Android中SwipeRefreshLayout和listview的冲突解决办法

SwipeRefreshLayout和listview的冲突解决办法

       在google放出了SwipeRefreshLayout之后,就再也不用辛辛苦苦的用上百行代码来实现下拉刷新了(不过还是需要理解透彻以前版本的下拉刷新是如何实现的),在用的过程中,为了使我们的程序更加的好看,大家肯定想过把各种能滑动的东西结合起来,swiperefreshlayout和listview或者是可以滑动的scrollview结合起来的时候,不免也碰到了冲突的问题.

      现在就来奉上一种处理冲突的方法,先上一段使用swiperefreshlayout的代码.....

<android.support.v4.widget.SwipeRefreshLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:id="@+id/swipe">
    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Random number:"
                android:id="@+id/lbl"/>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/rndNum"
                android:layout_toRightOf="@id/lbl"/>


            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@id/lbl"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="20dp"
                android:text="Swipe to Refresh"
                style="@android:style/TextAppearance.Medium"/>

        </RelativeLayout>
    </ListView>
</android.support.v4.widget.SwipeRefreshLayout>

...    
@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final SwipeRefreshLayout swipeView = (SwipeRefreshLayout) findViewById(R.id.swipe);
        final TextView rndNum = (TextView) findViewById(R.id.rndNum);
        swipeView.setColorScheme(android.R.color.holo_blue_dark, android.R.color.holo_blue_light, android.R.color.holo_green_light, android.R.color.holo_green_light);
        swipeView.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                swipeView.setRefreshing(true);
                Log.d("Swipe", "Refreshing Number");
                ( new Handler()).postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        swipeView.setRefreshing(false);
                        double f = Math.random();
                        rndNum.setText(String.valueOf(f));
                    }
                }, 3000);
            }
        });
    }
....

这样的话,在里面直接上一个listview会和swiperefreshlayout的下拉刷新冲突,怎么样解决这个问题呢?先说一下思路,在listview向下各种滚动的过程中,可以加上一个OnScrollListener,监听listview是否滑到了最顶端的一个item,如果在最顶端,就将swiperefreshlayout设置成setEnabled(true),如果不再最顶端,就设置成setEnabled(false),这样就可以阻止冲突了~~~~~~其他的也可以模仿这种处理形式...

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    final SwipeRefreshLayout swipeView = (SwipeRefreshLayout) findViewById(R.id.swipe);

    swipeView.setEnabled(false);
    ListView lView = (ListView) findViewById(R.id.list);
    ArrayAdapter<String> adp = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, createItems(40,0 ));
    lView.setAdapter(adp);

    swipeView.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            swipeView.setRefreshing(true);
            ( new Handler()).postDelayed(new Runnable() {
                @Override
                public void run() {
                    swipeView.setRefreshing(false);

                }
            }, 3000);
        }
    });

    lView.setOnScrollListener(new AbsListView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(AbsListView absListView, int i) {

        }

        @Override
        public void onScroll(AbsListView absListView, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
                if (firstVisibleItem == 0)
                    swipeView.setEnabled(true);
                else
                    swipeView.setEnabled(false);
        }
    });
}