I am trying to create a layout with nested linear layouts and textviews which are placed vertically in a linear layout. They are created programatically. While I can set the height of the linear layout using layout Params I am not able to do this for textview. Using Textview setLayoutParams or setHeight function provides no response. The text is always wrapped around the content (though this is no where mentioned by me in the code). Can someone help me fix this?
this code might help you:
LinearLayout.LayoutParams paramsLayoutExpire = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
TextView txtView=new TextView(this);
txtView.setLayoutParams(paramsTextViewExpire);
LayoutParams.MATCH_PARENT: Height
LayoutParams.WRAP_CONTENT: Width
I hope this might help
TextView textView = new TextView(this);
textView.setText("Hellow World");
textView.setHeight(prefered_height_in_pixel);
this.addView(textView)
Related
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
I have a RelativeLayout where I have one TextView and this element has its android:layout_toLeftOf attribute set to another TextView in this same layout.
Depending on the data received by the app from the server, I need to set the visibility of this one TextView to GONE and set the visibility of a ProgressBar to VISIBLE and then I need the first TextView left align with this Progress bar.
Is this possible to accomplish programmatically?
If not, could you think of a way to tackle the issue?
EDIT
Following below advice, this is how my working code looks like:
TextProgressBar txtProgressBar = (TextProgressBar) v.findViewById(R.id.progressBarPointsInProgress);
TextView offerName = (TextView) v.findViewById(R.id.textViewOfferName);
android.widget.RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams)offerName.getLayoutParams();
params.addRule(RelativeLayout.LEFT_OF, R.id.progressBarPointsInProgress);
params.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
offerName.setLayoutParams(params);
addRule
RelativeLayout.Layoutparams params = (RelativeLayout.LayoutParams)ProgressBar.getLayoutParams();
params.addRule(RelativeLayout.LEFT_OF, R.id.youtTextView);
I've been trying to add multiple textviews and buttons when onClick, and this is the best code I have found that actually works:
RelativeLayout relative = (RelativeLayout) findViewById(R.id.RelativeLayout01);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
(LayoutParams.WRAP_CONTENT), (LayoutParams.WRAP_CONTENT));
TextView tv = new TextView(getApplicationContext());
tv.setLayoutParams(lp);
tv.setText("Shift" + mShiftCount);
EditText edittv = new EditText(getApplicationContext());
edittv.setLayoutParams(lp);
relative.addView(tv);
relative.addView(edittv);
This seems to be the best code to add additional items that are alike to that of what I already have in my main.XML file.
My issue is that when these are added, they appear at the top of the screen and I am unsure how to add further parameters to the objects.
How would I go about placing the textview and edittext below my other elements specified in the XML?
What you need to do is create a RelativeLayout.LayoutParams (refer here) when you add the views like tv and edittv to the RelativeLayout. In your RelativeLayout.LayoutParams, you need to define the same parameters you would give to your other RelativeLayout objects. Here is an example:
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.BELOW, R.id.idOfWhatYouWantToBeBelowOf);
addView(tv, params);
First off there are definitely some static components to your view and some dynamic components. can you please specify what is your layout file so that i can give you a much more detail in your application.
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.
I have dynamically made a TableRow with an ImageButton and a TextView.
I've set a gravity on my TableRow using TableRow.setGravity(Gravity.CENTER_VERTICAL);
Then, on my TextView, I'm using this code
TextView tv = new TextView(this);
tv.setText(functie[beschrijving]);
tv.setWidth(300);
//tv.setHeight(60);
tv.setGravity(Gravity.CENTER_VERTICAL);
tv.setPadding(15, 0, 10, 0);
tr.addView(tv);
When I do this, I'm getting this result. It's not quite centered, it looks like the text right below the center. Does anyone know how to put the text completely in the center?
Hi
I think you should use the following property of Parent Layout
android:layout_centerVertical="true"
maybe this code help you.
android.widget.TableRow.LayoutParams params = new android.widget.TableRow.LayoutParams();
params.gravity = Gravity.CENTER_VERTICAL;
tr.addView(tv, params);
But I'm not sure.