Develop Reference

Custom buttons in different APIs

I did a custom button class for making square buttons. Buttons works fine in Nougat, but not showing in Lollipop and marshmallow. What is wrong with my code?
Java class:
public class SquareButton extends ToggleButton {
public SquareButton(Context context) {
super(context);
}
public SquareButton(Context context, AttributeSet attrs) {
super(context, attrs);
}
public SquareButton(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = MeasureSpec.getSize(heightMeasureSpec);
int size = width > height ? height : width;
setMeasuredDimension(size, size);
}
}
XML:
<android.support.constraint.ConstraintLayout 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"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="ru.energyhouse.energyhouse.presenter.Light.MainMenuLightFragment"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<ImageView
android:id="#+id/main_menu_light_icon_IV"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_marginBottom="0dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="0dp"
android:adjustViewBounds="true"
android:cropToPadding="false"
android:scaleType="fitCenter"
app:layout_constraintBottom_toTopOf="#+id/guideline11"
app:layout_constraintHorizontal_bias="0.503"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="#+id/guideline9"
app:srcCompat="#drawable/light_lightoff_big_ic" />
<TextView
android:id="#+id/main_menu_light_icon_TV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:gravity="center"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
android:textColor="#color/colorPrimary"
app:layout_constraintLeft_toLeftOf="#+id/main_menu_light_icon_IV"
app:layout_constraintRight_toRightOf="#+id/main_menu_light_icon_IV"
app:layout_constraintTop_toTopOf="#+id/guideline11"
app:layout_constraintHorizontal_bias="0.5" />
<android.support.constraint.Guideline
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/guideline9"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.1" />
<android.support.constraint.Guideline
android:id="#+id/guideline11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.25" />
<HorizontalScrollView
android:id="#+id/main_menu_light_scroll"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="16dp"
android:layout_marginLeft="0dp"
android:layout_marginRight="0dp"
android:layout_marginTop="16dp"
android:overScrollMode="never"
android:scrollbars="none"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/main_menu_light_icon_TV"
app:layout_constraintVertical_bias="0.0">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="2">
<LinearLayout
android:id="#+id/main_menu_light_firstRow"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center_vertical"
android:orientation="horizontal">
<ru.energyhouse.energyhouse.model.SquareButton
android:id="#+id/main_menu_light_bright_Btn"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/scenes_click"
android:paddingTop="45dp"
android:textOff="#null"
android:textOn="#null" />
<ru.energyhouse.energyhouse.model.SquareButton
android:id="#+id/main_menu_light_soft_Btn"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/scenes_click"
android:paddingTop="45dp"
android:textOff="#null"
android:textOn="#null" />
<ru.energyhouse.energyhouse.model.SquareButton
android:id="#+id/main_menu_light_manual_Btn"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/scenes_click"
android:paddingTop="45dp"
android:textOff="#null"
android:textOn="#null" />
<ru.energyhouse.energyhouse.model.SquareButton
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginLeft="24dp"
android:layout_weight="1"
android:background="#drawable/scenes_click"
android:paddingTop="45dp"
android:textOff="#null"
android:textOn="#null" />
</LinearLayout>
<LinearLayout
android:id="#+id/main_menu_light_secondRow"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center_vertical"
android:orientation="horizontal">
<ru.energyhouse.energyhouse.model.SquareButton
android:id="#+id/main_menu_light_allOff_Btn"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#drawable/scenes_click"
android:layout_weight="1"
android:text="#null"
android:textOff="#null"
android:textOn="#null" />
<ru.energyhouse.energyhouse.model.SquareButton
android:id="#+id/main_menu_light_backLight_Btn"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#drawable/scenes_click"
android:layout_weight="1"
android:text="#null"
android:textOff="#null"
android:textOn="#null" />
</LinearLayout>
</LinearLayout>
</HorizontalScrollView>
</android.support.constraint.ConstraintLayout>
Nougat: enter image description here
Lollipop: enter image description here
UPD.
if set width 200dp - it works. I need width like height and height - match_parent.

Try to change onMeasure method to following:
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int size = widthMeasureSpec > heightMeasureSpec ? heightMeasureSpec : widthMeasureSpec;
super.onMeasure(size, size);
}

You could use simple button with buttonshape.xml as background of Button
<Button
android:text="Button"
android:textColor="#FFFFFF"
android:textSize="30sp"
android:layout_width="200dp"
android:layout_height="200dp"
android:background="#drawable/buttonshape"
/>
paste this code in drawables as buttonshape.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<corners
android:radius="20dp"
/>
<solid
android:color="#FFFFF"
/>
<size
android:width="200dp"
android:height="200dp"
/>
</shape>

Custom View getHitRect return wrong value

I created a new custom view that looks like this
public class SearchCategoryPanel extends RelativeLayout {
private boolean hasRetrieved = false;
private GridLayout categoryContainer;
private TextView scpLoadingText;
public static final int HEIGHT = 360;
private ArrayList<OnCategoryItemClickListener> onCategoryItemClickListeners = new ArrayList<OnCategoryItemClickListener>();
public SearchCategoryPanel(Context context) {
super(context);
init();
}
public SearchCategoryPanel(Context context, AttributeSet attrs) {
super(context, attrs);
Log.i(SearchCategoryPanel.class.getSimpleName(), this.getTop() + "");
init();
}
public SearchCategoryPanel(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
public void init() {
inflate(getContext(), R.layout.search_category_panel, this);
this.scpLoadingText = (TextView) findViewById(R.id.sCategoryPanelLoadingText);
this.categoryContainer = (GridLayout) findViewById(R.id.sCategoryContainer);
this.setVisibility(View.GONE);
}
public void show() {
this.setVisibility(View.VISIBLE);
}
public void hide() {
this.setVisibility(View.GONE);
}
public void setProcessing(boolean on) {
if(!on) {
this.scpLoadingText.setVisibility(View.GONE);
} else {
this.scpLoadingText.setVisibility(View.VISIBLE);
}
}
public void addCategoryItemUsingVo(CategoryVo categoryVo) {
CategoryItem item = new CategoryItem(getContext());
item.setCategoryVo(categoryVo);
item.setOnItemClickListener(new CategoryItem.OnClickListener() {
#Override
public void onClick(CategoryVo categoryVo) {
triggerOnCategoryItemClickListener(categoryVo);
}
});
this.categoryContainer.addView(item);
}
public void removeAllItems() {
this.categoryContainer.removeAllViews();
}
public boolean hasRetrieved() {
return hasRetrieved;
}
public interface OnCategoryItemClickListener {
public void onClick(CategoryVo categoryVo);
}
public void setOnCategoryItemClickListener(OnCategoryItemClickListener listener) {
this.onCategoryItemClickListeners.add(listener);
}
private void triggerOnCategoryItemClickListener(CategoryVo vo) {
for(OnCategoryItemClickListener listener : onCategoryItemClickListeners ) {
listener.onClick(vo);
}
}
}
Then, I try to call the getHitRect
Rect rectF = new Rect();
searchCategoryPanel.getHitRect(rectF);
Log.i(ARModeActivity.class.getSimpleName(), "Rect: " + rectF.toString());
The log returns strange value: Rect: Rect(0, 0 - 1920, 1164). this means the relative layout covers the whole screen which is not correct.
The SearchCategoryPanel xml looks like this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:background="#7F000000"
android:layout_alignParentBottom="true"
android:maxHeight="360dp"
android:layout_height="160dp">
<LinearLayout
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Search Category"
android:textAlignment="center"
android:textColor="#android:color/white"
android:textSize="24dp"/>
<TextView
android:id="#+id/sCategoryPanelLoadingText"
android:layout_width="wrap_content"
android:textSize="24sp"
android:textColor="#android:color/white"
android:layout_height="match_parent"
android:text="Loading.."/>
<HorizontalScrollView
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<GridLayout
android:id="#+id/sCategoryContainer"
android:layout_width="wrap_content"
android:orientation="horizontal"
android:layout_height="wrap_content">
</GridLayout>
</HorizontalScrollView>
</LinearLayout>
</RelativeLayout>
The relative layout only has 360dp in height, andfull width (look at the xml). but it returns the wrong value. I have read about onMeasure and onSizeChanged, but nothing helped
Here How I call the search_category_panel layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent"
android:id="#+id/rootArMode"
tools:context="com.imav.ARModeActivity">
<RelativeLayout
android:id="#+id/rlInfoARMode"
android:layout_alignParentTop="true"
android:layout_width="match_parent"
android:background="#7F000000"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="wrap_content"
android:orientation="vertical"
android:layout_centerHorizontal="true"
android:gravity="center"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="#FFF"
android:textSize="24sp"
android:text="Interaction Guide"/>
<LinearLayout
android:gravity="left"
android:layout_width="match_parent"
android:layout_marginBottom="4sp"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textColor="#FFF"
android:textSize="18sp"
android:textStyle="bold"
android:text="Select: "/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textColor="#FFF"
android:textSize="16sp"
android:text="Tap on object with 1 finger "/>
</LinearLayout>
<LinearLayout
android:gravity="left"
android:layout_width="match_parent"
android:layout_marginBottom="4sp"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textColor="#FFF"
android:textSize="18sp"
android:textStyle="bold"
android:text="Move: "/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textColor="#FFF"
android:textSize="16sp"
android:text="Touch and Drag Object with 1 finger "/>
</LinearLayout>
<LinearLayout
android:gravity="left"
android:layout_marginBottom="4sp"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textColor="#FFF"
android:textSize="18sp"
android:textStyle="bold"
android:text="Rotate: "/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textColor="#FFF"
android:textSize="16sp"
android:text="Touch and drag object with 2 fingers "/>
</LinearLayout>
<LinearLayout
android:gravity="left"
android:layout_width="match_parent"
android:layout_marginBottom="4sp"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textColor="#FFF"
android:textSize="18sp"
android:textStyle="bold"
android:text="Scale: "/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textColor="#FFF"
android:textSize="16sp"
android:text="Touch and pinch object with 2 fingers "/>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
<Button
android:id="#+id/btnCloseArMode"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_alignParentLeft="true"
android:layout_marginLeft="10dp"
android:layout_marginRight="15dp"
android:background="#drawable/ic_clear_white_24dp" />
<RelativeLayout
android:id="#+id/rlOpenActionBar"
android:layout_width="55dp"
android:layout_height="match_parent"
android:layout_alignParentRight="true">
<Button
android:id="#+id/btnOpenActionBar"
android:background="#drawable/ic_keyboard_backspace_white_24dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="55dp"
android:id="#+id/rlActionBar"
android:layout_height="match_parent"
android:visibility="gone"
android:background="#7F000000"
android:layout_alignParentRight="true">
<Button
android:id="#+id/btnInfoArMode"
android:layout_width="wrap_content"
android:background="#drawable/ic_error_white_24dp"
android:layout_height="wrap_content" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true">
<LinearLayout
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="wrap_content">
<Button
android:id="#+id/btnAddObjArMode"
android:layout_marginBottom="8dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/ic_add_white_24dp"
android:layout_below="#+id/btnSaveSceneArMode" />
<Button
android:id="#+id/btnSaveSceneArMode"
android:layout_marginBottom="8dp"
android:layout_width="wrap_content"
android:background="#drawable/ic_add_a_photo_white_24dp"
android:layout_height="wrap_content" />
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"
android:id="#+id/pbSaveSceneArMode"/>
<Button
android:id="#+id/btnShareARMode"
android:layout_width="wrap_content"
android:background="#drawable/ic_share_white_24dp"
android:layout_height="wrap_content" />
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<LinearLayout
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="wrap_content">
<Button
android:id="#+id/btnTrashArMode"
android:layout_width="wrap_content"
android:background="#drawable/ic_delete_white_24dp"
android:layout_height="wrap_content" />
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
<com.imav.view.SearchCataloguePanel
android:id="#+id/searchCataloguePanelArMode"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</com.imav.view.SearchCataloguePanel>
<com.imav.view.SearchCategoryPanel
android:id="#+id/searchCategoryPanelArMode"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</com.imav.view.SearchCategoryPanel>
</RelativeLayout>

My first approach would be not to override the onMeasure() in your custom view SearchCategoryPanel. Because you are forcing a different dimension than the ones provided by the xml.

GridView does not expand

I am kinda new in android and got such a problem, I am trying to use ExpandableHeightGridView for gridview inside scrollview, but layout doesn't render, some advice please.
It always gives me this error:
Exception raised during rendering: ScrollView can host only one direct child
ExpandableHeightGridView.class:
public class ExpandableHeightGridView extends GridView {
boolean expanded = false;
public ExpandableHeightGridView(Context context)
{
super(context);
}
public ExpandableHeightGridView(Context context, AttributeSet attrs)
{
super(context, attrs);
}
public ExpandableHeightGridView(Context context, AttributeSet attrs,
int defStyle)
{
super(context, attrs, defStyle);
}
public boolean isExpanded()
{
return expanded;
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
// HACK! TAKE THAT ANDROID!
if (isExpanded())
{
// Calculate entire height by providing a very large height hint.
// View.MEASURED_SIZE_MASK represents the largest height possible.
int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
}
else
{
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public void setExpanded(boolean expanded)
{
this.expanded = expanded;
} }
layout.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#fed70d"
android:orientation="horizontal">
<ImageView
android:id="#+id/iconBack"
android:layout_width="45dp"
android:layout_height="match_parent"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:paddingBottom="16dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="16dp"
android:src="#drawable/icon_back_white" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="20dp"
android:text="Wishlist"
android:textColor="#ac920d"
android:textSize="24sp" />
<LinearLayout
android:id="#+id/myCart"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center|right"
android:orientation="vertical">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginRight="10dp"
android:orientation="horizontal">
<ImageView
android:id="#+id/addedInCart"
android:layout_width="27dp"
android:layout_height="27dp"
android:layout_gravity="center|right"
android:src="#drawable/icon_menu_cart" />
<TextView
android:layout_width="15dp"
android:layout_height="15dp"
android:layout_marginTop="5dp"
android:background="#drawable/icon_mycart_count"
android:gravity="center_horizontal|center"
android:text="2"
android:textColor="#ffffff"
android:textSize="10dp" />
</LinearLayout>
<TextView
android:id="#+id/myMoneyInMyPocket"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center|right"
android:layout_marginRight="10dp"
android:text="2000$"
android:textSize="14sp" />
</LinearLayout>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#ad8c22" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ffffff">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="#fed70d"
android:orientation="horizontal"
android:weightSum="5.0">
<LinearLayout
android:id="#+id/menuItemStores"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:orientation="vertical"
android:paddingTop="8dp">
<ImageView
android:id="#+id/menuIconStores"
android:layout_width="27dp"
android:layout_height="27dp"
android:layout_gravity="center"
android:src="#drawable/icon_menu_logo" />
<TextView
android:id="#+id/menuTextStores"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Stores"
android:textSize="14sp" />
</LinearLayout>
<LinearLayout
android:id="#+id/menuItemInfo"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:orientation="vertical"
android:paddingTop="8dp">
<ImageView
android:id="#+id/menuIconInfo"
android:layout_width="27dp"
android:layout_height="27dp"
android:layout_gravity="center"
android:src="#drawable/icon_menu_info" />
<TextView
android:id="#+id/menuTextInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Info"
android:textSize="14sp" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1.0"
android:background="#drawable/selected_menu_background"
android:orientation="vertical"
android:paddingTop="8dp">
<ImageView
android:id="#+id/menuIconWishlist"
android:layout_width="27dp"
android:layout_height="27dp"
android:layout_gravity="center"
android:src="#drawable/icon_wishlist" />
<TextView
android:id="#+id/menuTextWishlist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Wishlist"
android:textColor="#ffffff"
android:textSize="14sp" />
</LinearLayout>
<LinearLayout
android:id="#+id/menuItemAccount"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:orientation="vertical"
android:paddingTop="8dp">
<ImageView
android:id="#+id/menuIconAccount"
android:layout_width="27dp"
android:layout_height="27dp"
android:layout_gravity="center"
android:src="#drawable/icon_menu_account" />
<TextView
android:id="#+id/menuTextAccount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Account"
android:textSize="14sp" />
</LinearLayout>
<LinearLayout
android:id="#+id/menuItemCart"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:orientation="vertical"
android:paddingTop="8dp">
<ImageView
android:id="#+id/menuIconCart"
android:layout_width="27dp"
android:layout_height="27dp"
android:layout_gravity="center"
android:src="#drawable/icon_menu_cart" />
<TextView
android:id="#+id/menuTextCart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Cart"
android:textSize="14sp" />
</LinearLayout>
</LinearLayout>
<View
android:id="#+id/dropShadow"
android:layout_width="match_parent"
android:layout_height="5dp"
android:background="#drawable/drop_shadow"
android:cacheColorHint="#f1e7dd"
android:paddingTop="8dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<com.example.utils.ExpandableHeightGridView
android:id="#+id/wishListGridView"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:columnWidth="80dp"
android:gravity="center"
android:horizontalSpacing="10dp"
android:isScrollContainer="false"
android:numColumns="2"
android:paddingBottom="#dimen/activity_horizontal_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp" />
</LinearLayout>
</ScrollView>
</LinearLayout>
</LinearLayout>

This problem is discussed here.
Try adding one more LinearLayout inside your ScrollView as a direct child and put all other layouts/controls inside of the new LinearLayout.

GridView Expandable Height

I'm using ExpandableHeightGridView but I don't manage to calculate the correct height of the gridview, I use custom rows made ​​by an external layout, but it cuts several rows at the bottom,
here's the code:
public class ExpandableHeightGridView extends GridView {
boolean expanded = false;
public ExpandableHeightGridView(Context context) {
super(context);
}
public ExpandableHeightGridView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ExpandableHeightGridView(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
}
public boolean isExpanded() {
return expanded;
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (isExpanded()) {
int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
} else {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public void setExpanded(boolean expanded) {
this.expanded = expanded;
}
}
Custom Row
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#null"
android:orientation="vertical" >
<TextView
android:id="#+id/textViewBioAnno"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:gravity="center_horizontal"
android:text="TextView"
android:textColor="#color/oro"
android:textSize="20sp" />
<TextView
android:id="#+id/textViewBioTesto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="TextView"
android:textSize="15sp" />
</LinearLayout>
My Layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/sfondo"
android:orientation="vertical" >
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<ImageView
android:id="#+id/imageView3"
android:layout_width="wrap_content"
android:layout_height="80dp"
android:layout_marginTop="10dp"
android:scaleType="fitCenter"/>
<ImageButton
android:id="#+id/imageView1"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_margin="12dp"
android:background="#null"
android:scaleType="fitXY" />
</RelativeLayout>
<TextView
android:id="#+id/textViewBio"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="#string/bio"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#color/oro" />
<******.ExpandableHeightGridView
android:id="#+id/mebersListGridView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="15dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="15dp"
android:horizontalSpacing="10dp"
android:isScrollContainer="false"
android:numColumns="1"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="50dp"
android:layout_marginRight="50dp"
android:src="#drawable/fondo_pagina" />
<ImageView
android:id="#+id/ImageView02"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="70dp"
android:layout_marginRight="70dp"/>
<ImageView
android:id="#+id/ImageView01"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="100dp"
android:layout_marginRight="100dp"" />
</LinearLayout>
</ScrollView>
</LinearLayout>
My activity:
...
g = (ExpandableHeightGridView) findViewById(R.id.mebersListGridView);
arrayAdapter = new StandardArrayAdapter(this,
R.layout.activity_bio, arrayList);
g.setExpanded(true);
g.setAdapter(arrayAdapter);
...

Gridview elements not getting centered in relativeLayout

I am using a gridview in my application in which I want to make my view centered if there only one element in my adapter and maximum of three elements in one row.But for some reason one element is not being centered.
Please help me in this.
this is my parent layout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center_horizontal"
>
<RelativeLayout
android:id="#+id/cplist_title_layout"
android:layout_width="wrap_content"
android:layout_height="74dp"
android:gravity="center_vertical" >
<TextView
android:id="#+id/cplist_title"
android:layout_width="match_parent"
android:layout_height="74dp"
android:layout_marginLeft="32dp"
android:layout_marginRight="32dp"
android:gravity="left|center_vertical"
android:textColor="#color/RGB_0_176_241"
android:textSize="19dp" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/cplist_grid_layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/cplist_title_layout"
android:paddingTop="8dp" >
<GridView
android:id="#+id/cp_gridView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="21dp"
android:layout_marginLeft="32dp"
android:layout_marginRight="32dp"
android:layout_marginTop="8dp"
android:numColumns="auto_fit"
android:verticalSpacing="0dp"
android:horizontalSpacing="0dp"
>
</GridView>
</RelativeLayout>
</RelativeLayout>
this is my grid view item layout
<RelativeLayout
android:id="#+id/detail_cplist_item_logo"
android:layout_width="match_parent"
android:layout_height="108dp"
android:gravity="center_vertical"
android:layout_marginLeft="10dp" >
<ImageView
android:id="#+id/detail_cplist_item_cplogo_bg"
android:layout_width="225dp"
android:layout_height="104dp"
android:layout_centerVertical="true"
android:background="#color/RGB_23_27_33"
android:gravity="center" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/detail_cplist_item_details"
android:layout_width="match_parent"
android:layout_height="59dp"
android:layout_below="#id/detail_cplist_item_logo"
android:gravity="center_vertical"
android:layout_marginLeft="10dp" >
<LinearLayout
android:id="#+id/detail_cplist_item_price"
android:layout_width="match_parent"
android:layout_height="31dp"
>
<TextView
android:id="#+id/detail_cp_price_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="6dp"
android:layout_marginTop="4dp"
android:gravity="left"
android:text="Free"
android:textColor="#color/RGB_100_217_217_217"
android:textSize="18dp" />
</LinearLayout>
<RelativeLayout
android:id="#+id/detail_cplist_item_quality_section"
android:layout_width="37dp"
android:layout_height="19dp"
android:layout_below="#id/detail_cplist_item_price"
android:layout_centerVertical="true"
android:layout_marginBottom="9dp"
>
<ImageView
android:id="#+id/detail_cplist_item_quality"
android:layout_width="37dp"
android:layout_height="19dp"
android:gravity="center"
android:src="#drawable/common_selector_icon_hd" />
</RelativeLayout>
<ImageView
android:id="#+id/detail_cplist_item_tag_tv"
android:layout_width="21dp"
android:layout_height="wrap_content"
android:layout_below="#id/detail_cplist_item_price"
android:layout_centerVertical="true"
android:layout_marginLeft="9dp"
android:layout_toRightOf="#id/detail_cplist_item_quality_section"
android:src="#drawable/tag_tv"
android:visibility="invisible" />
<ImageView
android:id="#+id/detail_cplist_item_tag_mobile"
android:layout_width="21dp"
android:layout_height="wrap_content"
android:layout_below="#id/detail_cplist_item_price"
android:layout_centerVertical="true"
android:layout_marginLeft="3dp"
android:layout_toRightOf="#id/detail_cplist_item_tag_tv"
android:src="#drawable/tag_mobile" />
<ImageView
android:id="#+id/detail_cplist_item_live_icon"
android:layout_width="37dp"
android:layout_height="19dp"
android:layout_below="#id/detail_cplist_item_price"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_toRightOf="#id/detail_cplist_item_quality_section"
android:src="#drawable/tag_live"
android:visibility="invisible" />
</RelativeLayout>

Instead of gravity, set this:
android:layout_centerInParent="true"

Had the same problem... I solved it with overridden onMeasure()
public class GridViewEx extends GridView {
private int mRequestedNumColumns = 0;
public GridViewEx(Context context) {
super(context);
}
public GridViewEx(Context context, AttributeSet attrs) {
super(context, attrs);
}
public GridViewEx(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
#Override
public void setNumColumns(int numColumns) {
super.setNumColumns(numColumns);
if (numColumns != mRequestedNumColumns) {
mRequestedNumColumns = numColumns;
}
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (mRequestedNumColumns > 0) {
int width = (mRequestedNumColumns * getColumnWidth())
+ ((mRequestedNumColumns-1) * getHorizontalSpacing())
+ getListPaddingLeft() + getListPaddingRight();
setMeasuredDimension(width, getMeasuredHeight());
}
}
}

I was using
android:layout_below="#+id/msg"
works fine after i removed it and used
android:layout_centerInParent="true"