Android ListView中 每一项都有不同的布局

实现代码

Adapter的代码

其中:ViewHolder分别是三个不同的布局,也就是ListView中每一项的布局

TYPE_1...是三种类型.

在使用不同布局的时候,getItemViewType和getViewType不能少,一般是不用这两个函数的重载的

[java] view
plaincopy

class RunRankAdapter extends BaseAdapter {

ArrayList<HashMap<String, Object>> ls;

Context mContext;

LinearLayout linearLayout = null;

LayoutInflater inflater;

TextView tex;

final int VIEW_TYPE = 3;

final int TYPE_1 = 0;

final int TYPE_2 = 1;

final int TYPE_3 = 2;



public RunRankAdapter(Context context,

ArrayList<HashMap<String, Object>> list) {

ls = list;

mContext = context;

}



@Override

public int getCount() {

return ls.size();

}



@Override

public Object getItem(int position) {

return ls.get(position);

}



@Override

public long getItemId(int position) {

return 0;

}



// 每个convert view都会调用此方法，获得当前所需要的view样式

@Override

public int getItemViewType(int position) {

int p = position;

if (p == 0)

return TYPE_1;

else if (p == 1)

return TYPE_2;

else

return TYPE_3;

}



@Override

public int getViewTypeCount() {

return 3;

}



@Override

public View getView(int position, View convertView, ViewGroup parent) {

ViewHolder1 holder1 = null;

ViewHolder2 holder2 = null;

ViewHolder3 holder3 = null;

int type = getItemViewType(position);

if (convertView == null) {

inflater = LayoutInflater.from(mContext);

// 按当前所需的样式，确定new的布局

switch (type) {

case TYPE_1:



convertView = inflater.inflate(R.layout.item_runrank1,

parent, false);

holder1 = new ViewHolder1();

holder1.rank1 = (TextView) convertView

.findViewById(R.id.tv_list1_rank);

holder1.time1 = (TextView) convertView

.findViewById(R.id.tv_list1_time);

convertView.setTag(holder1);

break;

case TYPE_2:

convertView = inflater.inflate(R.layout.item_runrank2,

parent, false);

holder2 = new ViewHolder2();

holder2.rank2 = (TextView) convertView

.findViewById(R.id.tv_list2_rank);

holder2.time2 = (TextView) convertView

.findViewById(R.id.tv_list2_time);

convertView.setTag(holder2);

break;

case TYPE_3:

convertView = inflater.inflate(R.layout.item_runrank3,

parent, false);

holder3 = new ViewHolder3();

holder3.rank3 = (TextView) convertView

.findViewById(R.id.tv_list3_rank);

holder3.time3 = (TextView) convertView

.findViewById(R.id.tv_list3_time);

convertView.setTag(holder3);

break;

default:

break;

}



} else {

switch (type) {

case TYPE_1:

holder1 = (ViewHolder1) convertView.getTag();

break;

case TYPE_2:

holder2 = (ViewHolder2) convertView.getTag();

break;

case TYPE_3:

holder3 = (ViewHolder3) convertView.getTag();

break;

}

}

// 设置资源

switch (type) {

case TYPE_1:

holder1.rank1.setText("" + (position + 1));

holder1.time1.setText(ls.get(position).get("time").toString());

break;

case TYPE_2:

holder2.rank2.setText("" + (position + 1));

holder2.time2.setText(ls.get(position).get("time").toString());

holder2.totaldistance2.setText(ls.get(position)

break;

case TYPE_3:

holder3.rank3.setText("" + (position + 1));

holder3.time3.setText(ls.get(position).get("time").toString());

break;

}



return convertView;

}



public class ViewHolder1 {

TextView rank1;

TextView time1;

}



public class ViewHolder2 {

TextView rank2;

TextView time2;

}



public class ViewHolder3 {

TextView rank3;

TextView time3;

}

}

使用方式:

声明并定义自己的Adapter,在ListView中设置他的Adapter

[java] view
plaincopy

private RunRankAdapter runRankAdapter;

ArrayList<HashMap<String, Object>> runRank;

ListView lv_runRank;

runRank = new ArrayList<HashMap<String, Object>>();

runRankAdapter = new RunRankAdapter(this, runRank);

lv_runRank = (ListView) findViewById(R.id.lv_runRank);

lv_runRank.setAdapter(runRankAdapter);

还有一种方法：

在主布局文件中包含一个LinearLayout. 并且设置android:orientation="vertical"

定义两种不同的布局文件，然后代码中,根据不同条件调用.addview向LinearLayout加载就可以了

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