Develop Reference

Place 2+ Textfields side-by-side in a LinearLayout (horizontal) programmatically

i know, there are a lot of questions like this. I read a lot on stackoverflow and google about this topic, but nothing help me :(
Ok, here is the problem. I have a small app. In this app i have a fragment. The layout.xml for this fragment includes a placeholder linearlayout like the following
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/placeholderLinLayout">
</LinearLayout>
The fragment has a button. If u click on it a DialogFragmentPopup opens and u can enter some data-stuff. After you enter the data you can click on another button on this dialog and the data will be transfere to the main-fragment. Here i call a method which should generate programmatically a layout to present the data. I use the following code
myRoot = (LinearLayout) view.findViewById(R.id.placeholderLinLayout);
innerLayout = new LinearLayout(view.getContext());
innerLayout.setOrientation(LinearLayout.VERTICAL);
innerLayout.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
LinearLayout productHeaderLayout = new LinearLayout(getContext());
productHeaderLayout.setOrientation(LinearLayout.HORIZONTAL);
productHeaderLayout.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
TextView product_header = new TextView(getContext());
product_header.setText("Produkt");
product_header.setLayoutParams(layoutParams);
TextView amount_header = new TextView(getContext());
amount_header.setText("Menge");
amount_header.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
amount_header.setLayoutParams(layoutParams);
TextView packaging_header = new TextView(getContext());
packaging_header.setText("Verpackung");
packaging_header.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
packaging_header.setLayoutParams(layoutParams);
TextView price_header = new TextView(getContext());
price_header.setText("Preis");
price_header.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
price_header.setLayoutParams(layoutParams);
TextView payment_header = new TextView(getContext());
payment_header.setText("Zahlart");
payment_header.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
payment_header.setLayoutParams(layoutParams);
productHeaderLayout.addView(product_header);
productHeaderLayout.addView(amount_header);
productHeaderLayout.addView(packaging_header);
productHeaderLayout.addView(price_header);
productHeaderLayout.addView(payment_header);
innerLayout.addView(productHeaderLayout);
The problem is, that the first textview push all other textviews out of the visible space, see the screenshot
What i want to do is, that these 5 textviews spread out automatically to the existing width. I googled a lot and the code i post here is the result of which i found many times on the internet.
So i hope someone can help find out the problem in my code :)
Greetings

Set all your TextView layout paramters to this:
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, 1f);
And remove .setWidth(ViewGroup.LayoutParams.MATCH_PARENT); from all the TextViews.
This will guarantee that all the views will have same weight set to them, and that weight gives all the views in LinearLayout same Width (or Height if orientation is set to vertical).

The issue is that your setting the TextView to MATCH_PARENT in its width. So one TextView takes the whole screen and the other starts just out of it. To solve this set the layoutparam width to WRAP_CONTENT.
Better yet, if you want to spread it, you can use the LinearLayout's weight property so they take as much space as they can:
textview.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT, 1f));
The third parameter 1f is the weight. A weight of one means it'll take all the available space without intruding on the other children, hence they will all spread evenly.

If you want to have your TextViews side by side, you must set the orientation of the LinearLayout to horizontal instead of vertical

adding linear layout to current view

I'm sure this has come up often, but I couldn't find an exact solution for my issue. I'm simply trying to programmatically create a linear layout with a textview and 2 buttons and add it to the bottom of my fragment (which is also a linear layout). I.e. I want it to appear below the other views on the screen not the actual bottom. However, when I try to add it, it always appears at the top corner and not the end. Here's my code:
LinearLayout layout = new LinearLayout(getActivity());
layout.setOrientation(LinearLayout.VERTICAL);
layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
layout.setBackgroundColor(Color.CYAN);
TextView noteView = new TextView(getActivity());
LayoutParams lparams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
noteView.setLayoutParams(lparams);
noteView.setText(noteText);
layout.addView(noteView);
getActivity().addContentView(layout, lparams);
}

Have you tried to add gravity to the LinearLayout?
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.FILL_PARENT);
params.gravity = Gravity.BOTTOM;
layout.setLayoutParams(params);

If your main goal is to have your views line up relative to each other, perhaps it would be worth considering using a Relative Layout to accomplish a similar task.
If that's not an option for whatever reason, I think LayoutParams has a gravity option that can be set to bottom which will align views to the bottom of the parent view. I can't guarantee this will work though as I usually do not accomplish tasks like these programmatically.

Setting RelativeLayout.ALIGN_PARENT_LEFT to LinearLayout

How can I set the RelativeLayout.ALIGN_PARENT_LEFT to LinearLayout in code? I have a RelativeLayout which child is LinearLayout and I need to set the RelativeLayout.ALIGN_PARENT_LEFT in the child LinearLayout instance. The problem is that when I set it, I will lose the child LinearLayout parameters (I will lose the weight). My understanding is that the only way to set the RelativeLayout.ALIGN_PARENT_LEFT to child element is to use RelativeLayout.Layoutparams when setting the child view layout parameters.
Thanks in advance!!

You have to set the width height parms and weight along with your aligh left rule in programtically
layoutparms = new LayoutParams(WindowManager.LayoutParams.FILL_PARENT,
WindowManager.LayoutParams.FILL_PARENT, weightthere);
layoutparms.addRule(RelativeLayout.LEFT_OF, leftisdeview);
yourview.setLayoutParams(layoutparms);

You just have to give android:gravity="left" to the parent linear layout.Remember that it is gravity not layout_gravity.

Aligning a Linear Layout within a RelativeLayout to the Center and to the Left

Currently I have tried aligning my Linear Layout to the left and center but currently cannot get this to work. See code below:
CustomLinearLayout sideMenu = new CustomLinearLayout(this);
RelativeLayout.LayoutParams sideMenuParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
sideMenuParams.addRule(RelativeLayout.CENTER_VERTICAL);
sideMenuParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
sideMenu.setLayoutParams(sideMenuParams);
sideMenu.setOrientation(LinearLayout.VERTICAL);
sideMenu.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
sideMenu.setBackgroundColor(Color.TRANSPARENT);
//sideMenu.setGravity(Gravity.CENTER);
sideMenu.addView(AppSoups);
sideMenu.addView(salads);
sideMenu.addView(ribs);
sideMenu.addView(favorites);
sideMenu.addView(sandwiches);
sideMenu.addView(sides);
sideMenu.addView(desserts);
RelativeLayout screenLayout = new RelativeLayout(this);
screenLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
screenLayout.setBackgroundResource(R.drawable.body_bkgd);
screenLayout.addView(sideMenu);
setContentView(screenLayout);
CustomLinearLayout is just a class that extends LinearLayout to do some custom drawing. Anyway what I am doing wrong here? So far it aligns left and to the top of the relative layout but i cannot get it to center. Just as a side note both or either or of my rules do not work in conjuction with setting the LinearLayout to the center(i have it commented out in the code). Finally the views that i am adding to the linear layout are just textviews - just FYI(code not shown)

I think you are "overriding the layout params you've set in line 5 with new layout params you are setting in line 7, so
sideMenuParams.addRule(RelativeLayout.CENTER_VERTICAL);
sideMenuParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
are not really taking affect

In here
screenLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
try changing the WRAP_CONTENT to FILL_PARENT

Android FrameLayout and TextView - why does LayoutParams work where setGravity() does not?

I'm using a FrameLayout to display (on demand) some text on the screen. I want the text to be in a certain place, so I thought setGravity() would do the job... but no, it seems to have no effect whatsoever on where the text goes (and other objects like ImageView don't even have this method).
So first, what exactly is TextView.setGravity() used for? (Edit: I understand this much better now, thanks! Still not clear on the following part of the question though.)
Second, it seems the only way to update a FrameLayout in this way is to create a new FrameLayout.LayoutParams object with the settings you want, and then use the setLayoutParams() method to apply it. (This seems to automatically update the view so is a requestLayout() call necessary?) And is there a simpler / more straightforward way to achieve this for a FrameLayout... say, without creating a new LayoutParams object as I'm doing now?
Thanks! For reference, below is a (working) code snippet showing how I'm setting up this FrameLayout and TextView.
FrameLayout fl1 = new FrameLayout(this);
FrameLayout.LayoutParams flp1 = new FrameLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
fl1.setId(9001);
fl1.setLayoutParams(flp1);
.....
tv1 = new TextView(this);
FrameLayout.LayoutParams tvp1 = new FrameLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
(Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM));
tv1.setId(9006);
tv1.setLayoutParams(tvp1); // This works
tv1.setBackgroundColor(Color.GRAY);
tv1.setTextColor(Color.BLACK);
tv1.setText("Dynamic layouts ftw!");
tv1.setGravity(Gravity.CENTER); // This does NOT work
.....
fl1.addView(tv1);

1) view.setGravity means hows the view should positions if children.
In the case of the textview it refers to the positioning of the text.
When in linearlayouts or viewgroups it refers to its child views.
2) I checked your code. You are already using textview.setGravity method. In that case you dont need to specify gravity parameters in the FrameLayout.LayoutParams constructor.
Other thing I noticed is that you gave the textview the width and height as wrap content which will only take the size of the text. So there is no meaning in giving gravity as the textview has no extra area to position the text to the center. You need to give the width of the textview as fill_parent. That should make your gravity property work.
Btw this is a very good article about Gravities. It explains both about gravity and the layout_gravity attribute.
If you want your textview to wrap the content then you should add your textview to a linearlayout and setgravity to the linear layout.
This should give what your are trying to do
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT);
FrameLayout fr = new FrameLayout(this);
fr.setLayoutParams(lp);
fr.setBackgroundColor(Color.RED);
LinearLayout.LayoutParams lp2 = new LinearLayout.LayoutParams(
LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
LinearLayout l = new LinearLayout(this);
l.setLayoutParams(lp2);
l.setGravity(Gravity.CENTER);
l.setBackgroundColor(Color.BLUE);
ViewGroup.LayoutParams vp = new ViewGroup.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
TextView t = new TextView(this);
t.setLayoutParams(vp);
t.setText("Blessan Mathew");
t.setBackgroundColor(Color.CYAN);
l.addView(t);
fr.addView(l);

tv1.setGravity(Gravity.CENTER);
belongs to the gravity of the TEXT inside the TextView.
As documentation states:
Sets the horizontal alignment of the text and the vertical gravity
that will be used when there is extra space in the TextView beyond
what is required for the text itself.