Android(安卓)ScrollView嵌套ScrollView滚动的问题解决办法

引用：http://mengsina.iteye.com/blog/1707464

http://fenglog.com/article.asp?id=449

Android ScrollView嵌套ScrollView滚动的问题解决办法
原文地址：http://trivedihardik.wordpress.com/2011/09/19/scrollview-inside-scrollview-scrolling-problem/

搞技术的多少看的懂E文，也不翻译了。

While designing rich layouts you might need to use two scrollview in your app.
Well ideally its not advised to use two scrollview in a view. So try to avoid it.

Why this problem occurs ? :

When you put two scrollview android just get confused which scroll view is touched. So sometimes it gets unable to deliver touch event.

But even if the requirement forces you to make such layouts. Try this…

Say case is somewhat like this….

    <ScrollView        android:id="@+id/parent_scroll"        android:layout_width="match_parent"        android:layout_height="0dp"        android:layout_weight="1"        android:background="@color/black"        android:cacheColorHint="#00000000"        android:fadingEdge="none"        android:overScrollMode="never"        android:scrollbars="none">        <LinearLayout            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:gravity="center"            android:orientation="vertical">                 <ScrollView                    android:id="@+id/child_scroll"                    android:layout_width="match_parent"                    android:layout_height="wrap_content"                    android:layout_toRightOf="@+id/TextView001"                    android:cacheColorHint="#00000000"                    android:fadingEdge="none"                    android:overScrollMode="never"                    android:scrollbars="none">                    <TextView                        android:id="@+id/tv_detail"                        android:layout_width="match_parent"                        android:layout_height="wrap_content"                        android:padding="15dp"                        android:textColor="@color/cbWhite"                        android:textSize="@dimen/cb_textSize_big"/>                </ScrollView>          </LinearLayout>    </ScrollView>

Step 1 : Provide unique id to both the scrollview.
Step 2 : get reference of that two scrollview in your activity.

    ScrollView parentScroll = (ScrollView) findViewById(R.id.parent_scroll);    ScrollView childScroll = (ScrollView) findViewById(R.id.child_scroll);

Step 3: Now set touch listeners for both.

        parentScroll.setOnTouchListener(new View.OnTouchListener() {            public boolean onTouch(View v, MotionEvent event) {                findViewById(R.id.child_scroll).getParent().requestDisallowInterceptTouchEvent(false);                return false;            }        });        childScroll.setOnTouchListener(new View.OnTouchListener() {            public boolean onTouch(View v, MotionEvent event) {                // Disallow the touch request for parent scroll on touch of child view                v.getParent().requestDisallowInterceptTouchEvent(true);                return false;            }        });

Done …

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