I created an empty activity for 'My Testing App' and it looks like the following in the preview section:
But when I generated a build apk and used the same in my cell phone the result was like the following:
I can only view the exit button on the very top left but the two other buttons, that should be above it are missing.
I tried to rearrange the icons on the screen as well. I made them to go to the bottom, to the right most, but I see no change when the apk is reinstalled.
How do I make them visible on the hardware?
Here is the snap of the code for this activity:
To quickly add constraints to your layout just click on the Infer Constraints button in the Layout Editor toolbar. Learn more about the feature here: https://developer.android.com/training/constraint-layout/index.html#use-autoconnect-and-infer-constraints
Right Click on you Layout and select "Convert View" Option.
then select "LinearLayout" Option.
it will show all three buttons in the output.
You have to learn about ConstrainLayout in Android
View in ConstrainLayout is not only drag and drop. You should link the constrain line in each view to reference with somewhere on the screen.
Any XML attributes prefixed with tools are removed when the app is compiled and are only rendered by Android Studio layout editor.
You need to properly set constraints in your ConstraintLayout, not use absolute positioning.
Or you may instead use RelativeLayout, LinearLayout, etc.
https://developer.android.com/training/constraint-layout/index.html
Start by reading this. Most of what you need is answered here. The problem is that your views are not properly constrained (basically they aren't linked to anything so when you run your app it doesn't know where to place them and just defaults to the upper left).
Related
Every time I create views like Button and TextView in ConstraintLayout, they all get stuck at the top corner instead of where I placed them.
I tried to create new activities and change the emulator, but the result is still the same.
This is a screenshot of what's happening:
What may be the issue?
As stated in Constraint Layout guides:
If a view has no constraints when you run your layout on a device, it is drawn at position [0,0] (the top-left corner).
You must add at least one horizontal and one vertical constraint for the view.
I guess you haven't applied any constraints.
Either manually apply constraints to the view, or let the layout editor do it for you using "Infer constraints" button:
When you drop a view into the Layout Editor, it stays where you leave it even if it has no constraints... this is only to make editing easier
In other words, the View will "stay where you leave it" until you add constraints.
The reason it looks different in the Preview vs your app is because anything in your XML with tools: is going to be removed from the code when your app runs. These options are only for the Android Studio layout editor, not representative of what you should expect to see when the code runs.
And it may be troublesome for beginners because
a missing constraint won't cause a compilation error
However
the Layout Editor indicates missing constraints as an error in the toolbar. To view the errors and other warnings, click Show Warnings and Errors (red button with number). To help you avoid missing constraints, the Layout Editor can automatically add constraints for you with the Autoconnect and infer constraints features
More details
A quick, easy way to fix this is to click on the component (TextView, ImageView, etc.) and click the infer constraints button. It looks like 2 yellow plus signs.
infer constraints image
add this in xml to the button etc
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.57"
then play with it in the design.
Good luck! :)
Basically this type of problem happens when you use ConstraintLayout .
So Go to Preview From Android Studio.
Select That button you want to set at the specific position
At last just click the infer constrains button as i mention in
the picture below on a red circle.
Thats All run the project and see magic
Thank you
Every time I create views like Button and TextView in ConstraintLayout, they all get stuck at the top corner instead of where I placed them.
I tried to create new activities and change the emulator, but the result is still the same.
This is a screenshot of what's happening:
What may be the issue?
As stated in Constraint Layout guides:
If a view has no constraints when you run your layout on a device, it is drawn at position [0,0] (the top-left corner).
You must add at least one horizontal and one vertical constraint for the view.
I guess you haven't applied any constraints.
Either manually apply constraints to the view, or let the layout editor do it for you using "Infer constraints" button:
When you drop a view into the Layout Editor, it stays where you leave it even if it has no constraints... this is only to make editing easier
In other words, the View will "stay where you leave it" until you add constraints.
The reason it looks different in the Preview vs your app is because anything in your XML with tools: is going to be removed from the code when your app runs. These options are only for the Android Studio layout editor, not representative of what you should expect to see when the code runs.
And it may be troublesome for beginners because
a missing constraint won't cause a compilation error
However
the Layout Editor indicates missing constraints as an error in the toolbar. To view the errors and other warnings, click Show Warnings and Errors (red button with number). To help you avoid missing constraints, the Layout Editor can automatically add constraints for you with the Autoconnect and infer constraints features
More details
A quick, easy way to fix this is to click on the component (TextView, ImageView, etc.) and click the infer constraints button. It looks like 2 yellow plus signs.
infer constraints image
add this in xml to the button etc
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.57"
then play with it in the design.
Good luck! :)
Basically this type of problem happens when you use ConstraintLayout .
So Go to Preview From Android Studio.
Select That button you want to set at the specific position
At last just click the infer constrains button as i mention in
the picture below on a red circle.
Thats All run the project and see magic
Thank you
Every time I create views like Button and TextView in ConstraintLayout, they all get stuck at the top corner instead of where I placed them.
I tried to create new activities and change the emulator, but the result is still the same.
This is a screenshot of what's happening:
What may be the issue?
As stated in Constraint Layout guides:
If a view has no constraints when you run your layout on a device, it is drawn at position [0,0] (the top-left corner).
You must add at least one horizontal and one vertical constraint for the view.
I guess you haven't applied any constraints.
Either manually apply constraints to the view, or let the layout editor do it for you using "Infer constraints" button:
When you drop a view into the Layout Editor, it stays where you leave it even if it has no constraints... this is only to make editing easier
In other words, the View will "stay where you leave it" until you add constraints.
The reason it looks different in the Preview vs your app is because anything in your XML with tools: is going to be removed from the code when your app runs. These options are only for the Android Studio layout editor, not representative of what you should expect to see when the code runs.
And it may be troublesome for beginners because
a missing constraint won't cause a compilation error
However
the Layout Editor indicates missing constraints as an error in the toolbar. To view the errors and other warnings, click Show Warnings and Errors (red button with number). To help you avoid missing constraints, the Layout Editor can automatically add constraints for you with the Autoconnect and infer constraints features
More details
A quick, easy way to fix this is to click on the component (TextView, ImageView, etc.) and click the infer constraints button. It looks like 2 yellow plus signs.
infer constraints image
add this in xml to the button etc
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.57"
then play with it in the design.
Good luck! :)
Basically this type of problem happens when you use ConstraintLayout .
So Go to Preview From Android Studio.
Select That button you want to set at the specific position
At last just click the infer constrains button as i mention in
the picture below on a red circle.
Thats All run the project and see magic
Thank you
Every time I create views like Button and TextView in ConstraintLayout, they all get stuck at the top corner instead of where I placed them.
I tried to create new activities and change the emulator, but the result is still the same.
This is a screenshot of what's happening:
What may be the issue?
As stated in Constraint Layout guides:
If a view has no constraints when you run your layout on a device, it is drawn at position [0,0] (the top-left corner).
You must add at least one horizontal and one vertical constraint for the view.
I guess you haven't applied any constraints.
Either manually apply constraints to the view, or let the layout editor do it for you using "Infer constraints" button:
When you drop a view into the Layout Editor, it stays where you leave it even if it has no constraints... this is only to make editing easier
In other words, the View will "stay where you leave it" until you add constraints.
The reason it looks different in the Preview vs your app is because anything in your XML with tools: is going to be removed from the code when your app runs. These options are only for the Android Studio layout editor, not representative of what you should expect to see when the code runs.
And it may be troublesome for beginners because
a missing constraint won't cause a compilation error
However
the Layout Editor indicates missing constraints as an error in the toolbar. To view the errors and other warnings, click Show Warnings and Errors (red button with number). To help you avoid missing constraints, the Layout Editor can automatically add constraints for you with the Autoconnect and infer constraints features
More details
A quick, easy way to fix this is to click on the component (TextView, ImageView, etc.) and click the infer constraints button. It looks like 2 yellow plus signs.
infer constraints image
add this in xml to the button etc
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.57"
then play with it in the design.
Good luck! :)
Basically this type of problem happens when you use ConstraintLayout .
So Go to Preview From Android Studio.
Select That button you want to set at the specific position
At last just click the infer constrains button as i mention in
the picture below on a red circle.
Thats All run the project and see magic
Thank you
Every time I create views like Button and TextView in ConstraintLayout, they all get stuck at the top corner instead of where I placed them.
I tried to create new activities and change the emulator, but the result is still the same.
This is a screenshot of what's happening:
What may be the issue?
As stated in Constraint Layout guides:
If a view has no constraints when you run your layout on a device, it is drawn at position [0,0] (the top-left corner).
You must add at least one horizontal and one vertical constraint for the view.
I guess you haven't applied any constraints.
Either manually apply constraints to the view, or let the layout editor do it for you using "Infer constraints" button:
When you drop a view into the Layout Editor, it stays where you leave it even if it has no constraints... this is only to make editing easier
In other words, the View will "stay where you leave it" until you add constraints.
The reason it looks different in the Preview vs your app is because anything in your XML with tools: is going to be removed from the code when your app runs. These options are only for the Android Studio layout editor, not representative of what you should expect to see when the code runs.
And it may be troublesome for beginners because
a missing constraint won't cause a compilation error
However
the Layout Editor indicates missing constraints as an error in the toolbar. To view the errors and other warnings, click Show Warnings and Errors (red button with number). To help you avoid missing constraints, the Layout Editor can automatically add constraints for you with the Autoconnect and infer constraints features
More details
A quick, easy way to fix this is to click on the component (TextView, ImageView, etc.) and click the infer constraints button. It looks like 2 yellow plus signs.
infer constraints image
add this in xml to the button etc
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.57"
then play with it in the design.
Good luck! :)
Basically this type of problem happens when you use ConstraintLayout .
So Go to Preview From Android Studio.
Select That button you want to set at the specific position
At last just click the infer constrains button as i mention in
the picture below on a red circle.
Thats All run the project and see magic
Thank you