I am trying to design the layout of my Android project, but I must have done something wrong. Now when I try to drag the text boxes around, they just would not move on the screen. I am guessing it is one of the format setting, but not sure which one it is.
This is the XML file of how it looks:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.oldimagerevieal.MainActivity"
tools:ignore="MergeRootFrame" >
<TextView
android:id="#+id/textLat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/textLong"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
</FrameLayout>
FrameLayouts use gravity to position items on a screen using the
android:layout_gravity="left|top" //whatever you want.
Unless you need the FrameLayout, you can change the root element to a RelativeLayout or LinearLayout (don't forget to specify orientation), and you should be able to drag things around like normal.
I would high recommend getting familiar with building views in XML. It will significantly help you.
Enable "Autoconnection to parent" by clicking on the magnet button in the design tools section.
Related
So Android Studio has the drag/drop feature in the design tab. I am able to place the elements where I want them, and the layout looks great on the screen.
However, when I go to run the app emulator, it looks completely different. Everything gets shoved up to the top-left hand corner of the screen, nowhere near where I placed it in design mode.
Is there a way to have your elements show the same way in the emulator, as the way you place them in design mode? Right now I'm having to go back and edit all the code each time.
I have my code below, as well as a image link below to further clarify my point.Comparison of Design mode vs App Emulator
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.luke.currencyconverter.MainActivity">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Enter The Amount in Dollars"
tools:layout_editor_absoluteX="-159dp"
tools:layout_editor_absoluteY="126dp" />
<TextView
android:id="#+id/textView2"
android:layout_width="403dp"
android:layout_height="0dp"
android:text="Enter The Amount in Dollars:"
android:textColor="#android:color/black"
android:textSize="22sp"
tools:layout_editor_absoluteX="33dp"
tools:layout_editor_absoluteY="365dp" />
<ImageView
android:id="#+id/currency"
android:layout_width="361dp"
android:layout_height="450dp"
app:srcCompat="#drawable/currency"
tools:layout_editor_absoluteX="12dp"
tools:layout_editor_absoluteY="-117dp" />
<Button
android:id="#+id/convert"
android:layout_width="361dp"
android:layout_height="wrap_content"
android:onClick="convert"
android:text="Convert"
tools:layout_editor_absoluteX="12dp"
tools:layout_editor_absoluteY="462dp" />
<EditText
android:id="#+id/dollarField"
android:layout_width="368dp"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="numberDecimal"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="408dp" />
</android.support.constraint.ConstraintLayout>
Drag and drop for android will only place the object within the screen. To keep it there you should modify the xml so that the objects will be constrained to each other.
You can use either relative layout or constraint layout for an easier time in designing your layout.
I figured it out. I was using "constraint layout", and I needed to use "relative layout".
I just had this error as well and as annoying as it sounds, my solution was to delete my xml file and recreate it.
I'm new to Eclipse and Android and I need to align controls to each other.
In Visual Studio, I can easily align controls and distribute spaces between them. How can I do this in Eclipse?
I got this xml. Just dragged and dropped them to layout. There must be an easy way to align and disstribute. Especially distrubute.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.example.sbs.MainActivity" >
<!-- Ders adları -->
<TextView
android:id="#+id/lblTurkce"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="42dp"
android:layout_marginTop="78dp"
android:text="#string/Turkce" />
<TextView
android:id="#+id/lblDil"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/lblTarih"
android:layout_alignParentBottom="true"
android:layout_marginBottom="166dp"
android:text="#string/ingilizce" />
<TextView
android:id="#+id/lblMatematik"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/lblTurkce"
android:layout_below="#+id/lblTurkce"
android:layout_marginTop="15dp"
android:text="#string/Matematik" />
<TextView
android:id="#+id/lblFen"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/lblMatematik"
android:layout_below="#+id/lblMatematik"
android:layout_marginTop="18dp"
android:text="#string/FenveTeknoloji" />
<TextView
android:id="#+id/lblTarih"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/lblFen"
android:layout_below="#+id/lblFen"
android:layout_marginTop="24dp"
android:text="#string/tarih" />
<TextView
android:id="#+id/lblDin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/lblTarih"
android:layout_centerVertical="true"
android:text="#string/din" />
So, this is what a friend did and than I started doing too and I can align stuff pretty well.
So ,what you have to do ,is to work with LinearLayouts and their property Orientation property.
Now I don't exactly know what you want to do but I can give you a little example so that you ,hopefully understand what I am writing here.
Let's say you got 3 TextViews and you want to arrange them like two on top of the screen and the last one, you want to be below the two already aligned button.It would look pretty much like a pyramid but with the top being pointed down.
You would do this like that: The first two textViews will be put in a LinearLayout with the Orientation being set to Horizontal (so that the second textView will be in the right of the first textView but on the same line (so aligned to the first textView's right).
Now, the other one won't be necessary to be contained by a LinearLayout ,BUT, the first LinearLayout (with the first and second TextView) and the third textView have to be contained by a LinearLayout that has the Orientation being Vertical.This way the third textView is below the LinearLayout containing the two textViews.
Let me know if you need more explication.
RelativeLayout provides various alignment attributes you can use. For example, if you want to line up the left edges of two different TextViews in your RelativeLayout, you can use the layout_alignLeft attribute like so:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textViewOne"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:text="Text One"/>
<TextView
android:id="#+id/textViewTwo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/textViewOne"
android:layout_alignLeft="#id/textViewOne"
android:text="Text Two"/>
</RelativeLayout>
Note that I forced the first TextView to have a left margin and that the second TextView correctly left aligns to the first. If you take the layout_alignLeft attribute off of the second TextView, it will align to the parent's left edge instead.
I am new to android programming and am trying to understand the android architecture and how are applications built around it.
So there is no real world need for this as of now. Its just some experimentation that I am doing to learn the stuff. What I want here is 3 different views, TextView, EditText and Button, horizontally next to each other. To achieve this here's the activity_main.xml that I am using : -
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hello_world" />
<EditText android:id="#+id/edit_message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/edit_message" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/text_to_appear_on_button" />
</LinearLayout>
On running the MainActivity.java, that has setContentView(R.layout.activity_main);, in the onCreate(), I get the TextView and the EditText widgets on the screen, horizontally next to one another, but not the Button. I wonder why ?
And strangely I have observed that the last element inside
<LinearLayout>..</LinearLayout>
is the one that gets vanished from the screen. So if <Button .. /> is exchanged with say <TextView .. />then its the <TextView> element that will not be visible on the screen now.
Please explain what am I missing out here.
I am running the MainActivity.java on the emulator and am using Eclipse as my IDE, if this information helps further.
It depends on what you want to do. If you want three things horizontally in a LinearLayout, you will likely run out of space on the screen. To guarantee that all three fit, set:
android:layout_width="match_parent"
android:layout_weight="1"
For all 3. You can mess around with the weight as you see fit, but basically this will tell the rendering to fit all three objects on the screen horizontally, each one taking up 1/3 of the screen (if you change weight, it will be different values).
If using LinearLayout, you will probably nest multiple layouts, with a main vertical LinearLayout containing several horizontal ones. It is a valid approach, and is probably a matter of preference. LinearLayout allow for weights, which can be extremely useful because they are one way of guaranteeing things don't get cut off the screen.
RelativeLayout is another approach, wherein you specify where things on the screen are relative to each other (Left, Right, Above, Below). While these don't use weights, you can align elements with the edges of the screen and get the same effect.
As I said, the approach is largely a matter of preference, and usually some mesh of both works pretty well.
I recommend to you use relative layout for your xml ,If you use linear your widgets are assigned one by one,not your wish.its for your further developement
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="101dp"
android:layout_marginTop="50dp"
android:text="TextView" />
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/textView1"
android:layout_below="#+id/textView1"
android:layout_marginTop="67dp"
android:ems="10" >
<requestFocus />
</EditText>
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/editText1"
android:layout_below="#+id/editText1"
android:layout_marginTop="59dp"
android:text="Button" />
</RelativeLayout>
I'm a beginner in Android. I use Eclipse to program my app. When I create an .xml class and I want to set the specific position of a button, I use this code for example:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/fm"
android:baselineAligned="false"
android:gravity="end" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scrollX="100dp"
android:scrollY="30dp"
android:text="#string/edad" />
</RelativeLayout>
... but nothing happens. It sets the button in a corner. How can I get it to appear elsewhere?
you need to use
android:layout_marginRight
android:layout_marginLeft
android:layout_marginTop
android:layout_marginBottom
You need to use positioning parameters such as android:layout_below. See the Relative Layout Guide for details.
You should click the button and go property. That's where the diffrent positioning settings are located.
For example below :#+id/VIEW then set marin top : 10dip. This will set you button 10 dip below VIEW.
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="100dp"
android:layout_marginTop="30dp"
android:text="#string/edad" />
I am trying to achieve this in an android app layout.
So far I have managed to get the buttons the way I wish, but I am having trouble working out how I am going to implement the divider and the layout on the right side of it.
Here is what I have so far:
<?xml version="1.0" encoding="utf-8"?>
<!-- this is main activity's layout. a main menu of sorts. -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:gravity="center" android:background="#drawable/background">
<RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:id="#+id/layout_maintest2_relativelayoutleft">
<Button android:text="#string/string_main_NewCalculation" android:drawableLeft="#drawable/calculator5" android:onClick="onClickButton_NewCalculation" android:id="#+id/button_main_NewCalculation" android:layout_width="300px" android:layout_height="90px" android:drawablePadding="0px"></Button>
<Button android:text="#string/string_main_Help" android:drawableLeft="#drawable/question" android:onClick="onClickButton_Help" android:id="#+id/button_main_Help" android:layout_width="150px" android:layout_height="90px" android:drawablePadding="0px" android:layout_below="#id/button_main_NewCalculation"></Button>
<Button android:text="#string/string_main_Share" android:drawableLeft="#drawable/share" android:onClick="onClickButton_Share" android:id="#+id/button_main_Share" android:layout_width="150px" android:layout_height="90px" android:drawablePadding="0px" android:layout_below="#id/button_main_NewCalculation" android:layout_toRightOf="#id/button_main_Help"></Button>
</RelativeLayout>
<RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="#+id/layout_maintest2_relativelayoutright" android:layout_toRightOf="#id/layout_maintest2_relativelayoutleft" android:layout_alignTop="#id/layout_maintest2_relativelayoutleft">
<TextView android:layout_width="wrap_content" android:textSize="24px" android:textStyle="bold" android:layout_height="match_parent" android:id="#+id/textView_calculator_CalculatorTitle" android:text="#string/string_calculator_CalculatorTitle"></TextView>
</RelativeLayout>
</LinearLayout>
Its hard to tell from the image you uploaded but are you trying to keep the two relative layouts side by side?
You can try to position the layouts by declaring them to be drawn to one side of the parent or the other. I cant remember off the top of my head at the moment and I know thats a crappy answer but I think the answer is somewhere in here
http://developer.android.com/guide/topics/ui/layout-objects.html
Take a look at the android:layout_alignParentRight="true" declaration.
Im pretty sure I used something similar to position multiple views and buttons in the same parent before. Try it out and when I get back to my work computer on monday Ill look through my projects and see which one I know works the best.