63.android 简单的下拉刷新动画水滴效果

 //第一步 导入依赖

implementation 'com.github.recruit-lifestyle:WaveSwipeRefreshLayout:1.6'

//第二步 写xml布局

<jp.co.recruit_lifestyle.android.widget.WaveSwipeRefreshLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/main_swipe">

    <ListView
        android:id="@+id/main_list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</jp.co.recruit_lifestyle.android.widget.WaveSwipeRefreshLayout>

//第三步 Activity里使用：

private void initView() {
    
    main_list = (ListView) findViewById(R.id.main_list);
    main_swipe = (WaveSwipeRefreshLayout) findViewById(R.id.main_swipe);


    main_swipe.setOnRefreshListener(new WaveSwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            //请在此处刷新列表
            new Task().execute();
        }
    });

}

private class Task extends AsyncTask<Void, Void, String[]> {
    @Override
    protected String[] doInBackground(Void... voids) {
        try {
            //执行了2秒的睡眠
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return new String[0];
    }

    @Override protected void onPostExecute(String[] result) {
        //刷新列表后，调用setdreshing ( false )。动画结束
        main_swipe.setRefreshing(false);
        super.onPostExecute(result);
    }
}

 //最好改成16的

minSdkVersion 16

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