无法在黑莓Playbook设置音量 [英] Cannot set volume on BlackBerry Playbook

问题描述

我在改变黑莓Play图书的数量是一个问题。首先，我再包装我的Andr​​oid应用程序，以Palybook应用。我需要使用搜索栏和seeklistener我设置音频管理音量改变黑莓PlayBook的音量。这里是code：

I have an issue in changing the volume of blackberry play book. First I am repacking my Android App to Palybook App. I need to change the volume of blackberry playbook using seekbar and in seeklistener I am setting the Audio manager volume. Here is the code:

audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

public void onStopTrackingTouch(SeekBar seekBar)
{
    // TODO Auto-generated method stub

}

public void onStartTrackingTouch(SeekBar seekBar) {
    // TODO Auto-generated method stub
}

public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) 
{

  // TODO Auto-generated method stub

   audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, progress, 0);

}

但是，当我跑我的应用程序，并改变搜索栏，系统（黑莓PlayBook）的卷不change.is是由于黑莓palybook安全

But when I run my app and change the seekbar, the volume of the system(Blackberry playbook) does not change.is it due to blackberry palybook security

推荐答案

你确定你已经添加了这些权限？

Are you sure you have added these permissions ?

<uses-permission android:name="android.permission.WRITE_SETTINGS" ></uses-permission>
<uses-permission android:name="android.permission.CHANGE_CONFIGURATION" ></uses-permission>
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" ></uses-permission>
<uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS"/>

也可以尝试这个code

Also try this code

while(audioManager.getStreamVolume(AudioManager.STREAM_MUSIC) < progress) {
audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_RAISE, AudioManager.FLAG_SHOW_UI);

}

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