我正在开发一个应用程序,其中gridview包含按钮列表...
当我在gridview中放置图像而不是按钮时,会触发onItemClickEvent。.但是,如果我在gridView中放置按钮,则单击事件不会被调用...我不知道是什么问题...甚至我都没有得到异常。
这是我的代码...
public class MainMenu extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
GridView gridview = (GridView) findViewById(R.id.mainMenu);
gridview.setAdapter(new ImageAdapter(this));
gridview.setOnItemClickListener(new OnItemClickListener()
{
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
{
Toast.makeText(MainMenu.this, "hello" + position, Toast.LENGTH_SHORT).show();
}
});
}
//inner class for adapter
class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c)
{
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
// create a new ImageView for each item referenced by the Adapter
public View getView(int position, View convertView, ViewGroup parent) {
//ImageView imageView;
Button btn;
if (convertView == null) { // if it's not recycled, initialize some attributes
btn=new Button(mContext);
// imageView = new ImageView(mContext);
btn.setLayoutParams(new GridView.LayoutParams(120,120));
// imageView.setLayoutParams(new GridView.LayoutParams(140,140));
//imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
btn.setPadding(10,15, 10,15);
btn.setImeActionLabel("hello",0);// actionId)
// imageView.setPadding(8,8, 8, 8);
} else
{
btn=(Button)convertView;
//imageView=(ImageView)convertView;
}
btn.setBackgroundResource(mThumbIds[position]);
//imageView.setImageResource(mThumbIds[position]);
//return imageView;
return btn;
}
// references to our images
private Integer[] mThumbIds =
{
R.drawable.pantrylocator_icon,
R.drawable.volunteeropportunity_icon,
R.drawable.volunteerlocator_icon,
R.drawable.volunteermanagement_icon,
R.drawable.donationform_icon,
R.drawable.donationviamsg_icon,
R.drawable.donationvideo_icon,
R.drawable.virtualfooddrive_icon,
R.drawable.newevent_icon,
R.drawable.pressrelease_icon,
R.drawable.volunteerphotos_icon,
R.drawable.aboutus_icon,
};
}
}
最佳答案
该按钮具有自己的OnClickListener:
public View getView(int position, View convertView, ViewGroup parent) {
//ImageView imageView;
Button btn;
if (convertView == null) { // if it's not recycled, initialize some attributes
btn=new Button(mContext);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Perform action on click
}
});
// imageView = new ImageView(mContext);
btn.setLayoutParams(new GridView.LayoutParams(120,120));
// imageView.setLayoutParams(new GridView.LayoutParams(140,140));
//imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
btn.setPadding(10,15, 10,15);
btn.setImeActionLabel("hello",0);// actionId)
// imageView.setPadding(8,8, 8, 8);
} else
{
btn=(Button)convertView;
//imageView=(ImageView)convertView;
}
btn.setBackgroundResource(mThumbIds[position]);
//imageView.setImageResource(mThumbIds[position]);
//return imageView;
return btn;
}