volume enhancer for android

In handset mode Am.setspeakerphoneon (FALSE);Setvolumecontrolstream (Audiomanager.stream_voice_call);Am.setmode (Audiomanager.mode_in_call);I use MediaPlayer audiotrack to adjust the volume always fails At.setstereovolume (vol, vol);Player.setvolume (Vol,vol);Then decided to use Audiomanager to adjust the volume. Audiomanager can modify the volume of the syste

Recognize audio streams The first step to creating an excellent audio experience is to understand the type of audio stream that your application will use. The Android system maintains independent audio channels for playing music, alarms, notifications, incoming call ringtones, system sounds, and call calls.) volume, and DTMF tone keyboard dialing ). In this way, the user can independently control the

Today, we have a requirement in the project to use seekbar to control the volume. I thought it was a very simple thing (it was indeed a very simple thing), but at the beginning it could not achieve what I wanted. After some modifications and searches, the solution was finally solved. In the process of solving this problem, I also found some shortcomings in my understanding of Android. So, let's discuss it

) {myimage.setimagedrawable ( Getresources (). getdrawable (R.drawable.normal));} else if (mode = = audiomanager.ringer_mode_silent) {myimage.setimagedrawable (Getresources (). Getdrawable ( R.drawable.mute));} else if (mode = = Audiomanager.ringer_mode_vibrate) {myimage.setimagedrawable (Getresources (). Getdrawable ( r.drawable.vibrate));}}); Normalbutton.sEtonclicklistener (New Onclicklistener () {public void OnClick (View v) {Audioma.setringermode (Audiomanager.ringer_mode _normal);

Previously in the Android 4.4 volume adjustment Process Analysis (a) there is a simple analysis of the volume control process, today I would like to continue to analyze the volume size calculation method. There is a fixed-size volume Volume_max for any playback file, and the

This article translated from: http://developer.android.com/training/managing-audio/volume-playback.html Good user experience is predictable. If your application needs to play multimedia, it is vital that you can use the hardware or software of your device to control the volume, such as Bluetooth headsets or microphones. Similarly, when appropriate, your application should provide media playback operations s

In-depth understanding of Android: Volume IIBasic InformationAuthor: Deng fanpingPress: Machinery Industry PressISBN: 9787111389187Mounting time:Published on: February 1, August 2012Start: 16Page number: 1Version: 1-1Category: Computer> Software and programming> mobile development> android For more information, see "deep understanding of

I carefully studied the problem of the volume curve some time ago. As we all know, the voice perception of human ears is not linear, but logarithm. Therefore, the ideal volume curve should be a linear relationship between the adjustment of the volume level and the logarithm of the volume size. That is: -20lg (y) = A *

Android microphone custom View with dynamic display of Audio Tape Volume 1. The so-called no picture, no truth, first. What we need to achieve is the button of the middle recording, and the surrounding area will display a waveform of the volume size. 2. VolumCircleBar inherits from View and we have customized it. The Code is as follows: VcD4KPHByZSBjbGFzcz

Intent is very common in Android programming, and it has been shown in "Android" to use bundles to transfer values between multiple activity (clicking the Open link) to wake up other activity and pass data between the activity. In fact, the role of intent is far from this, it can also invoke other inherent programs in the system, such as making calls, sending text messages and so on. OnKeyDown is also the c

Ubuntu Linux10.04 above version of the operating system.GNU c is an extension of standard C and is the most commonly used C language compilation environment under Linux.Five Linux device drivers:device-driven communication hardware and software, and distinguish between the hardware, to make a clear responsibility for the engineers and engineers, do not need soft and hard balance. device driver and hardware direct interaction abstraction interface, so that the application software can be driven

In Class I studied Android Deep Exploration (Volume one) of this book. The first section of the textbook details how to build and use the Ubuntn Linux12.04 LTS, Android Simulator and s3c6410 Development Board.First of all, I learned that Android is a very good embedded operating system. Android's system architecture is

Changing the system default volume requires two places:1. Frameworks\base\media\java\android\media\audiomanager.java1 /**@hide Default Volume index values for audio streams*/2 Public Static Final int[] Default_stream_volume =New int[] {34,//Stream_voice_call47,//Stream_system55,//stream_ring68,//One ,//Stream_music76,//Stream_alarm85,//stream_notification97,

For Android volume adjustment, the volume can be divided into key adjust volume and settings. Let's start by talking about the volume adjustment in the settings.First, the volume of the classification:1.audiomanager.stream_voice_c

The android program obtains and sets the ringtone and volume.Obtain the ringtones and volume of the Android mobile phone through a program. Similarly, you can set the ringtone and volume easily! Audiomanager maudiomanager = (audiomanager) getsystemservice (context. audio_service );// Call

image of the memory disk)--Root--Symbols-System (storing the main file system)--System.img (image of File system)--userdata-qemu.img (data file used by simulator)--USERDATA.IMG (data content image)5. Publish your apk as an Android built-in programAPK is the zip format, odex format file is separate apk and Classes.dex file get. Copy the project directory to the Android source code directory/packagea/apps, p

package: Copy the downloaded Android-sdk_rl6-linux.tar file to a directory on the Linux file system, then open the terminal from that directory and enter the command: # TAR-XVF Android-sdk_rl6-linux.tar. 3. Enter the extracted directory to execute the Android script file. 4. Add the Platform-tools and tools directories to the PATH environment variable. Two: Inst

(1) Procedures Android API's AudioManager provides a method to adjust the volume of mobile phones. audioMa.adjustVolume(AudioManager.ADJUST_LOWER, 0); audioMa.adjustVolume(AudioManager.ADJUST_RAISE, 0);You can also adjust the voice mode of your phone to vibrate or mute. AudioMa. setRingerMode (AudioManager. RINGER_MODE_NORMAL ); AudioMa. setRingerMode (AudioManager. RINGER_MODE_SILENT ); AudioMa. setRinge

mstreamtypes is deposited into the Audioflinger, which is Mstreamtypes[stream].volume =value.When thread tries to play a sound, it does so in preparetracks_l:int32_t VL = t->prevvolume[0]; int32_t VR = t->prevvolume[1]; Const int32_t Vlinc =t->volumeinc[0]; Const int32_t Vrinc =t->volumeinc[1]; Do { *out++ + = (VL >> +) * (int32_t) *in++; *out++ + = (VR >> +) * (int32_t) *in++;

(Audiomanager.stream_music, audiomanager.adjust_raise, audiomanager.fx_focus_navigation_up); Currentvolume = Maudiomanager.Getstreamvolume (Audiomanager.stream_music); LOG.I (TAG, "Current Volume:" + Currentvolume); public void-down (view view) {///volume decrease Maudiomanager.adjuststreamvolume (Audiomanager.stream_music, Audiomanager.adjust_lower, AUDIOMANAGER.FX_FOCUS_NAVIGATIO