Develop Reference

Xamarin dynamically added views using inflater inside loop adding only one entry

I followed the below link to dynamically add a layout multiple times using inflater and AddView()
Is there a way to programmatically create copies of a layout in android?
I used a loop to create multiple entries. But only one entry is comming up which is the result of last loop index
Below is my C# code
I can see only one child inside the parent which is the result of last loop.
What I missed?
var parent = FindViewById<RelativeLayout>(Resource.Id.ParentLayoutWrapper);
for (int i = 0; i < 4; i++)
{
var view = LayoutInflater.Inflate(Resource.Layout.RepeatingLayout, parent, false);
var txtView = view.FindViewById<TextView>(Resource.Id.textViewSample);
txtView.Text = i.ToString()+ " Android application is debugging";
txtView.Id = i;
parent.AddView(view, i);
}

The original post you worked from had a LinearLayout as the parent layout, not a RelativeLayout like you have. When you add a view (or another layout) to a LinearLayout, it gets positioned below (when LinearLayout has vertical orientation) any existing elements in the layout. However, the elements in a RelativeLayout need to use positioning properties to determine where they will be in the RelativeLayout, so every time you add the new layout, RepeatingLayout, since you are not changing the layout options, the view/layout is added over the existing view/layout. So change the parent layout to a LinearLayout in your layout file and then this should work:
LinearLayout parent = FindViewById<LinearLayout>(Resource.Id.parentLayout);
for (int i = 0; i < 4; i++)
{
var view = LayoutInflater.Inflate(Resource.Layout.RepeatingLayout, null);
var tv = view.FindViewById<TextView>(Resource.Id.textViewSample);
tv.Text = i.ToString() + " Android application is debugging";
parent.AddView(view);
}
Trying to do the same with a RelativeLayout as the parent layout highly complicates things unnecessarily.

Android : Looping through big numbers of ImageButtons

I am applying images to my ImageButtons in code, but I'm wondering if there is a better way than shown in my example. I definitely know that it's not the correct way to do it as it can take way too much time with large numbers of views.
btn1.setImageResource(R.drawable.plus);
btn2.setImageResource(R.drawable.plus);
btn3.setImageResource(R.drawable.plus);
btn4.setImageResource(R.drawable.plus);
btn5.setImageResource(R.drawable.plus);
btn1.setAdjustViewBounds(true);
btn1.setPadding(0,0,0,0);
btn2.setAdjustViewBounds(true);
btn2.setPadding(0,0,0,0);
btn3.setAdjustViewBounds(true);
btn3.setPadding(0,0,0,0);
btn4.setAdjustViewBounds(true);
btn4.setPadding(0,0,0,0);
btn5.setAdjustViewBounds(true);
btn5.setPadding(0,0,0,0);

you need to get the root view in the activity, cast it to ViewGroup, get all children, check their type and update accordingly. Namely as follows,
ViewGroup rootView = (ViewGroup) findViewById(android.R.id.content);
int children = rootView.getChildCount();
for (int i = 0; i < children; i++) {
View view = rootView.getChildAt(i);
if (view instanceof ImageButton) {
((ImageButton) view).setImageResource(R.drawable.plus);
((ImageButton) view).setAdjustViewBounds(true);
((ImageButton) view).setPadding(0,0,0,0);
}
}

Android, find childviews of parent view

I have problem finding childviews of parent view in android, i do the following
i have a relative layout with 2 textviews and 1 edit text view(for example call this whole view as c1)
i add the above view c1 to a linear layout using linearlyt.addView(c1)
i add multiple such child views to parent view
After adding many such child views to linearlyt, i start filling out the edit text of each child view, the question is How can i get the content/text set in Textview of child view whose edit text is being filled out.TIA

Try this..
public void findEditText(View parentview) {
if (!(parentview instanceof EditText)) {
System.out.println(((EditText)parentview).getText());
}
// If a layout container, iterate over children and seed recursion.
if (parentview instanceof ViewGroup) {
for (int i = 0; i < ((ViewGroup) parentview).getChildCount(); i++) {
View innerView = ((ViewGroup) parentview).getChildAt(i);
findEditText(innerView);
}
}
}

The first answer is good. If you need something more specific to your case given the constant structure of your rows...:
for (int i = 0; i < yourLinearLayout.getChildCount(); i++) {
RelativeLayout relativeLayout = (RelativeLayout) yourLinearLayout.getChildAt(i);
TextView textView1 = relativeLayout.getChildAt(0);
TextView textView2 = relativeLayout.getChildAt(1);
EditText editText = relativeLayout.getChildAt(2);
...
}

How to know linearlayout has reached its last child item

Actually In my project I am dynamically adding a child item inside linearLayout but when last child is reached inside linearLayout i have to load other child same as facebook scrolling. But to know when the last element of linearLayout is arrived?

getChildCount() and also getChildAt() like this may be help you -
int childcount = ll.getChildCount();
for (int i=0; i < childcount; i++){
View v = ll.getChildAt(i);
if(i == (childCount -1)){
// Do your Task here
}
}

Code snip :
LinearLayout myLayout;// ur layout
int childCount = myLayout.getChildCount();
View v = null;
for(int i=0; i<childCount; i++) {
v = layout.getChildAt(i);
//do something with your child element
}

Android: Adding multiple Views to a Linear Layout dynamically

I checked the solution here:
Adding multiple views of the same type
Its given that, create a new View everytime you add it instead of changing only 1 view.
But i am doing this:
for (int i = 0; i < 10; i++) {
LayoutInflater vi = (LayoutInflater) getApplicationContext().getSystemService(
CommentsActivity.LAYOUT_INFLATER_SERVICE);
View cv = vi.inflate(R.layout.item, null);
TextView textView1 = (TextView) cv.findViewById(R.id.tv1);
textView1.setText("-" + i);
TextView textView2 = (TextView) cv.findViewById(R.id.tv2);
textView2.setText("--" + i);
LinearLayout insertPoint = (LinearLayout) findViewById(R.id.layout);
insertPoint.addView(cv, 0, new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
}
so its like creating a new inflater and view for every i. But i am only getting the last item.
ie.., only 1 inflatedView with tv1 as -9 and tv2 as --9
seems like everytime i go into the for loop, the old view is being replaced by the new view. How to add all the 10 views??
ThankYou

usually I use this
private void renewDetail(){
llDetail.removeAllViews();
for (int i = 0; i < 10; i++) {
llDetail.addView(new ChildDetailNotePieDiagram(context, "Name", 1000, 10));
}
}
the logic is first I clear all view from the parent layout and then add view to the parent layout.
where llDetail is a linear layout and I create a linear layout class ChildDetailNotePieDiagram and add it to the linear layout so basically it's a different solution from what you use now
but I think you can try my solution if you want :)
feel free to ask any question about this in the comment