I am new to Android, and wish to do a layout as below:
A Logo on top.
Following with a Rectangle with Rounded corners
Within that Rectangle, I will have two EditText box for User ID and Password, plus one Login button
Below the Rectangle with Rounded corners (outside) I have a Html Link to Terms & Conditions
I have tried various ways of layout out
Using only layout. Different kinds of layouts. All seems to be very difficult to achieve what I need
Using Layout + Background. The background is not really a background, but is more like a template, it will affect your layout, and is very difficult to control where you wants your control located.
Using onDraw. Flexible but worried that it might have problem with different screen sizes.
So, someone please enlight which is the best way to achieve what I need?
No one can really tell you what is best, it depends on exactly what you want but I would suggest using a RelatvieLayout as they are typically the easiest and most efficient to use once you work with them a little, in my opinion. You can read Here to see how to do the rectangle. You basically will use shape drawable and adjust the radius of the corners.
As far as the logo on top, if it will be reused in other Activitys then you can put it in its own layout and use the include tag in your layouts to reuse the logo layout
If you are worried about different screen sizes then read the Docs and find what works for you.
Just start on it and adjust as you go. Don't be afraid to screw up and redo some of it. Hopefully this is enough information to get you started
Using a RelativeLayout will give you more flexibility and allow you to use less Layouts such as nested LinearLayouts and Layouts with only one child which can improve performance
this is how it should be done:
start with linear layout with vertical orientation :
<linearLayourt xmlns=............
android:orientation="vertical"
.....other stuffs goes here
......
.....
<LinearLayout ......this is the child linearlayout
.....other stuffs goes here like width and height
<ImageView ...this is where you are gonna put your logo in
/>
</LinearLayout> ....close your child linear layout
<RelativeLayout ...
.........other stuffs here
<EditText ....1st edit text
...you position your boxes here
/>
<EditText ....2nd edit text
...you position your boxes here
/>
</RelativeLayout>
<TextView
....
...
...put yout hyperlink for this text
/>
</LinearLayout> ...this is the parent linear layout
For your case of creating a Log in screen it's not really matter as it is a relatively easy screen to design. I personally like to use XML to design my layouts and never seen it done using the onDraw method.
My suggestion to you as #codeMagic said is to learn how to use and manipulated RelativeLayouts,as those will prevent you from creating cascaded layouts that are really not recommended and take long time to load.
When I started to program for Android I found LinearLayout to be the easiest to understand and use but using it would bring me to many LinearLayouts inside of a LinearLayouts on complex screen designz, later with the use of RelativeLayout I realized that in most cases one RelativeLayout can replace many cascaded Linear ones.
in your case you could do some thing like that:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:src="#drawable/drop_down_icon" />
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/imageView1" >
</EditText>
<EditText
android:id="#+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/editText1" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/editText2"
android:layout_centerHorizontal="true"
android:text="Button" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/button1"
android:layout_centerHorizontal="true"
android:text="TextView" />
</RelativeLayout>
All what left is to add the desired padings and margins.
Related
I am trying to do some simple app to practice, and the user interface gets broken for some reason I don't know why when I run test on my phone. I did an app on android only once before and I didn't have this problem, I was using a different phone though. I'm testing this on Samsung Galaxy A5.
That's how it looks in project: http://imgur.com/Pnbg5ns
And that's how it looks on my phone: http://imgur.com/a/uki84
Anyone knows how to resolve this?
All your views have locations set with the tools:... attribute. The locations set this way (using tools:) position the views within the Android Studio editor, and Android Studio editor only. It doesn't do anything at all to position the views for when the app is actually run, that's why all your views are on top of each other, they simply don't have any attributes to indicate their positioning on the screen when the app is run.
You should check tutorials for how to use ConstraintLayout (if you want to use that layout) which is a recent (2016) addition to Android and position your views with the constraints you need. Or you could use some of the older layouts like LinearLayout which should be perfectly fine for your layout needs.
And absolute positioning of the views like you have with the use of the tools:... attribute is also a big no most of the time. Views need to be positioned in some relative way within a layout, which doesn't mean it has to be within a RelativeLayout :), just saying that the views should be positioned in reference to the layout containing them, not just at some absolute point f.e. (150, 110).
This is a very simple layout. You can use LinearLayout instead of ConstraintLayout.
Here is an example using LinearLayout:
<?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="match_parent"
android:orientation="vertical"
android:layout_margin="16dp">
<EditText
android:id="#+id/etLogin"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="Login"
android:inputType="textPersonName" />
<EditText
android:id="#+id/etPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="Hasło"
android:inputType="textPassword" />
<Button
android:id="#+id/bLogin"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Loguj"
android:layout_gravity="center_horizontal"/>
<TextView
android:id="#+id/tvRegister"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Nie masz jeszcze konta? Kliknij tutaj."
android:layout_gravity="center_horizontal"/>
</LinearLayout>
OUTPUT:
Hope this will help~
Let me show you two links to demonstrate my point:
http://i.snag.gy/QP1i2.jpg (The ListView is 60 pixels)
http://i.snag.gy/DvXsL.jpg (The ListView is 61 pixels)
The whole file is done with an outer Vertical LinearLayout to provide weighted percentages (e.g. the ListView is 75%, the search part is 4%, so on and so forth) independent of device screen size. Within that outer LinearLayout I have a nested Layout (Linear or Relative) depending on my needs for the particular row.
It works beautifully, except for the last part. And it seems a lot of the items I try adding end up messing the formatting so I'm not sure if the problem is how I'm doing the ListView. Anyways, here's the relevant code:
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="0dip"
android:background="#null"
android:layout_weight="0.75"
android:paddingLeft="0dip" >
<ImageView
android:id="#+id/searchdivider"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="2dp"
android:contentDescription="#string/desc"
android:src="#drawable/searchdivider" />
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_alignParentLeft="true"
android:layout_below="#+id/searchdivider" >
</ListView>
</RelativeLayout>
Thank you for your help!
EDIT: I should add that I don't want the height to be 60dp, obviously. I want it to fill_parent; however I picked the arbitrary value of 60 and 61 to figure out exactly what change makes the layout mess up.
2nd EDIT: I think I figured out the problem. It seems when I make the Theme AppCompat, it looks and acts fine. But when I make the Theme NoTitleBar (with or without fullscreen) then it acts all screwy. I haven't changed it in the manifest but rather the place in the graphical layout that lets you modify it for that one activity only.
Any suggestions?
android:gravity="left" on imageView and android:gravity="right" on the other listView
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 am a new one in Android so please sorry for stupidity.
Well my problem is in multiple layers -
I would like to combine two transparent ImageViews one above the other. This is similar to photoshops layers, what is the sample layers activity in android?
You can use a RelativeLayout for this.
The property android:layout_centerInParent If true, centers the child horizontally and vertically within its parent. [boolean]
Similarly there are properties like ,
android:layout_alignParentLeft,
android:layout_alignParentRight,
android:layout_alignParentTop,
android:layout_alignParentBottom.
Try these.
Already answered Overlapping Views in Android ? That should be all you need, using RelativeLayout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/layout"
>
<ImageView android:id="#+id/imageview1"
android:background="#00000000"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="#drawable/image1"
/>
<ImageView android:id="#+id/imageview2"
android:background="#00000000"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="#drawable/image2"
/>
</RelativeLayout>
would be an example code for you.
you can use the layer-list， for a full investigation, please refer to http://developer.android.com/guide/topics/resources/drawable-resource.html#LayerList
Well its quite possible to do in android, but the thing is what actually you are going to do with that. you can give the same positions for both the images in layout now both will be overlapped and based on your condition or situation you can show and hide one another programatically. In the same way you can give multiple images overlapped on one another. Hope this will help you out to understand :)
In my Android app, I have a tabbed Activity. In one of the tabs I have two TextViews and two EditTexts.
The first EditText is only one line, and that's fine. However, I want the other EditText, android:id="#+id/paste_code", to take up the remaining space, but no matter what I do to it, it will only show one line. I don't want to manually set the number of lines, since the number that would fit on the screen differs based on your device.
Here's the relevant code. It's nested inside all the necessary components for a tabbed Activity.
<ScrollView
android:id="#+id/basicTab"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Paste title"
android:layout_weight="0" />
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="#string/paste_title_hint"
android:id="#+id/paste_title"
android:lines="1"
android:gravity="top|left"
android:layout_weight="0" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Paste text"
android:layout_weight="0" />
<EditText
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:hint="#string/paste_hint"
android:id="#+id/paste_code"
android:gravity="top|left"
android:layout_weight="1" />
</LinearLayout>
</ScrollView>
Since the accepted answer doesn't address the situation fully, here's a proper fix for people coming to this while searching:
Firstly, Romain Guy from the Android dev team addresses this well in this blog post:
http://www.curious-creature.org/2010/08/15/scrollviews-handy-trick/
Essentially, your ScrollView needs to contain the android:fillViewport="true" attribute.
If things aren't working once you've done that, here are a couple of things to check:
The layout inside the ScrollView (such as a LinearLayout) needs to have layout_height="wrap_content"
The view(s) you want to expand should have layout_height="wrap_content"
The view(s) you want to expand should have layout_weight="1.0" or similar
Don't forget to set minLines="3" or similar in the view(s) you want to expand if you don't want it/them to shrink too much.
The problem seems to come from your use of ScrollView. I've tested your code using a ScrollView as the parent container, and got the same problem. However if I replaced the ScrollView with a LinearLayout, then the second EditText properly expanded to fill the whole screen. The problem must be that ScrollViews are designed to wrap to their smallest possible size, regardless of what settings you put in android:layout_height. I experimented with another few layouts, e.g. a RelativeLayout using layout_above and layout_below, but those only affected its maximum size, not its size when empty. Unfortunately, that means I'm not sure how to solve your problem... Is there a way you can redesign your layout to use something other than the ScrollView as the parent container?