Android : Is It Faster To Draw Directly On Portrait / Landscape Layout?

May 14, 2009

Presumably one layout or other must be native to the O/S and the other layout needs an expensive internal rotation + transformation in order to display in correct position.

Android : Is it faster to draw directly on portrait / landscape layout?


Android :: Design A Layout In Portrait And Landscape Orientations?

Aug 29, 2010

I am finding that my layouts tend to look great in one orientation but if I change the phone's orientation, things are a mess. For example on one screen I have 6 large buttons that look great in portrait orientation but if the user changes phone orientation, those buttons get cut off in portrait.

Do I need to code two layouts for every screen - one for portrait and one for landscape? That would be such a waste of time.

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Android : How Can I Add Portrait Layout On Top Of Landscape Camera SurfaceView?

Apr 19, 2010

My application should hold a camera preview surface. The camera is fixed to landscape view via AndroidMainfest.xml I am quite new to the Android plattform programming. Of course I don't know much about the programming tricks and workarounds yet. I did a lot of research over the last two weeks (even studied the native Camera implementation), but couldn't find a good solution so far.

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Android : How To Know Device / Emulator Layout (landscape/portrait) Is Changed?

May 21, 2010

I am using two xml layout file layoutPotrait.xml and layoutLandscape.xml.When device/emulator is in portrait mode i want to set the content view with layoutPortrait.xml file and when I will change the emulator to landscape mode I want to set content view with layoutLandscape.xml file. How can I achieve this?

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Android :: AVD Rotate Portrait / Landscape?

Oct 12, 2010

I know if you change a android phone from portrait to landscape sometimes the app relays its self out on the screen.. so how do I simulate rotating a phone with the AVD? On the Blackberry emulators there's a button in the menu to turn the phone, but I can't find it or any option on the Android ones?

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Android :: Switching From Landscape To Portrait Orientation

Apr 3, 2009

I want to display a table which would fit better in portrait view than in the landscape view. How do i instruct the emulator to change the orientation?

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Android :: Widget Different Portrait And Landscape Orientation

Jul 8, 2010

How did you support both landscape and portrait for appwidget? the layout of appwidget will never change when orientate the device from landscape to portrait. by the way, would you please tell me which device support both landscape and portrait for appwidget?

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Android :: Retrieving Data From Portrait To Landscape

Feb 18, 2010

For changing from portrait to landscape mode i have done some changes in manifest.xml and included some code in test.java file

In manifest.xml i have included <activity_name android:configChanges="orientation"/>

i entered some data in portrait mode. but when i rotate my mobile from portrait to landscape the control goes to onConfigurationChanged() method.

public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); setContentView(R.layout.screen1_landscape);
}

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Android :: Portrait / Landscape Mode Supporting

Mar 31, 2009

When we try to implement orientation in AP layer, we can set "android:screenOrientation" parameter in AndroidManifest.xml file or call "setRequestOrientation()" method of Activity class. But if I want to porting android in new HW device, how can I do? Do I need to modify the graphic driver, or just add configuration in program. (Actually I do some experiments but my AP cannot rotate) Besides, can every experts tell me when I set the "android:screenOrientation" parameter, which process will read this configuration, pass to where and which process will do the rotation?

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Android :: Portrait Vs Landscape Orientation Using Sensor

Dec 18, 2009

I'm trying to detect landscape vs portrait orientation with the following:

public void onSensorChanged(SensorEvent event) { float pitch = event.values[2];
if (pitch <= 45 && pitch >= -45) { // portrait }
else if (pitch < -45) { // landscape }
else if (pitch > 45) { // landscape } }

Anyone have something more robust? It works pretty well, except if the phone is in a landscape orientation and the user starts to 'flatten' it out, starts thinking it's in the portrait orientation again.

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Android :: Specify Different Layouts For Portrait And Landscape Orientations?

Jan 23, 2010

I've seen references to being able to specify two separate layout xml files for an activity, one for Portrait and one for Landscape. I've not been to find any information on how to do that though. How do I specify for each activity which xml file is it's portrait layout and which is the Landscape layout? Is it also possible to specify different layouts for different screen sizes? If so, how is this done?

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Android :: Add Rotation Effect When Portrait To Landscape?

Jun 17, 2010

How to add rotation effect when change mode portrait to landscape? I want to make it smooth.

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Android :: Crashes When Device In Portrait And App Landscape

Sep 26, 2010

I made an app thats use the camera. The first problem i get was that i can't use portrait preview without the rotation 90º image. I used the solution (landscape for all), but now, only in the real device, when i start the app and i have the device in portrait mode it crashes (need to force close) and only after reboot the phone its possible to connect to camera, even in the camera app.

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HTC EVO 4G :: Down Landscape And Won't Go Portrait

Aug 3, 2010

Since the FROYO update some stuff is only in Lanscape and it's what I would call upside down. Is there a fix for that? Like Gmail and internet and some others I noticed. Other than that it's smokin fast and everything is working fine for me.

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Android :: Method To Draw Bitmaps Faster On Droid Canvas / OpenGL?

Jun 15, 2010

I currently have a game written using the Android canvas. It is completely 2D, and I draw bitmaps as sprites on the canvas, and it technically works, but I have a few features that I need to add that will require drawing many more bitmaps on the screen, and there will be a lot more movement.

The app needs more power.

What is the best way to go from this method of drawing Bitmaps on a canvas to using OpenGL so I can draw them faster?

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Android :: Startup Emulator With Landscape Orientation Instead Of Portrait

Jun 19, 2010

As u know, since android 1.6, there are not dirs on dirs like HVGA-L. Instead, there is only one dir like HVGA. That is, HVGA-P and HVGA-L are merged into one dir, HVGA. So, only HVGA can be selected and by default the emulator is started with portrait mode. Though I can press CTRL+F11/F12 to switch it to landscape mode, I do not like it. What I want is to start the emulator with default mode of landscape. Would anyone know how to do it?

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Android :: Configuration Changed / Orientation From Portrait To Landscape?

Nov 10, 2010

While working on orientation change I have found that the onConfigurationChanged is not getting called when changing the orientation from portrait to landscape.But when I am changing from landscape to portrait the method is getting called. Is it the correct behavior because the onConfigurationChanged should by called whenever we are changing the orientation. (android:configChanges="orientation")? I have also found one strange behavior or error, When we are changing from portrait to landscape orientation the string value is displayed correctly(automatically by android system) but when in am changing the orientation from landscape to portrait the same string is displayed(i.e the string in landscape mode).The expected behavior is the string id specified in the portrait mode should be displayed.Is it an platform bug or something wrong in my code/programming.

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Android :: How To Rotate Whole System Screen From Landscape To Portrait ?

Aug 25, 2009

Does anybody know how to rotate whole system screen from landscape to portrait?The platform is not G1 or any other phones, it's just a normal ARM platform.Not only one application but whole system.

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Android :: Automatically Switch Keyboard If Portrait Vs Landscape

Aug 20, 2010

I like to use Swype in portrait mode but the Android keyboard in landscape mode. Is there an app to auto-switch the keyboard based on the orientation of the phone?

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Android :: Portrait And Landscape Layouts - Drawable Image

Nov 15, 2009

I have an app that I started in 1.6. It used images that were specific to portrait and landscape layouts. I put these in the corresponding drawable folders, for example:

drawable/image01,png
drawable-land/image01.png

when I created a new project with 2.0 it gave me the following folders. drawable drawable-hdpi drawable-mdpi drawable-lpdi. when I look at the documentation around these folders it all seems very straight forward. I assumed that you were able to create the following folders. drawable-hdpi-land drawable-mdpi-land drawable-lpdi-land

and everything would work as before. The image directory would swap automagically pulling the appropriately laid out image depending on your screen orientation. Unfortunately it does not. The SDK seems to get confused, and if I clean the project, the folders come up as poorly named.

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Android :: Force Screen To Switch Between Landscape / Portrait

Feb 1, 2009

Is there a way to pro grammatically force the screen to change between landscape and portrait mode? I want to allow the user to choose a menu item to rotate the screen, instead of relying on pulling out the keyboard. I am looking for something like activity.change Screen Orientation, but couldn't find such a thing in the API docs.

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Android :: Put TextView In Same Position In Landscape / Portrait Mode

Oct 1, 2009

I am facing a problem when i put a text view on screen in landscape mode it position is fine but when i switch to portrait mode it position is remain fix it not change according to screen resolution.

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Android :: How To Know The Device State - Landscape/portrait - Programatically

Nov 5, 2009

I want to know the device state programmatically.

I mean whether the device is in portrait mode or in landscape mode by programming (in a class which extends the Activity).

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Android : How To Rotate Screen To Landscape (or Portrait) By Programmable Way?

Mar 28, 2010

How to rotate the screen to landscape (or portrait) by programmable way? I am trying to make it independent when user rotates the screen.

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Android : Way To Run Code Support For Landscape / Portrait In Droid?

Sep 8, 2010

I am writing two xml files for landscape and portrait and create res/layout-land folder,execute my code but did not work portrait mode,have any setting set for work my code for landscape and portrait..please give any sample code for that.

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Android : How To App Knows That View Of Device Changed From Portrait To Landscape?

Feb 28, 2009

how the application knows that the view of device has changed from portrait to landscape.is there any way to know the application about view change.

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Android :: Change Screen Orientation From Portrait To Landscape?

Nov 1, 2010

I want to change the screen orientation from portrait to Landscape and vice-versa when the user shakes his/her android mobile phone, can any one help how to achieve this, because I do not know what event is fired, at the time his/her shaking thier android mobile phone. For Instance When the users touch the button in UI, touch event is fired, similarly when the user shakes his android mobile phone, what is fired.

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HTC EVO 4G :: Rotating From Landscape To Portrait

Jun 8, 2010

My Evo seems to have a very strong preference for landscape view. Any time I am not holding the phone completely straight up it drops to landscape. Then even if I do push it back straight up it doesn't wanna go back to portrait view. Has anyone else experienced this and are there any tricks to get rid of the problem?

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Android :: Screen Orientation Landscape Back To Portrait Not Working

Mar 20, 2010

I've racked my brain for hours over this issue. I have created a main.xml and designed one for the res/layout-land (landscape) format and another one for portrait in res/layout. When I rotate the emulator (ctrl-F11), my app rotates properly to landscape using the correct main.xml, but a subsequent rotation back to portrait just keeps the landscape mail.xml. This was done in a 2.0 AVD.. Out of desperation I downloaded the new Sample Code for Multiple Resolutions and had to create a new 2.1 AVD, to my surprise rotation with this app works correctly as expected. So I then decided to try my app on the 2.1 AVD and it works perfectly. So, is this a Bug in a 2.0 AVD or is there something special I need to be doing for < 2.1 SDK versions?

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Android :: NullPointer Exception - Switching From Portrait To Landscape Mode

Feb 11, 2009

I have written a small example which displays the photos from the server. Its working fine when the device is in one of the mode (landscape of potrait). But if I switch to landscape to potrait or potrait to landscape while downloading the photos from the server, I am getting NullPointerException, showing with androidRunTimeException.

I am using LinearLayout -> ImageView
I am using threads to download the images.

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