Calamity :
I have a fragment and I'm using an accordion view in it, which I downloaded form GitHub - https://github.com/riyagayasen/Android_accordion_view, and in its body (which is a RelativeLayout) I need a custom view named AccordionItem like the second one on the pic, which I simply made in fragment's xml: https://pp.userapi.com/c846123/v846123865/1d925d/CaEhr8uSLFA.jpg
But my custom view (the first one) has a wrap_content width behavior for some reason.
The code follows:
Here is the body of an AccordionView in my fragment's xml
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!-- This is my custom view -->
<!-- Notice that the width is set to match_constraint -->
<com.app.myapp.views.AccordionItem
android:id="@+id/item"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
app:isStarred="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:title="Another title" />
<!-- This is an example of how my view should look like -->
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:background="@drawable/accordion_item"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/item">
<CheckBox
android:id="@+id/favourite_checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:button="@drawable/star_checkbox"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/ic_t" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:text="Title"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="@+id/imageView2"
app:layout_constraintStart_toEndOf="@+id/imageView2"
app:layout_constraintTop_toTopOf="@+id/imageView2" />
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
The xml of the custom view:
<?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"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/accordion_item">
<CheckBox
android:id="@+id/favourite_checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:button="@drawable/star_checkbox"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toEndOf="@+id/title"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="@+id/item_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/ic_t" />
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:text="Title"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="@+id/item_icon"
app:layout_constraintStart_toEndOf="@+id/item_icon"
app:layout_constraintTop_toTopOf="@+id/item_icon" />
</android.support.constraint.ConstraintLayout>
Java class of the custom view:
public class AccordionItem extends ConstraintLayout {
private String titleString;
private TextView title;
private boolean isStarred;
public AccordionItem(Context context) {
super(context);
initView();
}
public AccordionItem(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray a = context.getTheme().obtainStyledAttributes(
attrs,
R.styleable.AccordionItem,
0, 0);
try {
titleString = a.getString(R.styleable.AccordionItem_title);
isStarred = a.getBoolean(R.styleable.AccordionItem_isStarred, false);
} finally {
a.recycle();
}
initView();
}
private void initView() {
View view = inflate(getContext(), R.layout.accordion_item, null);
addView(view);
}
public void setTitleString(String titleString) {
this.titleString = titleString;
invalidate();
requestLayout();
}
public String getTitleString() {
return titleString;
}
public void setStarred(boolean starred) {
this.isStarred = starred;
invalidate();
requestLayout();
}
public boolean isStarred() {
return isStarred;
}
}
And finally the attributes of my view:
<declare-styleable name="AccordionItem">
<attr name="title" format="string"/>
<attr name="isStarred" format="boolean"/>
<attr name="background_drawable" format="reference"/>
</declare-styleable>
I expect my view to take the whole width it is given, but it shrinks instead. Am I using the wrong way of creating views, or the wrong layout that my view extends? Thank you.
fancyjyl :
inflate method with no parent will lost layoutParams(height,width)
private void initView() {
inflate(getContext(), R.layout.accordion_item, this);
// or
// View view = LayoutInflater.from(getContext()).inflate(R.layout.accordion_item, this, false);
// addView(view);
}