I'm trying to create an EditText that has the following background images (aligned right) when a user inputs valid/invalid text:
How can I achieve this in Android? I've tried setting the background image using:
editText.setBackgroundResource(R.id.icon_tick), but when I do this, the whole image gets stretched to fit the EditText.
editText.setCompoundDrawables(left, top, right, bottom) where left, top, right and bottom are either drawables or null.
Why does it have to be a background image? Just make it a standard image and position it accordingly in your layout. Otherwise, you'll need to make a large image that actually takes up the entire background of your view (with your icons positioned where you want them). You'll also need to size this image accordingly for the various screen resolutions.
An alternative approach can also be found here:
Background Image Placement
Possible duplicate post.
You can make the drawable as nine patch image. Have some transparent area to the left of the tick mark and define it as stretchable area. That should do the trick.
Related
How would I replicate this in Android, my general instinct would be to create a regular layout w/ a border, then have 2 layouts that contain a triangle (one the same color as the border + one that's slightly smaller but white and overlap the two), idk if there's an easier way to do that:
You can use 9patch to achieve something like you wanted.
The Draw 9-patch tool is a WYSIWYG editor that allows you to create
bitmap images that automatically resize to accommodate the contents of
the view and the size of the screen. Selected parts of the image are
scaled horizontally or vertically based indicators drawn within the
image.
A complete guideline can be found here : http://developer.android.com/tools/help/draw9patch.html
The easiest way to reach this, is to set the layout background to that image.
background="#drawable/template"
Probably you want to have the area out of the "bubble" transparent, so you will need to save it as PNG.
I need to get a border on the base of my android text view, it should look something like the count down -1:29 timer. I know I can create a image and put it on the background, but I need it to be a layout xml kinda thingy so that it adjusts with size of the text within for all phones.
Use a 9-patch image that can stretch horizontal and place it as a background. That is all you need.
At last i finished my work and now i need to hand it to designer. App has some buttons and checkboxes.
So the question how big button and checkbox should she draw for each screen size(ldpi,mdpi,hdpi,xhdpi) or she could draw just one image for button and anotherone for checbox and it could be scaled?
Thank you already.
It really depends on how big your buttons are. U can check the following link for sizes:
http://developer.android.com/images/screens_support/screens-densities.png
But I agree with Mikelsreal (create a 9 patch image).
Create the button image in whatever size u like.
Add black pixels above the image to set where the image should be stretch horizontal.
Add black pixels on the left side of the image to set where the image should be stretch vertical.
Add black pixels on the right side where the content can be placed vertical
Add black pixels below the image to set where the content can be placen horizontal
rename the image like : yourImageName.9.png
and it should work.
for more info check (developer.android.com/tools/help/draw9patch.html)
I have a few issues and questions regarding some UI development on Android. Firstly look at this image:
Firstly at image A) This is a image that I insert and repeat horizontally to give the zig-zag shape at the top of the screen regardless of screensize and above that a textField with no content and a background color - But as I'm sure you can is that the two colors don't match up quite as perfectly as it should even though they both have the same hex color value (#BF0426). And secondly, you can also see some serious pixelation on that zig-zag image. How do I fix these 2 problems?
And then at image B) Here I have a simple listView. What I would like to do, is firstly indent it a bit on both sides, and round the corners of the top and bottom item. So basically I want it to look like the blue border drawn on the screenshot. (Your typical iOS listView). How do I go about doing this?
Thanks in advance for any tips!
For the image. Just out of curiosity, why wouldnt you simply extend your image to include the top pixels as well? In other words, build your repeating image such that it incorporates the pixels that you are trying to create using the empty textview. This will at least take care of the color missmatch, as the color will all be generated from the same place. In terms of the pixelation. Are you truly repeating the image, or are you spreading the image. A spreading will definitely cause what you are seeing.
For your tableview:
For the left and right indent, you can simply use the margin or padding attributes of tableview item. There are generic padding and/or margin attributes (which will pad all of the top, bottom, left and right), or there are separate padding and/or margin attributes for each top, bottom, left, and right. Here is a great link on padding versus margin that you may want to read.
Difference between a View's Padding and Margin
Example attribute (as called in an XML file) for bottom margin
android:layout_marginBottom
setMargins(left, top, right, bottom) // for setting margins programmatically
Example attribute (as called in an XML file) for top padding
android:paddingTop
setPadding(left, top, right, bottom) // for setting padding programmatically
For the custom top and bottom, you should be able to use the following tutorial
http://www.softwarepassion.com/android-series-custom-listview-items-and-adapters/
From here, you should be able to detect the item as the first and last item and set the background property (image) to a background image that has a rounded top or rounded bottom. This is how I do it on the iPhone. I have also implemented things that LOOK like tableviews but are simply vertical layouts with my own custom views that I have made to look like what you are wanting.
One thing to consider is the file format you use is going to mutate the image as you save it (lossy compression), so a .jpg with a certain color may look different than a .bmp with the same color. Make sure you author using the same application and/or export settings when trying to match up images.
Also, if you created your image with a DPI that is not compatible with the android display it can cause serious pixelation in detail areas, especially with gradients and drop shadows.
I am trying to create a stretchable scroll handle for my app.
The first image is the scrollhandle.9.png that I include in my app's resources.
The second image shows what this 9patch image looks like when used in my app.
Any advice on how to accomplish a stretchable scroll handle?
Edit: With help from posters, I was able to get an image that works. I added it below to help those who may find this in the future.
The area covered by the top and the left black line(dots) will be used while scaling your image. This area will be highlighted to you when you click the "show patch" option. You can see how the image scales by using the "Patch scale" option given in the draw9patch tool.
The area covered by the right and bottom lines(dots) will hold the content for the background.
Eg: You can define boundaries for the text inside 9 patch image for editor background. For your case you don't need right and bottom lines.
So for your case place two dots at the top corner and two dots at the left corner. Make sure patches doesn't fall in the arrow image of the scroll(if they do fall your arrow image will also get stretched) . Try putting the dots only in the left and top lines till you get the desired preview with "Patch scale" option.
If you use only one dot (instead of four) at the top and bottom left, and one at image top center, it should stretch the way you want it to.