I have a large bitmap (say 3888x2592) in a file. Now, I want to resize that bitmap to 800x533 and save it to another file.I normally would scale the bitmap by calling Bitmap.createBitmap method but it needs a source bitmap as the first argument, which I can't provide because loading the original image into a Bitmap object would of course exceed the memory (see here, for example).Is there a way to read a large image file with 10MP or more and save it to a new image file, resized to a specific new width and height, without getting an OutOfMemory exception?I also tried BitmapFactory.decodeFile(file, options) and setting the Options.outHeight and Options.outWidth values manually to 800 and 533, but it doesn't work that way.
I have a large(ish) database - around 30MB, created offline with 400,000 rows. Doing a simple select (name LIKE pattern%) and then showing the query in a listview takes about 10 seconds. I tried indexing that field but no difference. If this is normal I will just use a raw data file and do a binary search myself. If this is not normal I hope someone has a hint or two to what might be wrong.
I am in need to write an application for Android devices that needs to access a large (~200MB) database. What would be the best way to do this? Can I just stick the database in the assets folder? I have read of various limitations that apply to the entire application size and to individual resources within, especially on some devices... What are exactly these limits?
Is there any way to do this apart from a post-installation download from an external server?
I am trying to implement the functionality to resume a large file download, but have not found how to start downloading from a position that is not at the beginning of an InputStream.I am currently using the InputStream.skip() method to go to the position where I want to resume the download, but have found that this method actually reads all the data over the network and then throws it away.I would appreciate some help in learning the correct way to start reading from the resume offset of the internet file being downloaded, so that I can avoid wasting the phone network bandwidth, and also avoid the extra time delay caused by re-downloading all the data that was already previously downloaded.
I need to send files as large as 80 MB, but usually in the 15-25 MB several times every day. I use YouSendit, Megaupload and the like on my laptop. Would be a HUGE help if I could simultaneously upload from my Android phone. It has to be able to handle a folder. Basically, a folder full of pictures.
My application needs to intensively manipulate (read-write) on some structured text data.The size of the data is significant 1Mb. And there is initial data available for the user to start with.My idea is to put this data as a file in the .apk. Then, on initial application launch to read this data and populate Android SQLite database with it. Then just work with this database. But after the database is populated the data file is no longer needed. And I'd like to remove it to free some memory. Alternate approach is to work with this data file instead of SQLite database. But I assume SQLite would work a magnitude faster then i/o on my data file..
Presently am displaying html file in web view and my emulator size 1024*600. If the html file is large then user is scrolling down to see bottom part of the html. I Need to break these html file in equal parts so that it fits exactly in my screen size. I don't want User to Scroll Down but load remaining part (next page) next time.
I have a class that extends View. I override the onDraw method and allow the user to draw on the screen. I am at the point where I want to save this view as an image. I Can use buildDrawingCache and getDrawingCache to create a bitmap that I can write to the SD card. However, the image is not good quality at a large size, it has jagged edges. Since I have a View and I use Paths I can transform all by drawing to a bigger size. I just don't know how to make the Canvas bigger so when I call getDrawingCache it doesn't crop all the paths I am just transformed. What is happening is I transform all my paths but when I write the Bitmap to file I am only getting the "viewport" of the actual screen size. I want something much bigger.
Using your own SQLite database in Android applications: http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/comment-page-2/#comment-12368
However it's keep bringing IOException at
I'am trying to use a large DB file. It's as big as >8MB. I built it using sqlite3 in Mac OS X, inserted UTF-8 encoded strings (for I am using Korean), added android_meta table with ko_KR as locale, as instructed above.
However, When I debug, it keeps showing IOException at
I suspect it's caused by trying to read a big file. If not, I have no clue why. I tested the same code using much smaller text file, and it worked fine.
Can anyone help me out on this? I've searched many places, but no place gave me the clear answer, or good solution. Good meaning efficient or easy.
I will try use BufferedInput(Output)Stream, but if the simpler one cannot work, I don't think this will work either.
Can anyone explain the fundamental limits in file input/output in Android, and the right way around it, possibly?
Well, I am sure that at some point in time you all have sent a video but I am trying to figure out why I can't send videos. Last night, I was performing at a night club and I wanted to send the videos to friends and what not so they can hear our singing. However, the video clips are anywhere from 8-20 seconds long and they are not in HD quality but 3gp. Yet it tells me the message can't be attached because it's too large.
Today I had a show, and my brother recorded me and I wanted to send the video out and it still says the same thing. Is there anything I can do? I love At & T but I am wondering does this have anything to do with their Data cap because when I had my Droid X and Incredible on Verizon. I was able to send videos up to 30 seconds long to phones via MMS but I can't send videos on my Captivate. I couldn't send videos either on the Xperia X10, I had, the aria I had, and now the backflip. (I am just using it because I love motoblur for the social networking, not the phone).
I want make it support multiple screens(small,normal and large).I am 100% sure the all of layouts are working perfectly now, but large screen,the problem is that all XML files of layouts in layout-large can't load,The platform always load default XML file(these are under layout folder) at large screen environment.
I need to somehow backup my applitcations database to a file so that it can later be retored using that file. The only way I would do it would be by reading every table to an xml ffile but it seems soo ineficient. The data does not have to be humand readable.
Is it possible to take a csv file stored in the res/raw resource directory and use it to populate a table in the sqlite3 database? My thought was that, if there was a way to do a bulk import for the entire file into the table then that would be cleaner and faster than iterating over each line in the file and executing individual insert statements...
but I'm having trouble applying those statements in my Android application. My first thought was to try something like the following...but no luck:
Using Local XML file as a database for a android app?
I am trying to build a app with flash using a xml file as database, to read the xml from a external file from the local directory isn't a problem, the problem is how to write data from flash to the xml file.
Is it possible to choose a custom location for the sqlite database file? If possible I want to store the database file in the memory card. And if user switches from one memory card to the other I want my application to use whatever version of the database file available on the card.
Im doing an app which uses sqlite db file in assets folder, There is a screen in my app having a button 'check for update'. Client has given me an URL link to update db file(which gives a sqlite file). When user clicks on the button i need to upgrade the old db file with new db file from URL.
I'm trying to start unit testing on my application (should have done so from the beginning). I've got an Eclipse project structure set up and everything seems to work well, but...
I'm subclassing SQLiteOpenHelper to access the application database. This works well for the application, but when using the same class in the unit tests, it writes to the same database as the actual application. This is obviously rather irritating, since unit test data shows up when developing and testing the actual application.
What's the best way to make the SQLiteOpenHelper class write to a different database file when being called from the unit tests?
My plan is to prepopulate a database on a virtual device and then include database in the distribution of my app.However, I can't find the database file.Is it on my hard disk some where?How do I get it?I tried connecting using adb, I did an "ls" and then got really scared by this obscure list of directories.