大家都知道listview可以根据自己的需求,重写baseadapter ,实现自己的布局及数据,但是当我们在自己的布局中加入了button或者ImageButton,还有其他比如checkbox,radiobutton等控件时,发现listview不在响应onitemclick事件,让人很悲愤啊,自己在网找了个方法,可以处理掉这个东东
发生的原因:当listview中包含button,checkbox等控件的时候,android会默认将focus给了这些控件,也就是说listview的item根本就获取不到focus,所以导致onitemclick时间不能触发。
既然我们知道了,发生的原因,那么我们就将button等控件的在xml布局文件中的属性android:focusable设置为false,就ok了,但通常不这样做,因为要一个一个地修改button太麻烦,通常可以修改这些button的父容器的descendantFocusability属性为false,是否很方便呢,这样即可以触发onitemclick事件,同时我们在baseadapter实现类中也可以处理button等控件的事件,两不相误。
给一下源码把,因为jar中很多测试例子所以就不给全部了,
1.list.xml 2.list_item.xml 3.Activity的oncreate方法
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.list);
listView = (ListView) findViewById(R.id.list);
final String[] title = {"衣服", "手机", "相机", "电视", "下载"};
BaseAdapter adapter = new BaseAdapter()
{
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
ViewHodler hodler;
if (convertView == null)
{
LayoutInflater inflater = LayoutInflater.from(A.this);
convertView = inflater.inflate(R.layout.list_item, null);
hodler = new ViewHodler();
hodler.text = (TextView) convertView.findViewById(R.id.text);
hodler.b = (Button) convertView.findViewById(R.id.button);
convertView.setTag(hodler);
}
else
{
hodler = (ViewHodler) convertView.getTag();
}
hodler.text.setText(title[position]);
hodler.b.setText("立即订购" + title[position]);
hodler.b.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
Toast.makeText(A.this, "你好吗?", 1).show();
}
});
return convertView;
}
@Override
public long getItemId(int position)
{
// TODO Auto-generated method stub
return position;
}
@Override
public Object getItem(int position)
{
// TODO Auto-generated method stub
return position;
}
@Override
public int getCount()
{
// TODO Auto-generated method stub
return title.length;
}
class ViewHodler
{
TextView text;
Button b;
}
};
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
Toast.makeText(A.this, "这是listview的itemclick", 1).show();
}
});
listView.setOnItemSelectedListener(new OnItemSelectedListener()
{
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
{
Toast.makeText(A.this, "这是listview的onItemSelected", 1).show();
}
@Override
public void onNothingSelected(AdapterView<?> parent)
{
// TODO Auto-generated method stub
}
});
}
如果发现错误,自己找一下,对自己有好处,不喜欢研究错误的程序猿不是好程序猿!!!!!!
发生的原因:当listview中包含button,checkbox等控件的时候,android会默认将focus给了这些控件,也就是说listview的item根本就获取不到focus,所以导致onitemclick时间不能触发。
既然我们知道了,发生的原因,那么我们就将button等控件的在xml布局文件中的属性android:focusable设置为false,就ok了,但通常不这样做,因为要一个一个地修改button太麻烦,通常可以修改这些button的父容器的descendantFocusability属性为false,是否很方便呢,这样即可以触发onitemclick事件,同时我们在baseadapter实现类中也可以处理button等控件的事件,两不相误。
给一下源码把,因为jar中很多测试例子所以就不给全部了,
1.list.xml 2.list_item.xml 3.Activity的oncreate方法
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.list);
listView = (ListView) findViewById(R.id.list);
final String[] title = {"衣服", "手机", "相机", "电视", "下载"};
BaseAdapter adapter = new BaseAdapter()
{
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
ViewHodler hodler;
if (convertView == null)
{
LayoutInflater inflater = LayoutInflater.from(A.this);
convertView = inflater.inflate(R.layout.list_item, null);
hodler = new ViewHodler();
hodler.text = (TextView) convertView.findViewById(R.id.text);
hodler.b = (Button) convertView.findViewById(R.id.button);
convertView.setTag(hodler);
}
else
{
hodler = (ViewHodler) convertView.getTag();
}
hodler.text.setText(title[position]);
hodler.b.setText("立即订购" + title[position]);
hodler.b.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
Toast.makeText(A.this, "你好吗?", 1).show();
}
});
return convertView;
}
@Override
public long getItemId(int position)
{
// TODO Auto-generated method stub
return position;
}
@Override
public Object getItem(int position)
{
// TODO Auto-generated method stub
return position;
}
@Override
public int getCount()
{
// TODO Auto-generated method stub
return title.length;
}
class ViewHodler
{
TextView text;
Button b;
}
};
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
Toast.makeText(A.this, "这是listview的itemclick", 1).show();
}
});
listView.setOnItemSelectedListener(new OnItemSelectedListener()
{
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
{
Toast.makeText(A.this, "这是listview的onItemSelected", 1).show();
}
@Override
public void onNothingSelected(AdapterView<?> parent)
{
// TODO Auto-generated method stub
}
});
}
如果发现错误,自己找一下,对自己有好处,不喜欢研究错误的程序猿不是好程序猿!!!!!!