大家好，又见面了，我是你们的朋友全栈君。
SwipeRefreshLayout大家都用过，google推出的，亲生儿子，兼容性自然最好！可是SwipeRefreshLayout只支持下拉刷新，没有上拉加载更多，这样是没办法满足我们的需要的，所以本文就对它进行一下定制，加上下拉刷新。
首先贴用法：
xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffccee"
android:orientation="vertical" >
<com.utilslibrary.widget.SuperSwipeLayout
android:id="@+id/swipeRefreshLayout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ListView
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
</com.utilslibrary.widget.SuperSwipeLayout>
</LinearLayout>
Activity 里面只需要这样设置即可：
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.widget.SwipeRefreshLayout;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import com.utilslibrary.widget.SuperSwipeLayout;
import java.util.ArrayList;public class SwipeRefreshLayoutActivity extends Activity { private SuperSwipeLayout swipeRefreshLayout; private ArrayList<String> data = new ArrayList<String>(); private ArrayAdapter<String> adapter; int loadNum; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_swipe_refresh_layout); adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, data); swipeRefreshLayout = (SuperSwipeLayout) findViewById(R.id.swipeRefreshLayout); ListView listView = (ListView) findViewById(R.id.listView); //下拉刷新监听 swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { // SwipeRefreshLayout接管其包裹的ListView下拉事件。 // 每一次对ListView的下拉动作，将触发SwipeRefreshLayout的onRefresh()。 @Override public void onRefresh() { System.out.println("======fresh..."); new Handler().postDelayed(new Runnable() { @Override public void run() { adapter.clear(); for(int i = 0; i < 20; i ++){ adapter.add(i + ""); } swipeRefreshLayout.stopFreshing(false); loadNum = 0; } }, 3500); } }); //加载更多的监听 swipeRefreshLayout.setOnReLoadListener(new SuperSwipeLayout.OnReLoadListener() { @Override public void onLoad() { new Handler().postDelayed(new Runnable() { @Override public void run() { for(int i = 0; i < 10; i ++){ data.add("loadMore: " + loadNum + " - " + i); } //一页的更多加载完了 swipeRefreshLayout.stopReLoad(); adapter.notifyDataSetChanged(); loadNum++; if(loadNum >= 3){ //没有更多了 swipeRefreshLayout.ReLoadComplete(); } } }, 1500); } }); listView.setAdapter(adapter); swipeRefreshLayout.startRefresh(); } }//看到没？用法是不是超简单？哈哈～下面看实现：
import android.content.Context; import android.database.DataSetObserver; import android.graphics.drawable.AnimationDrawable; import android.support.v4.widget.SwipeRefreshLayout; import android.util.AttributeSet; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.view.ViewTreeObserver; import android.widget.AbsListView; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.TextView; import com.utilslibrary.R; /** * 定制SwipeRefreshLayout实现自动刷新，加载更多 * Created by sam on 17/2/22. */ public class SuperSwipeLayout extends SwipeRefreshLayout { public static final int PULL_STATUS_NOMAL = 0;//正常狀態 public static final int PULL_STATUS_REFRESHING = 1;//正在刷新 public static final int PULL_STATUS_LOADMORE = 2;//正在加载更多 public static final int PULL_STATUS_LOADMORE_STOP = 3;//已经加载完更多 Context mContext; ListView mListView; OnReLoadListener mOnReLoadListener; View mFooterView; View mLoreMoreView;//加载更多的view LinearLayout mFooterLayout;//整个footer的布局 LinearLayout mFooterLayoutGroup;//自定义footerView的父布局 SwipeRefreshLayout.OnRefreshListener mOnRefreshListener; TextView mLoadMoreTextView; ImageView mLoadMoreImage; private int mStatus; String mReLoadingText, mNoMoreText; public SuperSwipeLayout(Context context) { super(context); init(context); } public SuperSwipeLayout(Context context, AttributeSet attrs) { super(context, attrs); init(context); } /** * 初始化样式 */ private void initRefreshStyle(){ //加载颜色是循环播放的，只要没有完成刷新就会一直循环 setColorSchemeResources( android.R.color.holo_blue_bright, android.R.color.holo_orange_light, android.R.color.holo_green_light, android.R.color.holo_red_light, android.R.color.holo_purple ); } private void initLoadTextRes(){ mReLoadingText = "正在加载更多..."; mNoMoreText = "没有更多了～"; } public ListView getListView(){ return mListView; } private void init(Context context) { this.mContext = context; initRefreshStyle(); initLoadTextRes(); mLoreMoreView = createLoadView(context); mLoadMoreTextView = (TextView) mLoreMoreView.findViewWithTag("tv_loadmoer"); mLoadMoreImage = (ImageView) mLoreMoreView.findViewWithTag("image_loading"); mLoreMoreView.setVisibility(View.GONE); AnimationDrawable anim = (AnimationDrawable) mLoadMoreImage.getBackground(); anim.start(); mFooterLayoutGroup = new LinearLayout(mContext); mFooterLayoutGroup.setOrientation(LinearLayout.VERTICAL); mFooterLayout = new LinearLayout(mContext); mFooterLayout.setOrientation(LinearLayout.VERTICAL); LinearLayout.LayoutParams footerParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, dipToPixels(context, 45)); footerParams.gravity = Gravity.CENTER; mFooterLayout.addView(mFooterLayoutGroup);//外部添加的footerView mFooterLayout.addView(mLoreMoreView, footerParams);//加载更多view mListView = new ListView(context); mListView.addFooterView(mFooterLayout); addView(mListView, new ViewGroup.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)); mListView.setOnScrollListener(new AbsListView.OnScrollListener() { @Override public void onScrollStateChanged(AbsListView view, int scrollState) { if (mStatus == PULL_STATUS_LOADMORE_STOP) { return; } // 当不滚动时 if (mStatus != PULL_STATUS_LOADMORE && scrollState == AbsListView.OnScrollListener.SCROLL_STATE_IDLE) { // 判断是否滚动到底部 if (view.getLastVisiblePosition() == view.getCount() - 1) { if (null != mListView && mListView.getFooterViewsCount() == 0) { mLoreMoreView.setVisibility(View.INVISIBLE); return; } //加载更多佈局的代码 mOnReLoadListener.onLoad(); setStatus(PULL_STATUS_LOADMORE); } } } @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { } }); getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { //这里要减去footerview // int defaultViewCount = mListView.getHeaderViewsCount() + mListView.getFooterViewsCount(); if (null != mOnReLoadListener && mListView.getCount() > defaultViewCount) { mLoreMoreView.setVisibility(View.VISIBLE); System.out.println("===onGlobalLayout " + mListView.getCount()); return; } } }); } private View createLoadView(Context context){ LinearLayout layout = new LinearLayout(context); layout.setOrientation(LinearLayout.HORIZONTAL); ImageView imageView = new ImageView(context); imageView.setTag("image_loading"); TextView textView = new TextView(context); textView.setTag("tv_loadmoer"); LinearLayout.LayoutParams imageParams = new LinearLayout.LayoutParams(dipToPixels(context, 40), dipToPixels(context, 40)); imageParams.gravity = Gravity.CENTER; imageView.setBackgroundResource(R.drawable.progressbar); layout.addView(imageView, imageParams); LinearLayout.LayoutParams textParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); textParams.gravity = Gravity.CENTER; layout.addView(textView, textParams); return layout; } private int dipToPixels(Context context, float dip){ return (int)(context.getResources().getDisplayMetrics().density * dip); } private void setStatus(int status){ mStatus = status; switch (status){ case PULL_STATUS_NOMAL: mLoadMoreTextView.setText(mReLoadingText); break; case PULL_STATUS_LOADMORE: mLoreMoreView.setVisibility(View.VISIBLE); mLoadMoreImage.setVisibility(View.VISIBLE); mLoadMoreTextView.setText(mReLoadingText); break; case PULL_STATUS_LOADMORE_STOP: mLoadMoreTextView.setText(mNoMoreText); mLoadMoreImage.setVisibility(View.GONE); break; case PULL_STATUS_REFRESHING: break; } } /** * 更多加载完成 */ public void stopReLoad(){ setStatus(PULL_STATUS_NOMAL); } /** * 没有更多了～ */ public void ReLoadComplete(){ setStatus(PULL_STATUS_LOADMORE_STOP); } /** * 这里说一下，一般listview加载更多是没有footerview的， * 但我这样把它加进去了，mFooterLayout是整个footerview的容器，是线性布局的，当然你也可以改 * 加载更多的view会拼在addFooterView这个传进来的view下面 * @param footerView */ public void addFooterView(View footerView){ if(null == mFooterLayoutGroup || mFooterLayoutGroup.getChildCount() > 0){ return; } mFooterLayoutGroup.addView(footerView, new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)); } public void removeFooterView(){ if(null != mFooterLayoutGroup && mFooterLayoutGroup.getChildCount() > 0){ mFooterLayoutGroup.removeAllViews(); } } /** * 自动刷新 */ public void startRefresh(){ this.post(new Runnable() { @Override public void run() { setStatus(PULL_STATUS_REFRESHING); setRefreshing(true); mOnRefreshListener.onRefresh(); } }); } public void stopFreshing(boolean fresh){ if(fresh){ setStatus(PULL_STATUS_REFRESHING); }else{ setStatus(PULL_STATUS_NOMAL); } super.setRefreshing(fresh); } public void setOnRefreshListener(SwipeRefreshLayout.OnRefreshListener listener){ mOnRefreshListener = listener; super.setOnRefreshListener(mOnRefreshListener); } public void setOnReLoadListener(OnReLoadListener listener){ this.mOnReLoadListener = listener; } public interface OnReLoadListener{ public void onLoad(); } }版权声明：本文内容由互联网用户自发贡献，该文观点仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 举报，一经查实，本站将立刻删除。发布者：全栈程序员-用户IM，转载请注明出处：https://javaforall.cn/152935.html原文链接：https://javaforall.cn
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