先讲下这篇写啥东西，也就是这家伙（）写的一个上拉下拉刷新的Demo，连接https://github.com/fengcunhan/Android-PullToRefresh
东西弄下来之后，会看到library和sample 2个文件夹，至于library怎么用，先看看官网的资料http://developer.android.com/tools/projects/projects-eclipse.html#ReferencingLibraryProject
注意：如果勾选了library，那么这个项目是不能运行的，会提示：android library projects cannot be launched。所以注意了。
其实library怎么用，很简单，就是你新建个Android项目，在其他项目中复制.classpath和.project文件到library下面，使之成为一个Android项目（只是这个项目是被引用的项目），如果你不怕麻烦也可以新建一个Android项目，把有用的文件对应拷贝到新建的Android项目中。
sample文件夹也一样。在该例子中有4个，PullToRefreshExpandableListActivity，PullToRefreshGridActivity，PullToRefreshListActivity，PullToRefreshWebViewActivity
在应用开发中最常用的当属 PullToRefreshListActivity
接下来贴点代码如何把这个例子搬到自己的项目中：代码来源library中的，
com.handmark.pulltorefresh.library.internal.EmptyViewMethodAccessor
com.handmark.pulltorefresh.library.internal.LoadingLayout
com.handmark.pulltorefresh.library.PullToRefreshAdapterViewBase<T extends AbsListView>
com.handmark.pulltorefresh.library.PullToRefreshBase<T extends View>
com.handmark.pulltorefresh.library.PullToRefreshListView
这里面的5个类就可以组建你想要的上拉下拉组件，当然还需要一些res文件了
当然也需要改动:
com.handmark.pulltorefresh.library.PullToRefreshBase类中
<span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> init(Context context, AttributeSet attrs) {</span>
setOrientation(LinearLayout.VERTICAL);
touchSlop = ViewConfiguration.getTouchSlop();
// Styleables from XML first
//final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.PullToRefresh);
//mode = a.getInteger(R.styleable.PullToRefresh_mode, MODE_PULL_DOWN_TO_REFRESH);
//Styleables from XML modify last
mode = 0x3;
// Refreshable View
// By passing the attrs, we can add ListView/GridView params via XML
refreshableView = this.createRefreshableView(context, attrs);
this.addRefreshableView(context, refreshableView);
// Loading View Strings
String pullLabel = context.getString(R.string.pull_to_refresh_pull_label);
String refreshingLabel = context.getString(R.string.pull_to_refresh_refreshing_label);
String releaseLabel = context.getString(R.string.pull_to_refresh_release_label);
// Add Loading Views
if (mode == MODE_PULL_DOWN_TO_REFRESH || mode == MODE_BOTH) {
headerLayout = new LoadingLayout(context, MODE_PULL_DOWN_TO_REFRESH, releaseLabel, pullLabel,
refreshingLabel);
addView(headerLayout, 0, new LinearLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
measureView(headerLayout);
headerHeight = headerLayout.getMeasuredHeight();
}
if (mode == MODE_PULL_UP_TO_REFRESH || mode == MODE_BOTH) {
footerLayout = new LoadingLayout(context, MODE_PULL_UP_TO_REFRESH, releaseLabel, pullLabel, refreshingLabel);
addView(footerLayout, new LinearLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
measureView(footerLayout);
headerHeight = footerLayout.getMeasuredHeight();
}
// Styleables from XML modify first
/*if (a.hasValue(R.styleable.PullToRefresh_headerTextColor)) {
final int color = a.getColor(R.styleable.PullToRefresh_headerTextColor, Color.BLACK);
if (null != headerLayout) {
headerLayout.setTextColor(color);
}
if (null != footerLayout) {
footerLayout.setTextColor(color);
}
}
if (a.hasValue(R.styleable.PullToRefresh_headerBackground)) {
this.setBackgroundResource(a.getResourceId(R.styleable.PullToRefresh_headerBackground, Color.WHITE));
}
if (a.hasValue(R.styleable.PullToRefresh_adapterViewBackground)) {
refreshableView.setBackgroundResource(a.getResourceId(R.styleable.PullToRefresh_adapterViewBackground,
Color.WHITE));
}
a.recycle();*/
//Styleables from XML modify last
if (null != headerLayout) {
headerLayout.setTextColor(Color.BLACK);
}
if (null != footerLayout) {
footerLayout.setTextColor(Color.BLACK);
}
// Hide Loading Views
switch (mode) {
case MODE_BOTH:
setPadding(0, -headerHeight, 0, –headerHeight);
break;
case MODE_PULL_UP_TO_REFRESH:
setPadding(0, 0, 0, –headerHeight);
break;
case MODE_PULL_DOWN_TO_REFRESH:
default:
setPadding(0, -headerHeight, 0, 0);
break;
}
// If we’re not using MODE_BOTH, then just set currentMode to current
// mode
if (mode != MODE_BOTH) {
currentMode = mode;
}
}
修改前和修改后的代码都有注释
至于这个组件该怎么用还是自己琢磨把///
欢迎拍砖
————————————————————————–
前段时间由于工作太忙，故没有上传demo，特此补上…
Threew_PullToRefresh-master.rar
————————————————————————
最近在网上查了点资料，关于Android Library的参考资料
官网的资料
Android Library
Android 公共库的建立方法