I have some png files that I am applying a color to. The color changes depending on a user selection. I change the color via 3 RGB values set from another method. The png files are a random shape with full transparency outside the shape. I don't want to modify the transparency, only the RGB value. Currently, I'm setting the RGB values pixel by pixel (see code below).I've come to realize this is incredibly slow and possibly just not efficient enough do in an application. Is there a better way I could do this? Here is what I am currently doing. You can see that the pixel array is enormous for an image that takes up a decent part of the screen
Is there anyway to read data from an attachment through the USB port on an Android device? In particular, an EKG. Most the work can be done by the hardware of the device to simplify the output to a single number, a voltage reading. If its not possible, what about modifying an accessory that can already communicate with an android device? Thinking of devices that attach to android phones, what about sending the data as an audio signal to be read as the microphone from a headset and then analyzing the audio signal to convert it to a number that can be used to display a value. how to make this work?
I want to read MMS data i have seen the part table in the mmssms.db where the mms entries stored i am using cursor to and i want to know the appropriate URI like i am using "content://mms-sms/conversations" and the Column names of "Address"(Sent to), "Text" or "Subject" and "Data" column name of image.
i have seen the schema of mmssms.db and Their Column of part Table.
I've noticed lately that some app recommender programs seem to get data off the android market. I'm wondering how I could retrieve information, such as screen shots, description, developer, number of downloads, rating, etc...
I've done many searches and I haven't found any solutions. It would be nice to be able to use that info to be able to see a rating for an app inside an app chooser, for example. Or perhaps be able to track changes and rating over time and version history, etc...
Is there an API to access that information? Is there a way to parse the data from a website? Or is there a complicated hack involved?
With android 4.1 on my Galaxy S3 I could select an image in the gallery, tap the menu and choose settings where I could find the exif data, but since upgrading to 4.3 the settings option is missing. So how do I now pull up the exif, notably the gps coordinates, on the phone?
I want to collect phone numbers from phone with last-name and first-name (for sorting purpose). How can I achieve that in the simplest way? Is it possible with one query? And I need both versions: for pre 2.0 SDK and later to be compatibile.
In my app i need to read the data at a content provider before the system actually initializes. Probably what i understand is that a boot complete intent would launch a homescreen activity.Exactly before the system initialized i want to see the data provided by the content provider and use it.
Android documents starting the email intent for sending emails with Intent.ACTION_SEND. Is there an intent which directs the user to reading his email, or which launches the default email application? The application that launches the "read mail" intent would get no access to the email data.
Sometimes in LogCat I'll see Wrote stack trace to '/data/anr/traces.txt'
But when using the DDMS perspective, "File Explorer" View, I can't see anything in the "data" directory, I'm assuming because permission denied. Is there a way (short of rooting my ion device) to read what's in that text file?
Is there perhaps an android app for developers that will show the contents of the file? It would seem there would have to be some way of reading the file without rooting the device, otherwise why does the o.s. write it out? How can I read this file?
I am developing an application that needs to access data on the sd card. When I run on my development device (an odroid with Android 2.1) I have root access and can construct the path using:
However, when I install this on a phone (2.1) where I do not have root access I get files == null. I assume this is because I do not have the right permissions to read the data from the sd card. I also get files == null when just trying to list files on /sdcard. So the same applies without my constructed path.
Also, this app is not intended to be distributed through the app store and is needs to use data copied separately to the sd card so this is a real use-case. It is too much data to put in res/raw (I have tried, it did not work).
I have also tried adding: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
To the manifest, even though I only want to read the sd card, but it did not help. I have not found a permission type for reading the storage.
I need to store data to use in my android program. Here are the details about the data: There will be one table. Each "row" of data will have a unique INT identifier. Other then that field, there will be four other INT fields and a text field. The string field will probably be a 2 or 3 sentences long. Each of the 4 INT fields will correspond to the ID of other rows.
I have bought a credit card reader for my nexus one, like Square use. This is a device that plugs into headset jack and you swipe the credit card for this or any card with magnetic striper.I wanna know if there is a way to read the information it sent by headset jack?
This is some new for me but I need this device to read identification ID.Tthere is any API that can be connected to headeset jack ?
I'm not even concerned with the camera per se. I want at the closest thing to the display screen. Meaning: it could even be the desktop the user is looking at, completw w/ the background and the icons she moves back and forth.
Let's say, at time t=1 sec, the app goes to pixel (78, 300) on that display and obtains its value. What may be at (78, 300) could be a portion of the icon or some speck of tree leaf on the photo being used as desktop background.
I'm familiar with BitmapFactory.decodeFile() for getting at the pixel contents of a file. But what about the display?