Android Development's Custom dropdown flush head

Always use the Drop-down Refresh Library is Android-ultra-pull-to-refresh, itself this library with several styles of Drop-down refresh head, you can go git look, address https://github.com/liaohuqiu/ Android-ultra-pull-to-refresh. The most convenient is that we can customize all kinds of head. The recent project has a custom Drop-down head, which I studied for myself. The implementation effect is:

All we have to do is write a style XML file of our own, and then implement Ptruihandler this interface with the following code:

public class Loadmorefooterview extends Framelayout implements Ptruihandler {
Private Layoutinflater Inflater;

Drop-down Refresh view (header View)
Private ViewGroup Headview;

Drop Refresh Text
Private TextView Tvheadtitle;

Drop down icon
Private ImageView Ivwindmill;

Private Windmilldrawable drawable;

Public Loadmorefooterview {
This is (context, NULL);
}

Public Loadmorefooterview (context context, AttributeSet Attrs) {
This is (context, attrs, 0);
}

Public Loadmorefooterview (context context, AttributeSet attrs, int defstyleattr) {
Super (context, attrs, defstyleattr);
Init (context);
}

/**
* Initialization
*
* @param context
*/
private void init (context context) {

Inflater = Layoutinflater.from (context);
/**
* Head
*/
Headview = (viewgroup) inflater.inflate (R.layout.widget_header, this, true);
Ivwindmill = (ImageView) Headview.findviewbyid (R.id.iv_windmill);
Tvheadtitle = (TextView) Headview.findviewbyid (r.id.tv_head_title);
Ivwindmill.setvisibility (VISIBLE);
Ivwindmill.setimageresource (R.mipmap.icon_logo);
Tvheadtitle.settext ("Drop-down refresh");

}

@Override
public void Onuireset (Ptrframelayout ptrframelayout) {
Tvheadtitle.settext ("Drop-down refresh");

}

@Override
public void Onuirefreshprepare (Ptrframelayout ptrframelayout) {
Tvheadtitle.settext ("Drop-down refresh");
}

@Override
public void Onuirefreshbegin (Ptrframelayout ptrframelayout) {
Tvheadtitle.settext ("refreshing");

}

@Override
public void Onuirefreshcomplete (Ptrframelayout ptrframelayout) {
Ivwindmill.clearanimation ();
Tvheadtitle.settext ("Refresh complete");
}

@Override
public void Onuipositionchange (Ptrframelayout frame, Boolean isundertouch, byte status, Ptrindicator ptrindicator) {
Final int moffsettorefresh = Frame.getoffsettorefresh ();
Final int currentpos = Ptrindicator.getcurrentposy ();
Final int lastpos = Ptrindicator.getlastposy ();

if (currentpos < moffsettorefresh && lastpos >= moffsettorefresh) {
if (isundertouch && status = Ptrframelayout.ptr_status_prepare) {
Tvheadtitle.settext ("Drop-down refresh");
}
else if (currentpos > moffsettorefresh && lastpos <= moffsettorefresh) {
if (isundertouch && status = Ptrframelayout.ptr_status_prepare) {
Tvheadtitle.settext ("loosen refresh");
}
}

}

}

Use:

/* Create custom Refresh head View/*
Loadmorefooterview Header = new Loadmorefooterview (this);
/* Set Refresh head View * *
Ptr_view.setheaderview (header);
/* Set callback/*
Ptr_view.addptruihandler (header);
Ptr_view.setptrhandler (New Ptrhandler () {
@Override
public boolean Checkcandorefresh (ptrframelayout frame, view content, view header) {
Return Ptrdefaulthandler.checkcontentcanbepulleddown (frame, content, header);
}

@Override
public void Onrefreshbegin (Ptrframelayout frame) {
Ptr_view.postdelayed (New Runnable () {
@Override
public void Run () {

GetData ();
}
}, 2000);
}
});
/* Delay 100 seconds, automatic refresh * *
Ptr_view.postdelayed (New Runnable () {
@Override
public void Run () {
Ptr_view.autorefresh ();
}
}, 100);