Here is the XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/bg"
>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="4"
android:orientation="vertical"
>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_horizontal" //CENTER 01
>
<!--center button-->
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/img"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" //CENTER 02
/>
//...
</RelativeLayout>
</LinearLayout>
<include android:id="#+id/banner" layout="#layout/banner"
android:layout_weight="1"
android:layout_gravity="bottom"/>
</LinearLayout>
The center button is centered, but not in the real center of the screen, but rather approx 50px to the right of the center. If I remove centerHorizontal CENTER01, then this does not happen.
Does anyone know why is this happening?
Please try for //CENTER 02:
android:layout_centerInParent="true"
This issue may be due to using of both Relative Layout and Linear Layout inside a xml file.
Change all Linear Layout to Relative Layouts so that Image View will be centered as you expected.
I too mingled both Linear Layout and Relative Layout in single XML and faces this kind of issue. Once i replaces all Linear Layout to Relative Layout my problem Resolved.
Try it.Thanks.Venky
Its because in Relative Layout center_horizontal isn't the command. that works for views wrapped in linear Layout. for RelativeLayout you need to use
android:layout_centerInParent="true";
as the center gravity command in linear
or
android:layout_centerHorizontal="true"
as the gravity center_horizontal in linear.
When you set android:gravity="center_horizontal" on a parent, it influences the behaviour of its children. Hence, your ImageView gets effected, creating the effect you see after already being placed in the center by other properties.
You can see this effect for yourself by placing a TextView in there with android:layout_width="fill_parent".
Related
when I remove gravity attribute then the image will set on top corner right but when it used it leave padding at the top why gravity leaves space ????
enter image description here
android:gravity="center" ---> center_horizontal+center_vertical
The center_vertical attribute leaves the padding at the top. Changing it to center_horizontal will make the view/views just align center horizontally so use
android:gravity="center_horizontal"
I think why should you use layout_marginTop in imageview?it's not necessory to set.you can set layout_gravity at imageview and remove gravity at top linear layout.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/black">
<ImageView
android:layout_width="wrap_content"
android:layout_height="200dp"
android:src="#drawable/android_ic"
android:layout_gravity="center"
/>
</LinearLayout>
When you have added android:gravity="center" your entire layout will be at center of the screen.Since you have added multiple views below the imageView, it has been managed to be at the top with some space.Change it to android:gravity="center_horizontal" and also if the image is small set the height as "wrap_content" instead of 200dp ,it may also have additional space.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="200dp"
android:src="#drawable/coffee"
/></LinearLayout>
I wanna implement the horizontal layout with fixed layout that is positioned at center. But the problem is that when i kept the layout at the center the horizontal scrollview child layout will be overlap by the fixed layout that i have kept on center. How to separate the space on horizontal scroll view so that while scrolling the scrollview child will jump the the space that we have define and position at the right and left of the center layout.
How can it be possible? Please Give some idea. Happy if you provide me code. Hope with positive response.
Try to use FrameLayout:
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:background="#color/main_background"
android:layout_height="wrap_content">
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"></HorizontalScrollView>
<ImageView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
app:srcCompat="#android:drawable/ic_delete" />
</FrameLayout>
Hope this may help.
You can make use of FRAME layout, keep imageview gravity at center - rest of the horizontal scrollview as it is.
For reference check the below code
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"></HorizontalScrollView>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#android:drawable/ic_delete" />
</FrameLayout>
i have an imageview on a relative layout.
You can see in the screenshot :
How can i move the imageview(the weel) in the bottom-right corner, but display only 25 % part of it, like in the follow picture:
Thanks in advance !
<?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"
android:background="#E0E0E0"
>
<com.androidsources.welcomescreen.MyRecyclerView
android:foreground="?android:attr/selectableItemBackground"
android:clickable="true"
android:id="#+id/cardList"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<com.anupcowkur.wheelmenu.WheelMenu
android:id="#+id/wheelMenu"
android:layout_width="300dp"
android:layout_height="300dp"
android:src="#drawable/wheel"/>
</RelativeLayout>
You can try something like this:
<com.anupcowkur.wheelmenu.WheelMenu
android:id="#+id/wheelMenu"
android:layout_width="300dp"
android:layout_height="300dp"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:paddingLeft="150dp"
android:paddingTop="150dp"
android:src="#drawable/wheel"/>
alignParentRight and alignParentBottom attributes will move your widget at the right bottom corner. Also try to change padding to achieve desired visual effect.
I know that there is already an answer, but for those who can't make the accepted answer work here is an alternative.
For some reason, I can't place part of the view outside the parent if I'm using RelativeLayout but when I tried LinearLayout it worked. So the solution I used is to enclose the view in a LinearLayout then position the LinearLayout on bottom-end of the parent.
<LinearLayout
android:layout_width="300dp"
android:layout_height="300dp"
android:orientation="horizontal"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true">
<ImageView
android:layout_width="300dp"
android:layout_height="300dp"
android:src="#drawable/some_pic"
android:layout_marginStart="150dp"
android:layout_marginTop="150dp"/>
</LinearLayout>
Note the width and height of the image is not match_parent, using match_parent will shrink the image not displace it.
In a RelativeLayout if a view has android:layout_alignParentBottom="true” then it is placed to the bottom of the parent.
If 2 views have android:layout_alignParentBottom="true” then both are placed on the bottom, but 1 above the other.
How can I have 2 view to have the setting android:layout_alignParentBottom="true” and one to be stacked over the other?
android:layout_above seems to be not applicable/working for this case.
Put the views inside a LinearLayout with orientation - vertical, and put
layout_alignParentBottom=true
To the LinearLayout;
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:background="#color/black"
android:layout_height="match_parent">
<LinearLayout
android:layout_alignParentBottom="true"
android:background="#color/red"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</RelativeLayout>
layout_above means "above" in a Y direction, not in a Z direction, if that makes sense. If you want them to overlay, remove the layout_above attribute and make them both layout_alignParentBottom=true.
They won't be placed one after another if you have set only android:layout_alignParentBottom="true”. Please paste your layout xml so that the real issue can be found.
I have the following structure defined in an xml layout file.
<RelativeLayout android:id="#+id/mainLayout"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content" android:layout_height="wrap_content">
<FrameLayout android:id="#+id/frame" android:layout_centerInParent="true" android:layout_width="wrap_content" android:layout_height="wrap_content" ></FrameLayout>
<Button android:id="#+id/button" android:layout_below="#id/frame" android:layout_width="wrap_content" android:layout_height="wrap_content" />
</RelativeLayout>
The FrameLayout is positioned correctly in the center of its parent. But the Button isn't getting positioned under it. Instead it's displaying in the top left corner.
Am I doing something incorrectly or is this a bug with RelativeLayout?
How have you checked whether frame layout is in the center of parent or not ?
Try adding some view inside frame layout or give some fix height and width to it. It might solve the problem.