Android Development for Beginners : Court Counter - The Stages

activity_main.xml

<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:orientation="vertical">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:padding="4dp"
        android:text="Team A" />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:padding="4dp"
        android:text="0" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:text="+3 Points" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:text="+2 Points" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:text="Free throw" />
</LinearLayout>

I have a issue using just gravity, according to the code above, I've used this attribute android:layout_gravity="center_horizontal".

don't write "center_horizontal" just write "center"

@Wandersonjack, are your TextViews' layout widths the same as in this code? I reckon that's what's making the difference.

android:gravity="center_horizontal" is working for me

center_horizontal is not working for me

Gravity does'nt works much with ConstraintLayout .

@pranavsuresh7, change it to LinearLayout (delete and set new one)
NOTE to all! layout_gravity and gravity are two different things.

because I just had troubles myself figuring this out I thought I would share my solution to the gravity problem:
using LinearLayout and android:gravity="center" works perfectly fine for me :)

layout_gravity and gravity are two different things. agree with @perdskolska
just to clarify since i usually write in Hebrew its a right to left language so my phone is configure to present thing right to left as default
so i have been using gravity to fix it from day 1
so the differences are layout_gravity -working on the children while gravity is working only on the parent
hopefully that helps

this code looks good to any idea (that's my build)

<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="fill_parent"
android:layout_height="fill_parent"
tools:context="com.example.android.courtcounter.MainActivity">

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/Hello"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:padding="4dp"
        android:text=" Team A"

        />

    <TextView
        android:id="@+id/score"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/Hello"
        android:gravity="center"
        android:padding="4dp"
        android:text="3" />

    <Button
        android:id="@+id/button_points3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/score"
        android:layout_margin="8dp"
        android:gravity="center"
        android:text="+3Pointes"

        />

    <Button
        android:id="@+id/button_points2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/button_points3"
        android:layout_margin="8dp"
        android:gravity="center"
        android:text="+2 Pointes" />

    <Button
        android:id="@+id/button_points1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/button_points2"
        android:layout_margin="8dp"
        android:gravity="center"
        android:text="+1 Pointes"

        />
</RelativeLayout>

</android.support.constraint.ConstraintLayout>

the code is easy

its simple as i wrote

`

2 text views and 3 buttons. What am I missing? I can't continue.

put a zero in the image view box

must put 0 in the image view to continue

can we do like this

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:gravity="center_horizontal"
android:orientation="vertical">

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="4dp"
    android:text="Team A" />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="4dp"
    android:text="0" />


<Button
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    android:text="+3 Point" />

<Button
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    android:text="+2 Point" />

<Button
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    android:text="Free throw" />

thank you .. i did it

anybody please tell me whats wrong with this line of code?

Hi Ladies and Gentlemen!

I started to learn how to use Github.
And because of that I also tried to save the beginning of the project(Set up)
Here is the link where you can dowload the whole project and open it in Android Studio if you have difficulties to create(Or searching the xml file only):
https://github.com/LaszloLajosT/CourtCounter.git

layout_width for the text views and buttons should be match_parent
then give the text views a gravity (not layout_gravity) of center_horizontal.

I have a issue using just gravity, according to the code above, I've used this attribute android:layout_gravity="center_horizontal".

you can use this as an alternative

android:textAlignment="center"