Android-PullToRefresh(二)Android-PullToRefresh详解


转载于：/article/1580293.html

1、ListView下拉刷新快速入门
pull-to-refresh对ListView进行了封装，叫做：PullToRefreshListView，用法和listview没什么区别，下面看demo.

布局文件：

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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<com.handmark.pulltorefresh.library.PullToRefreshListView
xmlns:ptr="http://schemas.android.com/apk/res-auto"
android:id="@+id/pull_refresh_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:cacheColorHint="#00000000"
android:divider="#19000000"
android:dividerHeight="4dp"
android:fadingEdge="none"
android:fastScrollEnabled="false"
android:footerDividersEnabled="false"
android:headerDividersEnabled="false"
android:smoothScrollbar="true" >
</com.handmark.pulltorefresh.library.PullToRefreshListView>

</RelativeLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<com.handmark.pulltorefresh.library.PullToRefreshListView
xmlns:ptr="http://schemas.android.com/apk/res-auto"
android:id="@+id/pull_refresh_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:cacheColorHint="#00000000"
android:divider="#19000000"
android:dividerHeight="4dp"
android:fadingEdge="none"
android:fastScrollEnabled="false"
android:footerDividersEnabled="false"
android:headerDividersEnabled="false"
android:smoothScrollbar="true" >
</com.handmark.pulltorefresh.library.PullToRefreshListView>

</RelativeLayout>

声明了一个PullToRefreshListView，里面所有的属性都是ListView的，没有任何其他属性，当然了PullToRefreshListView也提供了很多配置的属性，后面会详细介绍。

Activity的代码:

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package com.example.zhy_pulltorefreash_chenyoca;

import java.util.LinkedList;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.format.DateUtils;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

public class PullToRefreshListActivity extends Activity
{

private LinkedList<String> mListItems;
/**
* 上拉刷新的控件
*/
private PullToRefreshListView mPullRefreshListView;

private ArrayAdapter<String> mAdapter;

private int mItemCount = 9;

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 得到控件
mPullRefreshListView = (PullToRefreshListView) findViewById(R.id.pull_refresh_list);
//初始化数据
initDatas();
//设置适配器
mAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, mListItems);
mPullRefreshListView.setAdapter(mAdapter);
// 设置监听事件
mPullRefreshListView
.setOnRefreshListener(new OnRefreshListener<ListView>()
{
@Override
public void onRefresh(
PullToRefreshBase<ListView> refreshView)
{
String label = DateUtils.formatDateTime(
getApplicationContext(),
System.currentTimeMillis(),
DateUtils.FORMAT_SHOW_TIME
| DateUtils.FORMAT_SHOW_DATE
| DateUtils.FORMAT_ABBREV_ALL);
// 显示最后更新的时间
refreshView.getLoadingLayoutProxy()
.setLastUpdatedLabel(label);

// 模拟加载任务
new GetDataTask().execute();
}
});

}

private void initDatas()
{
// 初始化数据和数据源
mListItems = new LinkedList<String>();

for (int i = 0; i < mItemCount; i++)
{
mListItems.add("" + i);
}
}

private class GetDataTask extends AsyncTask<Void, Void, String>
{

@Override
protected String doInBackground(Void... params)
{
try
{
Thread.sleep(2000);
} catch (InterruptedException e)
{
}
return "" + (mItemCount++);
}

@Override
protected void onPostExecute(String result)
{
mListItems.add(result);
mAdapter.notifyDataSetChanged();
// Call onRefreshComplete when the list has been refreshed.
mPullRefreshListView.onRefreshComplete();
}
}

}

package com.example.zhy_pulltorefreash_chenyoca;

import java.util.LinkedList;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.format.DateUtils;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

public class PullToRefreshListActivity extends Activity
{

private LinkedList<String> mListItems;
/**
* 上拉刷新的控件
*/
private PullToRefreshListView mPullRefreshListView;

private ArrayAdapter<String> mAdapter;

private int mItemCount = 9;

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 得到控件
mPullRefreshListView = (PullToRefreshListView) findViewById(R.id.pull_refresh_list);
//初始化数据
initDatas();
//设置适配器
mAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, mListItems);
mPullRefreshListView.setAdapter(mAdapter);
// 设置监听事件
mPullRefreshListView
.setOnRefreshListener(new OnRefreshListener<ListView>()
{
@Override
public void onRefresh(
PullToRefreshBase<ListView> refreshView)
{
String label = DateUtils.formatDateTime(
getApplicationContext(),
System.currentTimeMillis(),
DateUtils.FORMAT_SHOW_TIME
| DateUtils.FORMAT_SHOW_DATE
| DateUtils.FORMAT_ABBREV_ALL);
// 显示最后更新的时间
refreshView.getLoadingLayoutProxy()
.setLastUpdatedLabel(label);

// 模拟加载任务
new GetDataTask().execute();
}
});

}

private void initDatas()
{
// 初始化数据和数据源
mListItems = new LinkedList<String>();

for (int i = 0; i < mItemCount; i++)
{
mListItems.add("" + i);
}
}

private class GetDataTask extends AsyncTask<Void, Void, String>
{

@Override
protected String doInBackground(Void... params)
{
try
{
Thread.sleep(2000);
} catch (InterruptedException e)
{
}
return "" + (mItemCount++);
}

@Override
protected void onPostExecute(String result)
{
mListItems.add(result);
mAdapter.notifyDataSetChanged();
// Call onRefreshComplete when the list has been refreshed.
mPullRefreshListView.onRefreshComplete();
}
}

}

代码极其简单，得到PullToRefreshListView控件，然后像ListView一样设置数据集。当然了，我们有下拉刷新，所以必须设置下拉刷新的回调：

setOnRefreshListener(new OnRefreshListener<ListView>(){}

我们在回调中模拟了一个异步任务，加载了一个Item。

效果图：



下拉时，执行我们的GetDataTask任务，任务执行完成后在onPostExecute中
调用mPullRefreshListView.onRefreshComplete();完成刷新。

是不是分分钟实现下拉刷新。当然了，你可能会有疑问，下拉刷新的指示器上的文字可以自定义吗？那个图片可以换成箭头吗？说好的上拉加载更多呢？后面会一一添加~

2、添加上拉加载更多
如过希望实现上拉加载更多，那么首先需要在布局文件的声明属性中添加一个属性，用于指定目前的下拉模式：

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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<com.handmark.pulltorefresh.library.PullToRefreshListView
xmlns:ptr="http://schemas.android.com/apk/res-auto"
android:id="@+id/pull_refresh_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:cacheColorHint="#00000000"
android:divider="#19000000"
android:dividerHeight="4dp"
android:fadingEdge="none"
android:fastScrollEnabled="false"
android:footerDividersEnabled="false"
android:headerDividersEnabled="false"
android:smoothScrollbar="true"
ptr:ptrMode="both" >
</com.handmark.pulltorefresh.library.PullToRefreshListView>

</RelativeLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<com.handmark.pulltorefresh.library.PullToRefreshListView
xmlns:ptr="http://schemas.android.com/apk/res-auto"
android:id="@+id/pull_refresh_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:cacheColorHint="#00000000"
android:divider="#19000000"
android:dividerHeight="4dp"
android:fadingEdge="none"
android:fastScrollEnabled="false"
android:footerDividersEnabled="false"
android:headerDividersEnabled="false"
android:smoothScrollbar="true"
ptr:ptrMode="both" >
</com.handmark.pulltorefresh.library.PullToRefreshListView>

</RelativeLayout>

我们添加了一个属性：ptr:ptrMode="both" ，意思：上拉和下拉都支持。

可选值为：disabled（禁用下拉刷新），pullFromStart（仅支持下拉刷新），pullFromEnd（仅支持上拉刷新），both（二者都支持），manualOnly（只允许手动触发）

当然了，如果你不喜欢在布局文件中指定，完全可以使用代码设置，在onCreate里面写：mPullRefreshListView.setMode(Mode.BOTH);//设置你需要的模式

设置了模式为双向都支持，当然必须为上拉和下拉分别设置回调，请看下面的代码：

[java]
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package com.example.zhy_pulltorefreash_chenyoca;

import java.util.LinkedList;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.format.DateUtils;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

public class PullToRefreshListActivity extends Activity
{

private LinkedList<String> mListItems;
/**
* 上拉刷新的控件
*/
private PullToRefreshListView mPullRefreshListView;

private ArrayAdapter<String> mAdapter;

private int mItemCount = 9;

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 得到控件
mPullRefreshListView = (PullToRefreshListView) findViewById(R.id.pull_refresh_list);
mPullRefreshListView.setMode(Mode.BOTH);
// 初始化数据
initDatas();
// 设置适配器
mAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, mListItems);
mPullRefreshListView.setAdapter(mAdapter);

mPullRefreshListView
.setOnRefreshListener(new OnRefreshListener2<ListView>()
{
@Override
public void onPullDownToRefresh(
PullToRefreshBase<ListView> refreshView)
{
Log.e("TAG", "onPullDownToRefresh");
//这里写下拉刷新的任务
new GetDataTask().execute();
}

@Override
public void onPullUpToRefresh(
PullToRefreshBase<ListView> refreshView)
{
Log.e("TAG", "onPullUpToRefresh");
//这里写上拉加载更多的任务
new GetDataTask().execute();
}
});

}

private void initDatas()
{
// 初始化数据和数据源
mListItems = new LinkedList<String>();

for (int i = 0; i < mItemCount; i++)
{
mListItems.add("" + i);
}
}

private class GetDataTask extends AsyncTask<Void, Void, String>
{

@Override
protected String doInBackground(Void... params)
{
try
{
Thread.sleep(2000);
} catch (InterruptedException e)
{
}
return "" + (mItemCount++);
}

@Override
protected void onPostExecute(String result)
{
mListItems.add(result);
mAdapter.notifyDataSetChanged();
// Call onRefreshComplete when the list has been refreshed.
mPullRefreshListView.onRefreshComplete();
}
}

package com.example.zhy_pulltorefreash_chenyoca;

import java.util.LinkedList;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.format.DateUtils;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

public class PullToRefreshListActivity extends Activity
{

private LinkedList<String> mListItems;
/**
* 上拉刷新的控件
*/
private PullToRefreshListView mPullRefreshListView;

private ArrayAdapter<String> mAdapter;

private int mItemCount = 9;

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 得到控件
mPullRefreshListView = (PullToRefreshListView) findViewById(R.id.pull_refresh_list);
mPullRefreshListView.setMode(Mode.BOTH);
// 初始化数据
initDatas();
// 设置适配器
mAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, mListItems);
mPullRefreshListView.setAdapter(mAdapter);

mPullRefreshListView
.setOnRefreshListener(new OnRefreshListener2<ListView>()
{
@Override
public void onPullDownToRefresh(
PullToRefreshBase<ListView> refreshView)
{
Log.e("TAG", "onPullDownToRefresh");
//这里写下拉刷新的任务
new GetDataTask().execute();
}

@Override
public void onPullUpToRefresh(
PullToRefreshBase<ListView> refreshView)
{
Log.e("TAG", "onPullUpToRefresh");
//这里写上拉加载更多的任务
new GetDataTask().execute();
}
});

}

private void initDatas()
{
// 初始化数据和数据源
mListItems = new LinkedList<String>();

for (int i = 0; i < mItemCount; i++)
{
mListItems.add("" + i);
}
}

private class GetDataTask extends AsyncTask<Void, Void, String>
{

@Override
protected String doInBackground(Void... params)
{
try
{
Thread.sleep(2000);
} catch (InterruptedException e)
{
}
return "" + (mItemCount++);
}

@Override
protected void onPostExecute(String result)
{
mListItems.add(result);
mAdapter.notifyDataSetChanged();
// Call onRefreshComplete when the list has been refreshed.
mPullRefreshListView.onRefreshComplete();
}
}

和第一段的代码只有一个地方有区别，可能很难发现：

mPullRefreshListView.setOnRefreshListener(new OnRefreshListener2<ListView>(){});注意这里的接口类型是OnRefreshListener2，多了个2，和上面的不一样，这个接口包含两个方法，一个上拉回调，一个下拉回调。好了，这样我们就成功添加了上拉与下拉，并且分别可以控制其回调代码。

效果图：



咋样，是不是也很简单~注:如果你的上拉和下拉需求是执行一样的代码，那么你可以继续注册OnRefreshListener接口，上拉和下拉都会执行同一个方法。

接下来介绍如何使用带下拉刷新和加载更多的的GridView和自定义样式~

3、带下拉和上拉的GridView ( PullToRefreshGridView )
同样的pull-to-refresh把GridView封装为：PullToRefreshGridView 。用法和PullToRefreshListView一摸一样~

首先看主布局文件：

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<!-- The PullToRefreshGridView replaces a standard GridView widget. -->

<com.handmark.pulltorefresh.library.PullToRefreshGridView
xmlns:ptr="http://schemas.android.com/apk/res-auto"
android:id="@+id/pull_refresh_grid"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="100dp"
android:gravity="center_horizontal"
android:horizontalSpacing="1dp"
android:numColumns="auto_fit"
android:stretchMode="columnWidth"
android:verticalSpacing="1dp"
ptr:ptrDrawable="@drawable/ic_launcher"
ptr:ptrMode="both" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<!-- The PullToRefreshGridView replaces a standard GridView widget. -->

<com.handmark.pulltorefresh.library.PullToRefreshGridView
xmlns:ptr="http://schemas.android.com/apk/res-auto"
android:id="@+id/pull_refresh_grid"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="100dp"
android:gravity="center_horizontal"
android:horizontalSpacing="1dp"
android:numColumns="auto_fit"
android:stretchMode="columnWidth"
android:verticalSpacing="1dp"
ptr:ptrDrawable="@drawable/ic_launcher"
ptr:ptrMode="both" />

</LinearLayout>

PullToRefreshGridView 的item的布局文件：

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<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/id_grid_item_text"
android:layout_width="100dp"
android:gravity="center"
android:textColor="#ffffff"
android:textSize="16sp"
android:background="#000000"
android:layout_height="100dp" />

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/id_grid_item_text"
android:layout_width="100dp"
android:gravity="center"
android:textColor="#ffffff"
android:textSize="16sp"
android:background="#000000"
android:layout_height="100dp" />

接下来就是Activity的代码了：

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public class PullToRefreshGridActivity extends Activity
{
private LinkedList<String> mListItems;
private PullToRefreshGridView mPullRefreshListView;
private ArrayAdapter<String> mAdapter;

private int mItemCount = 10;

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ptr_grid);
// 得到控件
mPullRefreshListView = (PullToRefreshGridView) findViewById(R.id.pull_refresh_grid);

// 初始化数据和数据源
initDatas();

mAdapter = new ArrayAdapter<String>(this, R.layout.grid_item,
R.id.id_grid_item_text, mListItems);
mPullRefreshListView.setAdapter(mAdapter);

mPullRefreshListView
.setOnRefreshListener(new OnRefreshListener2<GridView>()
{

@Override
public void onPullDownToRefresh(
PullToRefreshBase<GridView> refreshView)
{
Log.e("TAG", "onPullDownToRefresh"); // Do work to
String label = DateUtils.formatDateTime(
getApplicationContext(),
System.currentTimeMillis(),
DateUtils.FORMAT_SHOW_TIME
| DateUtils.FORMAT_SHOW_DATE
| DateUtils.FORMAT_ABBREV_ALL);

// Update the LastUpdatedLabel
refreshView.getLoadingLayoutProxy()
.setLastUpdatedLabel(label);

new GetDataTask().execute();
}

@Override
public void onPullUpToRefresh(
PullToRefreshBase<GridView> refreshView)
{
Log.e("TAG", "onPullUpToRefresh"); // Do work to refresh
// the list here.
new GetDataTask().execute();
}
});
}

private void initDatas()
{
mListItems = new LinkedList<String>();

for (int i = 0; i < mItemCount; i++)
{
mListItems.add(i + "");
}
}

private class GetDataTask extends AsyncTask<Void, Void, Void>
{

@Override
protected Void doInBackground(Void... params)
{
try
{
Thread.sleep(2000);
} catch (InterruptedException e)
{
}
return null;
}

@Override
protected void onPostExecute(Void result)
{
mListItems.add("" + mItemCount++);
mAdapter.notifyDataSetChanged();
// Call onRefreshComplete when the list has been refreshed.
mPullRefreshListView.onRefreshComplete();
}
}

public class PullToRefreshGridActivity extends Activity
{
private LinkedList<String> mListItems;
private PullToRefreshGridView mPullRefreshListView;
private ArrayAdapter<String> mAdapter;

private int mItemCount = 10;

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ptr_grid);
// 得到控件
mPullRefreshListView = (PullToRefreshGridView) findViewById(R.id.pull_refresh_grid);

// 初始化数据和数据源
initDatas();

mAdapter = new ArrayAdapter<String>(this, R.layout.grid_item,
R.id.id_grid_item_text, mListItems);
mPullRefreshListView.setAdapter(mAdapter);

mPullRefreshListView
.setOnRefreshListener(new OnRefreshListener2<GridView>()
{

@Override
public void onPullDownToRefresh(
PullToRefreshBase<GridView> refreshView)
{
Log.e("TAG", "onPullDownToRefresh"); // Do work to
String label = DateUtils.formatDateTime(
getApplicationContext(),
System.currentTimeMillis(),
DateUtils.FORMAT_SHOW_TIME
| DateUtils.FORMAT_SHOW_DATE
| DateUtils.FORMAT_ABBREV_ALL);

// Update the LastUpdatedLabel
refreshView.getLoadingLayoutProxy()
.setLastUpdatedLabel(label);

new GetDataTask().execute();
}

@Override
public void onPullUpToRefresh(
PullToRefreshBase<GridView> refreshView)
{
Log.e("TAG", "onPullUpToRefresh"); // Do work to refresh
// the list here.
new GetDataTask().execute();
}
});
}

private void initDatas()
{
mListItems = new LinkedList<String>();

for (int i = 0; i < mItemCount; i++)
{
mListItems.add(i + "");
}
}

private class GetDataTask extends AsyncTask<Void, Void, Void>
{

@Override
protected Void doInBackground(Void... params)
{
try
{
Thread.sleep(2000);
} catch (InterruptedException e)
{
}
return null;
}

@Override
protected void onPostExecute(Void result)
{
mListItems.add("" + mItemCount++);
mAdapter.notifyDataSetChanged();
// Call onRefreshComplete when the list has been refreshed.
mPullRefreshListView.onRefreshComplete();
}
}

基本上上例没有任何区别，直接看效果图吧：



效果还是不错的，如果你比较细心会发现，那个下拉刷新的转圈的图片咋变成机器人了，那是因为我在布局文件里面设置了：

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<com.handmark.pulltorefresh.library.PullToRefreshGridView
ptr:ptrDrawable="@drawable/ic_launcher"
...
/>

<com.handmark.pulltorefresh.library.PullToRefreshGridView
ptr:ptrDrawable="@drawable/ic_launcher"
...
/>

当然了这是旋转的效果，一般常用的还有，一个箭头倒置的效果，其实也很简单，一个属性：

ptr:ptrAnimationStyle="flip"

去掉 ptr:ptrDrawable="@drawable/ic_launcher"这个属性，如果你希望用下图默认的箭头，你也可以自定义。

添加后，箭头就是这个样子：



ptr:ptrAnimationStyle的取值：flip（翻转动画）， rotate（旋转动画） 。

ptr:ptrDrawable则就是设置图标了。

4、自定义下拉指示器文本内容等效果

可以在初始化完成mPullRefreshListView后，通过mPullRefreshListView.getLoadingLayoutProxy()可以得到一个ILoadingLayout对象，这个对象可以设置各种指示器中的样式、文本等。

[java]
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ILoadingLayout startLabels = mPullRefreshListView .getLoadingLayoutProxy(); startLabels.setPullLabel("你可劲拉，拉...");// 刚下拉时，显示的提示 startLabels.setRefreshingLabel("好嘞，正在刷新...");// 刷新时 startLabels.setReleaseLabel("你敢放，我就敢刷新...");// 下来达到一定距离时，显示的提示

ILoadingLayout startLabels = mPullRefreshListView
.getLoadingLayoutProxy();
startLabels.setPullLabel("你可劲拉，拉...");// 刚下拉时，显示的提示
startLabels.setRefreshingLabel("好嘞，正在刷新...");// 刷新时
startLabels.setReleaseLabel("你敢放，我就敢刷新...");// 下来达到一定距离时，显示的提示

如果你比较细心，会发现，前面我们设置上次刷新时间已经用到了：

// Update the LastUpdatedLabel

refreshView.getLoadingLayoutProxy().setLastUpdatedLabel(label);

现在的效果是：







默认是上拉和下拉的字同时改变的，如果我希望单独改变呢？

[java]
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private void initIndicator() { ILoadingLayout startLabels = mPullRefreshListView .getLoadingLayoutProxy(true, false); startLabels.setPullLabel("你可劲拉，拉...");// 刚下拉时，显示的提示 startLabels.setRefreshingLabel("好嘞，正在刷新...");// 刷新时 startLabels.setReleaseLabel("你敢放，我就敢刷新...");// 下来达到一定距离时，显示的提示 ILoadingLayout endLabels = mPullRefreshListView.getLoadingLayoutProxy( false, true); endLabels.setPullLabel("你可劲拉，拉2...");// 刚下拉时，显示的提示 endLabels.setRefreshingLabel("好嘞，正在刷新2...");// 刷新时 endLabels.setReleaseLabel("你敢放，我就敢刷新2...");// 下来达到一定距离时，显示的提示 }

private void initIndicator()
{
ILoadingLayout startLabels = mPullRefreshListView
.getLoadingLayoutProxy(true, false);
startLabels.setPullLabel("你可劲拉，拉...");// 刚下拉时，显示的提示
startLabels.setRefreshingLabel("好嘞，正在刷新...");// 刷新时
startLabels.setReleaseLabel("你敢放，我就敢刷新...");// 下来达到一定距离时，显示的提示

ILoadingLayout endLabels = mPullRefreshListView.getLoadingLayoutProxy(
false, true);
endLabels.setPullLabel("你可劲拉，拉2...");// 刚下拉时，显示的提示
endLabels.setRefreshingLabel("好嘞，正在刷新2...");// 刷新时
endLabels.setReleaseLabel("你敢放，我就敢刷新2...");// 下来达到一定距离时，显示的提示
}

mPullRefreshListView.getLoadingLayoutProxy(true, false);接收两个参数，为true,false返回设置下拉的ILoadingLayout；为false,true返回设置上拉的。

5、常用的一些属性
当然了，pull-to-refresh在xml中还能定义一些属性：

ptrMode，ptrDrawable，ptrAnimationStyle这三个上面已经介绍过。

ptrRefreshableViewBackground 设置整个mPullRefreshListView的背景色

ptrHeaderBackground 设置下拉Header或者上拉Footer的背景色

ptrHeaderTextColor 用于设置Header与Footer中文本的颜色

ptrHeaderSubTextColor 用于设置Header与Footer中上次刷新时间的颜色

ptrShowIndicator如果为true会在mPullRefreshListView中出现icon，右上角和右下角，挺有意思的。

ptrHeaderTextAppearance ， ptrSubHeaderTextAppearance分别设置拉Header或者上拉Footer中字体的类型颜色等等。

ptrRotateDrawableWhilePulling当动画设置为rotate时，下拉是是否旋转。

ptrScrollingWhileRefreshingEnabled刷新的时候，是否允许ListView或GridView滚动。觉得为true比较好。



ptrListViewExtrasEnabled 决定了Header，Footer以何种方式加入mPullRefreshListView，true为headView方式加入，就是滚动时刷新头部会一起滚动。

最后2个其实对于用户体验还是挺重要的，如果设置的时候考虑下~。其他的属性自己选择就好。

注：上述属性很多都可以代码控制，如果有需要可以直接mPullRefreshListView.set属性名 查看

以上为pull-to-refresh所有支持的属性~~

定义了一堆的效果：



右上、右下那个图标就是ptrShowIndicator。好了，大家可以按照自己的需求对着上面的属性解释配置。

在github上下载的例子，是依赖3个项目的，一个基本的library_pullToRefresh，一个PullToRefreshViewPager，一个PullToRefreshListFragment ；

上面介绍的例子只依赖library_pullToRefresh，其他两个依赖不用导入。

好了，如果你觉得本篇博客对你有用，就点个赞~留个言吧

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