I have a layout with several image and toggle buttons. How can I make them rotate to match the screen orientation? I do not with to rotate the layout, just these elements. Example: The screen is in portrait orientation, the buttons are perfectly vertically aligned. The device is rotated and switches to landscape orientation and so the buttons rotate to adapt to the users point of view. How can that effect be achieved? How can a degree rotation animation be linked not only to the element it affects, but also be orientation sensor sensitive?
You have to set "android:gravity to center".
The following layout will hekp for you:
<?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:gravity="center"
android:orientation="horizontal" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cool Button" />
</LinearLayout>
There are other ways to do it.
Using relative layout
Using 2 layouts : 1 one for portrait and and 1 for landscape.
Example for using two layouts:
XML file for portrait mode (found in the res/layout folder)
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/Apple"
android:text="Apple"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:padding="20dip"
android:layout_marginTop="20dip" />
<Button
android:id="#+id/Mango"
android:text="Mango"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:padding="20dip"
android:layout_marginTop="20dip" />
<Button
android:id="#+id/Banana"
android:text="Banana"
android:layout_width="300dip"
android:layout_height="wrap_content"
android:padding="20dip"
android:layout_marginTop="20dip" />
<Button
android:id="#+id/Grapes"
android:text="Grapes"
android:layout_width="300dip"
android:layout_height="wrap_content"
android:padding="20dip"
android:layout_marginTop="20dip" />
<Button
android:id="#+id/Kiwi"
android:text="Kiwi"
android:layout_width="300dip"
android:layout_height="wrap_content"
android:padding="20dip"
android:layout_marginTop="20dip" />
</LinearLayout>
We can see that five Button controls are vertically arranged in a LinearLayout container, one below the other. This vertical arrangement makes a few of the Button controls disappear when the screen is in Landscape mode.
To use the blank space on the right side of the screen in Landscape mode, we need to define another layout file, activity_screen_orientation_app.xml, created in the res/layout-land folder. The layout-land folder has to be created manually inside the res folder. Right-click on the res folder in the Package Explorer window and select the New, Folder option. A dialog box opens, asking for the name for the new folder. Assign the name layout-land to the new folder, and click the Finish button.
XM file for landscape mode (found in the res/layout-land folder)
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/Apple"
android:text="Apple"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:padding="20dip"
android:layout_marginTop="20dip" />
<Button
android:id="#+id/Mango"
android:text="Mango"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:padding="20dip"
android:layout_marginTop="20dip"
android:layout_toRightOf="#id/Apple" />
<Button
android:id="#+id/Banana"
android:text="Banana"
android:layout_width="250dip"
android:layout_height="wrap_content"
android:padding="20dip"
android:layout_marginTop="20dip"
android:layout_below="#id/Apple" />
<Button
android:id="#+id/Grapes"
android:text="Grapes"
android:layout_width="250dip"
android:layout_height="wrap_content"
android:padding="20dip"
android:layout_marginTop="20dip"
android:layout_below="#id/Apple"
android:layout_toRightOf="#id/Banana" />
<Button
android:id="#+id/Kiwi"
android:text="Kiwi"
android:layout_width="250dip"
android:layout_height="wrap_content"
android:padding="20dip"
android:layout_marginTop="20dip"
android:layout_below="#id/Banana" />
</RelativeLayout>
We can also detect the screen orientation via Java code. Let’s modify the activity file ScreenOrientationAppActivity.java to display a toast message when the screen switches between landscape mode and portrait mode.
package com.androidunleashed.screenorientationapp;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Toast;
public class ScreenOrientationAppActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_screen_orientation_app);
if(getResources().getDisplayMetrics().widthPixels>getResources().getDisplayMetrics().
heightPixels)
{
Toast.makeText(this,"Screen switched to Landscape mode",Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(this,"Screen switched to Portrait mode",Toast.LENGTH_SHORT).show();
}
}
}
Related
My application is intended to be used in portrait mode. The application itself is locked in landscape mode (in the manifest) because I am working with an OpenCV JavaCameraView.
I would like to position a row of buttons along the bottom edge of the screen (as the user sees it). This is the right-hand side of the screen, as the phone sees it. I've tried using a LinearLayout and playing around with the gravity settings, but this orientates the buttons so that the text is facing according to the landscape orientation; e.g. when the phone is held in portrait mode (as intended), the text is orientated so that the bottom of the text is pointing left (because it has been told it is in landscape mode).
Is there any way I can make the buttons and the LinearLayout ignore the portrait/landscape settings and force them to behave as I would like?
This is my current .xml file for the activity:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:opencv="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<org.opencv.android.JavaCameraView
android:id="#+id/main_activity_surface_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<ImageView
android:id="#+id/recordingIconImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:src="#drawable/circle_red"
android:visibility="invisible" />
<TextView
android:id="#+id/movement"
android:rotation="270"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:text=""
android:textSize="20sp"
android:textStyle="bold"
android:textColor="#FF0000" />
<LinearLayout
android:id="#+id/button_row_linear_layout"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:orientation="vertical" >
<Button
android:id="#+id/button_retry"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:rotation="270"
android:layout_weight="1"
android:onClick="captureButtonPressed"
android:text="Retry" />
<Button
android:id="#+id/button_start"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:rotation="270"
android:layout_weight="1"
android:onClick="captureButtonPressed"
android:text="Start" />
<Button
android:id="#+id/button_next"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:rotation="270"
android:layout_weight="1"
android:onClick="captureButtonPressed"
android:text="Next" />
</LinearLayout>
</RelativeLayout>
***Edit:
Adding images to clarify (as suggested in comments) and have already switched to relative layout on my own, so the .xml is also updated. Image of current state:
As you can see I've got the buttons where I would like them (used android:rotation="270"). Two issues now:
1) The text of the TextView is clipped offscreen. I'm pretty sure this is because the sizing constraints are calculated as if it is not rotated and only after layout occurs is it rotated (this is a guess, but it does appear as if that is what's happening)
2) I can't seem to get the buttons to expand to take up available space inside the linear layout.
Any suggestions would be very welcome!
Cheers.
I am develop xml with some image button,image buttons show properly in emulator but it Disorganization on
devices(for example galaxy fit)
As described in emulator https://www.dropbox.com/s/qeecp868ht61sck/emulator.jpg and galaxy fit https://www.dropbox.com/s/23r9tvtp0tcn7bs/fit.jpg
what change imagebutton Proportional to size device?
what can i do?
this is my xml:
<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"
tools:context=".Main"
android:background="#drawable/backmain" >
<ImageButton
android:id="#+id/btnfehrest"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="53dp"
android:background="#null"
android:src="#drawable/fehrest" />
<ImageButton
android:id="#+id/btndarbareh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/btnfehrest"
android:layout_marginLeft="21dp"
android:background="#null"
android:src="#drawable/darbareh" />
<ImageButton
android:id="#+id/btnmahsulat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/btndarbareh"
android:layout_marginRight="17dp"
android:background="#null"
android:src="#drawable/mahsulat" />
<ImageButton
android:id="#+id/btnkhoruj"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/btndarbareh"
android:layout_centerHorizontal="true"
android:background="#null"
android:src="#drawable/khoruj" />
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/main"
android:scaleType="fitXY" />
</FrameLayout>
</RelativeLayout>
It is all because you are using Relative Layout in your xml
Relative layout always maintains a relationship with other views in your xml either with Parent view or with child views.
so on small screen your FrameLayout with button image trying to fit in the screen as it maintaining the relationship with other views, that's why its overlaping.
Talking about giving the suggestion regarding this.
1) You can use Linear Layout with scroll view, ie if views gets out of screen you can see them by scrolling down.
//If you don't wanna do this
2) You can create another xml in layout-small with same name.
Example:
res> layout> main.xml
and
res> layout-small> main.xml
Second option will help you in creating multi support for different screen sizes.
Note: By Default layout-small folder is not present but you can create it.
I've got an activity layout specified in an XML file - activity_intro.xml - and I'm trying to create another one that is similar but slightly different - that's going to be activity_instructions.xml.
The Intro activity has a 9patch image at the bottom of the screen that is supposed to stay there and only adjust to different widths of the screens.
The Instructions activity is supposed to contain the same image but above 2 more buttons - all three of these views need to be always located at the bottom of the screen.
activity_intro.xml:
<?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" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/home_background" >
<LinearLayout
style="#style/Activity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageView
android:id="#+id/introAnimationImageView"
android:layout_width="152dip"
android:layout_height="176dip"
android:layout_gravity="center_horizontal"
android:contentDescription="#string/intro_animation_content_description"
android:src="#drawable/animation_intro01" />
<TextView
android:id="#+id/introTextViewTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/intro_title"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="#+id/introTextViewSubtitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/intro_subtitle"
android:textAppearance="?android:attr/textAppearanceMedium" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<Button
android:id="#+id/introButtonLoginSignup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="#string/intro_button_label_login_signup" />
<Button
android:id="#+id/introButtonInstructions"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_alignRight="#+id/introButtonLoginSignup"
android:text="#string/intro_button_label_instructions" />
<Button
android:id="#+id/introButtonReportAnonymously"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/introButtonLoginSignup"
android:layout_centerHorizontal="true"
android:text="#string/intro_button_label_report_anonymously" />
</RelativeLayout>
</LinearLayout>
</ScrollView>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0"
android:contentDescription="#null"
android:scaleType="fitXY"
android:src="#drawable/footer_cityscape" />
</LinearLayout>
Result:
Since I've got working code for Intro, I wanted to make Instructions follow its example but the layout_weight property isn't behaving as expected. First of all, I was only trying to put in the 2 buttons and leave out the image:
<?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" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="0.1"
android:background="#drawable/home_background" >
<LinearLayout
style="#style/Activity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/instructionsTextViewTitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/instructions_title_1"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textStyle="bold" />
<ImageView
android:id="#+id/instructionsImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="#string/instructions_image_content_description"
android:src="#drawable/forms" />
<TextView
android:id="#+id/instructionsTextViewDescription"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/instructions_description_1"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
</ScrollView>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1" >
<Button
android:id="#+id/instructionsButtonPrevious"
style="#style/ButtonPrevious"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:text="#string/instructions_button_label_previous" />
<Button
android:id="#+id/instructionsButtonNext"
style="#style/ButtonNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:text="#string/instructions_button_label_next" />
</RelativeLayout>
</LinearLayout>
This only worked when I set the layout_weight of the bottom RelativeLayout to 1 (instead of 0) and for the ScrollView 0.1 (instead of 1). If I used the original values the RelativeLayout would take up all the screen. Could anyone explain to me why that is?
I also tried googling the issue and noticed people would suggest to set layout_height to 0dip which I tried but it also didn't work as expected.
Secondly, I tried adding the already mentioned ImageView to the bottom RelativeLayout. This, however, basically displays only the ImageView and not the buttons - or one of the buttons is on top of the image (hiding it). Why is that? Don't I specifically set the buttons to be placed below it?
What should the code look like in order for it to be doing what I expect it?
Further explanation:
Below are images that should help indicate what exactly I want to achieve. The green bits are the ScrollViews - I added them because Android devices tend to have diverse screen sizes. Their purpose is to present the content properly independently of the screen size, i.e. if the screen is small, the user will be able to scroll that part to read the entire text and view the image.
The red bit on the left (Intro) shows the ImageView that is supposed to always be at the bottom of the screen; it'll always be there, visible, and it's the green bit above it that will be movable.
If you take a look at the red bit on the right (Instructions), there's a Next button that's covering the image with the lorry/truck that was visible in the Intro screenshot. Now that's wrong - there should be 2 buttons BELOW the image, as seen on the last screenshot (the 2 blue rectangles).
i am using a Dialog to show user some options. i have inflated a xml which content some button. in landscape mode the buttons are showing like this:
in portrait mode buttons are showing in a line. but as the screen cannot hold all the buttons, some buttons are not showing. i want the buttons in portrait mode like this:
that means responsive. but how can i do that? my xml code:
<?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="horizontal"
android:background="#drawable/jinish" >
<Button
android:id="#+id/sound2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="2dp"
android:layout_marginLeft="2dp"
android:background="#drawable/sound_xml"/>
<Button
android:id="#+id/review2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="2dp"
android:background="#drawable/review_xml"/>
<Button
android:id="#+id/instraction"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="2dp"
android:background="#drawable/instraction_xml"/>
<Button
android:id="#+id/solve"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/solve_xml"
android:layout_marginRight="2dp"/>
<Button
android:id="#+id/reset"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/reset_xml"
android:layout_marginRight="2dp"/>
</LinearLayout>
and my java code:
private LinearLayout options_layout;
private Dialog options_show;
options_layout = (LinearLayout) getLayoutInflater().inflate(
R.layout.puzzle_options, null);
options_show = new Dialog(this);
options_show.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
options_show.setContentView(options_layout);
options_show.setCancelable(true);
options_show.setCanceledOnTouchOutside(true);
options_show.getWindow().setBackgroundDrawable(new ColorDrawable(0));
options_show.show();
Use a GridView, and set its columns to a dimen: android:numColumns="#integer/num_columns"
Add to your dimensions declarations (values/dimens.xml for example): <integer name="num_columns">3</integer>
Add another dimensions file with the orientation set to landscape (values-land/dimens.xml for example): <integer name="num_columns">6</integer>
Now, depending on the device orientation, Android will pick the value 3 or 6 for the number of columns.
You will need to create a basic adapter to bind data to the GridView.
I have two activities which opens depending on the SD card presence. One activity has three Buttons and a TextView and the other an ImageView, a button and zoom control. When I change the orientation, the buttons get scrambled around while in horizontal direction. How to go around this?
My 'SD' card 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"
android:background="#1E1E1E"
android:orientation="vertical" >
<Button
android:id="#+id/button_print"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="44dp"
android:background="#drawable/my_button"
android:text="#string/print" />
<TextView
android:id="#+id/text_SDmissing"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="80dp"
android:text="#string/SDmissing"
android:textSize="20dp" />
<Button
android:id="#+id/button_camera"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/button_print"
android:layout_centerHorizontal="true"
android:layout_marginBottom="58dp"
android:background="#drawable/my_button"
android:text="#string/camera" />
<Button
android:id="#+id/button_insert"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/text_SDmissing"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
android:background="#drawable/my_button"
android:text="#string/insert" />
</RelativeLayout>
You have to create separate XML files for portrait and landscape modes and place it in different directories. The device will automatically select the right one. You can use the following directory structure
res/layout/my_layout.xml
res/layout-land/layout.xml
For further reference you can check:
http://developer.android.com/guide/practices/screens_support.html
You can make a folder in your project called "layout-land" (in the "res" directory). In there you can copy all your xml styles from the normal "layout" folder and restyle them for landscape mode. Android will automatically use those layouts for landscape mode.
Your project would look like this: