今天遇到的问题是DrawerLayout在上面，下面的View拿不到点击事件，最后实在没办法，都曲线救国了（只要解决需求，曲线救国也是不错的选择），挽起袖子撸完代码，对曲线救国的效果也比较满意，坐下来没事了就想看看不能解决点击的冲突，就进到DrawerLayout源码里看了一下，发现了这一段
@Override
public boolean onTouchEvent(MotionEvent ev) {
mLeftDragger.processTouchEvent(ev);
mRightDragger.processTouchEvent(ev);
final int action = ev.getAction();
boolean wantTouchEvents = true;
switch (action & MotionEventCompat.ACTION_MASK) {
case MotionEvent.ACTION_DOWN: {
final float x = ev.getX();
final float y = ev.getY();
mInitialMotionX = x;
mInitialMotionY = y;
mDisallowInterceptRequested = false;
mChildrenCanceledTouch = false;
break;
}
case MotionEvent.ACTION_UP: {
final float x = ev.getX();
final float y = ev.getY();
boolean peekingOnly = true;
final View touchedView = mLeftDragger.findTopChildUnder((int) x, (int) y);
if (touchedView != null && isContentView(touchedView)) {
final float dx = x - mInitialMotionX;
final float dy = y - mInitialMotionY;
final int slop = mLeftDragger.getTouchSlop();
if (dx * dx + dy * dy < slop * slop) {
// Taps close a dimmed open drawer but only if it isn't locked open.
final View openDrawer = findOpenDrawer();
if (openDrawer != null) {
peekingOnly = getDrawerLockMode(openDrawer) == LOCK_MODE_LOCKED_OPEN;
}
}
}
closeDrawers(peekingOnly);
mDisallowInterceptRequested = false;
break;
}
case MotionEvent.ACTION_CANCEL: {
closeDrawers(true);
mDisallowInterceptRequested = false;
mChildrenCanceledTouch = false;
break;
}
}
return wantTouchEvents;
}
对，你没看错，他不但拦截了点击事件，还消费了，就说为什么传不下去，既然知道了问题的所在，解决起来就简单多了，我们可以自定义一个DrawerLayout，代码如下，其实很简单就是我们自己来控制DrawerLayout是否相应点击事件，（DrawerLayout为了响应抽屉的打开和收起，所以拦截了点击事件，当初没想起来）
/**
* Created by Bert on 2017/7/26.
*/
public class MyDrawerLayout extends DrawerLayout {
private static final String TAG = "MyDrawerLayout";
private boolean is_click = true;
public MyDrawerLayout(Context context) {
super(context);
}
public MyDrawerLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
public MyDrawerLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
/**
* 控制DrawerLayout是否响应点击事件
* @param can
*/
public void setCanClick(boolean can){
is_click = can;
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if(is_click){
return super.onTouchEvent(ev);
}else {
return false;
}
}
}
OK,就这么简单，需要点击事件传递下去的时候setCanClick（false）就Ok了。
总结一下：还是看源码重要！！！！！！！！！
