Wrap_content doesn't work on RelativeLayout : Action bar custom View

Wrap_content doesn't work on RelativeLayout : Action bar custom View - android

I have created a custom layout for the Action Bar : which I add with this code on my Activity :
LayoutInflater inflater = (LayoutInflater)getSystemService (Context.LAYOUT_INFLATER_SERVICE);
View actionBarView = inflater.inflate (R.layout.main_actionbar, null);
getSupportActionBar ().setCustomView (actionBarView);
and the main_actionbar.xml layout :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:style="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white" >
<RelativeLayout
android:id="#+id/leftIcons"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_toLeftOf="#+id/empty"
android:paddingTop="4dp"
android:paddingBottom="4dp"
android:background="#drawable/uiclickable_gray_states"
android:layout_alignParentLeft="true" >
<ImageView
android:id="#+id/back"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:layout_marginRight="5dp"
android:src="#drawable/icon_back" />
<!-- The problem is here -->
<ImageView
android:id="#+id/thumbnail"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_toRightOf="#+id/back"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:src="#drawable/bg"
android:scaleType="fitXY"
android:adjustViewBounds="true" />
</RelativeLayout>
<View
android:id="#+id/empty"
android:layout_width="100dp"
android:layout_height="match_parent"
android:background="#color/black_transparent"
android:layout_alignParentRight="true" />
</RelativeLayout>
My problem is that I would like the #+id/thumbnail to have it's height as match_parent and have it's width equals the height. means : height == match_parent AND width == height, so I can have a square Image.
it appears that this cannot be done by xml, so I created (with the help of some tutorials on the net) a subclass of ImageView and did this but without any positive results :
#Override
protected void onMeasure (int widthMeasureSpec, int heightMeasureSpec) {
//int width = measureWidth (widthMeasureSpec);
int height = measureHeight (heightMeasureSpec);
setMeasuredDimension (height, height);
}
private int measureHeight (int measureSpecHeight) {
int result;
int specMode = MeasureSpec.getMode (measureSpecHeight);
int specSize = MeasureSpec.getSize (measureSpecHeight);
if (specMode == MeasureSpec.EXACTLY) {
// We were told how big to be
result = specSize;
} else if (specMode == MeasureSpec.AT_MOST) {
// The child can be as large as it wants up to the specified size.
result = specSize;
} else {
// Measure the text (beware: ascent is a negative number)
result = canvasSize;
}
return (result + 2);
}
Am I doing something wrong there ? Thank you.

Related

Get child view size within onMeasure

I have listView with items created dynamicaly.Each item is my custom view and contains(from top to bottom) header,imageView and footer.I set item's height in the onMeasure method.I'd like imageView's height to be exactly
image_height=item_height-(footer_height+header_height)
I set footer/header height in the xml(constant value)
However when I try to get footer/header height it returns 0
#Override
public void onMeasure(int widthSpec, int heightSpec) {
super.onMeasure(widthSpec,heightSpec);
int widthMode = MeasureSpec.getMode(widthSpec);
int widthSize = MeasureSpec.getSize(widthSpec);
int heightMode = MeasureSpec.getMode(heightSpec);
int heightSize = MeasureSpec.getSize(heightSpec);
//float ar=896f/768f;
int itemWidth=widthSize/IMGS_PER_ROW;
int calculated_width =widthSize;
int calculated_height = (int) (itemWidth*(1/IMG_ASPECT_RATIO));
if(!initialized) {
Image img=new Image(this.getContext());
int dy=((ImageView)this.findViewById(R.id.separator)).getHeight();//returns 0
Log.d("item",calculated_width+","+calculated_height+","+dy);
initialized=true;
}
this.setMeasuredDimension(calculated_width, calculated_height);
}
Item layout:
<?xml version="1.0" encoding="utf-8"?>
<com.rhyboo.net.listtest.ListItemView 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">
<TextView
android:text="Title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/title_text"
android:gravity="left"
android:textSize="24sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:id="#+id/items_container"
android:layout_marginBottom="30dp"
android:layout_marginTop="30dp">
</LinearLayout>
<ImageView
android:layout_width="match_parent"
android:layout_height="30dp"
app:srcCompat="#color/colorAccent"
android:id="#+id/separator"
android:layout_gravity="bottom" />
</com.rhyboo.net.listtest.ListItemView>

Android image background height

I write this code:
android:background="#drawable/back"
this code load the image and set the full screen modebut i want set to the 70% of screen heightHow can i do this?

My This is helpful to you:
Make android:layout_height="0dp" and android:layout_weight="0.70" of ImageView, other Invisible View for 30%.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/layoutexample"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageView
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="0.70"
android:src="#drawable/ic_launcher" />
<View
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="0.30"
android:visibility="invisible" />
</LinearLayout>

public static int width = 0, height = 0;
/* GET WIDTH AND HEIGHT OF SCREEN */
if (width == 0 && height == 0) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
w.getDefaultDisplay().getSize(size);
width = size.x;
height = size.y;
} else {
Display d = w.getDefaultDisplay();
width = d.getWidth();
height = d.getHeight();
}
}
here u can get device height and width set 70% like this
RelativeLayout.LayoutParams mPar = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, (int) (height*0.70));

ImageView height is always 0

I am trying to get the height and width of my imageview so I can scale my image down the the appropriate size but everytime I try to get the height I get the height as 0. I thought maybe it just was not measured yet so I put a onPreDrawListener on the imageview so that I know it would be measured at that time but I still get 0 so I am not sure the problem.
this is my full layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:id="#+id/content"
android:layout_above="#+id/comment_layout">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/imageView"/>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/comments"
android:background="#android:color/transparent"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/comment_layout">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/editText"
android:layout_alignParentBottom="true"
android:layout_toLeftOf="#+id/send_button"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/send_button"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"/>
</RelativeLayout>
</RelativeLayout>
here is where I try to get the height
ViewTreeObserver obs = imageView.getViewTreeObserver();
if(obs != null){
obs.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
#Override
public boolean onPreDraw() {
if(image != null){
imageView.getViewTreeObserver().removeOnPreDrawListener(this);
int height = imageView.getHeight(); // 0
int width = imageView.getWidth(); // 720
}
return false;
}
});
}
the width displays 720 but the height always displays 0.
putting in a hard width also has no effect

This should work with an OnGlobalLayoutListener like so
final ImageView image = new ImageView(this);
image.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
// TODO Auto-generated method stub
int height = image.getHeight();
}
});
This callback is invoked when the global layout state or the visibility changes

I want to set max height in dialog fragment

<?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:orientation="vertical"
android:minWidth="#dimen/dialog_min_width"
android:padding="#dimen/dialog_padding"
android:background="#drawable/dialog_background" >
<TextView android:id="#+id/base_dialog_title"
style="#style/DialogTitleTextViewStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:gravity="center" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="16dp" >
</FrameLayout>
<!-- *********************** HERE ************************* -->
<FrameLayout android:id="#+id/base_dialog_content"
android:background="#drawable/dialog_description_background"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</FrameLayout>
<!-- *********************** HERE ************************* -->
<FrameLayout
android:layout_width="match_parent"
android:layout_height="16dp" >
</FrameLayout>
<LinearLayout android:id="#+id/base_dialog_button_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="horizontal">
<Button
android:id="#+id/base_dialog_button_negative"
style="?android:attr/buttonStyleSmall"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:visibility="gone"/>
<Button
android:id="#+id/base_dialog_button_neutral"
style="?android:attr/buttonStyleSmall"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:visibility="gone"/>
<Button
android:id="#+id/base_dialog_button_positive"
style="?android:attr/buttonStyleSmall"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:visibility="gone"/>
</LinearLayout>
</LinearLayout>
This is dialog fragment layout.
I add content view (TextView or ListView) into FrameLayout (#id/base_dialog_content)
When ListView has many Items, Dialog is full height in window.
I want to set maximum height dialog or content view (or list view)
Edit:
I solve the problem using OnLayoutChangeListener.
But I need same function in lower version (below HoneyComb)
In DialogFragment.onCreateView()
FrameLayout contentContainer = (FrameLayout) view.findViewById(R.id.base_dialog_content);
final View contentView = createContentView(inflater, contentContainer);
contentContainer.addView(contentView);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
// TODO Check content view height and change height
} else {
view.addOnLayoutChangeListener(new OnLayoutChangeListener() {
#Override
public void onLayoutChange(View v, int left, int top, int right,
int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {
int height = v.getHeight();
int contentHeight = contentView.getHeight();
int winHeight = ActivityUtil.getDisplayHeight(getSherlockActivity());
LogUtils.pe(height+" / "+winHeight+" / "+contentHeight);
int needHeight = height - winHeight*8/10;
if (needHeight > 0) {
contentView.setLayoutParams(
new LayoutParams(LayoutParams.MATCH_PARENT, contentHeight-needHeight));
}
}
});
}

to control the maximum height you have to put the content view in one layout container first (Linear/Relative) let's say in my example I'll use linearlayout
to measure the screen height (I put it in Util.java ):
public static int getDisplayHeight(Context context) {
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
int height = display.getHeight();
return height;
}
after that you create a container :
LinearLayout llContainerContent = new LinearLayout(context);
LayoutParams lpContainerContent = new LayoutParams(LayoutParams.FILL_PARENT, (Util.getDisplayHeight(context) * 8) /10);
llContainerContent.setLayoutParams(lpContainerContent);
after that you add the textview/listview to the container then you add the container to the framelayout. I hope my answer is clear enough for you but if you have another question please feel free to ask in the comment :)

Use this code for full screen height and width for the dialog
WindowManager window = (WindowManager)context
.getSystemService(Context.WINDOW_SERVICE);
Display display = window.getDefaultDisplay();
displayheight = display.getHeight();
displaywidth = display.getWidth();
dialog.getWindow().setLayout(displaywidth ,
displayheight );

what about using the onResume to get it done:
override fun onResume() {
super.onResume()
val width = (resources.displayMetrics.widthPixels * 0.95).toInt()
val height = (resources.displayMetrics.heightPixels * 0.60).toInt()
dialog?.window?.setLayout(width, height)
}

Android: can height of SlidingDrawer be set with wrap_content?

I'm trying to implement a SlidingDrawer that will occupy the full screen width, but whose height is determined dynamically by its contents: in other words, standard fill_parent layout behaviour for the width and wrap_content for the height. That's exactly how I've specified it in the layout XML (see below) but the sliding drawer always opens to the full screen height. The height of my content varies, but typically it's only about half the screen height, so I end up with a big gap underneath it. What I'd like is for the content to sit neatly on the bottom of the screen.
I've tried everything I can think of to fix it but nothing's worked so far. If I set the SlidingDrawer's layout_height to a specific value (e.g. 160dip) it works, but that's not what I need: it has to be dynamic. Of course I've made sure all the child elements have their height set to wrap_content too.
The documentation on SlidingDrawer is a bit vague on this and I haven't been able to find any examples that do what I'm after either. If anyone can see where I'm going wrong I'd really appreciate your help!
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ViewFlipper
android:id="#+id/ImageFlipper"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ImageView
android:id="#+id/imageView0"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="centerCrop" />
<ImageView
android:id="#+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="centerCrop" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="centerCrop" />
</ViewFlipper>
<SlidingDrawer
android:id="#+id/infoDrawer"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:handle="#+id/infoDrawerHandle"
android:content="#+id/infoDrawerContent"
android:allowSingleTap="false"
android:layout_alignParentBottom="true"
android:orientation="vertical" >
<!-- Sliding drawer handle -->
<ImageView
android:id="#id/infoDrawerHandle"
android:src="#drawable/info_handle_closed"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<!-- Sliding drawer content: a scroller containing a group of text views
laid out in a LinearLayout -->
<ScrollView
android:id="#id/infoDrawerContent"
android:background="#drawable/info_background"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fillViewport="false" >
<LinearLayout
android:id="#id/infoDrawerContent"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingRight="5dip" >
<TextView
android:id="#+id/infoTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:textSize="16dip"
android:textStyle="bold" />
<TextView
android:id="#+id/infoCreator"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:textSize="14dip"
android:textStyle="italic"
android:paddingBottom="10dip" />
<TextView
android:id="#+id/infoDescription"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:textSize="14dip"
android:paddingBottom="10dip" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffcc00"
android:textSize="14dip"
android:textStyle="bold"
android:text="#string/heading_pro_tip" />
<TextView
android:id="#+id/infoProTip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffcc00"
android:textSize="14dip" />
</LinearLayout>
</ScrollView>
</SlidingDrawer>
</RelativeLayout>

The onMeasure() method of the SlidingDrawer class basically overrides the layout modes to fill_parent, this is why layout_height="wrap_content" is not working.
To get around this, you can extend SlidingDrawer with a re-implemented onMeasure() method that honors the layout_width and layout_height attributes. You can then use this custom class in your XML layout by replacing <SlidingDrawer ...> with <fully.qualified.package.ClassName ...>.
Note that since the drawer will no longer be filling the parent layout, you will have to enclose it in a LinearLayout with the gravity attribute set to the edge where the drawer should be.
Below are a class I have created for this purpose and an example layout.
WrappingSlidingDrawer class :
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.SlidingDrawer;
public class WrappingSlidingDrawer extends SlidingDrawer {
public WrappingSlidingDrawer(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
int orientation = attrs.getAttributeIntValue("android", "orientation", ORIENTATION_VERTICAL);
mTopOffset = attrs.getAttributeIntValue("android", "topOffset", 0);
mVertical = (orientation == SlidingDrawer.ORIENTATION_VERTICAL);
}
public WrappingSlidingDrawer(Context context, AttributeSet attrs) {
super(context, attrs);
int orientation = attrs.getAttributeIntValue("android", "orientation", ORIENTATION_VERTICAL);
mTopOffset = attrs.getAttributeIntValue("android", "topOffset", 0);
mVertical = (orientation == SlidingDrawer.ORIENTATION_VERTICAL);
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec);
int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec);
int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec);
if (widthSpecMode == MeasureSpec.UNSPECIFIED || heightSpecMode == MeasureSpec.UNSPECIFIED) {
throw new RuntimeException("SlidingDrawer cannot have UNSPECIFIED dimensions");
}
final View handle = getHandle();
final View content = getContent();
measureChild(handle, widthMeasureSpec, heightMeasureSpec);
if (mVertical) {
int height = heightSpecSize - handle.getMeasuredHeight() - mTopOffset;
content.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(height, heightSpecMode));
heightSpecSize = handle.getMeasuredHeight() + mTopOffset + content.getMeasuredHeight();
widthSpecSize = content.getMeasuredWidth();
if (handle.getMeasuredWidth() > widthSpecSize) widthSpecSize = handle.getMeasuredWidth();
}
else {
int width = widthSpecSize - handle.getMeasuredWidth() - mTopOffset;
getContent().measure(MeasureSpec.makeMeasureSpec(width, widthSpecMode), heightMeasureSpec);
widthSpecSize = handle.getMeasuredWidth() + mTopOffset + content.getMeasuredWidth();
heightSpecSize = content.getMeasuredHeight();
if (handle.getMeasuredHeight() > heightSpecSize) heightSpecSize = handle.getMeasuredHeight();
}
setMeasuredDimension(widthSpecSize, heightSpecSize);
}
private boolean mVertical;
private int mTopOffset;
}
Example layout (assuming WrappingSlidingDrawer is in package com.package) :
<FrameLayout android:layout_width="fill_parent"
android:layout_height="fill_parent">
... stuff you want to cover at full-size ...
<LinearLayout android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="bottom"
android:orientation="vertical">
<com.package.WrappingSlidingDrawer android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:content="#+id/content"
android:handle="#+id/handle">
... handle and content views ...
</com.package.WrappingSlidingDrawer>
</LinearLayout>
</FrameLayout>

just set to pmargin in sliding drawer in your xml
android:layout_marginTop="50dip"

seydhe's answer has a small issue.
The first argument to the getAttributeIntValue needs to be the full namespace, not just "android". So the code snippet should be:
final String xmlns="http://schemas.android.com/apk/res/android";
int orientation = attrs.getAttributeIntValue(xmlns, "orientation", SlidingDrawer.ORIENTATION_VERTICAL);
mTopOffset = attrs.getAttributeIntValue(xmlns, "topOffset", 0);
I was having trouble getting this to work with a horizontal sliding drawer until I realized that it was not finding the orientation attribute and was therefore treating it as vertical.

it is better to read the parameter without hardcoding the string:
int attrOrientation = android.R.attr.orientation;
int attrTopOffset = android.R.attr.topOffset;
int[] attrIds = new int [] {attrOrientation, attrTopOffset};
TypedArray a = context.obtainStyledAttributes(attrs, attrIds);
int orientation = a.getInt(0, SlidingDrawer.ORIENTATION_VERTICAL);
topOffset = a.getDimension(1, 0);
a.recycle();
isVertical = (orientation == SlidingDrawer.ORIENTATION_VERTICAL);
Another issus is in the onMeasure.
I used the following code:
if (isVertical) {
int height = heightSpecSize - handle.getMeasuredHeight() - topOffset;
getContent().measure(MeasureSpec.makeMeasureSpec(widthSpecSize, MeasureSpec.UNSPECIFIED), MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY));
heightSpecSize = handle.getMeasuredHeight() + topOffset + content.getMeasuredHeight();
widthSpecSize = content.getMeasuredWidth();
if (handle.getMeasuredWidth() > widthSpecSize) widthSpecSize = handle.getMeasuredWidth();
} else {
int width = widthSpecSize - handle.getMeasuredWidth() - topOffset;
getContent().measure(MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(heightSpecSize, MeasureSpec.UNSPECIFIED));
widthSpecSize = handle.getMeasuredWidth() + topOffset + content.getMeasuredWidth();
heightSpecSize = content.getMeasuredHeight();
if (handle.getMeasuredHeight() > heightSpecSize) heightSpecSize = handle.getMeasuredHeight();
}

unfortunately you can't set the height, but rather the opposite of that. the topOffset attribute will determine how tall to make the sliding drawer, but its what to shave off rather than how tall it will be.

It works for me:
private SlidingDrawer rightSlidingPanel = null;
#Override
public void onCreate( Bundle savedInstanceState )
{
...
rightSlidingPanel = (SlidingDrawer) findViewById( R.id.rightSlidingPanel );
rightSlidingPanel.post( new Runnable()
{
#Override
public void run()
{
rightSlidingPanel.getLayoutParams().width = findViewById( R.id.sliding_content2 ).getMeasuredWidth() + findViewById( R.id.sliding_handle ).getMeasuredWidth();
}
});
}
XML Layout:
...
<SlidingDrawer
android:id="#+id/rightSlidingPanel"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:allowSingleTap="true"
android:animateOnClick="true"
android:content="#+id/sliding_content"
android:handle="#+id/sliding_handle"
android:orientation="horizontal" >
<Button
android:id="#+id/sliding_handle"
style="#style/toolbar_button"
android:layout_width="30dp"
android:layout_height="wrap_content"
android:height="40dp"
android:text="<"
android:width="25dp" />
<LinearLayout
android:id="#+id/sliding_content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="top"
android:orientation="vertical" >
<LinearLayout
android:id="#+id/sliding_content2"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:gravity="center_horizontal" >
...
</LinearLayout>
</LinearLayout>
</SlidingDrawer>
...

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Wrap_content doesn't work on RelativeLayout : Action bar custom View - android

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ImageView height is always 0

I want to set max height in dialog fragment

Android: can height of SlidingDrawer be set with wrap_content?

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