Develop Reference

Button getting out of the screen android layout

I got this relativelayout and on the design screen of android studio looks good
enter image description here
<?xml version="1.0" encoding="utf-8"?>
<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:padding="8dp"
tools:context="com.checking.movi.movioperations.CartItems">
<TextView
android:id="#+id/txtcartprod"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Productos seleccionados:"
/>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recycler_cart"
android:layout_width="match_parent"
android:layout_height="649dp"
android:layout_below="#+id/txtcartprod"
/>
<Button
android:id="#+id/btn_placeorder"
style="?android:attr/buttonStyleSmall"
android:layout_below="#+id/recycler_cart"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/mybutton"
android:text="Continuar"
android:textColor="#ffffff" />
</RelativeLayout>
But when I test on the phone the button gets out of the screen if I decrease the size of the recyclerview it does appear can you guys give me a little help with this don't know to tell it to keep the 3 on the same screen

Giving width and height to views in dp's (or pixels) isn't the correct way. Because screen size isn't the same in all devices. Your design tab at Android Studio shows your layout in Pixel phone whose height is greater than your mobile phones. So, you can't see that button in your mobile phone.
I have added one line to your button and deleted another
Added this:
android:layout_alignParentBottom="true"
Deleted this:
android:layout_below="#+id/txtcartprod"
Changed height of RecyclerView to match_parent (to make it depend on screen size):
android:layout_height="match_parent"
And added this line:
android:layout_above= "#id/btn_placeorder"
Final version:
<?xml version="1.0" encoding="utf-8"?>
<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:padding="8dp"
tools:context="com.checking.movi.movioperations.CartItems">
<TextView
android:id="#+id/txtcartprod"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Productos seleccionados:"
/>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recycler_cart"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above= "#id/btn_placeorder"
android:layout_below="#+id/txtcartprod"
/>
<Button
android:id="#+id/btn_placeorder"
style="?android:attr/buttonStyleSmall"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/mybutton"
android:text="Continuar"
android:textColor="#ffffff" />
</RelativeLayout>
I hope you understood all the changes I made. If you have difficulty, feel free to ask in the comments.

Android, fit an image and textview into the screen

I added a fragment with an ImageView, which is a PNG image, and a TextView just below it.
The fragment is showing fine but when I rotate the screen the image will take most of the screen and the TextView is partially cut.
Here's the code:
<?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">
<ImageView
android:id="#+id/shopping_cart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="#drawable/shopping_cart" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_below="#id/shopping_cart"
android:text="#string/no_data"
android:gravity="center"/>
</RelativeLayout>
I'm trying to find a way to resize the image in order to show both image and text in the screen

try using a scroll-view as the root element if u want to retain the same image size rather than resizing the image. Here's a small snippet -
<ScrollView
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:fillViewport="true">
<RelativeLayout
android:id="#+id/container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
(all your view elements)
</RelativeLayout>

<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/text_image_container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
(Enter view here)
</LinearLayout>

Alright, so firstly ensure that you have the image for the ImageView in all densities. I would suggest that you use this attribute in your ImageView code:
https://developer.android.com/reference/android/widget/ImageView.ScaleType.html
The scale type defines how your image should scale according to the view. I faced a similar issue once, and i was able to solve it using this. Having said that, i have not seen the image you are using, so i cannot be very sure of it. But, i would say that you use:
android:scaleType="centerCrop"
you can find the definition of the attribute on the link provided above. Also, i do not know what devices you are targeting for your app, but its always good to keep views inside a scroll view so that they are visible even on a smaller screen.
Give it a try, if not by centerCrop, then maybe by some other attribute.
Cheers!!

Here is the code:
<?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"
android:gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/shopping_text"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="#string/no_data"/>
<ImageView
android:id="#+id/shopping_cart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#id/shopping_text"
android:src="#drawable/shopping_cart"/>
</RelativeLayout>

Android: Buttons Orientation for different screen sizes

I have problems with my buttons layout.
I made the "small, normal, large, xlarge" layout folders.
But still at some devices the buttons got mixed together !
When i view my layout using the devices set eclipse i can see the problem but i can't know what is the dimensions of the device.
My Question is: can anyone give me the dimensions of each one of these devices or who can i make a layout for each one?
the devices in the image blew
<?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"
android:background="#drawable/mainnati"
android:gravity="center_horizontal" >
>
<Button
android:id="#+id/b_info"
android:layout_width="220dp"
android:layout_height="50dp"
android:layout_centerVertical="true"
android:background="#drawable/info" />
<Button
android:id="#+id/b_pass"
android:layout_width="220dp"
android:layout_height="50dp"
android:layout_alignLeft="#+id/b_comp"
android:layout_below="#+id/b_comp"
android:layout_marginTop="350dp"
android:background="#drawable/pass" />
</RelativeLayout>

Two things: I see two Buttons.
The second is below and aligned to the left of one that doesn't exist in your code (b_comp).
So, I guess it should refer to b_info, instead.
And, instead of centerVertical, I'd set centerInParent (which also centers horizontally) for the first Button (b_info).
I'd use centerHorizontal for the lower Button, instead of alignLeft.
So, after all, my layout file would be:
<?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"
android:background="#drawable/mainnati"
android:gravity="center_horizontal" >
>
<Button
android:id="#+id/b_info"
android:layout_width="220dp"
android:layout_height="50dp"
android:layout_centerInParent="true"
android:background="#drawable/info" />
<Button
android:id="#+id/b_pass"
android:layout_width="220dp"
android:layout_height="50dp"
android:layout_centerHorizontal="true"
android:layout_below="#id/b_info"
android:background="#drawable/pass" />
</RelativeLayout>

Android Layout: cannot see the children over the parent

I have the Layouts as you can see in the picture (sorry I cannot post them normally yet):
https://dl.dropboxusercontent.com/u/28640502/Unbenannt.bmp
However, when I execute the app I can only see the camera preview and not the text nor the SeekBar. I know they work, because when I reduce the size of the camera I can see them and interact, but if I want the camera to be like background and then the children over it, it doesn't work.
I have been checking a lot of threads with similar problems but I don't find the solution:
1, 2, 3... Any idea? Thanks a lot!
Here is my xml code just in case:
<?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:layout_weight="0.55"
android:orientation="vertical" >
<FrameLayout
android:id="#+id/camera_preview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="fill">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="#+id/show_height"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5sp"
android:layout_marginRight="10sp"
android:layout_weight="0.12"
android:text="H" />
<SeekBar
android:id="#+id/select_height"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_margin="5sp"
android:layout_weight="0.91" />
<TextView
android:id="#+id/show_distance"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.06"
android:text="Dist" />
</LinearLayout>
</FrameLayout>
</LinearLayout>

try to input both of your layouts in relative layout for example
<LL>
<RL>
<FL>
</FL>
<LL>
</LL>
</RL>
</LL>
this is hapenning because of overlaiyng of LL by FL

You could use the bringToFront() method of the View class.
SeekBar seeker = (SeekBar)findViewById(R.id.select_height);
seeker.bringToFront();
Alernatively you could use the sendToBack() function to put a view behind other views.
Also remember that a view's z-index is determined by the order in which the view is declared in the xml layout file.
I'd also suggest changing the camera preview layout and it's first child layout to be siblings. The one added last in the xml file will be on top.

Show two frames in the same window

I want to design a layout like in this image
Frame 1 is gray and he Frame 2 is transparent. I think we need to use FrameLayout but I don't know exactly how to use it.

Indeed you could use a FrameLayout or a RelativeLayout(at least for the Frame 1) but you don't say what exactly do you want to do with those frames(this will change things a bit). I would use a RelativeLayout because I'm guessing you'll have content in frame 1 besides frame 2:
<RelativeLayout android:id="#+id/frame1" android:background="#c1c1c1"// other attributes>
<FrameLayout android:id="#+id/frame2" android:layout_centerInParent="true"
android:background="#android:color/transparent"// other attributes />
</RelativeLayout>

one way can be:
<?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"
android:background="#c0c0c0" >
<LinearLayout
android:layout_width="200dp"
android:layout_height="100dp"
android:layout_centerInParent="true"
android:background="#ffffff"
android:gravity="center" >
</LinearLayout>
</RelativeLayout>

You can not make the above like screen using two frames, because it is not possible to put one frame in to the another frame layout, so you can make it by using another way like, take one relative layout and put the frame inside it like,
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/relativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#color/black" >
<FrameLayout
android:id="#+id/frameLayout1"
android:layout_width="250dp"
android:layout_height="100dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="180dp"
android:background="#color/tbl_green">
</FrameLayout>
</RelativeLayout>
may be this can help you.