下拉刷新组件SwipeRefreshLayout

最新推荐文章于 2025-05-13 16:47:49 发布

转载最新推荐文章于 2025-05-13 16:47:49 发布 · 385 阅读

本文介绍了一种解决SwipeRefreshLayout与ScrollView嵌套时产生的滑动冲突的方法，并提供了一个示例项目，展示了如何配置SwipeRefreshLayout的各种属性，以及如何通过监听ScrollView的滚动变化来动态启用或禁用SwipeRefreshLayout的刷新功能。

swiperefreshlayout嵌套scrollview冲突解决方法

if (scll != null) {
    scll.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() {
        @Override
        public void onScrollChanged() {
            if (swipeRefreshLayout != null) {
                swipeRefreshLayout.setEnabled(scll.getScrollY() == 0);
                //CommonLog.infoLog("init scrollView");
            }
        }
    });
}

package com.example.administrator.xialashuaxin;

        import java.util.ArrayList;
        import android.support.v4.widget.SwipeRefreshLayout;
        import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;
        import android.app.Activity;
        import android.os.AsyncTask;
        import android.os.Bundle;
        import android.os.SystemClock;
        import android.widget.ArrayAdapter;


public class MainActivity extends Activity {

    private SwipeRefreshLayout swipeRefreshLayout;
    private int count = 0;
    private ArrayList<String> data = new ArrayList<String>();
    private ArrayAdapter<String> adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
        swipeRefreshLayout.setSize(SwipeRefreshLayout.LARGE);

        // 设置下拉多少距离之后开始刷新数据
        swipeRefreshLayout.setDistanceToTriggerSync(100);

        // 设置进度条背景颜色
        swipeRefreshLayout.setProgressBackgroundColorSchemeColor(this.getResources().getColor(android.R.color.holo_blue_light));

        // 设置刷新动画的颜色，可以设置1或者更多.
        swipeRefreshLayout.setColorSchemeColors(getResources().getColor(android.R.color.holo_blue_bright),
                getResources().getColor(R.color.colorAccent),
                getResources().getColor(R.color.colorPrimary));

        swipeRefreshLayout.setOnRefreshListener(new OnRefreshListener() {

            @Override
            public void onRefresh() {
                /**
                 * 注意：AsyncTask是单线程顺序执行的线程任务。
                 * 如果涉及到大量、耗时的线程加载任务，可以考虑自己利用Thread(ExecutorService线程池)+Handler+Message实现。
                 * */
                LongTimeOperationTask task = new LongTimeOperationTask();
                task.execute();
            }
        });

    }

    private class LongTimeOperationTask extends AsyncTask<String, Integer, String> {

        @Override
        protected void onPreExecute() {
            swipeRefreshLayout.setRefreshing(true);
        }

        @Override
        protected String doInBackground(String... params) {
            SystemClock.sleep(2000);
	//刷新后的执行方法
            return null;
        }

        @Override
        protected void onPostExecute(String result) {

            swipeRefreshLayout.setRefreshing(false);
        }
    }
}

//布局

<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/swipeRefreshLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/scll">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">
        </LinearLayout>
    </ScrollView>
</android.support.v4.widget.SwipeRefreshLayout>