处理的ImageButton自定义列表视图里面点击 [英] Handling imageButton clicks inside a custom listview
本文介绍了处理的ImageButton自定义列表视图里面点击的处理方法，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
我有一个自定义的适配器列表视图。在ListView中自定义行containts 2 imagebuttons需要处理的东西，当我点击它。
但它不能很好地工作就像我想要的，因为当我启动应用程序，并单击ImageButton的则什么也不会发生，但如果我先点击行，然后在ImageButton的，那么我的点击被处理。
我尝试了一些解决方案，帮助其他用户在这里SO，但没有人有完全相同的问题，因为我认为它被连续点击后处理。
FavoriteActivity
公共类FavoriteActivity延伸活动{ 私人列表＆LT;喜欢＆GT; favoriteItem =新的ArrayList＆LT;喜欢＆GT;（）;
ViewHolder持有人=新ViewHolder（）;
@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.favorite）; populateFavoriteList（）;
populateListview（）;
registerClickCallBack（）;
}
私人无效populateFavoriteList（）{
favoriteItem.add（新宠（R.drawable.icon_camera项目1））;
favoriteItem.add（新宠（R.drawable.icon_camera，项目2））;
favoriteItem.add（新宠（R.drawable.icon_camera项目3））;
favoriteItem.add（新宠（R.drawable.icon_camera项目4））;
favoriteItem.add（新宠（R.drawable.icon_camera项目5））;
favoriteItem.add（新宠（R.drawable.icon_camera项目6））;
favoriteItem.add（新宠（R.drawable.icon_camera，以7））;
favoriteItem.add（新宠（R.drawable.icon_camera，第8项））;
} 私人无效populateListview（）{
ArrayAdapter＆LT;喜欢＆GT;适配器=新MyListAdapter（）;
ListView控件列表=（ListView控件）findViewById（R.id.favoriteList）;
list.setAdapter（适配器）;
} 私有类MyListAdapter扩展ArrayAdapter＆LT;喜欢＆GT; {
公共MyListAdapter（）{
超（FavoriteActivity.this，R.layout.favorite_row，favoriteItem）;
} @覆盖
公共查看getView（INT位置，查看convertView，父母的ViewGroup）{
//要确保我们有一个观点，因为空是可能的
查看ItemView控件= convertView;
如果（ItemView控件== NULL）{
。ItemView控件= getLayoutInflater（）膨胀（R.layout.favorite_row，父母，假）;
} //查找与合作项目
收藏CURRENTITEM = favoriteItem.get（位置）; //灌装查看
holder.thumbnail =（的ImageButton）itemView.findViewById（R.id.favoriteThumbnail）;
holder.thumbnail.setBackgroundResource（currentItem.getThumbnail（））; holder.name =（TextView中）itemView.findViewById（R.id.favoriteName）;
holder.name.setText（currentItem.getName（））;
返回ItemView控件;
}
} 私人无效registerClickCallBack（）{ ListView控件列表=（ListView控件）findViewById（R.id.favoriteList）;
list.setOnItemClickListener（新AdapterView.OnItemClickListener（）{
@覆盖
公共无效onItemClick（适配器视图＆LT;＆GT;母公司，查看viewClicked，INT位置，长的id）{ 最终收藏favoriteClicked = favoriteItem.get（位置）;
弦乐味精=点击位置+位置+，这是+ favoriteClicked.getName（）; //我可以用我持有人这里得到的名字后面？因为它不工作...
Toast.makeText（FavoriteActivity.this，味精，Toast.LENGTH_LONG）.show（）; 的ImageButton btnDirections =（的ImageButton）viewClicked.findViewById（R.id.favoriteDirections）;
的ImageButton btnDelete =（的ImageButton）viewClicked.findViewById（R.id.favoriteDelete）; btnDirections.setOnClickListener（新OnClickListener（）{
字符串btnmsg =获取路线为+ favoriteClicked.getName（）;
@覆盖
公共无效的onClick（视图v）{
Toast.makeText（FavoriteActivity.this，btnmsg，Toast.LENGTH_LONG）.show（）;
}
}）; btnDelete.setOnClickListener（新OnClickListener（）{
字符串btnmsg =越来越删除+ favoriteClicked.getName（）;
@覆盖
公共无效的onClick（视图v）{
Toast.makeText（FavoriteActivity.this，btnmsg，Toast.LENGTH_LONG）.show（）;
}
}）;
}
}）;
} 静态类ViewHolder {
的ImageButton缩略图;
TextView的名称;
}
}
FavoriteClass
公共类收藏{ 私人诠释favoriteThumbnail;
私人字符串favoriteName; 市民最喜爱（INT favoriteThumbnail，弦乐favoriteName）{
超（）;
this.favoriteThumbnail = favoriteThumbnail;
this.favoriteName = favoriteName;
} 公众诠释getThumbnail（）{
返回favoriteThumbnail;
} 公共字符串的getName（）{
返回favoriteName;
}
}
favorite_row.xml
＆LT;？XML版本=1.0编码=UTF-8＆GT？;
＆LT; LinearLayout中的xmlns：机器人=http://schemas.android.com/apk/res/android
机器人：layout_width =FILL_PARENT
机器人：layout_height =WRAP_CONTENT
机器人：方向=横向
机器人：weightSum =4
机器人：descendantFocusability =blocksDescendants＆GT; ＆LT;的ImageButton
机器人：layout_width =75dp
机器人：layout_height =65dp
机器人：contentDescription =缩略图
机器人：SRC =@绘制/ icon_camera
机器人：layout_weight =2
机器人：ID =@ + ID / favoriteThumbnail
机器人：scaleType =fitXY
风格=@风格/ favoriteRowItems
机器人：可聚焦=FALSE/＆GT; ＆LT;的TextView
机器人：ID =@ + ID / favoriteName
机器人：layout_weight =2
机器人：layout_gravity =center_vertical
机器人：文字=姓名
机器人：TEXTSIZE =30sp
风格=@风格/ favoriteRowItems/＆GT; ＆LT;的ImageButton
机器人：contentDescription =方向
机器人：layout_weight =0.5
机器人：SRC =@绘制/ icon_directions
机器人：ID =@ + ID / favoriteDirections
风格=@风格/ favoriteRowItems
机器人：可聚焦=FALSE/＆GT; ＆LT;的ImageButton
机器人：contentDescription =从最爱删除
机器人：layout_weight =0.5
机器人：SRC =@绘制/ icon_delete
机器人：ID =@ + ID / favoriteDelete
风格=@风格/ favoriteRowItems
机器人：layout_marginRight =5DP
机器人：可聚焦=FALSE/＆GT;＆LT; / LinearLayout中＆GT;
解决方案
你的两个按钮添加到 getView 法，包括他们在您的处理程序，然后在一通通过 getView 方法，你要分配一个点击监听器是这样的：
holder.btnDelete.setOnClickListener（新OnClickListener（）{
字符串btnmsg =越来越删除+ favoriteClicked.getName（）;
@覆盖
公共无效的onClick（视图v）{
Toast.makeText（FavoriteActivity.this，btnmsg，Toast.LENGTH_LONG）.show（）;
}
}）;
所以你的 ViewHolder 类将是这样的：
静态类ViewHolder {
的ImageButton缩略图;
TextView的名称;
的ImageButton btnDelete;
的ImageButton btnDirections;
}
和您设置在 getView（）方法的按钮按其他视图
holder.btnDirections =（的ImageButton）itemView.findViewById（R.id.favoriteDirections）;
holder.btnDelete =（的ImageButton）itemView.findViewById（R.id.favoriteDelete）;
I have a listview with a custom Adapter. A custom row in the listView containts 2 imagebuttons that need to handle a something when I click on it. But it doesn't work well like I want, because when I start the app and click on the imagebutton then nothing happens, but if I first click on the row and then on the imageButton, then my click is being handled. I tried a few solutions that helped other users here SO, but nobody had the exact same problem as me that it gets handled after a row click.
FavoriteActivity
public class FavoriteActivity extends Activity {
private List<Favorite> favoriteItem = new ArrayList<Favorite>();
ViewHolder holder = new ViewHolder();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.favorite);
populateFavoriteList();
populateListview();
registerClickCallBack();
}
private void populateFavoriteList() {
favoriteItem.add(new Favorite(R.drawable.icon_camera, "item 1"));
favoriteItem.add(new Favorite(R.drawable.icon_camera, "item 2"));
favoriteItem.add(new Favorite(R.drawable.icon_camera, "item 3"));
favoriteItem.add(new Favorite(R.drawable.icon_camera, "item 4"));
favoriteItem.add(new Favorite(R.drawable.icon_camera, "item 5"));
favoriteItem.add(new Favorite(R.drawable.icon_camera, "item 6"));
favoriteItem.add(new Favorite(R.drawable.icon_camera, "item 7"));
favoriteItem.add(new Favorite(R.drawable.icon_camera, "item 8"));
}
private void populateListview() {
ArrayAdapter<Favorite> adapter = new MyListAdapter();
ListView list = (ListView) findViewById(R.id.favoriteList);
list.setAdapter(adapter);
}
private class MyListAdapter extends ArrayAdapter<Favorite> {
public MyListAdapter() {
super(FavoriteActivity.this, R.layout.favorite_row, favoriteItem);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// To be sure we have a view, because null is possible
View itemView = convertView;
if (itemView == null) {
itemView = getLayoutInflater().inflate(R.layout.favorite_row, parent, false);
}
// Find the item to work with
Favorite currentItem = favoriteItem.get(position);
// Filling the View
holder.thumbnail = (ImageButton) itemView.findViewById(R.id.favoriteThumbnail);
holder.thumbnail.setBackgroundResource(currentItem.getThumbnail());
holder.name = (TextView) itemView.findViewById(R.id.favoriteName);
holder.name.setText(currentItem.getName());
return itemView;
}
}
private void registerClickCallBack() {
ListView list = (ListView) findViewById(R.id.favoriteList);
list.setOnItemClickListener(new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View viewClicked, int position, long id) {
final Favorite favoriteClicked = favoriteItem.get(position);
String msg = "Clicked position " + position + " which is " + favoriteClicked.getName();//Can I use my holder here to get the name back?? Because it wasn't working...
Toast.makeText(FavoriteActivity.this, msg, Toast.LENGTH_LONG).show();
ImageButton btnDirections = (ImageButton) viewClicked.findViewById(R.id.favoriteDirections);
ImageButton btnDelete = (ImageButton) viewClicked.findViewById(R.id.favoriteDelete);
btnDirections.setOnClickListener(new OnClickListener() {
String btnmsg = "getting directions for " + favoriteClicked.getName();
@Override
public void onClick(View v) {
Toast.makeText(FavoriteActivity.this, btnmsg, Toast.LENGTH_LONG).show();
}
});
btnDelete.setOnClickListener(new OnClickListener() {
String btnmsg = "getting delete for " + favoriteClicked.getName();
@Override
public void onClick(View v) {
Toast.makeText(FavoriteActivity.this, btnmsg, Toast.LENGTH_LONG).show();
}
});
}
});
}
static class ViewHolder {
ImageButton thumbnail;
TextView name;
}
}
FavoriteClass
public class Favorite {
private int favoriteThumbnail;
private String favoriteName;
public Favorite(int favoriteThumbnail, String favoriteName){
super();
this.favoriteThumbnail = favoriteThumbnail;
this.favoriteName = favoriteName;
}
public int getThumbnail(){
return favoriteThumbnail;
}
public String getName(){
return favoriteName;
}
}
favorite_row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="4"
android:descendantFocusability="blocksDescendants">
<ImageButton
android:layout_width="75dp"
android:layout_height="65dp"
android:contentDescription="thumbnail"
android:src="@drawable/icon_camera"
android:layout_weight="2"
android:id="@+id/favoriteThumbnail"
android:scaleType="fitXY"
style="@style/favoriteRowItems"
android:focusable="false"/>
<TextView
android:id="@+id/favoriteName"
android:layout_weight="2"
android:layout_gravity="center_vertical"
android:text="Name"
android:textSize="30sp"
style="@style/favoriteRowItems"/>
<ImageButton
android:contentDescription="Direction"
android:layout_weight="0.5"
android:src="@drawable/icon_directions"
android:id="@+id/favoriteDirections"
style="@style/favoriteRowItems"
android:focusable="false"/>
<ImageButton
android:contentDescription="Delete from favorite"
android:layout_weight="0.5"
android:src="@drawable/icon_delete"
android:id="@+id/favoriteDelete"
style="@style/favoriteRowItems"
android:layout_marginRight="5dp"
android:focusable="false"/>
</LinearLayout>
解决方案
Add your two buttons to the getView method, and include them in your handler, then on a pass through the getView method you want to assign a click listener like this:
holder.btnDelete.setOnClickListener(new OnClickListener() {
String btnmsg = "getting delete for " + favoriteClicked.getName();
@Override
public void onClick(View v) {
Toast.makeText(FavoriteActivity.this, btnmsg, Toast.LENGTH_LONG).show();
}
});
So your ViewHolder class will look like this:
static class ViewHolder {
ImageButton thumbnail;
TextView name;
ImageButton btnDelete;
ImageButton btnDirections;
}
and you set up the buttons in the getView() method as per the other Views
holder.btnDirections=(ImageButton)itemView.findViewById(R.id.favoriteDirections);
holder.btnDelete=(ImageButton)itemView.findViewById(R.id.favoriteDelete);
这篇关于处理的ImageButton自定义列表视图里面点击的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
