT位置）{
返回的位置;
}公共查看getView（最终诠释的立场，观点convertView，父母的ViewGroup）{ 最后ViewHolder持有人; 如果（convertView == NULL）{
convertView = mInflater.inflate（R.layout.text_view，NULL）; 持有人=新ViewHolder（）;
holder.image =（ImageView的）convertView.findViewById（R.id.iAccept）;
holder.image.setTag（位置）;
holder.text =（TextView中）convertView.findViewById（R.id.contentText）;
holder.text.setTypeface（常规）; convertView.setTag（保持器）;
}其他持有人=（ViewHolder）convertView.getTag（）;
adjustImageVisibility（holder.image，visiblePositions.contains（位置））; convertView.setOnClickListener（新View.OnClickListener（）{
公共无效的onClick（视图v）{
onViewClicked（保持，位）;
}
}）; 如果（filteredData.get（位置）。载（字体））holder.text.setText（Html.fromHtml（filteredData.get（位置）））;
其他holder.text.setText（filteredData.get（位置））; 返回convertView;
}公共无效onViewClicked（ViewHolder viewHolder，整数位置）{
如果（visiblePositions.contains（位置））{
adjustImageVisibility（viewHolder.image，FALSE）;
visiblePositions.remove（位置）;
}其他{
adjustImageVisibility（viewHolder.image，真）;
visiblePositions.add（位置）;
}
}公共无效adjustImageVisibility（ImageView的ImageView的，布尔可见）{
如果（可见）imageView.setVisibility（View.VISIBLE）;
其他imageView.setVisibility（View.INVISIBLE）;
}
静态类ViewHolder {
ImageView的形象;
TextView的文本;
}
公共过滤用getFilter（）{
返回MFILTER;
}
私有类ItemFilter扩展过滤器{ @覆盖
保护FilterResults performFiltering（CharSequence的约束）{ 字符串filterString = constraint.toString（）与toLowerCase（）。 FilterResults结果=新FilterResults（）; 最终名单＆LT;串GT;名单= originalData; 诠释计数=则为list.size（）;
最终的ArrayList＆LT;串GT; NLIST =新的ArrayList＆LT;串GT;（计数）; 串filterableString; 的for（int i = 0; I＆LT;计数;我++）{
filterableString = list.get（ⅰ）;
如果（filterableString.toLowerCase（）。包括（filterString））{
filterableString = filterableString.replaceAll（filterString，＆LT;字体颜色='红'＆gt;中+ filterString +＆LT; / FONT＆gt;中）;
nlist.add（filterableString）;
}
} results.values = NLIST;
results.count = nlist.size（）; 返回结果;
}
@燮pressWarnings（未登记）
@覆盖
保护无效publishResults（CharSequence的约束，FilterResults结果）{
filteredData =（ArrayList的＆LT;串GT;）results.values;
notifyDataSetChanged（）;
}}
}
解决方案
有u需要确保一些事情：
- PLZ使用ArrayList，而不是静态的String []
- 使用View.Visible或不可见的，而不是Imagview.Visible和
这里看不见的，而比较可视性为code，它的工作原理：
适配器
公共类ListAdapter扩展BaseAdapter实现过滤的{ 私人的ArrayList＆LT;串GT; originalData = NULL;
私人的ArrayList＆LT;串GT; filteredData = NULL;
私人LayoutInflater mInflater;
私人上下文的背景下; 私人ItemFilter MFILTER =新ItemFilter（）; 公共ListAdapter（上下文的背景下，ArrayList的＆LT;串GT;数据）{
this.filteredData =新的ArrayList＆LT;＆GT;（数据）;
this.originalData =新的ArrayList＆LT;＆GT;（数据）;
this.context =背景;
mInflater = LayoutInflater.from（上下文）;
} 公众诠释的getCount（）{
返回filteredData.size（）;
} 公共对象的getItem（INT位置）{
返回filteredData.get（位置）;
} 众长getItemId（INT位置）{
返回的位置;
} 公共查看getView（最终诠释的立场，观点convertView，父母的ViewGroup）{ ViewHolder持有人=新ViewHolder（）; 如果（convertView == NULL）{
convertView = mInflater.inflate（R.layout.list_item，NULL）; 持有人=新ViewHolder（）;
holder.image =（ImageView的）convertView.findViewById（R.id.image）;
// holder.image.setVisibility（View.INVISIBLE）; holder.text =（TextView中）convertView.findViewById（R.id.text）; convertView.setTag（保持器）;
}其他{
支架=（ViewHolder）convertView.getTag（）;
}
// holder.image.setTag（位置）;
convertView.setOnClickListener（新View.OnClickListener（）{ @覆盖
公共无效的onClick（视图v）{ 如果（v.findViewById（R.id.image）.getVisibility（）== View.VISIBLE）{
v.findViewById（R.id.image）.setVisibility（View.INVISIBLE）;
}其他{
v.findViewById（R.id.image）.setVisibility（View.VISIBLE）;
} }
}）;
如果（filteredData.get（位置）。载有（字体））
holder.text.setText（Html.fromHtml（filteredData.get（位置）））;
其他
holder.text.setText（filteredData.get（位置））;
返回convertView;
} 静态类ViewHolder {
ImageView的形象;
TextView的文本;
} @覆盖
公共过滤用getFilter（）{ 返回MFILTER;
} 私有类ItemFilter扩展过滤器{ @覆盖
保护FilterResults performFiltering（CharSequence的约束）{ 字符串filterString = constraint.toString（）与toLowerCase（）。 FilterResults结果=新FilterResults（）; 最终的ArrayList＆LT;串GT;名单= originalData; 诠释计数=则为list.size（）;
最终的ArrayList＆LT;串GT; NLIST =新的ArrayList＆LT;串GT;（计数）; 串filterableString; 的for（int i = 0; I＆LT;计数;我++）{
filterableString = list.get（ⅰ）;
如果（filterableString.toLowerCase（）。包括（filterString））{
filterableString = filterableString.replaceAll（
filterString，＆LT;字体颜色='红'＆gt;中+ filterString
+＆下; /字体＆gt;中）;
nlist.add（filterableString）;
}
} results.values = NLIST;
results.count = nlist.size（）; 返回结果;
} @燮pressWarnings（未登记）
@覆盖
保护无效publishResults（CharSequence的约束，
FilterResults结果）{
filteredData =（ArrayList的＆LT;串GT;）results.values;
notifyDataSetChanged（）;
} }
}
活动
公共类MyActivity延伸活动{ 私人的ListView ListView的;
私人ListAdapter适配器; @覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.main）;
ListView控件=（ListView控件）findViewById（R.id.listView）; ArrayList的＆LT;串GT; LIST_ITEM =新的ArrayList＆LT;串GT;（）;
LIST_ITEM.add（项目1）;
LIST_ITEM.add（项目2）;
LIST_ITEM.add（项目3）;
LIST_ITEM.add（项目4）;
LIST_ITEM.add（项目5）;
LIST_ITEM.add（项目6）;
LIST_ITEM.add（项目7）;
LIST_ITEM.add（项目8）;
LIST_ITEM.add（第9项）;
LIST_ITEM.add（项目10）; listView.setChoiceMode（ListView.CHOICE_MODE_MULTIPLE）;
适配器=新ListAdapter（MyActivity.this，LIST_ITEM）;
listView.setAdapter（适配器）; }
}
编辑
替代code。
I have a ListView that each item contains one Textview and ImageView which the imageView is invisible and by clicking the each listview item it will be visible my code is :
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
ImageView acceptImageView= (ImageView) view.findViewById(R.id.iAccept);
if (acceptImageView.getVisibility()==ImageView.INVISIBLE) {
acceptImageView.setVisibility(ImageView.VISIBLE);
} else {
acceptImageView.setVisibility(ImageView.INVISIBLE);
}
}
List View adapter :
public class ContentViewrAdaptor extends BaseAdapter implements Filterable {
private List<String> originalData = null;
private List<String> filteredData = null;
private LayoutInflater mInflater;
private Typeface regular;
private ItemFilter mFilter = new ItemFilter();
public ContentViewrAdaptor(Context context, List<String> data, Typeface regular) {
this.filteredData = data;
this.originalData = data;
this.regular = regular;
mInflater = LayoutInflater.from(context);
}
public int getCount() {
return filteredData.size();
}
public Object getItem(int position) {
return filteredData.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.text_view, null);
holder = new ViewHolder();
holder.text = (TextView) convertView.findViewById(R.id.contentText);
holder.text.setTypeface(regular);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
if (filteredData.get(position).contains("font"))
holder.text.setText(Html.fromHtml(filteredData.get(position)));
else
holder.text.setText(filteredData.get(position));
return convertView;
}
static class ViewHolder {
TextView text;
}
public Filter getFilter() {
return mFilter;
}
private class ItemFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String filterString = constraint.toString().toLowerCase();
FilterResults results = new FilterResults();
final List<String> list = originalData;
int count = list.size();
final ArrayList<String> nlist = new ArrayList<String>(count);
String filterableString;
for (int i = 0; i < count; i++) {
filterableString = list.get(i);
if (filterableString.toLowerCase().contains(filterString)) {
filterableString = filterableString.replaceAll(filterString, "<font color='red'>" + filterString + "</font>");
nlist.add(filterableString);
}
}
results.values = nlist;
results.count = nlist.size();
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
filteredData = (ArrayList<String>) results.values;
notifyDataSetChanged();
}
}
}
but the problem is that when i accept the first item , the third item will be acceped too , because it's the first item when scroll down
how can i solve this problem ?
Update(getView)
but still the same problem
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.text_view, null);
holder = new ViewHolder();
holder.image = (ImageView) convertView.findViewById(R.id.iAccept);
convertView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(context,position,Toast.LENGTH_SHORT).show();
if (v.findViewById(R.id.iAccept).getVisibility() == ImageView.VISIBLE)
v.findViewById(R.id.iAccept).setVisibility(ImageView.INVISIBLE);
else
v.findViewById(R.id.iAccept).setVisibility(ImageView.VISIBLE);
}
});
holder.text = (TextView) convertView.findViewById(R.id.contentText);
holder.text.setTypeface(regular);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
if (filteredData.get(position).contains("font"))
holder.text.setText(Html.fromHtml(filteredData.get(position)));
else
holder.text.setText(filteredData.get(position));
return convertView;
}
Final Update
finally it solved with DIVA help ,
i changed Adapter to this :
public class ContentViewrAdaptor extends BaseAdapter implements Filterable {
private List<String> originalData = null;
private List<String> filteredData = null;
private ArrayList<Integer> visiblePositions;
private LayoutInflater mInflater;
private Typeface regular;
private Context context;
private ItemFilter mFilter = new ItemFilter();
public ContentViewrAdaptor(Context context, List<String> data, Typeface regular) {
this.filteredData = data;
this.originalData = data;
visiblePositions = new ArrayList<Integer>();
this.regular = regular;
this.context = context;
mInflater = LayoutInflater.from(context);
}
public int getCount() {
return filteredData.size();
}
public Object getItem(int position) {
return filteredData.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.text_view, null);
holder = new ViewHolder();
holder.image = (ImageView) convertView.findViewById(R.id.iAccept);
holder.image.setTag(position);
holder.text = (TextView) convertView.findViewById(R.id.contentText);
holder.text.setTypeface(regular);
convertView.setTag(holder);
} else holder = (ViewHolder) convertView.getTag();
adjustImageVisibility(holder.image, visiblePositions.contains(position));
convertView.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
onViewClicked(holder, position);
}
});
if (filteredData.get(position).contains("font")) holder.text.setText(Html.fromHtml(filteredData.get(position)));
else holder.text.setText(filteredData.get(position));
return convertView;
}
public void onViewClicked(ViewHolder viewHolder, Integer position) {
if (visiblePositions.contains(position)) {
adjustImageVisibility(viewHolder.image, false);
visiblePositions.remove(position);
} else {
adjustImageVisibility(viewHolder.image, true);
visiblePositions.add(position);
}
}
public void adjustImageVisibility(ImageView imageView, boolean visible) {
if (visible) imageView.setVisibility(View.VISIBLE);
else imageView.setVisibility(View.INVISIBLE);
}
static class ViewHolder {
ImageView image;
TextView text;
}
public Filter getFilter() {
return mFilter;
}
private class ItemFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String filterString = constraint.toString().toLowerCase();
FilterResults results = new FilterResults();
final List<String> list = originalData;
int count = list.size();
final ArrayList<String> nlist = new ArrayList<String>(count);
String filterableString;
for (int i = 0; i < count; i++) {
filterableString = list.get(i);
if (filterableString.toLowerCase().contains(filterString)) {
filterableString = filterableString.replaceAll(filterString, "<font color='red'>" + filterString + "</font>");
nlist.add(filterableString);
}
}
results.values = nlist;
results.count = nlist.size();
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
filteredData = (ArrayList<String>) results.values;
notifyDataSetChanged();
}
}
}
解决方案
There are few thing u need to make sure :
- plz use arraylist instead of static string[]
- use View.Visible or invisible instead of Imagview.Visible and invisible while comparing visiblity here is code that works :
Adapter
public class ListAdapter extends BaseAdapter implements Filterable {
private ArrayList<String> originalData = null;
private ArrayList<String> filteredData = null;
private LayoutInflater mInflater;
private Context context;
private ItemFilter mFilter = new ItemFilter();
public ListAdapter(Context context, ArrayList<String> data) {
this.filteredData = new ArrayList<>(data);
this.originalData = new ArrayList<>(data);
this.context = context;
mInflater = LayoutInflater.from(context);
}
public int getCount() {
return filteredData.size();
}
public Object getItem(int position) {
return filteredData.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder = new ViewHolder();
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item, null);
holder = new ViewHolder();
holder.image = (ImageView) convertView.findViewById(R.id.image);
// holder.image.setVisibility(View.INVISIBLE);
holder.text = (TextView) convertView.findViewById(R.id.text);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
// holder.image.setTag(position);
convertView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (v.findViewById(R.id.image).getVisibility() == View.VISIBLE) {
v.findViewById(R.id.image).setVisibility(View.INVISIBLE);
} else {
v.findViewById(R.id.image).setVisibility(View.VISIBLE);
}
}
});
if (filteredData.get(position).contains("font"))
holder.text.setText(Html.fromHtml(filteredData.get(position)));
else
holder.text.setText(filteredData.get(position));
return convertView;
}
static class ViewHolder {
ImageView image;
TextView text;
}
@Override
public Filter getFilter() {
return mFilter;
}
private class ItemFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String filterString = constraint.toString().toLowerCase();
FilterResults results = new FilterResults();
final ArrayList<String> list = originalData;
int count = list.size();
final ArrayList<String> nlist = new ArrayList<String>(count);
String filterableString;
for (int i = 0; i < count; i++) {
filterableString = list.get(i);
if (filterableString.toLowerCase().contains(filterString)) {
filterableString = filterableString.replaceAll(
filterString, "<font color='red'>" + filterString
+ "</font>");
nlist.add(filterableString);
}
}
results.values = nlist;
results.count = nlist.size();
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
filteredData = (ArrayList<String>) results.values;
notifyDataSetChanged();
}
}
}
Activity
public class MyActivity extends Activity {
private ListView listView;
private ListAdapter adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
listView = (ListView) findViewById(R.id.listView);
ArrayList<String> LIST_ITEM = new ArrayList<String>();
LIST_ITEM.add("Item 1");
LIST_ITEM.add("Item 2");
LIST_ITEM.add("Item 3");
LIST_ITEM.add("Item 4");
LIST_ITEM.add("Item 5");
LIST_ITEM.add("Item 6");
LIST_ITEM.add("Item 7");
LIST_ITEM.add("Item 8");
LIST_ITEM.add("Item 9");
LIST_ITEM.add("Item 10");
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
adapter = new ListAdapter(MyActivity.this, LIST_ITEM);
listView.setAdapter(adapter);
}
}
EDIT ALTERNATIVE CODE.
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