Develop Reference

Programmatically make a click or touch an item in recyclerview

How to force a click or touch an item on a recyclerview?
I found people talking to use a command recyclerView.findViewHolderForAdapterPosition(0).itemView.performClick() but recyclerView.findViewHolderForAdapterPosition(0) always returns null!
I want initially that the first recyclerview item is clicked/ touched.

new Handler().postDelayed(new Runnable() {
#Override
public void run() {
recyclerView.findViewHolderForAdapterPosition(position).itemView.performClick();
}
},100);

Set a ListView scrolled to bottom at app start? (android)

I dont want to scroll it (becz i think it takes time and perfomance to scroll). I want to set it already scrolled to bottom at the start of the activity like whatsapp.
How could this be done?

If you want your ListView to be always scrolled at the bottom even on updating, you can add these attributes to the list:
android:stackFromBottom="true"
android:transcriptMode="alwaysScroll"
Otherwise use :
listView.setSelection(adapter.getCount() - 1);

listview.setSelection(LastItemIndexInListView);
LastItemIndexInListView : size of listview - 1.

listView.post(new Runnable() {
#Override
public void run() {
listView.scrollTo(0, listView.getBottom());
}
});
Give this a shot.

listView.post(new Runnable() {
#Override
public void run() {
listView.setSelection(listView.getCount() - 1);
}
});
This should work for you

Android - scroll to a specific vieu with small device

I want to scroll to a specific inflated view in ScrollView but after the scroll the item is either more below or partially shown.
Here's my code :
page.postDelayed(new Runnable() {
#Override
public void run() {
page.computeScroll();
page.smoothScrollTo(0, myView.getBottom());
// ...
}
}, 200);
If you have an idea, or you need more explanations, please tell me.

Android scroll up

I have two buttons Button 1, Button 2 placed horizontally like tabs. On Click of these button I am adding Linear Layout in Scroll View.
Now suppose I am clicking Button 1 and scroll down and immediately switch or click to Button 2 that scroll applies on newly added layout. I want every time on click of button content should scroll to top.
I have tried scrollview.scrollT0(0,0) and scrollview.scrollTo(0,scrollview.getTop()) but none of them is working.

I've ran into these types of issues before.
I suggest trying the following:
scrollview.post(new Runnable() {
#Override
public void run() {
scrollview.scrollTo(0, 0);
}
});
The reason this works is forces the action in the Main Thread which is where all UI Activity happens (safely, of course).

Try this . Just it is sample
private void scrollMyListViewToBottom() {
your_list.post(new Runnable() {
public void run() {
if (!running) {
// Select the last row so it will scroll into view...
your_list.setSelection(your_list.getCount() - 1);
running = true;
}
}
});
Note :
Before call this method just change Boolean running = false;

Scroll ListView to show footer

I have a ListView which displays search results. When a search is being performed, I add a footer to the ListView which indicates that a search is in progress. I'd like to programmatically scroll my ListView to the bottom so the footer is visible to the user. Ideas?
My app is targeted to 2.1+

Use this method to scroll the ListView to bottom.
private void scrollMyListViewToBottom() {
myListView.post(new Runnable() {
#Override
public void run() {
// Select the last row so it will scroll into view...
myListView.setSelection(myListAdapter.getCount() - 1);
}
});
}
Taken from Listview Scroll to the end of the list after updating the list

try with this
lv.post(new Runnable() {
#Override
public void run() {
lv.setTranscriptMode(ListView.TRANSCRIPT_MODE_ALWAYS_SCROLL);
lv.setStackFromBottom(true);
}
});