I'm trying to update the content of a TextView with the data introduced by an EditText. But after change the text, if the original text (hint) was bigger than the new text, the width doens't change.
I have the next string in the Hint Attribute of the TextView, "Please, introduce a amount". If I put 25'5, for example, the textview doesn't resize it width.
First Screen
Second Screen
The Euro symbol is invisible behind the textview, and It's shown after insert some value.
The piece of code for the Amount:
<RelativeLayout
android:id="#+id/rlImporte"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/rel_layout_colors"
android:clickable="true"
android:paddingTop="8dp"
android:paddingBottom="8dp">
<ImageView
android:id="#+id/lst_img3"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_margin="5sp"
android:layout_marginTop="5dp"
android:src="#drawable/icon_importe"/>
<TextView
android:id="#+id/tvImporte"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="false"
android:layout_marginTop="5dp"
android:layout_toRightOf="#+id/lst_img3"
android:text="#string/IMPORTE_TITLE_STRING"
android:textColor="#android:color/black"
android:textSize="#dimen/title_text_size" />
<TextView
android:id="#+id/tvImporteDesc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/tvImporte"
android:layout_toRightOf="#+id/lst_img3"
android:textColor="#android:color/darker_gray"
android:textSize="#dimen/subtitle_text_size"
android:visibility="visible"
android:hint="#string/IMPORTE_PLACEHOLDER_STRING"
android:textColorHint="#android:color/darker_gray"
android:ellipsize="start"
android:layout_marginRight="4dp" />
<TextView
android:id="#+id/tvEuroSymbol"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/tvImporte"
android:layout_toRightOf="#+id/tvImporteDesc"
android:textColor="#android:color/darker_gray"
android:textSize="#dimen/subtitle_text_size"
android:visibility="gone"
android:hint="#string/euro_symbol"
android:textColorHint="#color/blue_quantion"
android:ellipsize="start"
android:paddingLeft="4dp" />
</RelativeLayout>
You seem like you want to change the width of tvImporteDesc dynamically. The short of it is that Android does not allow this, though some people have developed work arounds. (Toggling the visibility that some answers suggest did not work for me). Similar questions:
Change Relative layout width and height dynamically
WRAP_CONTENT not working after dynamically adding views
Since you are trying to fit text on the same line it might be easier to use a single TextView for that line of text, and concatenate the euro symbol?
Related
The situation is the same no matter if I use LinearLayout or RelativeLayout. I think this is a old Android XMl bug, but I have no idea why it still exists.
Namely, in a layout where an ImageView is on the right side of a TextView can disappear from the screen when text becomes too long. It simply pushes it off the screen. I must NOT make TextView single line.
Here is the XML.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:id="#+id/txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="some long text blahblahblahblahblah"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="17sp"
android:layout_marginRight="10dp"
android:layout_centerVertical="true"
/>
<ImageView
android:layout_toRightOf="#+id/txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/key"
android:layout_centerVertical="true"
/>
</RelativeLayout>
I cannot use layout_weight attribute as image will then stick to the right side of the screen. It HAS to be on the right side of the text.
Anyone has any ideas how to solve this bug?
Check images when the text is short and long. On the 2nd image the text is long and the image is being pushed away from the screen.
You can achieve your task, if you use the layout_weight properly. Please refer the code below:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="horizontal"
>
<TextView
android:id="#+id/txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="The quick brown fox jumps over the lazy dog. As you can see it easily handles the long length of the text"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="17sp"
android:layout_marginRight="10dp"
/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher"
/>
</LinearLayout>
The output for long text:
The output for short text:
EDIT:
This works because of the layout whose width is set as wrap_content. If it were match_parent then in all cases, all the extra space would have been given to TextView because of it's layout_weight but since the parent is wrap_content, there is no extra space for the TextView to fill when the text is small. But when the text is large, the weight property is applied to the TextView but since there is no layout_weight for the ImageView hence, it takes only the amount of space it has to.
Set
android:layout_marginRight="30dp"
for the TextView
and
android:layout_marginLeft="-20dp"
for the ImageView
You can change the values depending on your needs.
But, if the image can have different sizes, you will have to set margins programmatically.
there is 2 solutions for these
either set the image as a drawableRight to the textview
<TextView
android:id="#+id/txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="The quick brown fox jumps over the lazy dog. As you can see it easily handles the long length of the text"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="17sp"
android:layout_marginRight="10dp"
android:drawableRight="#drawable/ic_launcher"
/>
or
alignt the image to right and make textview toleft of the image
I need to display two single-line TextViews horizontally. The left TextView (let's name it 1) may have a longer text which may shortened and finished with "...". The right text view (2) has a short text and should never get shortened.
I want the 1 to remain aligned to the left end of the parent. The 2 aligned to the right side of 1.
There are now 2 conditions that I have to meet
a) if the 1 has a short text then the 2 should get aligned to the right of 1 (none of the gets shortened).
b) but if the 1 has a too long text then the text of 1 should be shortened by '...' while the view 2 is moved maximally to the right of the parent but still remains fully visible (no ...)
My current solution is the following below. The scenario b) is fine with mine, but in case of a) the problem is that the view 2 is moved to the right side of the parent and the 1 to the left side - both are short and there's pretty much space in between which looks odd. I want 2 to move to the further left (next to 1) and leave this space on the right side.
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_marginTop="1dp"
android:layout_weight="0.5">
<TextView
android:id="#+id/ns_in_txt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:gravity="top|left"
android:maxLines="1"
android:singleLine="true"
android:textColor="#00a2ff"
android:textSize="18sp" />
<TextView
android:id="#+id/ns_txt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#id/ns_in_txt"
android:gravity="top|left"
android:maxLines="1"
android:singleLine="true"
android:textColor="#00a2ff"
android:textSize="18sp" />
</RelativeLayout>
Try doing this
<RelativeLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_context"
android:layout_marginTop="1dp">
<TextView
android:id="#+id/ns_in_txt"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_alignParentRight="true"
android:gravity="left"
android:maxLines="1"
android:ellipsize="end"
android:singleLine="true"
android:textColor="#00a2ff"
android:textSize="18sp" />
<TextView
android:id="#+id/ns_txt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#id/ns_in_txt"
android:gravity="left"
android:maxLines="1"
android:singleLine="true"
android:textColor="#00a2ff"
android:textSize="18sp" />
</RelativeLayout>
Apparently, you want two scenarios which require to set a different orientation to the parent layout: first horizontal, second vertical. Maybe I'm wrong (and I hope so but) in static xml, there will be difficult to do this.
Try the code below to test if I'm wrong:
Scenario 1: orientation horizontal = the text 1 is not big enough
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="1dp"
android:orientation="horizontal" >
<TextView
android:id="#+id/textLong"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:ellipsize="end"
android:singleLine="true"
android:textColor="#00a2ff"
android:textSize="18sp"
android:text="This is a normal text not big" />
<TextView
android:id="#+id/textShort"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:singleLine="true"
android:textColor="#00a2ff"
android:textSize="18sp"
android:text="short text" />
</LinearLayout>
Scenario 2: orientation vertical = the text 1 is too big
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="1dp"
android:orientation="vertical" >
<TextView
android:id="#+id/textLong"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:ellipsize="end"
android:singleLine="true"
android:textColor="#00a2ff"
android:textSize="18sp"
android:text="This is a biiiggg loooonnng teeeeexxxxxtttt" />
<TextView
android:id="#+id/textShort"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:singleLine="true"
android:textColor="#00a2ff"
android:textSize="18sp"
android:text="short text" />
</LinearLayout>
To resolved your issue, you can try 2 solutions.
First, try to create a maxLenght limit, which calculate in your Activity and change the parent orientation of the LinearLayout. Get the number of chars that you have and display the orientation as well.
Second, customise your own class extend TextView. And create a getWidth method which return the width of the long TextView in comparison to it parent and change the orientation.
Maybe the following questions/answers could be useful (I think there are not solutions but more as inspiration):
In Android how to get the width of the Textview which is set to Wrap_Content
Get the size of a text in TextView
How to find android TextView number of characters per line?
Auto Scale TextView Text to Fit within Bounds
EDIT:
I found a solution with the last url that I writed above. See this answer where the dev wanted to make the same as you. So he decided to create a autoresizable textview. Take a look here: Move two side by side textviews to be one under another if text is too long
I hope this will help you.
May I suggest to use combination of LinearLayout and a little bit of coding. The idea is to have them side by side regardless of the size. and after the right textview is measured and laid out, set the max width of the left textview to whatever space left.
Here is the layout file, nothing special here:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="#+id/ns_in_txt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:ellipsize="end"
android:gravity="top|left"
android:maxLines="1"
android:singleLine="true"
android:textColor="#00a2ff"
android:textSize="18sp" />
<TextView
android:id="#+id/ns_txt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:ellipsize="none"
android:gravity="top|left"
android:maxLines="1"
android:singleLine="true"
android:textColor="#00a2ff"
android:textSize="18sp" />
</LinearLayout>
and add some codes to the activity/fragment:
final TextView tvLeft = (TextView) findViewById(R.id.ns_txt);
final TextView tvRight = (TextView) findViewById(R.id.ns_in_txt);
ViewTreeObserver obs = tvRight.getViewTreeObserver();
obs.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
tvLeft.setMaxWidth(SCREEN_WIDTH - tvRight.getWidth());
}
});
I've a problem centering a text in an already centered TextView:
That's the layout:
<RelativeLayout>...
<ImageView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:src="#drawable/w0"
android:layout_margin="10dip"
android:background="#color/green1"
/>
<TextView
android:id="#+id/temperature"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignBottom="#id/image"
android:layout_alignTop="#id/image"
android:layout_toRightOf="#id/image"
android:text="15º"
android:textSize="60dip"
style="bold"
android:textColor="#color/blue"
android:gravity="center"
android:layout_marginLeft="7dip"
android:background="#color/green1"
/>
<TextView
android:id="#+id/min_temperature"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#id/temperature"
android:layout_toRightOf="#id/temperature"
android:text="M 21º"
android:textSize="20dip"
style="bold"
android:textColor="#color/blue"
android:layout_marginLeft="5dip"
android:background="#color/orange1"
/>
<TextView
android:id="#+id/max_temperature"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#id/temperature"
android:layout_toRightOf="#id/temperature"
android:text="m 10º"
android:textSize="20dip"
style="bold"
android:textColor="#color/blue"
android:layout_marginLeft="5dip"
android:background="#color/orange2"
/>
And that's the displayed layout image:
What I don't understand is why the 15º isn't centered in the TextView.
The problem is due the TextView's forced center using alignTop and alignBottom but I can't see why it doesn't works.
I know I can solve this using some nesting layouts but I prefer to get a solution using only the RelativeLayout or if it isn't possible understand the reason.
Also is there a solution to align the maximum and minimum TextViews with the top and bottom of the 15º text (not the TextView) as there is now.
Also is there a solution to align the maximum and minimum TextViews with the top and bottom of the 15º text (not the TextView) as there is now.
I don't think so. You can only make things relative to the actual box that the View represents. And in the case of TextView the box is larger than the Text. Any relations that you do make are going to use the position of the Box no matter where the text is at or what it looks like.
Try using
android:layout_centerVertical="true"
on your temperature TextView in addition to the gravity you have now.
I always seem to have the biggest issues with aligning a text on a layout. Seems like the TextView doesn't measure its text properly. The reported TextView width and height are a lot bigger than the actual text. One would expect the TextView width and height to be tightly wrapped around the text.
The image below shows how the number 18 and the text "SEC" are not aligning on the same bottom baseline. This is due to the larger text height being a lot bigger than the text is. My xml layout can be seen below.
How to achieve better text alignment accuracy?
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#drawable/scan_block_1_bg" >
<LinearLayout
android:id="#+id/staticCountDown"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:id="#+id/tvStaticScanning"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:shadowColor="#ffffff"
android:shadowDy="1.0"
android:shadowRadius="0.01"
android:text="SCANNING"
android:textColor="#878787"
android:textSize="20sp" />
<TextView
android:id="#+id/tvCountDown"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:shadowColor="#66000000"
android:shadowDy="-1.0"
android:shadowRadius="0.01"
android:text="03"
android:textColor="#b6b6b6"
android:textSize="81sp" />
</LinearLayout>
<TextView
android:id="#+id/tvStaticSeconds"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#id/staticCountDown"
android:layout_toRightOf="#id/staticCountDown"
android:gravity="left"
android:shadowColor="#ffffff"
android:shadowDy="1.0"
android:shadowRadius="0.01"
android:text="SEC"
android:textColor="#878787"
android:textSize="12sp" />
</RelativeLayout>
//use this attribute in your TextView
android:layout_alignBaseline="#id/staticCountDown"
and android:layout_marginBottom="-10dp"
As strange as it may sound if you look at the screen shot provided Both the textviews have the same bottom base alignment. Try putting letters "gj" in tv countdown. You can actually see both will come to have same bottom base alignment. Its better go with padma Kumar's answer.
I'm having real difficulty coming up with a layout which works. I have a view which fills the width of the screen. It contains three sub-views:
Some text
A number in parentheses after the main text
A button
The button is right-aligned, and the text items are left-aligned one after the other, as shown:
| Some heading text (n) [button] |
The problem is controlling what happens when the text is too long. I want it like this, so that the number is always visible just to the right of the main text. The main text should be truncated if needed so the other two views remain visible.
| Some very very long headin... (n) [button] |
The closest I've got which succesfully truncates the main text results in the (n) always being right-aligned next to the button even when the main text is short enough to fit. That's not what I want.
How would you approach this?
I'm not posting any of my current XML yet, lest it prejudice anyone's suggestions.
I do not believe there's any xml layout for that. My guess is that you will need to extend TextView and measure the text length inside onDraw(...), adjusting the text accordingly through some iteration (i.e., removing one character at a time until the text fits the canvas)
I just found another question that is quite similar to yours: Ellipsize only a section in a TextView . No other answer than ellipsize in the middle.
Another thoughts:
I'm wondering if it would work to have one textview with the main text (ellipsize left, wrap_content) and another with the number in the parenthesis (wrap_content), both inside an horizontal linear layout. That layout would be inside a relative layout and layout_toLeftOf the button, which would be wrap_content, layout_alignParentRight.
Does it make any sense? I don't have Eclipse now to test it myself. Not sure if the (n) textview would be lost behind the button or not with a long text.
Alternatively (and less interesting), you can setup one single relative layout with the two textviews all layout_toRightOf and the button aligned to the right (layout_alignParentRight) and set the max witdth ot the first textview (android:maxWidth). You would need to set up different layouts for different screens, though.
An example with a fixed max width that will work as required:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="click me"
android:id="#+id/bt1"
android:layout_alignParentRight="true"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="short text"
android:lines="1"
android:ellipsize="end"
android:id="#+id/t1"
android:layout_alignParentLeft="true"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="(n)"
android:lines="1"
android:id="#+id/n1"
android:layout_toRightOf="#id/t1"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="click me"
android:id="#+id/bt2"
android:layout_below="#id/bt1"
android:layout_alignParentRight="true"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="very long text that will not fit in any layout, regardless of the size of the screen"
android:lines="1"
android:ellipsize="end"
android:id="#+id/t2"
android:layout_below="#id/bt1"
android:layout_alignParentLeft="true"
android:maxWidth="220dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="(n)"
android:lines="1"
android:id="#+id/n2"
android:layout_below="#id/bt1"
android:layout_toRightOf="#id/t2"
/>
</RelativeLayout>
Try a linearlayout, set the weight of the text view as 1,, and set ellipsis as TruncateAt.MIDDLE. Check this layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="wrap_content">
<TextView android:id="#+id/text" android:layout_width="0dp"
android:layout_height="wrap_content" android:lines="1"
android:ellipsize="middle" android:gravity="left"
android:layout_weight="1" />
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
The key is the ordering of the items as this is the order they are measured, in order to ensure your button and (n) text get enough space in the overall layout:
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
>
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
/>
<TextView
android:id="#+id/middle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left"
android:layout_toLeftOf="#id/button"
android:text="(n)"
/>
<TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="#id/middle"
android:layout_alignParentLeft="true"
android:gravity="left"
android:ellipsize="end"
android:text="Some really long to text to make this flow over"
android:lines="1"
android:maxLines="1"
/>
</RelativeLayout>