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Android帶刷新時(shí)間顯示的PullToRefresh上下拉刷新

 更新時(shí)間:2018年12月10日 08:39:10   作者:SUNSHINE_OF_MY  
這篇文章主要為大家詳細(xì)介紹了Android帶刷新時(shí)間顯示的PullToRefresh上下拉刷新,具有一定的參考價(jià)值,感興趣的小伙伴們可以參考一下

用過(guò)很多上下拉刷新,找到一個(gè)讓自己滿(mǎn)意的確實(shí)不容易,有些好的刷新控件,也并不是公司所需要的,在這里我給大家推薦一下我所喜歡的上下拉控件,實(shí)現(xiàn)也挺簡(jiǎn)單,需要的不妨來(lái)用一下,效果一看便知

 

加載就是一個(gè)圓形進(jìn)度條,一個(gè)正在加載Textview,我就不上圖了

這個(gè)是刷新的頭布局

<?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="wrap_content"
 android:orientation="horizontal" >

 <FrameLayout
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_margin="10dip" >

 <ImageView
  android:id="@+id/iv_listview_header_arrow"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:minWidth="30dip"
  android:src="@mipmap/ic_launcher" />

 <ProgressBar
  android:id="@+id/pb_listview_header"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:indeterminateDrawable="@drawable/common_progressbar"
  android:visibility="gone" />
 </FrameLayout>

 <LinearLayout
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:layout_gravity="center_vertical"
 android:gravity="center_horizontal"
 android:orientation="vertical" >

 <TextView
  android:id="@+id/tv_listview_header_state"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="下拉刷新"
  android:textColor="#FF0000"
  android:textSize="18sp" />

 <TextView
  android:id="@+id/tv_listview_header_last_update_time"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_marginTop="5dip"
  android:text="最后刷新時(shí)間: 2014-10-10 12:56:12"
  android:textSize="14sp" />
 </LinearLayout>

</LinearLayout>

這個(gè)是加載的底部局

<?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="wrap_content"
 android:orientation="vertical" >

 <LinearLayout
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_gravity="center_horizontal"
 android:layout_margin="10dip"
 android:gravity="center_vertical"
 android:orientation="horizontal" >

 <ProgressBar
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:indeterminateDrawable="@drawable/common_progressbar" />

 <TextView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_marginLeft="10dip"
  android:text="加載更多..."
  android:textColor="#FF0000"
  android:textSize="18sp" />
 </LinearLayout>

</LinearLayout>

下面是運(yùn)行布局嵌套的listview布局,如果使用請(qǐng)換一下包名

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 tools:context="jiexinkeji.com.shuaxin.MainActivity">
 <jiexinkeji.com.shuaxin.RefreshListView
 android:id="@+id/refreshlistview"
 android:layout_width="match_parent"
 android:layout_height="match_parent"></jiexinkeji.com.shuaxin.RefreshListView>

</android.support.constraint.ConstraintLayout>

下面是在drawable文件夾下面創(chuàng)建的一個(gè)文件:

<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
 android:fromDegrees="0"
 android:pivotX="50%"
 android:pivotY="50%"
 android:toDegrees="360" >

 <shape
 android:innerRadiusRatio="3"
 android:shape="ring"
 android:useLevel="false" >
 <gradient
  android:centerColor="#FF6666"
  android:endColor="#FF0000"
  android:startColor="#FFFFFF"
  android:type="sweep" />
 </shape>

</rotate>

這個(gè)是定義的一個(gè)接口,有刷新和加載兩個(gè)方法

package jiexinkeji.com.shuaxin;

public interface OnRefreshListener {

 /**
 * 下拉刷新
 */
 void onDownPullRefresh();

 /**
 * 上拉加載更多
 */
 void onLoadingMore();
}

下面的類(lèi)是繼承自L(fǎng)istView,來(lái)實(shí)現(xiàn)下拉刷新上啦加載

package jiexinkeji.com.shuaxin;

import android.content.Context;
import android.support.v4.widget.SwipeRefreshLayout;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.AbsListView;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;

import java.text.SimpleDateFormat;

public class RefreshListView extends ListView implements AbsListView.OnScrollListener {

 private static final String TAG = "RefreshListView";
 private int firstVisibleItemPosition; // 屏幕顯示在第一個(gè)的item的索引
 private int downY; // 按下時(shí)y軸的偏移量
 private int headerViewHeight; // 頭布局的高度
 private View headerView; // 頭布局的對(duì)象

 private final int DOWN_PULL_REFRESH = 0; // 下拉刷新?tīng)顟B(tài)
 private final int RELEASE_REFRESH = 1; // 松開(kāi)刷新
 private final int REFRESHING = 2; // 正在刷新中
 private int currentState = DOWN_PULL_REFRESH; // 頭布局的狀態(tài): 默認(rèn)為下拉刷新?tīng)顟B(tài)

 private Animation upAnimation; // 向上旋轉(zhuǎn)的動(dòng)畫(huà)
 private Animation downAnimation; // 向下旋轉(zhuǎn)的動(dòng)畫(huà)

 private ImageView ivArrow; // 頭布局的剪頭
 private ProgressBar mProgressBar; // 頭布局的進(jìn)度條
 private TextView tvState; // 頭布局的狀態(tài)
 private TextView tvLastUpdateTime; // 頭布局的最后更新時(shí)間

 private OnRefreshListener mOnRefershListener;
 private boolean isScrollToBottom; // 是否滑動(dòng)到底部
 private View footerView; // 腳布局的對(duì)象
 private int footerViewHeight; // 腳布局的高度
 private boolean isLoadingMore = false; // 是否正在加載更多中

 public RefreshListView(Context context, AttributeSet attrs) {
 super(context, attrs);
 initHeaderView();
 initFooterView();
 this.setOnScrollListener(this);
 }

 /**
 * 初始化腳布局
 */
 private void initFooterView() {
 footerView = View.inflate(getContext(), R.layout.listview_footer, null);
 footerView.measure(0, 0);
 footerViewHeight = footerView.getMeasuredHeight();
 footerView.setPadding(0, -footerViewHeight, 0, 0);
 this.addFooterView(footerView);
 }

 /**
 * 初始化頭布局
 */
 private void initHeaderView() {
 headerView = View.inflate(getContext(), R.layout.listview_header, null);
 ivArrow = (ImageView) headerView
  .findViewById(R.id.iv_listview_header_arrow);
 mProgressBar = (ProgressBar) headerView
  .findViewById(R.id.pb_listview_header);
 tvState = (TextView) headerView
  .findViewById(R.id.tv_listview_header_state);
 tvLastUpdateTime = (TextView) headerView
  .findViewById(R.id.tv_listview_header_last_update_time);

 // 設(shè)置最后刷新時(shí)間
 tvLastUpdateTime.setText("最后刷新時(shí)間: " + getLastUpdateTime());

 headerView.measure(0, 0); // 系統(tǒng)會(huì)幫我們測(cè)量出headerView的高度
 headerViewHeight = headerView.getMeasuredHeight();
 headerView.setPadding(0, -headerViewHeight, 0, 0);
 this.addHeaderView(headerView); // 向ListView的頂部添加一個(gè)view對(duì)象
 initAnimation();
 }

 /**
 * 獲得系統(tǒng)的最新時(shí)間
 *
 * @return
 */
 private String getLastUpdateTime() {
 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
 return sdf.format(System.currentTimeMillis());
 }

 /**
 * 初始化動(dòng)畫(huà)
 */
 private void initAnimation() {
 upAnimation = new RotateAnimation(0f, -180f,
  Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
  0.5f);
 upAnimation.setDuration(500);
 upAnimation.setFillAfter(true); // 動(dòng)畫(huà)結(jié)束后, 停留在結(jié)束的位置上

 downAnimation = new RotateAnimation(-180f, -360f,
  Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
  0.5f);
 downAnimation.setDuration(500);
 downAnimation.setFillAfter(true); // 動(dòng)畫(huà)結(jié)束后, 停留在結(jié)束的位置上
 }

 @Override
 public boolean onTouchEvent(MotionEvent ev) {
 switch (ev.getAction()) {
  case MotionEvent.ACTION_DOWN :
  downY = (int) ev.getY();
  break;
  case MotionEvent.ACTION_MOVE :
  int moveY = (int) ev.getY();
  // 移動(dòng)中的y - 按下的y = 間距.
  int diff = (moveY - downY) / 2;
  // -頭布局的高度 + 間距 = paddingTop
  int paddingTop = -headerViewHeight + diff;
  // 如果: -頭布局的高度 > paddingTop的值 執(zhí)行super.onTouchEvent(ev);
  if (firstVisibleItemPosition == 0
   && -headerViewHeight < paddingTop) {
   if (paddingTop > 0 && currentState == DOWN_PULL_REFRESH) { // 完全顯示了.
   Log.i(TAG, "松開(kāi)刷新");
   currentState = RELEASE_REFRESH;
   refreshHeaderView();
   } else if (paddingTop < 0
    && currentState == RELEASE_REFRESH) { // 沒(méi)有顯示完全
   Log.i(TAG, "下拉刷新");
   currentState = DOWN_PULL_REFRESH;
   refreshHeaderView();
   }
   // 下拉頭布局
   headerView.setPadding(0, paddingTop, 0, 0);
   return true;
  }
  break;
  case MotionEvent.ACTION_UP :
  // 判斷當(dāng)前的狀態(tài)是松開(kāi)刷新還是下拉刷新
  if (currentState == RELEASE_REFRESH) {
   Log.i(TAG, "刷新數(shù)據(jù).");
   // 把頭布局設(shè)置為完全顯示狀態(tài)
   headerView.setPadding(0, 0, 0, 0);
   // 進(jìn)入到正在刷新中狀態(tài)
   currentState = REFRESHING;
   refreshHeaderView();

   if (mOnRefershListener != null) {
   mOnRefershListener.onDownPullRefresh(); // 調(diào)用使用者的監(jiān)聽(tīng)方法
   }
  } else if (currentState == DOWN_PULL_REFRESH) {
   // 隱藏頭布局
   headerView.setPadding(0, -headerViewHeight, 0, 0);
  }
  break;
  default :
  break;
 }
 return super.onTouchEvent(ev);
 }

 /**
 * 根據(jù)currentState刷新頭布局的狀態(tài)
 */
 private void refreshHeaderView() {
 switch (currentState) {
  case DOWN_PULL_REFRESH : // 下拉刷新?tīng)顟B(tài)
  tvState.setText("下拉刷新");
  ivArrow.startAnimation(downAnimation); // 執(zhí)行向下旋轉(zhuǎn)
  break;
  case RELEASE_REFRESH : // 松開(kāi)刷新?tīng)顟B(tài)
  tvState.setText("松開(kāi)刷新");
  ivArrow.startAnimation(upAnimation); // 執(zhí)行向上旋轉(zhuǎn)
  break;
  case REFRESHING : // 正在刷新中狀態(tài)
  ivArrow.clearAnimation();
  ivArrow.setVisibility(View.GONE);
  mProgressBar.setVisibility(View.VISIBLE);
  tvState.setText("正在刷新中...");
  break;
  default :
  break;
 }
 }

 /**
 * 當(dāng)滾動(dòng)狀態(tài)改變時(shí)回調(diào)
 */
 @Override
 public void onScrollStateChanged(AbsListView view, int scrollState) {

 if (scrollState == SCROLL_STATE_IDLE
  || scrollState == SCROLL_STATE_FLING) {
  // 判斷當(dāng)前是否已經(jīng)到了底部
  if (isScrollToBottom && !isLoadingMore) {
  isLoadingMore = true;
  // 當(dāng)前到底部
  Log.i(TAG, "加載更多數(shù)據(jù)");
  footerView.setPadding(0, 0, 0, 0);
  this.setSelection(this.getCount());

  if (mOnRefershListener != null) {
   mOnRefershListener.onLoadingMore();
  }
  }
 }
 }

 /**
 * 當(dāng)滾動(dòng)時(shí)調(diào)用
 *
 * @param firstVisibleItem
 *  當(dāng)前屏幕顯示在頂部的item的position
 * @param visibleItemCount
 *  當(dāng)前屏幕顯示了多少個(gè)條目的總數(shù)
 * @param totalItemCount
 *  ListView的總條目的總數(shù)
 */
 @Override
 public void onScroll(AbsListView view, int firstVisibleItem,
    int visibleItemCount, int totalItemCount) {
 firstVisibleItemPosition = firstVisibleItem;

 if (getLastVisiblePosition() == (totalItemCount - 1)) {
  isScrollToBottom = true;
 } else {
  isScrollToBottom = false;
 }
 }

 /**
 * 設(shè)置刷新監(jiān)聽(tīng)事件
 *
 * @param listener
 */
 public void setOnRefreshListener(OnRefreshListener listener) {
 mOnRefershListener = listener;
 }

 /**
 * 隱藏頭布局
 */
 public void hideHeaderView() {
 headerView.setPadding(0, -headerViewHeight, 0, 0);
 ivArrow.setVisibility(View.VISIBLE);
 mProgressBar.setVisibility(View.GONE);
 tvState.setText("下拉刷新");
 tvLastUpdateTime.setText("最后刷新時(shí)間: " + getLastUpdateTime());
 currentState = DOWN_PULL_REFRESH;
 }

 /**
 * 隱藏腳布局
 */
 public void hideFooterView() {
 footerView.setPadding(0, -footerViewHeight, 0, 0);
 isLoadingMore = false;
 }
}

接下來(lái)再運(yùn)行主Activity使用就行了

package jiexinkeji.com.shuaxin;

import android.app.Activity;
import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends Activity implements OnRefreshListener {

 private List<String> textList;
 private MyAdapter adapter;
 private RefreshListView rListView;

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

 rListView = (RefreshListView) findViewById(R.id.refreshlistview);
 textList = new ArrayList<String>();
 for (int i = 0; i < 25; i++) {
  textList.add("這是一條ListView的數(shù)據(jù)" + i);
 }
 adapter = new MyAdapter();
 rListView.setAdapter(adapter);
 rListView.setOnRefreshListener(this);
 }

 private class MyAdapter extends BaseAdapter {

 @Override
 public int getCount() {
  // TODO Auto-generated method stub
  return textList.size();
 }

 @Override
 public Object getItem(int position) {
  // TODO Auto-generated method stub
  return textList.get(position);
 }

 @Override
 public long getItemId(int position) {
  // TODO Auto-generated method stub
  return position;
 }

 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
  // TODO Auto-generated method stub
  TextView textView = new TextView(MainActivity.this);
  textView.setText(textList.get(position));
  textView.setTextSize(18.0f);
  return textView;
 }

 }

 @Override
 public void onDownPullRefresh() {
 new AsyncTask<Void, Void, Void>() {

  @Override
  protected Void doInBackground(Void... params) {
  SystemClock.sleep(2000);
  for (int i = 0; i < 2; i++) {
   textList.add(0, "這是下拉刷新出來(lái)的數(shù)據(jù)" + i);
  }
  return null;
  }

  @Override
  protected void onPostExecute(Void result) {
  adapter.notifyDataSetChanged();
  rListView.hideHeaderView();
  }
 }.execute(new Void[]{});
 }

 @Override
 public void onLoadingMore() {
 new AsyncTask<Void, Void, Void>() {

  @Override
  protected Void doInBackground(Void... params) {
  SystemClock.sleep(5000);

  textList.add("這是加載更多出來(lái)的數(shù)據(jù)1");
  textList.add("這是加載更多出來(lái)的數(shù)據(jù)2");
  textList.add("這是加載更多出來(lái)的數(shù)據(jù)3");
  return null;
  }

  @Override
  protected void onPostExecute(Void result) {
  adapter.notifyDataSetChanged();

  // 控制腳布局隱藏
  rListView.hideFooterView();
  }
 }.execute(new Void[]{});
 }

}

以上就是本文的全部?jī)?nèi)容,希望對(duì)大家的學(xué)習(xí)有所幫助,也希望大家多多支持腳本之家。

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