I'm trying to achieve the following layout: a fixed width TextView aligned to the left of its parent, with the text inside it aligned to the right side of that TextView (that's why fixed width, can it be done other way?) and the rest of the parent is filled with a drawable (simple line). Like this:
It's a ListView containing 2 types of rows and the layout for the rows with lines is quite trivial - LinearLayout with TextView and ImageView (I can post the exact code later if needed). And I'm getting a warning that it could be replaced with a single TextView with compound drawable.
I'm all for optimization so I really tried to follow that advice. Unfortunately I wasn't able to get the same result - the line is either constrained to TextView's width or text is aligned to the right side of the ListItem, now to fixed position.
Am I missing something?
Edit: Apparently it is not actually possible and since there are some other complications (the drawable is now a level-list drawable, which is not always a line and sometimes it has a non-fixed height that I have to set) I will leave it as it is now - linear layout, containing one TextView and one ImageView.
I don't think that you're missing anything. The TextView compound drawable features are not very customizable and in general are not worth the time you spend trying to get them to look right. Some lint warnings are a little overzealous and premature.
The optimization that the lint refers to is something that is better attributed for a fixed size image. In your case, the line has to stretch the rest of the screen length and as such it is not something that can be done with a textview with compound drawable. This kind of lint warning is more of a suggestion rather than something that MUST be done and is detected by just checking for a linear layout with only a textview and an imageview rather than checking what would need to go in the image view. If you already have it working the way you did it I think you should leave it alone.
Your view create from this -
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="#+id/time"
android:layout_width="#dimen/today_time_width"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:gravity="right"
android:layout_marginRight="5dp" />
<ImageView
android:layout_gravity="center"
android:id="#+id/border"
android:layout_width="match_parent"
android:layout_height="#dimen/today_current"
android:src="?attr/item_boundary" />
</LinearLayout>
There is no way to achive this using only standart TextView. If you really want to reduce view count you can create your custom TextView class, set layoutWidth to matchParent and draw line from text end to right border. But it's not worth to be doing. Some extra views won't slow your list.
I am not sure if you will be able to achieve what you really want to , but then you could change the linear layout in the link you posted to something like this:
<RelativeLayout
android:id="#+id/relTrial"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/txtTime"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:gravity="right"
android:text="12:45 AM"
android:layout_alignParentLeft="true"/>
<LinearLayout
android:id="#+id/lnrSep"
android:layout_width="fill_parent"
android:layout_height="1dp"
android:gravity="bottom"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_centerVertical="true"
android:orientation="horizontal"
android:background="#android:color/darker_gray"
android:layout_toRightOf="#+id/txtTime"
android:layout_alignParentRight="true"></LinearLayout>
</RelativeLayout>
This way the time text will be right aligned although being at the left side, and the line will also be visible.
Hope that helps.
If I got you right, you want to add bottom border to list view item?
What about to try this:
android:drawableBottom="#drawable/line"
Related
I am trying to make a layout like Telegram message box in android.
When the text is short the message and time are aligned in one single line as follows:
But when the message text is longer the time text view is pushed to the bottom of message like this:
How can i achieve this?
P.s. I tried to read the telegram source but wasn't able to figure it out. And i tried to get the size of my text view in adapter but wasn't successful.
Your shown example looks like a RelativeLayout with two TextViews in it (first TextView top-left and second TextView bottom-right).
It should be possible to accomplish this by using a RelativeLayout and two TextViews. The TextViews should be positioned correctly based on the length of the text (the second TextView displaying time should be always in bottom-right corner).
Actually they are not aligned in one line... :D I think you can achieve this by wrapping your TextView for time in RelativeLayout like that:
<LinearLayout android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#drawable/background"
android:padding="10dp" >
<TextView style="#style/TextView_port"
android:id="#+id/text"
android:text="Text" />
<RelativeLayout style="#style/LinearLayout"
android:layout_below="#id/text"
android:layout_margin="10dp"
android:gravity="right" >
<TextView style="#style/TextView_port"
android:text="3:59pm"
android:textColor="#73B661" />
</RelativeLayout>
</LinearLayout>
Here i found a trick to set your text alignment to justify:
https://dzone.com/articles/android-%E2%80%93-how-display
EDIT
I finally came up with the solution - the edited code above is for short texts. Check programatically the length of the text and if it is more than 20 for example set orientation of the Linear to vertical and only top margin of the time TextView to -20 - I'll update my answer later if you don't know how :)
I have this layout as my list items:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:gravity="center_vertical"
android:layout_width="match_parent"
android:orientation="horizontal"
android:minHeight="42.3dp"
android:layout_height="wrap_content">
<TextView android:id="#+id/txtTagName"
android:textColor="#color/White"
android:layout_width="wrap_content"
android:layout_height="32dp"
android:layout_marginLeft="10dp"
android:textSize="13sp"
android:gravity="center"
android:layout_gravity="left"
android:background="#drawable/tag"/>
<ImageView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_action_discard"
android:layout_marginLeft="10dp"
android:layout_gravity="right"
android:gravity="center"
android:scaleType="center"
android:alpha="0.5"/>
</LinearLayout>
It looks like this:
The tag patch 9 looks like so:
I have 3 questions:
How to make the delete icon always on the right.
How to make the blurry part of the tag image scale properly? (its a patch 9)
Is it better to have a delete icon next to the tag, or use some sort of long click?
Thank you.
How to make the delete icon always on the right.
Use RelativeLayout instead of LinearLayout and use the property android:layout_alignParentRIght="true". left and right layout_gravity does nothing in a horizontal LinearLayout since that ViewGroup already lays Views out from left to right.
How to make the blurry part of the tag image scale properly? (its a patch 9)
Not sure without knowing more about the image but should be the same as the other image.
Is it better to have a delete icon next to the tag, or use some sort of long click?
This is relative to the users who will use your app, I suppose. The delete icon I think is fine and is more explicit. However, most users nowadays, especially younger ones may understand to long click depending on how your whole app works. However, since you have the room, I think the delete icon is probably good.
How to make the delete icon always on the right.
in your xml item layout, for your imageview of the delete icon, add android:layout_weight="0"
How to make the blurry part of the tag image scale properly? (its a patch 9)
sorry, no idea
Is it better to have a delete icon next to the tag, or use some sort of long click?
depends on the app, if there will be other options other than delete, then make all of them in long click, otherwise leave the icon, IMHO
I have a layout/alignment problem with a TextView which I haven't yet been able to find a solution for, that is, I want to align text off-center inside a TextView horizontally.
To give a little more context, I have an ImageView and a TextView side by side, the ImageView touching the left edge of the screen and the TextView filling the rest of the screen horizontally, like this:
[-img-|-----text-----]
The TextView is configured as singleLine="true" and maxLines="1", so that it will be truncated if its too long for its horizontal space. My aim is to align the text in the center of the screen, not the center of the TextView, because there are other elements on the screen that are aligned to the center and I need the text aligment to match that.
So, if I use gravity="center" on the TextView, I get the image above, but what I actually want is
[-img-|--text--------]
I tried putting image and text in a RelativeLayout, so that the TextView actually touches both edges of the screen, which does what I want with respect to the alignment, except that if the text is long enough, the first characters will be hidden by the image, since the TextView lies behind the image view.
I also experimented with margins, padding and a compound drawable to the left, but the text is always centered relative to the available space (which I would consider the expected behavior).
Does anybody have any clues on how to achieve this alignment, i.e. relative to the center of a different component than the TextView, maybe programmatically at runtime? Thanks in advance for any helpful advice.
Edit: user Budius suggested using padding to the right to achieve a centered alignment which works but leads to long texts being truncated before the right edge of the TextView is reached and I'm looking for a solution that avoids that, i.e. that uses the entire avilable space, if possible.
I believe that will center it and the move 20dp to the side.
gravity:centre padding:right=20dp
Try using
android:layout_weight="1"
if it helps you..
I know this is not the correct approach than too give it a try..
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight=".33"
android:src="#drawable/ic_launcher" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight=".33"
android:gravity="center"
android:text="text" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight=".33"
android:src="#drawable/ic_launcher"
android:visibility="invisible" />
I want to draw an image on the left of an EditText. I don't want the image appear insde the EditText though.
I use this:
<EditText
android:id="#+id/firstNameTxt"
style="#style/UserInfoInputs"
android:drawablePadding="20dp"
android:drawableLeft="#drawable/first_name" >
</EditText>
It displays the image inside of the EditText. However I use this on TextView and it works fine:
<TextView
android:id="#+id/positionValue"
style="#style/userInfo"
android:drawableLeft="#drawable/position" />
How this can be done for an EditText?
try this
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/go_image"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="#drawable/icon"
/>
<EditText
android:id="#+id/url"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:lines="1"
android:layout_weight="1.0" />
</LinearLayout>
let me know if this works.
The difference between the two use-cases you describe are simple. There is no difference. With an EditText, there are lines that are easily discernible. With a TextView there is not. Try setting the background property of the textview, and you'll see that the drawable is, in fact, drawn on the left side, but still 'inside', the TextView.
The simplest way to accomplish your task (as described) is to utilize an ImageView. Depending on what ViewGroup (LinearLayout, RelativeLayout, etc) you're using, the code may be a bit different; so, update your question with the appropriate info and I'll make my answer a bit more specific.
I should note that, another method you could use is to create your own custom component, which is really very easy to do. See this article Custom Components | Android Developer, be sure to scroll down to the Compound Controls heading title "Compound Controls". This would be especially helpful when this is a 'common' format of controls that you'll use often (I.E. you have an image next to a TextView throughout your app).
That is because the background part of the EditText stretches behind the entire contents of the view, including the drawables.
If you are using a RelativeLayout you can just add a separate ImageView:
<ImageView
layout_width="wrap_content"
layout_height="wrap_content"
layout_toLeftOf="#+id/firstNameTxt"
src="#drawable/first_name"
other imageview attributes as neccessary...
/>
<EditText
android:id="#+id/firstNameTxt"
style="#style/UserInfoInputs"
/>
Or if you use another kind of layout, create a LinearLayout-wrapper:
<LinearLayout
layout_width="wrap_content"
layout_height="wrap_content">
<ImageView
layout_width="wrap_content"
layout_height="wrap_content"
layout_toLeftOf="#+id/firstNameTxt"
src="#drawable/first_name"
other imageview attributes as neccessary...
/>
<EditText
android:id="#+id/firstNameTxt"
style="#style/UserInfoInputs"
/>
</LinearLayout>
I have a row of buttons with custom 9 patch images, and variable length text. I would like the buttons to be the same height. When the text is long enough to wrap, it expands the button size, making the button with wrapped text bigger than the others. I'm laying these buttons out in code in linear layouts. I can fix the size of the button, but then it just cuts off the bottom. How can I make the text take up more of the padding space of the button, so that the text butts up against the top line of the button?
9patch content area is just used to set a padding. If you change the button's padding you will override the one set by the 9patch.
edit
try something like this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button android:text="ButtonButton"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:paddingTop="0dp"
android:paddingBottom="10dp"/>
<Button android:layout_width="wrap_content" android:text="Button"
android:layout_height="match_parent"/>
<Button android:layout_width="wrap_content" android:text="Button"
android:layout_height="match_parent"/>
</LinearLayout>
this way the button will be as high as the others. Sadly, I don't know if it depends on the original button's 9patch that might have asymmetrical paddings, but I can't make the text align with that from other buttons (I think gravity is by default set to center). Maybe with your 9patch it works though. (EDIT: oh, but if you'll have two lines of text who cares about alignment)
Ultimately I was unable to find a nice way of doing this without creating a custom view class.