Android :: Proper Way To Dim The Screen?
Aug 16, 2010
I have seen 2 methods so far in my search, both of which I am having trouble with.
Method 1)
Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS, 100);
Method 2)
IHardwareService hardware = IHardwareService.Stub.asInterface(ServiceManager.getService("hardware"));
hardware.setScreenBacklight(.5);
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Jan 21, 2010
I have an application that uses OpenGL on a GLSurfaceView. The problem is that the initial load takes quite a while processing textures and getting things ready.
What i want to do is have a simple PNG displayed (with a slight animation) while the GLSurfaceView is getting ready. As soon as it's ready to render, i would like to tear down the splash screen.
What is the right way to do this? I've tried ViewFlipper, ViewSwitcher and a bunch of other things to switch between my R.layout.main view and my GLSurfaceView but i can't seem to get it right. Any ideas?
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Nov 24, 2010
What is the proper way of sizing the dimensions of an image in a hdpi screen vs a ldpi screen.
For instance, an 89*80 png displays fine, with the text, on my droid 2....but how should I go about resizing the image to be smaller on a smaller screened droid? Do I manually alter the image and place it in the ldpi folder or will it do that automatically?
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Jan 21, 2010
I have an application that uses OpenGL on a GLSurfaceView. The problem is that the initial load takes quite a while processing textures and getting things ready.
What i want to do is have a simple PNG displayed (with a slight animation) while the GLSurfaceView is getting ready. As soon as it's ready to render, i would like to tear down the splash screen.
What is the right way to do this? I've tried ViewFlipper, ViewSwitcher and a bunch of other things to switch between my R.layout.main view and my GLSurfaceView but i can't seem to get it right.
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Jan 3, 2010
I am using handbrake to put some movie trailers on my Eris does anyone know what the proper video resolution setting shoud be? I know the screen is 320x480 but I couldn't find the correct settings.
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Dec 9, 2009
What is the proper way to set a timer in android in order to kick off a task (a function that I create which does not change the UI)? Or there is a better way in android (android's handler)?
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Sep 13, 2010
Forgive me if this is a topic that has already been discussed, but I've searched for hours and can't seem to find the answer I'm looking for. I'm trying to cut my teeth on Android programming with a simple file manager app and currently have most all functions working, but I can't seem to open a selected file with the appropriate app.
Here is my current code:
CODE:..................
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Mar 3, 2009
I want to re-use 1 adapter (similar to well known ImageAdapter from samples) with 2 different views - Gallery and GridView. I need to specify LayoutParams for the each View returned by getView() method of my adapter. In case of Gallery it should be instance of Gallery.LayoutParams, and in case of GridView it should be GridView.LayoutParams. I'll get an exception for sure if I'll try Gallery.LayoutParams with GridView and vice versa.What is the best way to do that? Can I somehow use "parent" parameter (ViewGroup parent) for that?
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Oct 7, 2010
I have an app I am working on and being new to Android Dev I am running into a situation. I have a Scores class not extended from anything (Activity,Service, etc) but in the same package that needs to access SharedPreferences
public class Scores {
Context ctcx;
public Scores(Context context) { ctcx = context;
}
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Mar 18, 2010
I have written an application and added 2 contacts on emulator, but i
am not able to update their names on android 2.1, code is working on
android 1.6 platform with the following code.
ContentValues contactValues = new ContentValues();
contactValues.put(Contacts.People.NAME, firstName+" "+lastName);
getContentResolver().update(UpdateContactUri, contactValues, null,
null);
In android 1.6 i am getting Uri for those two contacts are "content://
contacts/people/1" and "content://contacts/people/2".
but in 2.1 I am getting these values are "content://contacts/people/8"
and "content://contacts/people/9" and while updating its giving
"java.IllegalArgumentException, Empty values" exception.
When i tried to put a static Uri like "content://contacts/people/1",
code was debugged sucessfully but contact was not updated.
How can i resolve it, why i am not getting uri like 1.6 platform ?
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Jun 5, 2010
I'm having a bit of trouble getting videos to play on my HTC Evo with Android 2.1. I have several videos that I play on my PSP, and work just fine. However, when I transferred them over to my Evo's MicroSD card and tried to play them in any video player, they only played the audio stream, and no picture was shown. I never had trouble getting PSP-formatted videos to work on phones before; they worked n my G1 just fine. I assumed that because the Evo and PSP even had similar-sized screens, it would be even more compatible. It sounds somewhat foolish when I type it out, but one could expect it to work. I have tried playing it in the stock video player, the Meridian player, and the Video Player app from the android market, and they all had the same error. The file is an .mp4; and, as I said, gave me no problems when played in the PSP's video player.
Here's the specifications on the video file:
Type: MPEG4
Video Codec: AVC
Audio Codec: AAC
Size: 25 MB
Length: 00:23:41
Width: 480
Height: 272
Aspect Ratio: 16:9
Data Rate: 99kbps
Total Bitrate: 147 kbps
Frame Rate: 23 fps
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Jan 11, 2010
the app I'm trying to implement allows the user to select a sound file (MP3 or WAV) to play at a specific date and time showing a dialog with a progress bar and an OK/Cancel button allowing the user to stop the playing of the sound file. I want it to behave something like the countdown apps I've seen or even the built-in alarm clock app. As I'm implementing this simple (I thought!) app, I'm trying to better understand the platform and make the application conform to the Android way.
As I've been writing the app, I learn more about how things are supposed to work on the Android platform. And here's where I'm getting a bit confused. During my attempts to get the alarm to fire and display, I'm learning that properly formed Android applications are not supposed to show dialogs as a result of a background service or broadcast receiver being invoked through Android's alarm service. Instead, I think, the app is supposed to use a notification on the status bar to alert the user. The user then has the option to look at the notification to see what the app is trying to tell them..............
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Aug 28, 2010
I started to develope an application. When I wanted to close the application I clicked on the home screen, but the app is still playing in the background. Than I tried to click on the "back" key, but nothing happend, so I've created a key event listener for the 'back" key, and inside that method I wrote finish(); Now my app is closing but I think it's still running in the background, because when I go to "manage applications" I can still see it in the "running" tab, and if I press it, I see I can click on the "force close" to actually close the app. What do I need to do in order to really close the app without leaving it open (one way or another)?
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Nov 22, 2010
Can finish() be used to close an activity from a service? If not, what is the proper way to end an activity from a Service? I've created an activity from my service and need to close it.
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Feb 22, 2010
What is the best (most proper) location to install the Android SDK on Mac?
I've seen in some posts that somewhere in the Home directory is advantageous. Some seem to have placed the SDK in the Applications directory.
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Aug 19, 2010
I am writing an android application which uses a REST-based API on the server. So far the login works perfectly using HttpGet = I send the credentials, it sends me back a JSON response object containing session id or failure. I then moved onto using another get api (this one is passed the sessionid) and the response I get back looks like a valid one "200 - Ok" but the response body contains nothing - 0 text.
If I take the same URL and drop it into a browser, I get all the JSON text I expect displayed in the browser window. So what is the difference between a browser request/response and that of HttpGet? Any clues as to why my HttpGet might return a 'valid' nothing?
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Nov 20, 2009
I am having trouble in finding out the right settings for my emulator to simulate the Motorola Droid. Does anyone know with what settings should I create my emulator, so that I can emulate the Droid handset?
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Mar 21, 2010
when using the new Service.startForeground() method how do you do updates to remote widgets? What is the right way? Updating the remote views doesn't seem to work. Should I notify again with the same ID instead?
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Jan 23, 2009
I have a program that fails to start. When I remove this line of code from the startup it starts with out error... db = SQLiteDatabase.openOrCreateDatabase(data, cf); data is a file that has been made, I have tried multiple locations none worked. cf is a cursor factory. This worked perfectly before version 1.0 and also when put in a try/catch statement still errors out. It is the process has stopped unexpectedly error. Any thoughts as to what permissions I could give the app to make this work? Am I heading in the wrong direction?
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Nov 6, 2009
Is their any proper documentation which mention android internal memory storage and max app size limitation.?
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Apr 27, 2009
Suppose you have an app with a lite version and a full version. The app stores some user data in SharedPreferences, and some data in a SQL database. If a user tests the app for a few days, generating data all the time, and then decides to switch to the paid version, how do you copy or share the data between the two? Some code examples would be appreciated - but for some reason I have a feeling this is much, much more complex than I hope.
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Oct 12, 2010
I have an android app I want to connect to a Google App Engine based server. I can get the auth token from the AccountManager. It seems the next thing I am supposed to do is talk to an auth page to get a cookie. Following the awesome instructions here: http://blog.notdot.net/2010/05/Authenticating-against-App-Engine-from-an-Android-app
I think my url should be:
https://MYAPP.appspot.com/_ah/login?continue=http://localhost/&auth=CrAZYl000ngToken
but rather than a redirect, I get a 500 server error:
Error: Server Error
The server encountered an error and could not complete your request. If the problem persists, please report your problem and mention this error message and the query that caused it. What's up with that? What is the URL I am supposed to be going to? Or maybe I'm doing something else wrong?
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Nov 15, 2010
Can I program for Android using Python? I seem to have stumbled upon many links while searching... however neither of them is concrete.Any suggestions? I want to write apps for Android but really don't want to get into Java for all this. PS: My question is whether I can write proper, full fledged apps for Android.
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Nov 14, 2010
I just updated my x10 yesterday and realized that my android only suggests proper names that appear in my contact list or in the Android database. I've started to add the words I type one by one... but I don't plan in adding the whole dictionary..
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Apr 3, 2012
The issue I am experiencing is that the SurfaceView I am using flickers. Once in a while, the objects I draw flicker and they change their size or colour.
It looks like that sometimes the application skips my calls to 'Paint.setColor()' and the one to 'Paint.setStrokeWidth()'.
I have made methods which change the used paint and then, in order to try to fix this issue, to set it back to the default paint values. Still the issue persists. I have also read that the problem might be due to the double buffering. Is it the case? I am using this code for the DrawingThread:
I also tried to use a dirty Rectangle to try to see if the issue can be fixed, but still nothing. [I might not have understood what it actually does.
Code:
class DrawingThread extends Thread {
private SurfaceHolder _surfaceHolder;
private CustomView _cv;
private boolean _run = false;
[Code] .....
I have read somewhere I should draw on a single bitmap and then draw the bitmap on the canvas. I have tried several times but I cannot manage to do so.
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Jun 18, 2010
Will the android version 2.1 update provide the X10 a proper flash LED when taking photo's? Currently, it's somewhat cumbersome to go all the way into settings to turn on the LED light (that stays on until you turn it off) just to take a well lit photo. So I'm just wondering will the LED flash on the new OS update provide the automatic LED flash?
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Nov 29, 2010
When I was using my x10 when it was only 1.6, when you typed a letter using the android keyboard, it would give multiple word suggestions (ie. i - is, it, in, etc.) which helped a lot. But with 2.1, if I turn it's word suggestions, it only provides me with proper names or contact names. Any way to allow 2.1 to use word suggestions other than these proper/contact names? I don't like the default keyboard. Can no one help? I don't think I'm the only one with this problem.
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Sep 3, 2010
I have a ListView populated via a CursorAdapter. I give my user the ability to alter the data in the list. For example, the user can mark a row as being unread (the data are messages).
Suppose my user marked a row unread. Would a proper implementation mark the row in the database as read and then requery the Cursor?
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Apr 23, 2010
I am using an Android and I have downloaded several media files using xscope, but I can't figure out how to make them my ringtone. I use ringroid to organize my ringtones, but I can't get the files I downloaded through scope to show up in ringroid. I know it is a stupid question, but I'm not phone savvy so if anyone knows how to move these downloads to the proper location to use as ringtones.
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Sep 14, 2010
How can I achieve the following layout in Android?
What I would like, is to have the 3 blue boxes top aligned in their view, and then I'd like to have the red box centered underneath the blue boxes, but so that when I animate the red box up, it slides underneath the blue box.
I have tried placing the blue and red boxes in different layouts, but as soon as I animate the red box up, if it goes outside the border of its layout, it disappears (I don't want the red box's layout to clip the red box, I want the red box to slide under the blue box so that the blue box occludes the red box.)
I have also managed to create this layout using a series of nested layouts, but because of the draw order, the red box always appears on top of the blue box. I attempted to use the bringToFront() method, but I found out that this only works on sibling views within the same layout. Unfortunately I can't get this type of layout while keeping all 4 views within the same layout. Any suggestions? (also, if anyone has better suggestions for the title of this question I'm all ears)
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