Android Material加载进度条制作代码

<?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="@color/bg_color"   android:orientation="vertical" >    <in.srain.cube.views.ptr.PtrFrameLayout     xmlns:cube_ptr="http://schemas.android.com/apk/res-auto"     android:id="@+id/material_style_ptr_frame"     android:layout_width="match_parent"     android:layout_height="match_parent"     cube_ptr:ptr_duration_to_close="100"     cube_ptr:ptr_duration_to_close_header="100"     cube_ptr:ptr_keep_header_when_refresh="true"     cube_ptr:ptr_pull_to_fresh="false"     cube_ptr:ptr_ratio_of_header_height_to_refresh="1.2"     cube_ptr:ptr_resistance="1.7" >      <ListView       android:id="@+id/article_listview"       android:layout_width="match_parent"       android:layout_height="match_parent"       android:cacheColorHint="#00000000"       android:divider="@color/line"       android:dividerHeight="10dp" />   </in.srain.cube.views.ptr.PtrFrameLayout>  </LinearLayout>

mPtrFrameLayout = (PtrFrameLayout) mRootView.findViewById(R.id.material_style_ptr_frame);          // header     final MaterialHeader header = new MaterialHeader(getActivity());     int[] colors = getResources().getIntArray(R.array.google_colors);     header.setColorSchemeColors(colors);     header.setLayoutParams(new PtrFrameLayout.LayoutParams(-1, -2));     header.setPadding(0, Utils.dip2px(getActivity(), 15), 0, Utils.dip2px(getActivity(), 10));     header.setPtrFrameLayout(mPtrFrameLayout);          mPtrFrameLayout.setPinContent(true);     mPtrFrameLayout.setLoadingMinTime(100);     mPtrFrameLayout.setDurationToCloseHeader(100);     mPtrFrameLayout.setHeaderView(header);     mPtrFrameLayout.addPtrUIHandler(header);     mPtrFrameLayout.setPtrHandler(new PtrHandler() {       @Override       public boolean checkCanDoRefresh(PtrFrameLayout frame, View content, View header) {         return PtrDefaultHandler.checkContentCanBePulledDown(frame, article_listview, header);       }        @Override       public void onRefreshBegin(final PtrFrameLayout frame) {         pageNum = 1;         doRequest(pageNum, true);       }     }); 

moreView = Finder.inflate(getActivity(), R.layout.loading_more_footer);     moreView.setVisibility(View.GONE);     article_listview = (ListView) mRootView.findViewById(R.id.article_listview);     article_listview.addFooterView(moreView);     adapter = new ArticleListAdapter(getActivity());     article_listview.setAdapter(adapter);     article_listview.setOnItemClickListener(new OnItemClickListener() {        @Override       public void onItemClick(AdapterView<?> parent, View view,           int position, long id) {         Article article = (Article) adapter.getItem(position);         Intent intent = new Intent(getActivity(),             AppBrowserActivity.class);         intent.putExtra("w_url", article.getUrl());         intent.putExtra("share_desc", article.getTitle());         intent.putExtra("share_pic", article.getPicUrl());         startActivity(intent);       }     });     article_listview.setOnScrollListener(new OnScrollListener(){        @Override        public void onScrollStateChanged(AbsListView view, int scrollState){          // 当不滚动时          if (scrollState == OnScrollListener.SCROLL_STATE_IDLE) {            // 判断是否滚动到底部            if (view.getLastVisiblePosition() == view.getCount() - 1) {             //加载更多功能的代码              moreView.setVisibility(View.VISIBLE);             pageNum++;             doRequest(pageNum, false);           }          }        }        @Override       public void onScroll(AbsListView view, int firstVisibleItem,           int visibleItemCount, int totalItemCount) {         // TODO Auto-generated method stub                }      });