java - 如何获取Android设备当前的媒体类型？

Question

我在我的服务中使用 AudioManager 来控制媒体音量，但我只能控制我在 setStreamVolume() 中编写的媒体类型。我尝试使用 getRingerMode() 获取媒体类型，但内容是我的服务。

int currentType = audioManager.getRingerMode();
int currentVoice = audioManager.getStreamVolume(currentType);

audioManager.setStreamVolume(currentType, currentVoice, AudioManager.FLAG_PLAY_SOUND | AudioManager.FLAG_SHOW_UI);

如何控制其他应用的音量？

Answer 1

引用:how to increase and decrease the volume programmatically in android

AudioManager audioManager = (AudioManager) getApplicationContext().getSystemService(Context.AUDIO_SERVICE);


Button upButton = (Button) findViewById(R.id.upButton);
        upButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

//To increase media player volume               
                audioManager.adjustVolume(AudioManager.ADJUST_RAISE, AudioManager.FLAG_PLAY_SOUND);
            }
        });

        Button downButton = (Button) findViewById(R.id.downButton);
        downButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

//To decrease media player volume
                audioManager.adjustVolume(AudioManager.ADJUST_LOWER, AudioManager.FLAG_PLAY_SOUND);             
            }
        });