事件分发时候的onTouchEvent，onInterceptTouchEvent，dispatchTouchEvent调用顺序

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事件分发时候的onTouchEvent，onInterceptTouchEvent，dispatchTouchEvent调用顺序

2024-08-15 16:30:39 220人阅读

一直想弄清楚onTouchEvent，onInterceptTouchEvent，dispatchTouchEvent的执行顺序，以及内部使用switch (event.getAction())中的执行顺序。趁这次机会赶紧弄清楚。

public boolean onTouchEvent(MotionEvent event) {        super.onTouchEvent(event);        Log.e(TAG, "onTouchEvent");        switch (event.getAction()) {        case MotionEvent.ACTION_DOWN:            Log.e(TAG, "onTouchEvent_ACTION_DOWN");            break;        case MotionEvent.ACTION_MOVE:            Log.e(TAG, "onTouchEvent_ACTION_MOVE");            break;        case MotionEvent.ACTION_UP:            Log.e(TAG, "onTouchEvent_ACTION_UP");            break;        default:            break;        }        Log.e(TAG, "onTouchEvent_return");        return isOnTouchEvent;    }    @Override    public boolean onInterceptTouchEvent(MotionEvent event) {        Log.e(TAG, "onInterceptTouchEvent");        switch (event.getAction()) {        case MotionEvent.ACTION_DOWN:            Log.e(TAG, "onInterceptTouchEvent_ACTION_DOWN");            break;        case MotionEvent.ACTION_MOVE:            Log.e(TAG, "onInterceptTouchEvent_ACTION_MOVE");            break;        case MotionEvent.ACTION_UP:            Log.e(TAG, "onInterceptTouchEvent_ACTION_UP");            break;        default:            break;        }        Log.e(TAG, "onInterceptTouchEvent_return");        return isOnInterceptTouchEvent;    }    @Override    public boolean dispatchTouchEvent(MotionEvent event) {        super.dispatchTouchEvent(event);        Log.e(TAG, "dispatchTouchEvent");        switch (event.getAction()) {        case MotionEvent.ACTION_DOWN:            Log.e(TAG, "dispatchTouchEvent_ACTION_DOWN");            break;        case MotionEvent.ACTION_MOVE:            Log.e(TAG, "dispatchTouchEvent_ACTION_MOVE");            break;        case MotionEvent.ACTION_UP:            Log.e(TAG, "dispatchTouchEvent_ACTION_UP");            break;        default:            break;        }        Log.e(TAG, "dispatchTouchEvent_return");        return isDispatchTouchEvent;    }