android record audio permission

focus change ...}} Applying for audio focus and dealing with focus change must have been implemented with each other, and I started by writing a service to play the music, but I didn't apply for audio focus until the start function was called, but I realized Onaudi The Ofocuschange function. I expect the service to stop playing when the focus change occurs, but I find that when another service applies to

Basic knowledge about Android audio Development Let's start with a piece of gossip. Some time ago I had a sentiment: Android development is not a way to go. It is just a platform that provides many encapsulated APIs, this allows you to quickly develop applications for specific services. The real value lies in the integration of

My Android advanced tutorial ------) Android implements music oscilloscope, balancer, bass, and audio field functionsThis example is from crazy Android handout. To implement specific functions, you need to understand the following APIs: MediaPlayer Media Player Visualizer spectrum Equalizer balancer BassBoost bass cont

Android calls the built-in recording audio program Android has its own Audio recording program. You can specify an Action MediaStore. Audio. Media. RECORD_SOUND_ACTION Intent. Start it. Then, in the onActivityResult () method, retrieve the Intent Data, which is the URI of t

Audio this aspect is very profound, I certainly can not speak what advanced things, at most also just some basic knowledge, first, we want to introduce Android he provided the recording class, in fact, he has two, one is Mediarecorder, There is another one that we are going to use today, what is the difference between them? Audiorecord I. Distinction Mediarecorder and Audiorecord can

Android calls your own recorded audio program Android has its own audio recording program, we can specify an action MediaStore.Audio.Media.RECORD_SOUND_ACTION intent to Just start it up. Then, in the Onactivityresult () method, get the intent data, which is the corresponding URI of the recorded

current song when something like that happens. In the game, you usually choose to reduce the amount of bass.Private class noisyaudiostreamreceiver extends broadcastreceiver { @Override Public void OnReceive(context context, Intent Intent) {if(AudioManager.ACTION_AUDIO_BECOMING_NOISY.equals (Intent.getaction ())) {//Pause the playback} }}PrivateIntentfilter Intentfilter =NewIntentfilter (Audiomanager.action_audio_becoming_noisy);Private void Startplayback() {Registerreceiver (Mynoisya

Android 4.1, abbreviated as JB. In Chinese eyes, the word JB is also related to animals. Google modified android so frequently, and finally launched a version that can be put on the mouth of JB all day long. In the future, my articles can also use JB to express the version number, while JB to express what Chairman Mao often said, "Strategic contempt". Please try to understand my mood for writing the word JB

Go from Android 4.1 audio system Change instructions to Android 4.1, English code abbreviation for JB. In the eyes of the Chinese people, the word jb is also a little related to animals. Google so frequently modified Android, finally launched a can be all day jb JB hanging in the mouth of the version. Later my article

used to record PCM data. The audiotrack is used to play PCM data. PCM is the raw audio sample data that can be played with a VLC player. Of course, the channel sample rate and the like to set their own, because the original sample data is no file header, such as:VLC--demux=rawaud--rawaud-channels 2--rawaud-samplerate 44100 AUDIO.PCMGo back to the two classes of Mediamuxer and Mediacodec, and their referenc

Android audio and video goes deep into an AudioRecord recording to generate pcm into wav (with source code download), androidaudiorecord This project address is named AudioRecord recording (can be paused, convert pch to wav ).Https://github.com/979451341/Audio-and-video-learning-materialsHere is an official description1. AndioRecord Overview The main function of

Binder will crash or be blocked due to exceptions. So far, AudioService has fulfilled the obligation of notification. Handler should be used to send subsequent operations to another thread, so that AudioService can stay as far away as possible from the actual impact of callback. So now we can go to AudioService to see how the AudioService is processed. AudioService. requestAudioFocus () is as follows: Public int requestAudioFocus (AudioAttributes aa, int durationHint, IBinder cb, IAudioFocusDi

This example describes the uses-permission of the Android permissions operation. Share to everyone for your reference, specific as follows: When we install the Android software, the system prompts the software for the permissions it needs, and Android has a lot of permissions relative to other systems. We are in the d

Android uses the Root permission to simulate global buttons and touch-screen events in the background (similar to the press-key wizard). Android rootAndroid uses the Root permission to simulate global buttons and touch screen events in the background (similar to the button pushing wizard)Sometimes we need to use

This project address, name is Audiorecord recording (can pause, convert PCH to WAV), for starHttps://github.com/979451341/Audio-and-video-learning-materialsFirst, the official description.1.AndioRecord Approximate descriptionThe main function of the Andiorecord class is to enable various Java applications to manage audio resources so that they can record sound co

During the first Android development, I realized such profound version differences for the first time. My audiorecordCodeThe test was successful at Samsung s5670. Xiaomi, duowei d210t test failed. The error message is as follows: 04-01 12:58:44. 368: E/audiorecord (19808): cocould not get audio input for record source 1 04-01 12:58:44. 368: E/aud

Whether it is text, image or sound, must be organized and stored in a certain format, so that the player will know how to parse this piece of data, for example, for the original image data, our common format is YUV, Bitmap, and for audio, the simplest common format is the WAV format.WAV format, like bitmap, are Microsoft developed a file format specification, they all have a similarity, is the whole file is divided into two parts, the first part is "F

Original address: http://www.cnblogs.com/zyw-205520/archive/2013/01/24/2875609.htmlAndroid Permissions Sub-fine, but the name of a more humane, Android permission than symbiancapabilities have a lot of improvements, the following to see what is the permission to the definition of the license, found that there is a wide range, if you find your way Ordering somewhe

IOS and Android audio Development Summary Recently, because the project needs to change the sound, it is not difficult to learn and Process audio. However, it is still tedious (more than expected) While my mind is still excited, I will summarize my thoughts and record them. This article mainly introduces three parts: 1

you're done * using the MediaRecorder. */ public native void release(); Use of mediarecorder native code is described as follows: A common case of using MediaRecorder to record audio works as follows:MediaRecorder recorder = new MediaRecorder(); recorder.setAudioSource(MediaRecorder.AudioSource.MIC); recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); recorder.setAudioEncoder(Med