The simplest and most efficient way to handle ScrollView nested ListView in Android

The first time to write a blog, the wrong place you can point out;

We all know that in ScrollView nested Listview,listview will be displayed incomplete, unable to calculate the height of the ListView, to resolve the display of the ListView and other layouts in a sliding interface, there are two methods;

The first kind: to let the height of the ListView Show All, then this will be the ListView to encapsulate, reset the height; code is as follows:

public class ListviewforscrollviewExtends ListView {
   Public Listviewforscrollview (Context context) {
      Super (context);
}

   Public Listviewforscrollview (context context, AttributeSet Attrs) {
 Super (context, attrs);
}

 Public Listviewforscrollview (context context, AttributeSet attrs,
 int Defstyle) {
 Super (context, attrs, Defstyle);
}

 /**
*Rewriteonmeasure(), reaching theListviewAdaptScrollViewThe effect
 */
   @Override 
  protected void Onmeasure (int Widthmeasurespec, int heightmeasurespec) {
 int Expandspec = Measurespec.makemeasurespec (Integer.2, 
 Measurespec.at_most); 
 super.onmeasure (Widthmeasurespec, Expandspec); 
} 
} 
 
             two of these input parameters:
WidthmeasurespeclevelWidth
HeightmeasurespecVerticalHeight
These two requirements are coded according to the View.measurespec class.
See View.measurespec for a description of this class: This class wraps the layout request passed down from the parent and passes it to the child.
Each of the MEASURESPEC represents a requirement for width or height.
Each of the MEASURESPEC has a size (size) and a pattern (mode).
Measurespec.at_most indicates that a sub-layout can choose a pattern of any size according to its size
Integer.max_value >> 2 represents a value of 2 for the 31-square-1 constant, which represents the maximum value that the int type can represent.

The     Second approach: to implement a sliding interface that includes a ListView, can be implemented by adding headerview or Footerview to the ListView, with the following code:

MView = View. Inflate (mcontext, r.layout.  this);  

Mistview = (ListView)Mview.findviewbyid (r.id.  Lv_card); 

headerview = View. inflate (mcontext, r.layout.< Span style= "color: #660e7a; Font-weight:bold; Font-style:italic; " >top, null);      
 footerview = View. inflate (mcontext, r.layout.< Span style= "color: #660e7a; Font-weight:bold; Font-style:italic; " >foot, null); 
               

mtextnotexc = (TextView) headerview.findviewbyid (R.id. friendtips = (ImageView) headerview.findviewbyid (R.id.      
 allnumber = (TextView) footerview.findviewbyid (R.id. llnumber = (linearlayout) footerview.findviewbyid (R.id.              

mlistview.addheaderview ( Headerview, null, false);     < br>  mlistview.addfooterview ( footerview,  null,  false);  
 
              < Span style= "color: #000080;" >< Span style= "color: #660e7a;" > add the top and tail layouts in the ListView like this, and it's better than the first, and it doesn't have to load all the data at once, Can be used almost the same as the usual ListView, support paging loading;            < Span style= "color: #660e7a; Font-weight:bold; " > < Span> 
                 

< Span style= "color: #808080; Font-style:italic; Font-family: ' The song Body '; > < Span style= "color: #000080; Font-weight:bold; " >                  

The simplest and most efficient way to handle ScrollView nested ListView in Android