viewpager和drawerlayout一起用的時候注意需要重寫DrawerLayout和viewpager

重寫drawerlayout

public class HackyDrawerLayout extends DrawerLayout {

public HackyDrawerLayout(Context context) {
    super(context);
}

public HackyDrawerLayout(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public HackyDrawerLayout(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

private boolean mIsDisallowIntercept = false;
//子View告訴父容器不要攔截我們的事件的(true)
@Override
public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) {
    // keep the info about if the innerViews do requestDisallowInterceptTouchEvent
    mIsDisallowIntercept = disallowIntercept;
    super.requestDisallowInterceptTouchEvent(disallowIntercept);
}

@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
    // the incorrect array size will only happen in the multi-touch scenario.
    if (ev.getPointerCount() > 1 && mIsDisallowIntercept) {
        requestDisallowInterceptTouchEvent(false);
        boolean handled = super.dispatchTouchEvent(ev);
        requestDisallowInterceptTouchEvent(true);
        return handled;
    } else {
        return super.dispatchTouchEvent(ev);
    }
}

}
重寫viewpager

public class HackyDrawerLayout extends DrawerLayout {

public HackyDrawerLayout(Context context) {

super(context);

}

@Override

public boolean onInterceptTouchEvent(MotionEvent ev) {

try {

return super.onInterceptTouchEvent(ev);

} catch (IllegalArgumentException e) {

e.printStackTrace();

return false;

}

}

}