I would like to run an ACTION_VIEW with memory data.
The first solution is to write data in a file on sdcard but ... it does not seem so efficient. I was thinking to implement my own content provider, but as far as I understand I need to return an ParcelFileDescriptor. I found a MemoryFile implementation in SDK, however I don't know how to get a ParcelFileDescriptor for a MemoryFile.
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I try and open up a new activity, pointing to the market, with the following code:
CODE:......
It works fine on the device, but the Emulator throws an Exception:
CODE:....
I'm not sure if this is just an emulator thing, or whether this could replicate on a real device?
I have a folder on sd-card in which I keep photos edited in my application. Im trying to force deafult android image viewer to see all pictured in that folder. Unfortunately I am able to see only one picture. The "next" and "previous" arrows are disabled.
The code i use to see only one picture:
CODE:.....
How to activate the browsing option? how to call the intent so that every picture in that folder would be visible?
I have an image file on my sdcard and the path to the file is: /sdcard/apps/MyPath/1249487966270.png
When a user clicks a button on my application I want to display this image to the user. Inside of the click listener I'm using the following code:
CODE:........
The button click event happens, the activity is started and then it is ignored. Nothing appears!
Watching the log through DDMS I see the following entries:
CODE:...........
What am I doing wrong? Why am I getting "Window already focused"? I want to use the default activity for viewing the image (the camera's ViewImage class). But this is not working.
I execute the following code:
CODE:....................
Which opens the image viewer activity but I don't want to see the navigation arrows as well as the items in the menu. I only want the zoom controls. Is it possible to have it like that ?
I am making an app for Android, in my Activity I need to load an array of about 10000 strings. Loading it from database was slow, so I decided to put it directly into one .java file (as a private field). I have about 20 of these classes containing string arrays and my question is, are all the classes loaded into memory after my application is started? If so the Activity in which I need these strings would be loaded quickly, but the application as a whole would have a slow start...
Is there other way, how to very quickly load an 10000 string array from a file?
UPDATE:
Why I need these strings? My Android app allows you to find "journeys" in Prague's public transit - you choose departure stop, arrival stop and it finds your journey (have a look here). My app has a suggestions feature - you enter leter "c" as your departure stop and a suggestions ListView appears with stops starting with "c". For these suggestions I need the strings. Fetching the suggestions from database is slow (about 400ms on G1).
I have an application that needs to have a user visit a web page to authorize it. After spending time in the Browser the user should return the my application.
Currently, I'm launching the Browser with:
CODE:................
After using the browser, I can go back home and launch my application, which stacks a new Activity on top of the previous stack of Activities that were being used in the application. For example. If the user launches the app, they have Activity A in the stack. From there we navigate to Activity B which then launches the Browser. Then, the next time we enter the app, we launch Activity A, which is pushed onto the stack that already contains an A and B.
My question is then, how can I just go back to the previous stack? Basically, do I have to create a new Activity? Is there a better way to launch the Browser, and then come back to my application?
Also, I've been using the Intent.FLAG_ACTIVITY_NEW_TASK when I start the Browser activity so that my app stays running.
I have an application that sends messages to a specified contact. Right now I use
CODE:..............
To send messages, and it works great on the emulator and on my N1. I got complaints from users with HTC incredible that they get force close from android.mms application when they use it. I did more digging and I see there are many ways for sending messages.
For example
CODE:........
And also
CODE:....................
They all seem to work exactly the same on the emulator and on my device, and I could not find anything official about the correct, generally supported way.
I have an app that downloads a pdf from a server and tries to open it with an itent:
Intent intent = new Intent(); intent.setAction(android.content.Intent.ACTION_VIEW); File file = new File(filepath+filename); intent.setDataAndType(Uri.fromFile(file), "application/pdf"); try { startActivity(intent); } catch (ActivityNotFoundException e) {
I have a main class activity that does the task of sending control to other activities on click of a button. I am also starting a thread in the main class. This thread basically sets up a connection with the server and is active throughout the lifetime of the application.I have two functions in the thread class, send and receive data from server.Therefore, when the other activities need to send/receive data from server, they use those particular functions.First of all please let me know if what I am trying to do is fine as per the architecture of the operating system. If its fine, when I try to run the code, the app crashes and i see a NullPointerException and a RuntimeException in the DDMS log.Could some one please help me out in this or suggest a better way to implement the concept.Also, please be assured that, the other functionality of the code works perfectly fine.
View 15 Replies View RelatedDeleting an application results in having more memory available in your G1. But doing so does not affect the memory used by the Market app; in fact, the memory used by the app grows over time and there seems to be no way to clear the data, or is there a way?
View 7 Replies View RelatedIt's perfectly described here how to do it, the only problem: He doesnt know the function
CODE:..............
Those are the relevant packages I imported:
CODE:.................
We're designing an Android app that has a lot of data ("customers", "products", "orders"...), and we don't want to query sqlite every time we need some record. We wanna avoid to query database as most as we can, so we decided to keep certain data allways in memory.
Our initial idea is to create 2 simple classes:
"MemoryRecord": a class that will contain basically an array of objects (string/int/double/datetime/etc...), that are the data from a table record, and all methods to get those data in/out from this array.
"MemoryTable": a class that will contain basically a Map of [Key,MemoryRecord] and all methods to manipulate this Map and insert/update/delete record into/from database.
Those classes will be derived to every kind of table we have in database. Of course that there are other usefull methods not listed above, but they are not important at this point.
So, when starting app, we will load those tables from SQLite database to memory using those classes, and every time we need to change some data, we will change in memory and post it into database right after.
But, we want some help/advice from you. Can you suggest something more simple or efficient to implement such thing? Or maybe some existing classes that already do it for us?
Update:
I understand what you guys are trying to show me, and I thank you for that.
But, let's say we have a table with 2000 records, and I will to list those records. For each one, I have to query other 30 tables (some of them with 1000 records, others with 10 records) to add additional info in the list, and this while it's "flying" (and as you know , we must be very fast at this momment).
Now you'll gonna say: "just build your main query with all those 'joins', and bring all you need in one step. SQLite can be very fast, if your database is well designed, etc...".
OK, but this query will become very complicated and sure, even SQLite be very fast, it will be "too" slow (2 a 4 seconds, as I confirmed, and this isn't a acceptable time for us).
Another complicator is that, depending of user interaction, we need to "re-query" all records, because the tables involved are not the same, and we have to "re-join" with another set of tables.
So, an alternative is bring only the main records (this will never change, no matter what user does or wants) with no join (this is very fast!) and query the others tables every time we want some data. Note that on the table with 10 records only, we will fetch the same records many and many times. In this case, it is a wast of time, because no matter fast sqlite be, it will allways be more expensive to query/cursor/fetch/etc... than just grab the record from a kind of "memory cache". I want to make clear that we don't plan to keep all data in memory allways, just some tables we query very offten.
I would like to be able to save& view the data from 3 edit text fields and a date pick to an SQL lite DB. Can anybody point me to a decent beginners tutorial or perhaps give me an idea of where to start?
View 2 Replies View RelatedHow to read and display the data stored in the Internal Storage-private data on the device memory.
String input=(inputBox.getText().toString());
String FILENAME = "hello_file"; //this is my file name
FileOutputStream fos; try {
fos = openFileOutput(FILENAME, Context.MODE_PRIVATE);
fos.write(input.getBytes()); //input is got from on click button
fos.close(); } catch (FileNotFoundException e) {
e.printStackTrace(); } catch (IOException e) {
e.printStackTrace();
} try { fos1= openFileInput (FILENAME);
} catch (FileNotFoundException e) {}
outputView.setText(fos1./*I don't know what goes here*/);
I want to access phone internal memory to store some data, similar to that of sdcard. but the problem is that the data written by one application is not accessed by other applications. because of uid mismatches.
View 2 Replies View RelatedI'm using the built in sqlite library on the Android platform.
I'm considering adding several general purpose fields that users will be able to use for their own custom applications, but these fields will be blank most of the time.
My question is, how much overhead will these blank fields add to my database? Do null fields even take up per record memory in sqlite? If so, how much? I don't quite understand the inner workings of a sqlite database.
I do know that downloading on Wi-Fi is faster than using data (or so I've read). My question is if I start a download using data connection then turn Wi-Fi on will the download see the Wi-Fi and jump on that to speed up our do I have to start on Wi-Fi for it to use Wi-Fi?
View 2 Replies View RelatedPlease direct me to a description of the techniques that the ContentProvider employs to access data. I am trying to understand how it works as well as what is tunable or even if its meant to be tunable. It the memory management tiered, cached, virtual, flat? Is it file based, shmem based, stream based? Can there be a combination thereof?
Any information, suggestions, or references are welcome. The android fundamentals page says: "The data can be stored in the file system, in an SQLite database, or in any other manner that makes sense;" but the android ContenProvider page barely skins the onion.
In the 2.1 Eris:
In Settings -> Applications -> Running Services
There is a white bar at the bottom. Mine says:
Avail: 10MB + 0.00B in 5 Other:0.00B in 6
(Those numbers have been different, obviously at different times. The above numbers are after killing the still-running Music, Listen, and AK Notebook processes. No other "non-essential" proceses were running. )
But what do they mean?
How does that correlate to Settings -> SD card & phone storage which tells me Available space is 86 MB?
How do I put my apps etc on my sd card to free up the phone memory? Also how do I find out how much phone memory I have left?
View 15 Replies View RelatedI clear that will it delete everything out of my calendar (and then sync up to Google calendar wiping all my events? Or will it clear everything on the phone and then start to re-populate the phone calendar with my online Google calendar? Is there somewhere in android you tell it to only sync X number of weeks with the calendar - I vaguely remember seeing this before but I forget where.
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Is it possible to put game data in memory card and run the game. i mean should the game data be on internal storage in order to run the games or it is ok with memory card too? will the game search for game data only in internal storage or it searches the memory card as well?
How to lock app installed on /data in memory? My phone is rooted.
View 1 Replies View Related33MB worth of data. Obviously all contacts will be backed up in gmail. So I can't lose anything permanently. But will I lose my favorites menu on my Desire? What other hassle will I have to go through if I Clear Data for contacts?
View 1 Replies View RelatedI have OPTIMUS 2x and if I plan to sell it, I want to remove my personal data from it. I know that external SD cards can be formatted with different (repeating format and data overwriting techniques) but my phone has internal 16gb which has some personal data in it. I can format it but the data will still be there? How can I completely remove my data without effecting the system data.
I have a custom rom installed and cwm as well. rooted
I have lg optimus e 975 indian version . I have accidently restored my phone to factory settings there were some important videos in my internal. I want to recover those videos Those were very important.
View 2 Replies View RelatedMy internal phone memory is getting eaten up fast, how can I move the applications and make installations go directly to the SD card?
View 10 Replies View RelatedSo, the moron at the Verizon store who was activating my replacement Droid decided to import or retrieve contact data from my broken droid / SD card....he didn't know that it handled all the contacts from the cloud. As soon as I entered my gmail login it imported all my contacts and so, now I have contacts with duplicate data and some contacts that are now just phone numbers. I tried deleting the contact data and resyncing but it appears to be grabbing this duplicate data from somewhere. All my contacts are CLEAN in gmail when viewed online. But if I look on the phone, when go to edit them each person has 1 contact with multiple google contacts merged together. The problem is, any time I go to search contacts or enter a contact in email or create a contact shortcut, all of them are appearing twice in the selection list.
I went through each contact and split the merges, essentially deleting the dupes, but they are still appearing multiple times in the search/selection lists....and when I resync the dupes come back. I don't see anything that looks like contact data/backup on the SD card and don't know if that is something that can be deleted from the phone's memory or not?
[I know I can deleted all the dupes, but my concern is that I did this already and they came back. Is this data stored anywhere else that it might be pulling it from again when I sync?]
Why the phone memory did not clear even i use the data wipe/factory reset... how can i clear that?
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