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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I know how to update my own programs, and I know how to open programs using the a predefined Uri (for sms or email for example)
I need to know how I can create an Intent to open MyTracks or any other application that I don't know what intents they listen to.
I got this info from DDMS, but I havn't been succesful in turning this to an Intent I can use. This is taken from when opening MyTracks manually.
I have a kind of an ApplicationLauncher that has to start the build-in gallery. But I dont want to get any result from that gallery... I just want to start it and want my "Launcher" to close after that.
What ive tried:
CODE:................
But it doestn even work with this flag... as soon as I click on a pic in the gallery, it closes and returns to my "Launcher". Is there any way to achieve what i want to do?
I don't want to store said file on the sdcard in this case. The file also cannot be storage directly in the apps local files directory. It needs to be in a subdirectory, so it cannot write the file using openFileOutput() and MODE_WORLD_READABLE.
The app may download files small files like pdfs and store them locally in a subdirectory. I would like to be able to have the user open these files if they have an app that can open them.
For example here is an intent for sending a pdf:
CODE:..............
path being something like: /data/data/packagename/files/subdir/example.pdf
That intent will open a pdf viewer, but the viewer is unable to open the file. I assume this is a permissions issue. I tried Mark Murphy's suggestion here: http://groups.google.com/group/android-developers/browse_thread/thread/4e55d869213483a9/b7270078ac1a2744?lnk=raot of using Runtime.getRuntime().exec("chmod 755 " + fileName); but it didn't make any difference. He also suggested a Content Provider but I would like to avoid it if I can because it seems like a lot just to get this file over to another app.
If the content provider is the only option, do I have to save the file to the content provider or can I just use the content provider as a pass through to get it to the other app when I need to?
Does anyone know of an intent I can use to open a raw mp4 resource in the phone's video player?
I tried this code:
CODE:..............
This threw an ActivityNotFoundException, however this has worked for me when the URI was the sdcard and the video was located there. Does anyone know how I can use the above code with a resource file in my app?
I was trying to open an Activity of an other applicatoin by using an implicit Intent. It doesn't work, I thought it is possible to start an Activity of an other Application by using implicit Intent. Or do I missunderstand it?
I added following intent-filter to the AndroidManifest of Application A:
CODE:..............
And called the Intent in Application B by using folloing code:
CODE:.............
All I get ist, the error message that Application A was stoped unexpectedly.
I've been trying to find out how to create an intent that will open the user's preferred browser without specifying the URL. I know how to open it by giving a specific URL like this:Intent intent = new Intent();intent.setAction(Intent.ACTION_VIEW); intent.setData (android.net.Uri.parse ("http://www.google.com")) ;context.startActivity (intent);I don't want to open the browser to any page in particular, just the set homepage or whatever page the user was on last. I've thought about looking up the homepage set within the app but you can't do it with the default Browser app because it is private. Does anybody know of a way to do this?
View 1 Replies View RelatedI'm trying from main Activity (MainFile.java) to open a Map as a new intent through a menu. Something like this...
CODE:..............
And I already have set up thing on my manifest.xml with access to...
CODE:........
It worked fine with other File.class, but with the Map.class doesn't seem to be working.
I have seen the below log message when navigating to the Account & sync settings screen but I am confused as to how to create an Intent to navigate there.I dont seem to have access to the ManageAccountsSettings for development.I just wanted to create an Intent such as below, but I cant call out ManageAccountsSettings.
View 1 Replies View RelatedI 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);
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)?
View 2 Replies View RelatedI 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?
View 2 Replies View RelatedI 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;
}
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 ?
Is there a way to open and edit word file in android and if this application exist does it has an open API?
View 1 Replies View RelatedI have a ListActivity that uses a CursorAdapter to fill the rows in the view. I wrote a database helper class that gives me back results for common queries I make for my app, and it uses an SQLiteOpenHelper implementation I wrote to open the database. I use the open helper to open the database and get a cursor to pass to my CursorAdapter.
Here's a code snippet:
CODE:...................
The problem I'm having, that I didn't have before I implemented the open helper (before I just opened the database directly without a helper), is when I click on an item, which takes me to another activity, and then go back to this activity. When it initializes everything is fine, and my list is populated fine, but when I go back from the activity that follows, the list is empty and in the LogCat I see "Invalid statement in fillWindow()".
It appears from a few post I've seen that the reason is, when I requery the cursor, the database is closed. But I'm not closing it! I'm scratching my head on this one.
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
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..............
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)?
View 9 Replies View RelatedCan 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.
View 2 Replies View RelatedWhat 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.
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?
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?
View 4 Replies View Relatedwhen 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?
View 3 Replies View RelatedI 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?
View 3 Replies View RelatedIs their any proper documentation which mention android internal memory storage and max app size limitation.?
View 2 Replies View RelatedSuppose 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.
View 8 Replies View RelatedI 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?
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?
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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