I am using listviews instead of button in my application. I want to set OnClickListener() on listview instead of setOnItemClickListener().
here is my code:
listview.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(new Intent(getApplicationContext(), BillingActivity1.class));
}
});
can someone suggest a method to do OnClickListener()?
thank you
Ok, I understood your problem.
Lets analyze cases:
Listview with items
If your ListView has some items, the good approach is to set anyway an onItemClickListener and, based on which item has been clicked, do something. You can also do the same thing for each item without considering which item has been pressed, but this is still the best approach.
ListView with no items
From Docs:
the list view will be hidden when there is no data to display.
ListView (usually) has the height set to wrap_content, so even setting the onClickListener on an empty list won't work since the list will result having height of 0, being not able to be clicked (you can't click a view with no height since it is not visible).
Perform actions on an empty ListView
If, as it looks like, you need to do some stuffs on your ListView even if it's empty, just add a Button or a FloatingActionButton to your Activity and then use those: you can both keep the button in any case (like an "Add item" Button) or you can make it visible only if the ListView is empty. something like:
xml
<Button
android:id="#+id/buttonEmptyListStuffs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="List is empty, click me!"
android:visibility="gone"/>
activity
//init the button and do other stuffs
...
buttonEmptyListStuffs.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//go to activity 2
}
});
...
List<MyListViewItem> myListViewItems = //init your list of items for the listView
buttonEmptyListStuffs.setVisibility(myListViewItems.size() > 0 ? View.GONE : View.VISIBLE);
...
Note: I wrote this code by hand without compiler so it might not be perfect, just take the concept behind it
As Pskink said from comments
I forgot to mention that ListView has setEmptyView(View) which allows you to set a custom layout for the Listview if it is empty. Refer to his link for a good tutorial
USe this:
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
startActivity(new Intent(getApplicationContext(), BillingActivity1.class));
}
});
If you really want to handle click on any Point of your listView. You can put the list inside a FrameLayout or LinearLayout and then add your onClickListener on the layout.
findViewById(R.id.my_parent_list_layout).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// DO your stuff
}
});
If your list item count is empty the dynamaically change the visibility of the list view with a button(switching the visibility with list view and button) and give the click action to the button.
Related
I have an Activity a with a ListView lv inside.
I have set the lv.setOnItemClickListener().
When the user clicks on a list item i want another list view (ListView lv_2) in the Activity a to be refreshed.
Problem is that i cannot access the Parent Activity a inside lv.setOnItemClickListener() am i right?
I studied some of custom event listeners but i don't understand how to use them in this particular case.
So how can i do this?
lv1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
lv2Adapter.notifyDataSetChanged();
lv2.setAdapter(lv2Adapter);
lv2.notify();
}
});
item of my recycler view has some different views which has to have a click listener if i add a click listener to recycler view with view and position parameters it always take the layout behind the views on click. Therefore, i am setting my click listeners in onBindViewHolder like this:
holder.myTextView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// stuff
}
});
holder.myImageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// stuff
}
});
I wonder whether it is a correct method?
Where should a click listener be in a recycler view?
There are many ways for achieve this, but ;
Both is correct as i see on your codes.Means, if you set those items with myTextView, the users will be able to click on TextView (f.g) for showing that RecyclerView item content or whatever and other stuffs like ImageView won't work for listener.
And this is correct for myImageView too, if you set those items with it for listener, the users will be able to click only in this myImageView.
By the way, i think it is better to use implements View.OnClickListener for whole of the Holder.
Something like this:
https://stackoverflow.com/a/24471410/4409113
or Jacob's answer
Further details:
If I do not set a OnClickListener on my View, Android seems to automatically handle the OnClick state of my View and changes the background of the view to show that it was clicked. Yet if I add an OnClickListener of my own, there is no visual change shown, is there something I need to call to show the state change?
This View is also found in a ListView (not sure if this helps though).
Here's how I set the OnClickListener on my View:
items.add(new EntryItem("Profile", R.drawable.ic_action_user, null,
new OnClickListener() {
#Override
public void onClick(View v) {
self.closeDrawer();
Intent userView = new Intent(self,
UserViewActivity.class);
userView.putExtra("username", "kortank");
self.startActivity(userView);
}
}));
This View is also found in a ListView (not sure if this helps though).
If you set a click listener for a list item, the listView's onClick listener for the list item(the one that changes the background and etc) is overriden. Try using the ListView.setOnItemClickListener instead.
I have a list of items in Listview.
In each row, I have Text and image. Currently, the click effect is there for the entire row. I want to add a specific click effect to text view and image.
How to do that?
I guess you have a custom adapter for your listview... so if you override the getView method, there you can set the onclick listener for each of your views.
image.setOnClickListener(new OnClickListener()
{
#Override
public void onClick()
{
// Do something
}
});
and
text.setOnClickListener(new OnClickListener()
{
#Override
public void onClick()
{
// Do something
}
});
Now, Doyou want the same listener defined in onItemClickListener in each of your views? easy: you can define your performance in another method, and only call it where you want.
I hope this help
I found a similar question about scrolling listview and button click but it did not help me. My issue is:
I have a listview with custom rows. I have two different states of listview; the switch between the states is a button at the bottom of the screen. The second state has delete buttons in every row. When I click on delete button in a specific row, that row is removed from database and listview is updated. Everything works great except I need to click the delete button twice in order for it to work. Below is my code for handling the clicks. flag==1 is the second state of the listview.
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
View main = parent.getChildAt(position);
TextView delete = (TextView)main.findViewById(R.id.delete_button);
if(flag==0){
switchToItemsView(id);
}
if(flag==1){
delete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mDbHelper.deleteList(id);
updateListView();
}});
}
}
I tried to set parent view's focusableInTouchMode attribute to false as suggested in another post but it did not help.
If you can help me solve this I will be grateful,
Thank you in advance.
Probably you have focus. Remove it.
android:focusableInTouchMode="true"
android:focusable="true"
You need to declare the onClickListener before the actual flag check; in your case the view changes and with that the flag, and the listener is set. The next click actually triggers the listener.
Not related, but you should change your second if to an elseif since there is no way it would be called if the first one is called.
After spending hours I figured out how to do it:
I moved my click listener from my main activity class to my custom ListAdapter class and modified it a little like below;
deleteButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int rowid = Integer.parseInt(rowIds.get(position));
mDb.deleteList(rowid);
lists.remove(position);
notifyDataSetChanged();
}
});
Now it works great. When I click delete button it removes the list both from the ArrayList (the one used in ListAdapter) and from database.