android – 按钮Listview适配器中的showDialog
作者:互联网
我有一个像THIS的listView
当我按下删除时我想要的.它会显示一个像这个图像的对话框
所以,当我按YES.它将从列表中删除.
这是我的代码..
public class customadapter extends BaseAdapter{
ArrayList<HashMap<String, String>> oslist;
Context context;
private Button btnDelete;
private Button btnEdit;
AlertDialog.Builder alertDialogBuilder;
public customadapter(ArrayList<HashMap<String, String>> oslist,Context context) {
System.out.println("skdjfhksdfjskfjhsdkjfh");
this.context = context;
this.oslist = oslist;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return oslist.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return oslist.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
System.out.println("oslist oslist = "+oslist);
System.out.println("oslist 1 = "+oslist);
System.out.println("oslist size = "+oslist.size());
System.out.println("oslist oslist = "+oslist.getClass());
System.out.println("position = "+position);
System.out.println("convertView = "+convertView);
System.out.println("parent = "+parent);
System.out.println("position = "+position);
LayoutInflater lif = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = lif.inflate(R.layout.listitem, null);
TextView id = (TextView) convertView.findViewById(R.id.varId);
TextView noNota = (TextView) convertView.findViewById(R.id.varNoNota);
TextView senderName = (TextView) convertView.findViewById(R.id.varSenderName);
TextView totalAmount = (TextView) convertView.findViewById(R.id.varTotalAmount);
id.setText(oslist.get(position).get("id"));
noNota.setText(oslist.get(position).get("noNota"));
senderName.setText(oslist.get(position).get("senderName"));
totalAmount.setText(oslist.get(position).get("totalAmount"));
Button btnEdit = (Button) convertView.findViewById(R.id.btnEdit);
Button btnDelete = (Button) convertView.findViewById(R.id.btnDelete);
btnEdit.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(context, "Edit ditekan!", Toast.LENGTH_LONG).show();
//I want show YES NO dialog here.
}
});
btnDelete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//I want show YES NO dialog here
}
});
return convertView;
}
}
我该怎么做才能创建一个像这样的对话..我试过这段代码
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.custom);
dialog.setTitle("Title...");
// set the custom dialog components - text, image and button
TextView text = (TextView) dialog.findViewById(R.id.text);
text.setText("Android custom dialog example!");
ImageView image = (ImageView) dialog.findViewById(R.id.image);
image.setImageResource(R.drawable.ic_launcher); //line 115
Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
// if button is clicked, close the custom dialog
dialogButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.show();
但它的成功.
我收到了这个错误
解决方法:
创建一个界面:
public interface OnDeleteListener {
public void onDelete(String message);
}
在初始化customadapter时,请将OnDeleteListener作为参数发送:
private OnDeleteListener mListener;
public customadapter(ArrayList<HashMap<String, String>> oslist,Context context, OnDeleteListener mListener) {
this.context = context;
this.oslist = oslist;
this.mListener = mListener;
}
然后在删除按钮上单击检查侦听器是否激活它:
btnDelete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//I want show YES NO dialog here
if(mListener != null)
mListener.onDelete("The message you want to show");
}
});
最后在您的activity / fragment中初始化适配器,并在监听器上调用show Dialog:
customadaper mAdapter = new customadapter(ArrayList<HashMap<String, String>> oslist,Context context, new OnDeleteListener(){
@Override
public void onDelete(String msg){
//Show your dialog here
//msg - you can send any parameter or none of them through interface just as an example i send a message to show
showDialog(msg);
}
});
您可以创建一个单独的代码清除功能,并在您想要使用时调用它
(另请注意,要创建自定义对话框,您必须对其进行充气{这可能就是您收到错误的原因}):
private void showDialog(String message){
// set the custom dialog components - text, image and button
inflater = mInflater.inflate(R.layout.your_custom_dialog, null, false);
TextView text = (TextView) inflater.findViewById(R.id.text);
text.setText(message);
ImageView image = (ImageView) inflater.findViewById(R.id.image);
image.setImageResource(R.drawable.ic_launcher); //line 115
AlertDialog.Builder mDialogBuilder = new AlertDialog.Builder(context);
mDialogBuilder.setView(viewFilterDialog);
mDialogBuilder.setCancelable(true);
mDialogBuilder.setTitle(mRes.getString(R.string.dialog_title_filter));
...
final AlertDialog mAlertDialog = mDialogBuilder.create();
mAlertDialog.show();
注意:我已对此答案进行了硬编码,因此可能会出现语法错误
标签:android,listview,android-listview,showdialog 来源: https://codeday.me/bug/20190728/1558780.html