how to boost volume on android

Main. xml layout File Android: orientation = "vertical" android: layout_width = "fill_parent"Android: layout_height = "fill_parent">Android: layout_width = "fill_parent"Android: layout_height = "wrap_content"Android: text = "playi

(int quality) Set video quality, Low, medium, and High (Mediaplayer.videoquality_low, Mediaplayer.videoquality_medium, Mediaplayer.videoquality_high), The default is low (most fluid). 2.11 public void Setsubshown (Boolean shown) Set whether captions are displayed 2.12 public void Setaudiotrack (int audioindex) Set the audio track, which must be a getaudiotrackmap (String) return value. 2.13 public void SetVolume (float leftvolume, float rightvolume) Set stereo sound

I am often asked how to calculate the volume during recording. The iOS platform has APIs that can be called directly, but there is no good method on the Android platform, so we have to calculate it by ourselves. The demand for volume calculation is because many applications want to achieve some animation effects based on the

Android. media. AudioManager contains the cross-process AIDL call encapsulation for android. media. AudioService.Normal handling process:1. To adjust the volume, AudioManager indirectly calls AudioService. adjustStreamVolume to complete logical processing;2. AudioService calls VolumePanel to draw the volume adjustment

In Android, you can use a program to get the ringtones and volume of the system's mobile phone. You can also set the ringtone and volume. Android provides the audiomanager class for volume acquisition and volume control. This arti

The Android system does not provide a broadcast of the volume buttons, and the activity's OnKeyDown method captures the volume changes only when the interface is displayed.To get the volume key event in the lock screen or background, you can determine whether the volume key

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

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

chapter source code download and compile This chapter android android The source code of the application in the system and Span style= "font-family:arial;" >android SDK The source code of the various tools and so on, of course, before we know these sources, the first thing we should do is configure android

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

) {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);

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

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

(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

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