我没有在ScrollView上获得ACTION_DOWN

Question

我得到一个滚动视图，里面有一些带有imageView的线性布局。

    <ScrollView
        android:layout_weight="41"
        android:layout_width="0dip"
        android:layout_height="match_parent"
        android:background="@color/light_red_zone"
        android:id="@+id/scrl_pass"
        android:clickable="true"
        android:layout_gravity="center">

        <LinearLayout
            android:id="@+id/lytPass"
            android:background="@color/light_red_zone"
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="left" />
    </ScrollView>

我在LinearLayout中动态添加imageView，它有一个监听器

                    img1.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            savelog(new Dat_Log_DA(id_tile, Long.toString(System.currentTimeMillis()), id_configurazione));
                            if (semaphoreAudio.tryAcquire()) {
                                play(m1);
                            }
                        }
                    });

只需在触摸图像时启动媒体播放器。

然后，我需要在滚动视图上获取动作事件，所以我在滚动视图中添加了一个触摸侦听器

 scrl_pass = (ScrollView) findViewById(R.id.scrl_pass);scrl_pass.setOnTouchListener(new View.OnTouchListener() {
        private float mY = 0;
        private static final String tag = "SCROLL VIEW";

        @Override
        public boolean onTouch(View v, MotionEvent motionEvent) {

            Log.d(tag, "ACTION " + motionEvent.getActionMasked());
            if ((motionEvent.getActionMasked() == MotionEvent.ACTION_DOWN) || (motionEvent.getActionMasked() == MotionEvent.ACTION_POINTER_DOWN)) {
                mY = motionEvent.getY();
                Log.d(tag, "ACTION DOWN " + mY);
            } else if ((motionEvent.getActionMasked() == MotionEvent.ACTION_UP) || (motionEvent.getActionMasked() == MotionEvent.ACTION_POINTER_UP)) {
                Log.d(tag, "Action da " + mY + " a " + motionEvent.getY());
                float currentPosition = scrl_pass.getScrollX();
            }

            return false;
        }
    });

问题是我得到ACTION_MOVE（id = 2）和ACTION_UP（id = 1），但如果在其中一个图像视图上执行了ACTION_DOWN，我就不会得到ACTION_DOWN