I'm trying to display 8 items inside a gridview. Sadly, the gridview height is always too little, so that it only shows the first row, and a little part of the second.
Setting android:layout_height="300dp" makes it work. wrap_content and fill_parent apparently not.
My grid view:
<GridView
android:id="#+id/myId"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:horizontalSpacing="2dp"
android:isScrollContainer="false"
android:numColumns="4"
android:stretchMode="columnWidth"
android:verticalSpacing="20dp" />
My items resource:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:minHeight="?android:attr/listPreferredItemHeight" >
<ImageView
android:id="#+id/appItemIcon"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="#android:drawable/ic_dialog_info"
android:scaleType="center" />
<TextView
android:id="#+id/appItemText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="My long application name"
android:gravity="center_horizontal"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
The issue does not seem related to a lack of vertical space.
What can I do ?
After (too much) research, I stumbled on the excellent answer of Neil Traft.
Adapting his work for the GridView has been dead easy.
ExpandableHeightGridView.java:
package com.example;
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;
}
}
Include it in your layout like this:
<com.example.ExpandableHeightGridView
android:id="#+id/myId"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:horizontalSpacing="2dp"
android:isScrollContainer="false"
android:numColumns="4"
android:stretchMode="columnWidth"
android:verticalSpacing="20dp" />
Lastly you just need to ask it to expand:
mAppsGrid = (ExpandableHeightGridView) findViewById(R.id.myId);
mAppsGrid.setExpanded(true);
After using the answer from #tacone and making sure it worked, I decided to try shorting down the code. This is my result. PS: It is the equivalent of having the boolean "expanded" in tacones answer always set to true.
public class StaticGridView extends GridView {
public StaticGridView(Context context) {
super(context);
}
public StaticGridView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public StaticGridView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK, MeasureSpec.AT_MOST));
getLayoutParams().height = getMeasuredHeight();
}
}
Another similar approach that worked for me, is to calculate the height for one row and then with static data (you may adapt it to paginate) you can calculate how many rows you have and resize the GridView height easily.
private void resizeGridView(GridView gridView, int items, int columns) {
ViewGroup.LayoutParams params = gridView.getLayoutParams();
int oneRowHeight = gridView.getHeight();
int rows = (int) (items / columns);
params.height = oneRowHeight * rows;
gridView.setLayoutParams(params);
}
Use this code after setting the adapter and when the GridView is drawn or you will get height = 0.
gridView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
if (!gridViewResized) {
gridViewResized = true;
resizeGridView(gridView, numItems, numColumns);
}
}
});
Found tacones answer helpfull... so i ported it to C# (Xamarin)
public class ExpandableHeightGridView: GridView
{
bool _isExpanded = false;
public ExpandableHeightGridView(Context context) : base(context)
{
}
public ExpandableHeightGridView(Context context, IAttributeSet attrs) : base(context, attrs)
{
}
public ExpandableHeightGridView(Context context, IAttributeSet attrs, int defStyle) : base(context, attrs, defStyle)
{
}
public bool IsExpanded
{
get { return _isExpanded; }
set { _isExpanded = value; }
}
protected override 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( View.MeasuredSizeMask, MeasureSpecMode.AtMost);
base.OnMeasure(widthMeasureSpec,expandSpec);
var layoutParameters = this.LayoutParameters;
layoutParameters.Height = this.MeasuredHeight;
}
else
{
base.OnMeasure(widthMeasureSpec,heightMeasureSpec);
}
}
}
Jacob R solution in Kotlin:
class ExpandableHeightGridView #JvmOverloads constructor(
context: Context,
attrs: AttributeSet? = null,
defStyleAttr: Int = 0
) : GridView(context, attrs, defStyleAttr) {
override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
val expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK,
MeasureSpec.AT_MOST)
super.onMeasure(widthMeasureSpec, expandSpec)
layoutParams.height = measuredHeight
}
}
After adding GridView to RecyclerView I got a full-size GridView (all rows are visible), as expected.
Just calculate the height for AT_MOST and set to on measure. Here GridView Scroll will not work so. Need to use Vertical Scroll View explicitly.
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int heightSpec;
if (getLayoutParams().height == LayoutParams.WRAP_CONTENT) {
heightSpec = MeasureSpec.makeMeasureSpec(
Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
}
else {
// Any other height should be respected as is.
heightSpec = heightMeasureSpec;
}
super.onMeasure(widthMeasureSpec, heightSpec);
}
Related
I am trying to create a textview that will always be squared so I have implemented this custom class.
public class SquareTextView extends TextView {
public SquareTextView(Context context) {
super(context);
}
public SquareTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public SquareTextView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int max = Math.max(getMeasuredWidth(), getMeasuredHeight());
setMeasuredDimension(max, max);
}
}
Here is an example layout that illustrates the problem:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="8dp"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingTop="8dp">
<com.mypackage.SquareTextView
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_gravity="right|top"
android:background="#000"
android:gravity="center"
android:padding="4dp"
android:text="1"
android:textColor="#FFF"/>
</LinearLayout>
Here is an image of this
This works great in getting the view squared, however, it seems like the gravity gets messed up. With this, the text seems to always be in the top left corner. How can I have a TextView that will always be squared but still keep the gravity or at least be able to center the text?
EDIT: After some testing I have noticed that if you set the width or height to a specific dp size the gravity seems to be working again. So it probably has to do with the WRAP_CONTENT attribute. Will that be handled in another way in the onmeasure method that could cause my own method to not work as expected?
Hope you have already got the answer by now. If not, you can use this:
public class TextAlphaSquareTextView extends AppCompatTextView {
private int mTextAlpha = 0;
private boolean isSquare = false;
public TextAlphaSquareTextView(Context context) {
super(context);
init(null);
}
public TextAlphaSquareTextView(Context context, AttributeSet attrs) {
super(context, attrs);
init(attrs);
}
public TextAlphaSquareTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(attrs);
}
private void init(AttributeSet attrs) {
if (attrs == null) {
} else {
TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.TextAlphaSquareTextView);
mTextAlpha = a.getInteger(R.styleable.TextAlphaSquareTextView_textAlpha, 100);
isSquare = a.getBoolean(R.styleable.TextAlphaSquareTextView_squareMode, false);
a.recycle();
if(mTextAlpha < 0 || mTextAlpha > 100)
throw new IllegalArgumentException("Alpha range should be b/w 0 to 100 (in percentage)");
else {
setAlphaOnTextColor();
}
}
setText(getText());
}
void setAlphaOnTextColor() {
int alpha = ((255 * mTextAlpha) / 100);
setTextColor(getTextColors().withAlpha(alpha));
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (isSquare) {
int width = this.getMeasuredWidth();
int height = this.getMeasuredHeight();
int size = Math.max(width, height);
int widthSpec = MeasureSpec.makeMeasureSpec(size, MeasureSpec.EXACTLY);
int heightSpec = MeasureSpec.makeMeasureSpec(size, MeasureSpec.EXACTLY);
super.onMeasure(widthSpec, heightSpec);
}
}
}
you need to call super.onMeasure() again with EXACT spec and the calculated size, since setMeasureDimension() seems to be ignoring the gravity.
For Android Image View .. how to scale 1081*373 Image Button to match the width of Image View and be fixed height ??
i tried match parent for width if image button but it' details not appear ... look like Zoomed image ?? and can't use Gravity ??
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/mainempty"
/>
<ImageButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/about"
/>
Try it!
public class MyBanner extends ImageView {
public MyBanner(Context context) {
super(context);
}
public MyBanner(Context context, AttributeSet attrs) {
super(context, attrs);
}
public MyBanner(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
#Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = width * 373 / 1081;
setMeasuredDimension(width, height);
}
}
in xml
<your.package.MyBanner
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/about"/>
I am using a PercentRelativeLayout with multiple children inside of it
I want some of the children to have the same height as its parent
The parent's height should be "wrap_content"
Here is an oversimplified example, that does not work:
<android.support.percent.PercentRelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/red"
>
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="Label1 \n Line2 \n Line3"
android:background="#color/green"
/>
<TextView
android:id="#+id/text2"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#color/blue"
android:layout_alignParentRight="true"
android:text="Label2 with\n two lines"/>
</android.support.percent.PercentRelativeLayout>
What will be the simplest way to solve this problem?
As a workaround I did the following, please comment if this is ok to do (changing the children height in onMeasure)
public class PercentageRelativeLayout extends PercentRelativeLayout
{
public PercentageRelativeLayout(Context context) {
super(context);
}
public PercentageRelativeLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
public PercentageRelativeLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if(getLayoutParams().height == LayoutParams.WRAP_CONTENT) {
ArrayList<ViewGroup.LayoutParams> modifiedLayouts = new ArrayList<>();
for (int i = 0; i < getChildCount(); i++) {
View child = getChildAt(i);
if (child.getLayoutParams().height == LayoutParams.MATCH_PARENT) {
child.getLayoutParams().height = LayoutParams.WRAP_CONTENT;
modifiedLayouts.add(child.getLayoutParams());
}
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if(modifiedLayouts.size() > 0) {
int heightHint = getMeasuredHeight();
if(heightHint > 0) {
getLayoutParams().height = heightHint;
}
for (ViewGroup.LayoutParams params : modifiedLayouts)
params.height = LayoutParams.MATCH_PARENT;
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
return;
}
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
I dont know to add more listview inside one page layout (attach picture)
I want Each ListView is not scrolling. Page layout is scrolling only.
Help me!!
Build same home layout app: https://play.google.com/store/apps/details?id=com.google.android.youtube
Answer
I had resolve this problem
Step1: Make new file java:
public class ExpandableHeightListview extends ListView {
boolean expanded = false;
public ExpandableHeightListview(Context context)
{
super(context);
}
public ExpandableHeightListview(Context context, AttributeSet attrs)
{
super(context, attrs);
}
public ExpandableHeightListview(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.
// But do not use the highest 2 bits of this integer; those are
// reserved for the MeasureSpec mode.
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, 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;
}
}
Step2: Java: Replace all ListView ->ExpandableHeightListview, and set listview.setExpanded(true);
Step3: layout xml: Replace
<yourpackage.ExpandableHeightListview
android:id="#+id/etResponse"
android:layout_width="match_parent"
android:layout_weight="1"
android:layout_height="300dp"
android:scrollbars="none"
android:orientation="vertical"
android:fadingEdge="none">
</yourpackage.ExpandableHeightListview>
Step4: Done!
You can calculate height of listview belong to number item in this. Here is example :
public class ExpandedListView extends ListView {
private android.view.ViewGroup.LayoutParams params;
private int old_count = 0;
public ExpandedListView(Context context, AttributeSet attrs) {
super(context, attrs);
}
#Override
protected void onDraw(Canvas canvas) {
if (getCount() != old_count) {
old_count = getCount();
params = getLayoutParams();
if (getChildAt(0)!= null){
params.height = getCount() * (old_count > 0 ? (getChildAt(0).getHeight()) : 0) ;
}else
params.height = 0;
setLayoutParams(params);
requestLayout();
}
super.onDraw(canvas);
}
}
And use it in xml like this :
.......
<your package.ExpandedListView
android:id="#+id/lv1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="none" />
<your package.ExpandedListView
android:id="#+id/lv2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="none" />
....
Note This solution will fix the height of listView.
You need to set the height of each ListView. Lets say 30dp also give layout_weight="1" Here is example LinearLayout nested inside ScrollView
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<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">
<ListView
android:id="#+id/lastest"
android:layout_marginTop="10sp"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="30dp" />
<ListView
android:id="#+id/featured"
android:layout_marginTop="10sp"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="30dp" />
<ListView
android:id="#+id/startup"
android:layout_marginTop="10sp"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="30dp" />
</LinearLayout>
</ScrollView>
Hope it helps
Please use custom Listview:
public class ExpandableHeightListview extends ListView
{
boolean expanded = false;
public ExpandableHeightListview(Context context)
{
super(context);
}
public ExpandableHeightListview(Context context, AttributeSet attrs)
{
super(context, attrs);
}
public ExpandableHeightListview(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.
// But do not use the highest 2 bits of this integer; those are
// reserved for the MeasureSpec mode.
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, 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;
}
}
in .xml file:
<yourpackagename.ExpandableHeightListview
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/White"
android:scrollbars="none"
android:orientation="vertical"
android:fadingEdge="none">
</cyourpackagename.ExpandableHeightListview>
I made a custom Viewgroup which i need to use in my application, but i need to put it in a ScrollView. When the layout is made only with my custom ViewGroup everything works fine, but when I put it in a ScrollView i can't see anything.
My layout:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<com.example.test.CustomLayout
android:id="#+id/layout"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</com.example.test.CustomLayout>
</ScrollView>
My viewgroup:
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
/* do something and call for each child
View v = getChildAt(i);
v.measure(wspec, hspec);
*/
setMeasuredDimension(getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec), getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec));
}
protected void onLayout(boolean changed, int l, int t, int r, int b) {
// TODO Auto-generated method stub
//do something and call layout on every child
}
UPDATE:
My CustomLayout class
public class CustomLayout extends ViewGroup{
/*My params*/
public CustomLayout(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
public CustomLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CustomLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
#Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
// TODO Auto-generated method stub
//do something and call layout on every child
}
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
/* do something and call for each child
View v = getChildAt(i);
v.measure(wspec, hspec);
*/
setMeasuredDimension(getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec), getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec));
}
}
UPDATE 2:
Sorry but I made some other tries and it looks like if I have the viewgroup in a scrollview on the onMeasure method i got heightMeasureSpec = 0, then if I put the viewgroup in any other layout, i got an integer. Maybe this would help?
I got it, I had to measure the Viewgroup myself, or else i got no height at all.
So:
int heightMeasured = 0;
/*for each child get height and
heightMeasured += childHeight;*/
//If I am in a scrollview i got heightmeasurespec == 0, so
if(heightMeasureSpec == 0){
heightMeasureSpec = MeasureSpec.makeMeasureSpec(heightMeasured, MeasureSpec.AT_MOST);
}
setMeasuredDimension(getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec), getDefaultSize(this.getSuggestedMinimumHeight(), heightMeasureSpec));
Now for me it works.
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
try to change android:layout_height to match_parent
You're using wrap_content for the height:
<com.example.test.CustomLayout
android:id="#+id/layout"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
Which would resolve to 0px afaik as there is no content - try giving you're component a default minimum height
Check this would work perfect!
public class MaxHeightScrollView extends ScrollView {
public static int DEFAULT_MAX_HEIGHT = -1;
private int maxHeight = DEFAULT_MAX_HEIGHT;
public MaxHeightScrollView(Context context) {
super(context);
}
public MaxHeightScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray a = context.getTheme().obtainStyledAttributes(
attrs,
R.styleable.ScrollMaxHeight,
0, 0);
try {
setMaxHeight(a.getInt(R.styleable.ScrollMaxHeight_maxHeight, 0));
} finally {
a.recycle();
}
}
public MaxHeightScrollView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
try {
int heightSize = MeasureSpec.getSize(heightMeasureSpec);
if (maxHeight != DEFAULT_MAX_HEIGHT
&& heightSize > maxHeight) {
heightSize = maxHeight;
heightMeasureSpec = MeasureSpec.makeMeasureSpec(heightSize, MeasureSpec.AT_MOST);
getLayoutParams().height = heightSize;
} else {
heightMeasureSpec = MeasureSpec.makeMeasureSpec(heightSize, MeasureSpec.AT_MOST);
setMeasuredDimension(getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec)
, getDefaultSize(this.getSuggestedMinimumHeight(), heightMeasureSpec));
}
} catch (Exception e) {
e.printStackTrace();
} finally {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public void setMaxHeight(int maxHeight) {
this.maxHeight = maxHeight;
}
}
make attr.xml in values folder and add below code
<resources>
<declare-styleable name="ScrollMaxHeight">
<attr name="maxHeight" format="integer"/>
</declare-styleable>
</resources>
Use like this
<com.yourapppackage.customviews.MaxHeightScrollView
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"
app:maxHeight="200"
android:fadeScrollbars="false"
android:gravity="center_horizontal">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
...........
............
</LinearLayout>
</com.yourapppackage.customviews.MaxHeightScrollView>
You are also using this contructor below, right? Because this is the one get called when you create your view in xml.
public CustomLayout(Context context, AttributeSet attrs) {
super(context, attrs);
// Do your stuff
}