I'm having problems in Android Studio. I can't see device screen in activity_main.xml and fragment_main.xml, but as well I see it in content_main.xml. Also, I can't add any elements to screen.
In the preview pane of right side try changing your API level to some lower or higher API it will most probably solve your issue.
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An Android App development beginner here. I created a simple app which converts KMs to Miles and vice versa. Issue seems to be with the interface. The interface for activity_main.xml is as below:
Interface on Android Studio compiler
But once I emulate it on an Nexus 6 API 29 emulator, it looks weird and doesn't work properly. Tried it on a Nexus 5 emulator as well, same issue. Here's a screenshot:
Nexus 6 API 29 Emulator
Moreover, when I tried installing the apk file on my Samsung Note 8, it doesn't install, even after changing the settings and allowing unknown apps to be installed. Please help.
Judging from first screenshot (red alert icons in "Component Tree" window) the issue is the fact that You did't constrained Your Views.
When using ConstraintLayout You can't just 'place' views in editor, they need to be constrained to something in order to be displayed in desired place.
For example: Your button with text "Convert miles to kms" should be constrained as follows:
left to parent left
right to parent right
top to EditText above it or to TextView "KMs".
But other views need to also be constrained to get desired behavior.
You can read about ConstraintLayout and how to use it in this tutorial from official documentation: https://developer.android.com/training/constraint-layout
I've seen some Layout Editors in Android Studio with a ruler on top and on the side for the Preview window and I'm trying to figure it out how to enable, any ideas? I'm using Android Studio 3.0.1 and I can't see them.
Seems like the ruler has been removed from the Preview tab of the Layout Inspector since Android Studio 3.0. It's 2020 now and Android Studio 4.0 has a new Layout Validation tool to preview the layout on different devices and display configurations. Not really the same but at least the Layout Inspector seems much more reliable than those days.
More details at: https://developer.android.com/studio/debug/layout-inspector#layout-validation
The Guidelines are the rulers. You move them around to get the measurements you need. Expressed in percentages or units.
I'm wondering why in every tutorial I watch the preview section looks like this: i.e it has the actual device shown as preview and has a button for linking it to an activity
When mine looks like this: for some reason doesn't have the device
I'm sure I've just not installed something correctly or not clicked a checkbox, or a version of something is wrong but after some googling i can't seem to work out what it is. Any help would be greatly appreciated.
Newer versions of Android Studio do not show the device bezel by default. Everything looks installed correctly.
Look at the Android Studio window title.
Your video is using 2.0 Beta, and your newer version just doesn't have the bezel.
You'll also notice there's different buttons around the screen preview area.
You could disable it in older versions, I'm not sure if it's completely gone but it was probably removed because it took up screen space and didn't serve much purpose
I just installed Eclipse/ADT on one of my other computers, and everything is fine, except for the graphical layout editor. For some reason, the graphical layout component previews are not showing up like they normally do, just text.
I have it set to show previews, however, I am only seeing text and this is very odd.
Anyone know why this is?
Picture for reference:
It's because of API Level 19, Android 4.4.x KitKat doesn't support Show Previews in Eclipse ADT.
Try changing API Level to below 19.
Hi I was using Google API level 7 for my App.
I coded all layouts in dip unit. Now I installed Google API 8, changed my project to use level 8.
But, after launching the App, getting modified view. For e.g- the length increased for a list-view. Also, service call is not working. Restarting eclipse didn't solve the issue.
Then again switched back to Google API 7, now the service calls working fine. But, having layout issues like- font-size got bigger and list-view having increased height.
so, is there anything am missing? or why the layout is changing in different API Level! I don't have a device; will all the element measurements change in device?
which layout are you use? if linear layout then no problem because when you check it on device it will get in proper manner.now you got problem of size of emulator so click on avd > click on avd item(Google api 8) > click edit button > set built in : HVGA >edit AVD > then run
dont worry check it in device it will get properly.