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2014/10/16 ¤W¤È 08:22:08
android Programming Glossary: randomaccessfileCannot extract file from ZIP archive created on Android (device/OS specific) http://stackoverflow.com/questions/11039079/cannot-extract-file-from-zip-archive-created-on-android-device-os-specific static void fixInvalidZipFile File zip throws IOException RandomAccessFile r new RandomAccessFile zip rw try long eocd_offset findEOCDRecord.. File zip throws IOException RandomAccessFile r new RandomAccessFile zip rw try long eocd_offset findEOCDRecord r if eocd_offset.. record in file private static long findEOCDRecord RandomAccessFile f throws IOException long result f.length 22 22 is minimal EOCD..
Implement pause/resume in file downloading http://stackoverflow.com/questions/15349296/implement-pause-resume-in-file-downloading BufferedInputStream connection.getInputStream output new RandomAccessFile outputFileCache rw output.seek downloadedSize byte data new..
How to get Memory usage and CPU usage in android? http://stackoverflow.com/questions/3118234/how-to-get-memory-usage-and-cpu-usage-in-android usage. Hope it can help you. private float readUsage try RandomAccessFile reader new RandomAccessFile proc stat r String load reader.readLine.. private float readUsage try RandomAccessFile reader new RandomAccessFile proc stat r String load reader.readLine String toks load.split..
how to resume an interrupted download - part 2 http://stackoverflow.com/questions/3428102/how-to-resume-an-interrupted-download-part-2 new BufferedInputStream url.openStream 8192 outFile new RandomAccessFile strUrl 1 rw if downloaded 0 outFile.seek downloaded byte data..
Can someone explain how TrafficStats works its magic in the Android OS? http://stackoverflow.com/questions/4029186/can-someone-explain-how-trafficstats-works-its-magic-in-the-android-os modified version of the code above. This one is using RandomAccessFile and doesn't rely on custom imports but uses only built in String.. import java.io.IOException import java.io.RandomAccessFile import android.util.Log public class TrafficStatsFile private.. error. private static long readNumber String filename try RandomAccessFile f new RandomAccessFile filename r try Log.d LOGGING_TAG f.length..
http://stackoverflow.com/questions/4349075/bitmapfactory-decoderesource-returns-a-mutable-bitmap-in-android-2-2-and-an-immu the memory of one bitmap. A source bitmap is raw saved RandomAccessFile on disk no ram memory then source bitmap is released now there's.. File.separator temp.tmp Open an RandomAccessFile Make sure you have added uses permission android name android.permission.WRITE_EXTERNAL_STORAGE.. into AndroidManifest.xml file RandomAccessFile randomAccessFile new RandomAccessFile file rw get the width..
Need help to convert a Pdf page into Bitmap in Android Java http://stackoverflow.com/questions/8814758/need-help-to-convert-a-pdf-page-into-bitmap-in-android-java import java.io.File import java.io.RandomAccessFile import java.nio.channels.FileChannel Globals private WebView.. .getPath randompdf.pdf RandomAccessFile raf new RandomAccessFile file r FileChannel channel raf.getChannel.. .getPath randompdf.pdf RandomAccessFile raf new RandomAccessFile file r FileChannel channel raf.getChannel ByteBuffer bb..
MediaPlayer setDataSource, better to use path or FileDescriptor? http://stackoverflow.com/questions/9625680/mediaplayer-setdatasource-better-to-use-path-or-filedescriptor file was saved. For example if I write a file using new RandomAccessFile filePath rw the file is not actually readable by the mediaplayer..
Can We Install an APK From a ContentProvider? http://stackoverflow.com/questions/9637629/can-we-install-an-apk-from-a-contentprovider . Unfortunately you can't use it to open a RandomAccessFile despite the fact that RandomAccessFile works on descriptors.. use it to open a RandomAccessFile despite the fact that RandomAccessFile works on descriptors just the same as the others the constructor.. I assume the implementation of installation will require a RandomAccessFile so it would not have been possible to support the case you're..
Cannot extract file from ZIP archive created on Android (device/OS specific) http://stackoverflow.com/questions/11039079/cannot-extract-file-from-zip-archive-created-on-android-device-os-specific Android API 9 13 @param zip file @throws IOException private static void fixInvalidZipFile File zip throws IOException RandomAccessFile r new RandomAccessFile zip rw try long eocd_offset findEOCDRecord r if eocd_offset 0 r.seek eocd_offset 16 offset of first.. zip file @throws IOException private static void fixInvalidZipFile File zip throws IOException RandomAccessFile r new RandomAccessFile zip rw try long eocd_offset findEOCDRecord r if eocd_offset 0 r.seek eocd_offset 16 offset of first CDE in EOCD long.. EOCD_SIGNATURE 0x06054b50 Find an offset of End Of Central Directory record in file private static long findEOCDRecord RandomAccessFile f throws IOException long result f.length 22 22 is minimal EOCD record length while result 0 f.seek result if readInt f..
Implement pause/resume in file downloading http://stackoverflow.com/questions/15349296/implement-pause-resume-in-file-downloading connection.getContentLength downloadedSize input new BufferedInputStream connection.getInputStream output new RandomAccessFile outputFileCache rw output.seek downloadedSize byte data new byte 1024 int count 0 int __progress 0 while count input.read..
How to get Memory usage and CPU usage in android? http://stackoverflow.com/questions/3118234/how-to-get-memory-usage-and-cpu-usage-in-android improve this question I use this function to calculate cpu usage. Hope it can help you. private float readUsage try RandomAccessFile reader new RandomAccessFile proc stat r String load reader.readLine String toks load.split long idle1 Long.parseLong toks.. this function to calculate cpu usage. Hope it can help you. private float readUsage try RandomAccessFile reader new RandomAccessFile proc stat r String load reader.readLine String toks load.split long idle1 Long.parseLong toks 5 long cpu1 Long.parseLong..
how to resume an interrupted download - part 2 http://stackoverflow.com/questions/3428102/how-to-resume-an-interrupted-download-part-2 header fields map.toString Setup streams and buffers. input new BufferedInputStream url.openStream 8192 outFile new RandomAccessFile strUrl 1 rw if downloaded 0 outFile.seek downloaded byte data new byte 1024 Download file. for int count 0 i 0 count input.read..
Can someone explain how TrafficStats works its magic in the Android OS? http://stackoverflow.com/questions/4029186/can-someone-explain-how-trafficstats-works-its-magic-in-the-android-os 1 android share improve this question Here's a working modified version of the code above. This one is using RandomAccessFile and doesn't rely on custom imports but uses only built in String functions with their Exceptions . import java.io.FileNotFoundException.. functions with their Exceptions . import java.io.FileNotFoundException import java.io.IOException import java.io.RandomAccessFile import android.util.Log public class TrafficStatsFile private static final String mobileRxFile_1 sys class net rmnet0 statistics.. an ASCII decimal number read from the specified file 1 on error. private static long readNumber String filename try RandomAccessFile f new RandomAccessFile filename r try Log.d LOGGING_TAG f.length f.length String contents f.readLine if contents.isEmpty..
http://stackoverflow.com/questions/4349075/bitmapfactory-decoderesource-returns-a-mutable-bitmap-in-android-2-2-and-an-immu a mutable bitmap. I found an acceptable solution that uses only the memory of one bitmap. A source bitmap is raw saved RandomAccessFile on disk no ram memory then source bitmap is released now there's no bitmap at memory and after that the file info is loaded.. store the raw image data. File file new File Environment.getExternalStorageDirectory File.separator temp.tmp Open an RandomAccessFile Make sure you have added uses permission android name android.permission.WRITE_EXTERNAL_STORAGE into AndroidManifest.xml.. you have added uses permission android name android.permission.WRITE_EXTERNAL_STORAGE into AndroidManifest.xml file RandomAccessFile randomAccessFile new RandomAccessFile file rw get the width and height of the source bitmap. int width imgIn.getWidth int..
Need help to convert a Pdf page into Bitmap in Android Java http://stackoverflow.com/questions/8814758/need-help-to-convert-a-pdf-page-into-bitmap-in-android-java import net.sf.andpdf.refs.HardReference import java.io.ByteArrayOutputStream import java.io.File import java.io.RandomAccessFile import java.nio.channels.FileChannel Globals private WebView wv private int ViewSize 0 OnCreate Method @Override protected.. select a document and get bytes File file new File Environment.getExternalStorageDirectory .getPath randompdf.pdf RandomAccessFile raf new RandomAccessFile file r FileChannel channel raf.getChannel ByteBuffer bb ByteBuffer.NEW channel.map FileChannel.MapMode.READ_ONLY.. bytes File file new File Environment.getExternalStorageDirectory .getPath randompdf.pdf RandomAccessFile raf new RandomAccessFile file r FileChannel channel raf.getChannel ByteBuffer bb ByteBuffer.NEW channel.map FileChannel.MapMode.READ_ONLY 0 channel.size..
MediaPlayer setDataSource, better to use path or FileDescriptor? http://stackoverflow.com/questions/9625680/mediaplayer-setdatasource-better-to-use-path-or-filedescriptor from getApplicationContext .getFilesDir depending on how the file was saved. For example if I write a file using new RandomAccessFile filePath rw the file is not actually readable by the mediaplayer if you use mediaPlayer.setDataSource String path . The..
Can We Install an APK From a ContentProvider? http://stackoverflow.com/questions/9637629/can-we-install-an-apk-from-a-contentprovider this FileDescriptor to open either a FileInputStream or a FileOutputStream . Unfortunately you can't use it to open a RandomAccessFile despite the fact that RandomAccessFile works on descriptors just the same as the others the constructor you'd need is just.. or a FileOutputStream . Unfortunately you can't use it to open a RandomAccessFile despite the fact that RandomAccessFile works on descriptors just the same as the others the constructor you'd need is just missing from the API . As APK files..
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