Android ListView使用（非原创）

1.ListView：它以列表的形式展示具体要显示的内容，并且能够根据数据的长度自适应屏幕显示

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >
	
    <ListView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
    </ListView>

</LinearLayout>

2.使用ListView的步骤：

　　2.1根据ID获取ListView对象，ListView lv = (ListView) findViewById(R.id.lv);

　　2.2准备适配器，Adapter

class MyAdapter extends BaseAdapter{

		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return list.size();
		}

		@Override
		public Object getItem(int position) {
			// TODO Auto-generated method stub
			return null;
		}

		@Override
		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return 0;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			// TODO Auto-generated method stub
			Emp e = list.get(position);
			View v = View.inflate(MainActivity.this,R.layout.item_listview,null);
			TextView tv_name = (TextView) v.findViewById(R.id.tv_name);
			tv_name.setText(e.getName());
			TextView tv_salary = (TextView) v.findViewById(R.id.tv_salary);
			tv_salary.setText(e.getSalary());
			TextView tv_phone = (TextView) v.findViewById(R.id.tv_phone);
			tv_phone.setText(e.getPhone());
			return v;
		}
	}

　　　2.3传入适配器对象，lv.setAdapter(adapter);