Question

我在屏幕右侧有一个视图：

<View
    android:layout_width="match_parent"
    android:layout_height="fill_parent"
    android:layout_weight="1"
    android:id="@+id/right_scroll">
</View>

我使用以下方法连接了一个滚动事件监听器：

    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
        AudioManager audioManager = (AudioManager) getApplicationContext().getSystemService(Context.AUDIO_SERVICE);
        Log.d("Gesture ", " onScroll");
        if (e1.getY() < e2.getY()){
            audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_LOWER, AudioManager.FLAG_SHOW_UI);
        }
        if(e1.getY() > e2.getY()) {
            audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_RAISE, AudioManager.FLAG_SHOW_UI);
        }
        return false;
    }

但这会改变音量太快。有没有办法像MXPlayer一样减慢音量变化？

Answer 1

我找到了办法。没有完美的工作，但完成工作！

    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
        if (e1.getY() < e2.getY() ){
            volumeUp = 0;
            volumeDown += 1;
            if(volumeDown > 7) {
                Log.i("Increased", "Vol decrease");
                audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_LOWER, AudioManager.FLAG_SHOW_UI);
                volumeDown = 0;
            }
        }
        if(e1.getY() > e2.getY()) {
            volumeDown = 0;
            volumeUp += 1;
            if(volumeUp > 7){
                Log.i("Increased", "Vol increase");
                audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_RAISE, AudioManager.FLAG_SHOW_UI);
                volumeUp = 0;
            }

        }
        return false;
    }

MXPlayer就像音量控制一样

1 个答案: