Menu
I am using ConstraintLayout for activity:
<?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.site.path.to.AuthenticationActivity">
<EditText
android:id="@+id/login"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:inputType="none"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<EditText
android:id="@+id/password"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:inputType="textPassword"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/login"/>
<Button
android:id="@+id/login_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Log in"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="@+id/password"/>
<FrameLayout
android:visibility="gone"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@color/default_background"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
</FrameLayout>
</android.support.constraint.ConstraintLayout>
FrameLayout should hide all content of the page when visible. But it hides all content except button. Why the button doesn't hide? How to fix it?
846
ConstraintLayout has flat view hierarchy unlike other layouts, so does a better performance than relative layout. Yes, this is the biggest advantage of Constraint Layout, the only single layout can handle your UI. Where in the Relative layout you needed multiple nested layouts (LinearLayout + RelativeLayout).
In a FrameLayout , the z-index is defined by the order in which the items are added, for example: <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" > <ImageView android:layout_width="wrap_content" android:layout_height=" ...
A ConstraintLayout is a ViewGroup which allows you to position and size widgets in a flexible way. Note: ConstraintLayout is available as a support library that you can use on Android systems starting with API level 9 (Gingerbread).
Most of what can be achieved in LinearLayout and RelativeLayout can be done in ConstraintLayout.
This one is what makes ConstraintLayout that powerful. You can position elements relatively with each other (just like in RelativeLayout). Constraints could be either another view or directly the parent. Let’s see it in action. With the help of these constraint properties, you can align elements the way you like without having nested layouts.
Even if elements don’t have their z-index set, there is a rhyme and reason to which ones will be on top. In our case, none of the elements have a z-index value. So their stacking order is determined by their order of appearance.
Relative positioning is one of the basic building blocks of creating layouts in ConstraintLayout. Those constraints allow you to position a given widget relative to another one. You can constrain a widget on the horizontal and vertical axis: Horizontal Axis: left, right, start and end sides
“Gone Margin” is introduced with ConstraintLayout to solve this issue. Imagine that you have a hierarchy as shown above. You want to make A’s visibility GONE. When A is GONE, B will automatically slide to A’s position. In order to prevent that you can give gone_margin to the related direction.
Try to set android:stateListAnimator="@null" to the Button/AppCompatButton
In Lollipop (Android 5.0 (API 21)) and above, Buttons have a default elevation which causes them to always draw on top.
<?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">
<ImageView
android:id="@+id/background_image"
android:layout_width="0dp"
android:layout_height="0dp"
android:scaleType="centerCrop"
android:tint="#80000000"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="@+id/logo"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="32dp"
android:layout_marginLeft="32dp"
android:layout_marginRight="32dp"
android:layout_marginStart="32dp"
android:layout_marginTop="24dp"
android:src="@drawable/logo"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/background_image"
app:layout_constraintVertical_bias="0.049"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintRight_creator="1" />
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="7dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="7dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:fontFamily="sans-serif-light"
android:text="There is More"
android:textColor="@android:color/white"
app:layout_constraintBottom_toTopOf="@+id/scrollView2"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="@+id/logo"
app:layout_constraintTop_toTopOf="@+id/logo"
app:layout_constraintVertical_bias="1.0"
tools:ignore="HardcodedText" />
<ScrollView
android:id="@+id/scrollView2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="32dp"
android:layout_marginLeft="32dp"
android:layout_marginRight="32dp"
android:layout_marginStart="32dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/logo"
app:layout_constraintVertical_bias="0.050000012">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.design.widget.TextInputLayout
android:id="@+id/input_layout_first_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeEditTextLight">
<EditText
android:id="@+id/input_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Name"
android:inputType="textPersonName"
android:theme="@style/ThemeEditTextLight" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:id="@+id/input_layout_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeEditTextLight">
<EditText
android:id="@+id/input_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Email"
android:inputType="textEmailAddress"
android:theme="@style/ThemeEditTextLight" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:id="@+id/input_layout_phone"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeEditTextLight">
<EditText
android:id="@+id/input_phone"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Phone"
android:inputType="phone"
android:theme="@style/ThemeEditTextLight" />
</android.support.design.widget.TextInputLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<android.support.design.widget.TextInputLayout
android:id="@+id/input_layout_password"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:theme="@style/ThemeEditTextLight">
<EditText
android:id="@+id/input_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Password"
android:inputType="textPassword"
android:theme="@style/ThemeEditTextLight" />
</android.support.design.widget.TextInputLayout>
</LinearLayout>
</LinearLayout>
</ScrollView>
<android.support.v7.widget.AppCompatButton
android:id="@+id/sign_up_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="32dp"
android:layout_marginLeft="32dp"
android:layout_marginRight="32dp"
android:layout_marginStart="32dp"
android:layout_marginTop="16dp"
android:backgroundTint="#2a98f0"
android:stateListAnimator="@null"
android:elevation="0dp"
android:paddingBottom="16dp"
android:paddingTop="16dp"
android:text="Sign up"
android:textColor="@android:color/white"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/scrollView2"
app:layout_constraintVertical_bias="0.100000024" />
<TextView
android:id="@+id/or_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:fontFamily="sans-serif-light"
android:gravity="center"
android:text="or\nSign up with social sites"
android:textColor="@color/white"
app:layout_constraintBottom_toTopOf="@+id/imageView6"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" />
<ImageView
android:id="@+id/imageView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/or_tv"
app:layout_constraintVertical_bias="0.8"
app:srcCompat="@drawable/ic_google_plus" />
<FrameLayout
android:id="@+id/progressBar"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@color/red"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ProgressBar
android:id="@+id/progressBarChild"
style="?android:attr/progressBarStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />
</FrameLayout>
</android.support.constraint.ConstraintLayout>
This worked for me.
152
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
