bytebuffer

This question already has answers here : Gets byte array from a ByteBuffer in java (6 answers) Does anyone know how to convert ByteBuffer to byte[] array? I need to get byte array from my ByteBuffer . When I run bytebuffer.hasArrray() it returns no. Every question I looked so far is converting byte array to byteBuffer, but I need it other way around. Thank you. nomis ByteBuffer exposes the bulk get(byte[]) method which transfers bytes from the buffer into the array. You'll need to instantiate an array of length equal to the number of remaining bytes in the buffer. ByteBuffer buf = ... byte[]

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to work on media extractor for audio streaming of OGG file format on android. I have written some code with help of google documents. but it doesn't work at all. May be i have Written a wrong code or syntax As i am student. it show me failed to instantiate extractor public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); MediaExtractor extractor = new MediaExtractor(); extractor.setDataSource("http://examplelink.com/ogg");// I cant put real link so sorry for

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've got a ByteBuffer in java, and want to read, then conditionally modify that byte, e.g. with a method like: public void updateByte(int index) { byte b = this.buffer.getByte(index); if (b == someByteValue) { this.buffer.setByte(index, someNewByte); } } How can I ensure that the reading then modifying of a byte happens atomically? I don't want to synchronize the entire ByteBuffer or updateByte method, since I want multiple threads to be able to read/write different bytes of the buffer at the same time (i.e. updateByte can be called

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am currently developing an android application using google maps api and I sometimes get a weird crash (in my opinion) for no ovious reason. Here's the crash log : 12-02 16:38:57.071 20796-21137/com.appsolute.ParkYoo E/AndroidRuntime： FATAL EXCEPTION: GLThread 4623 Process: com.appsolute.ParkYoo, PID: 20796 java.lang.NullPointerException: Attempt to get length of null array at java.nio.DirectByteBuffer.put(DirectByteBuffer.java:399) at java.nio.ByteBufferAsShortBuffer.put(ByteBufferAsShortBuffer.java:159) at com.google.maps.api.android

由于功能太过简单，就不过多阐述了，直接上阻塞式代码： package com.lql.nio; import org.junit.Test; import java.io.IOException; import java.net.InetSocketAddress; import java.nio.ByteBuffer; import java.nio.channels.FileChannel; import java.nio.channels.ServerSocketChannel; import java.nio.channels.SocketChannel; import java.nio.file.Paths; import java.nio.file.StandardOpenOption; /** * @author: lql * @date: 2019.11.01 * Description: 客户端发送一条数据给服务端，服务端接收后反馈一条信息 */ public class TestBlockingNIO2 { @Test public void client() { SocketChannel socketChannel = null; FileChannel inChannel = null; try { //获取通道 socketChannel =

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: So far I am able to setup a MediaCodec to encode a video stream. The aim is to save my user generated artwork into a video file. I use android Bitmap objects of the user artwork to push frames into the stream. See the code snippet I use at the bottom of this post (it is the full code nothing is trimmed): MediaCodec uses ByteBuffer to deal with video/audio streams. Bitmaps are based on int[] which if converted to byte[] will require x4 the size of the int[] I did some research to figure out what contracts are there in place for the ByteBuffer

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm receiving a Bitmap in byte array through socket and I read it and then I want to set it os.toByteArray as ImageView in my application. The code I use is: try { //bmp = BitmapFactory.decodeByteArray(result, 0, result.length); bitmap_tmp = Bitmap.createBitmap(540, 719, Bitmap.Config.ARGB_8888); ByteBuffer buffer = ByteBuffer.wrap(os.toByteArray()); bitmap_tmp.copyPixelsFromBuffer(buffer); Log.d("Server",result+"Length:"+result.length); runOnUiThread(new Runnable() { @Override public void run() { imageView.setImageBitmap(bitmap_tmp); } });

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am reading dds textures, but since once built the jar I can't access those textures through url and file and have to use InputStream instead. So I would need to know how I can obtain a from an java.io.InputStream . Ps: no matter through 3rd part libraries, I just need it working 回答1: For me the best in this case is Apache commons-io to handle this and similar tasks. The IOUtils type has a static method to read an InputStream and return a byte[] . InputStream is; byte[] bytes = IOUtils.toByteArray(is); Internally this creates a