There is a frame layout on my screen (see code below). This layout consists of 2 layers. The first layer is LinearLayout with several views and its height = "wrap_content". The second is ProgressBar with "fill_parent". I need the progressbar to stretch itself to the linear layout's height, but now it doesn't consider linear layout's height.
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ProgressBar
android:id="#+id/progress"
android:indeterminateOnly="false"
android:progressDrawable="#drawable/progressbar_drawable"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#drawable/file_item_background">
---
</LinearLayout>
</FrameLayout>
Instead of a FrameLayout, try a RelativeLayout.
You can then set android:layout_alignTop and android:layout_alignBottom on your ProgressBar to match the LinearLayout's height like so:
<ProgressBar
android:id="#+id/progress"
android:indeterminateOnly="false"
android:progressDrawable="#drawable/progressbar_drawable"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/my_linear_layout"
android:layout_alignBottom="#+id/my_linear_layout" />
<LinearLayout
android:id="#+id/my_linear_layout"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#drawable/file_item_background">
---
</LinearLayout>
Another option would be to manually adjust the height in code.
In general, you want to use a RelativeLayout if your layout requirements call for a position or a size relative to another view.
Related
I have a linear layout inside a relative layout, and I want to make the buttons 'taller' to fit the height of the linear layout.
I tried adding padding, as you can see in the screenshot, the layout is 'taller' but the buttons are not. I tried 'fill_parent', 'match_parent' but it didn't make a difference. How do I make the buttons expand in height?
<RelativeLayout 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:id="#+id/timerLayout">
<Chronometer
android:id="#+id/chronometer1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="48dp"
android:text="#string/chronometer"
android:textSize="50sp" />
<LinearLayout
android:id="#+id/buttonLayout"
android:orientation="horizontal"
android:paddingLeft="4.0dp"
android:paddingTop="50.0dp"
android:paddingRight="4.0dp"
android:paddingBottom="4.0dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<Button
android:id="#+id/btnReset"
android:layout_width="0.0dp"
android:layout_height="fill_parent"
android:drawableLeft="#drawable/ic_restore_white_24dp"
android:drawableStart="#drawable/ic_restore_white_24dp"
android:text="#string/pause_btn"
android:layout_weight="1.5" />
<Button
android:id="#+id/btnStart"
android:layout_width="0.0dp"
android:layout_height="fill_parent"
android:text="#string/start_btn"
android:drawableLeft="#android:drawable/ic_media_play"
android:drawableStart="#android:drawable/ic_media_play"
android:layout_weight="1.5" />
<Button
android:id="#+id/btnSave"
android:layout_width="0.0dp"
android:layout_height="fill_parent"
android:text="#string/save_btn"
android:drawableLeft="#drawable/ic_save_white_24dp"
android:drawableStart="#drawable/ic_save_white_24dp"
android:layout_weight="1.0" />
</LinearLayout>
The extra space you are seeing is from the padding values in your linear layout, and your buttons are already filling the parent linear layout. But your linear layout has specified the following.
android:layout_height="wrap_content"
If you want to see buttons with a larger height, change the height value for your linear layout to something else like:
android:layout_height="300dp"
your linearlayout says height:wrap_content
so the child elements will takeup only as much space as specified.
Try giving either minHeight for linearlayout or simply remove linearlayout and in your buttons specifiy "alignparentbottom = true".
For left-most button give alignparentStart = true.
Take a look at your xml layout file very closely
<LinearLayout
android:id="#+id/buttonLayout"
android:orientation="horizontal"
android:paddingLeft="4.0dp"
android:paddingTop="50.0dp" //this guy
android:paddingRight="4.0dp"
android:paddingBottom="4.0dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
the android:paddingTop is the space on the top of every child in your LinearLayout so if you remove it the buttons will fit.
I am building an android application and I have a dialog fragment. The dialog fragment has a set width. However, the issue is that when the app is run on a device with a different screen size, the dialog fragment isn't centered properly.
Initially, what I had was:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="500dp"
android:layout_height="wrap_content">
<-- code goes here -->
</RelativeLayout>
As you can see, I have a relativeLayout with a defined width. Since I know that you can't use layout_weight in a relative layout, what I did was I wrapped that parent relative layout in a linear layout as such:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.8"
android:weightSum="1">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</RelativeLayout>
</LinearLayout>
However, that doesn't work since the dialog fragment is cut when I run the application on a device with smaller screen size.
How can I set the width a dialog fragment as a percentage of the screen size? Is this possible at all or would I have to resort to setting it programmatically?
This is a correct way, if you want RelativeLayout have 40% width of the screen, but this technique cant apply to the parent layout, because parent layout doesn't have parent layout and android:layout_weight doesn't affect
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="100">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="40">
</RelativeLayout>
Since I know that you can't use layout_weight in a relative layout
We can use layout_weight in any view and layout, if it direct child of a LinearLayout
With the new percent support library, you can now use a PercentRelativeLayout.
Check out this link
The code below will make relative layout 1/2 of the parent and will position it horizontally centered:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal">
<RelativeLayout
android:layout_width="0dp"
android:layout_weight="0.5"
android:layout_height="wrap_content">
</RelativeLayout>
</LinearLayout>
Hope it helps.
I have a CircularMeter class which is derived from Button. The problem is that it is not resizing even if the weight given is 0.5 (ie. half the vertical screen).
<LinearLayout
android:id="#+id/WidgetDataLayout"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_alignParentTop="true"
android:layout_weight="0.5"
android:orientation="vertical"
android:layout_gravity="center_horizontal">
<com.test.CircularMeter
android:id="#+id/cm1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal" />
</LinearLayout>
Any Ideas ?
You can take help from this example to make your circularmeter fill half of the vertical screen
eg.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:weightSum="1">
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:layout_weight="0.5"
android:background="#123456"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#123456"
android:text="#string/hello_world" />
</LinearLayout>
</LinearLayout>
There's no layout_weight in CircularMeter.
It's parent LinearLayout has both android:layout_alignParentTop="true" and android:layout_weight="0.5" which is not correct since layout_alignParentTop is a layout attribute for a RelativeLayout parent while android:layout_weightis an attribute for a LinearLayout parent. The layout XML does not show what is the parent layout actually is. android:layout_height="0dp" would make the layout invisible unless there really is a vertical LinearLayout as a parent.
Also note that layout_weight="0.5" won't make the view size half the screen. After doing first pass layout for a linear layout, the weight mechanism just distributes any remaining space in proportion of element weights. By default an element's weight is 0. So if you have just one element with non-zero weight, it will get all remaining space in its linear layout parent.
I want to set the width of a LinearLayout to half of the screen width dynamically in my UI initialization. I have a RelativeLayout wrapped around the LinearLayout, the hierarchy is the following:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:id="#+id/left_linear_layout"
android:layout_alignParentLeft="true"
android:layout_height="fill_parent"
android:layout_width="155dp" <!--want to set this to 1/2 screen width-->
android:orientation="vertical">
...
</LinearLayout>
<LinearLayout
android:id="#+id/right_linear_layout"
android:layout_alignParentRight="true"
android:layout_height="fill_parent"
android:layout_width="385dp"><!--want to set this relative to screen width as well-->
....
</LinearLayout>
</RelativeLayout>
Alternatively, can this problem be solved using View instead of Layout? Any suggestion is appreciated!
You can do this by using layout_weight, but you'll need to add some invisible views for padding. For instance the following would make your top panel half the screen width:
<RelativeLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout
android:id="#+id/left_linear_layout"
android:layout_alignParentLeft="true"
android:layout_height="fill_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:orientation="vertical"
>
...
</LinearLayout>
<!-- need this view to fill the other half of the screen -->
<View
android:id="#+id/spacer"
android:layout_toRightOf="#id/left_linear_layout"
android:layout_height="fill_parent"
android:layout_width="0dp"
android:layout_weight="1"
/>
....
</RelativeLayout>
The amount each view will take up is layout_weight/total_layout_weight. In this case total_layout_weight = 1+1 = 2 and each view has a layout_weight of 1, so each view takes up 1/2 of the screen.
You could simply use a LinearLayout as your top-level layout, and then set the weight of the two child layouts.
I have a relative layout and in that I have 4 imageViews stacked one on the top of another.
I have a set of layout like this, where I have a Linear Layout and a Relative layout on one on top of another.
<LinearLayout android:layout_width="fill_parent" android:layout_height="0dip" android:layout_weight="1.0" android:background="#5500FF00"
android:orientation="vertical" android:gravity="center_horizontal|bottom" android:paddingBottom="3dip">
<include layout="#layout/app_tax_coin_subsection"/>
</LinearLayout>
In the linear layout I am including another relative layout from another xml file which has a number of boxes on top of one another..
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="#+id/app_income_coin_id"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="#drawable/box_red"
android:id="#+id/box1" android:layout_centerHorizontal="true" android:layout_alignParentBottom="true" android:visibility="visible"/>
<ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="#drawable/box_red"
android:layout_above="#id/box1" android:layout_centerHorizontal="true" android:id="#+id/box2" android:visibility="visible"/>
<ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="#drawable/box_red"
android:layout_above="#id/box2" android:layout_centerHorizontal="true" android:id="#+id/box3" android:visibility="visible"/>
<ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="#drawable/box_red"
android:layout_above="#id/box3" android:layout_centerHorizontal="true" android:id="#+id/box4" android:visibility="visible"/>
</RelativeLayout>
The above code working correctly and I am getting 4 lovely red boxes one on top of another. Now I want to reduce the size and width of the relative layout and I want these boxes to reduce size as well. In short what can I do to make the content imageView to resize(even to a size smaller than the original image size) along with its parent layout?
The layout height and width of the RelativeLayout are FILL_PARENT so they will take up the full screen. You can start by setting an absolute height/width in dps, the ImageViews will scale down to fit the parent.