Android 对话框消息不存在'；行不通

我有这个数组

String[] values = new String[] { "Android", "iPhone", "WindowsMobile", "Blackberry", "WebOS", "Ubuntu", "Windows8", "Max OS X", "Linux", "OS/2" };

我需要在ListView和adapter中显示元素，当我单击对话框消息中的某个元素时，我需要显示所单击的元素

public class zadaca1 extends ListActivity {


 String[] values = new String[] { "Android", "iPhone", "WindowsMobile", "Blackberry", "WebOS", "Ubuntu", "Windows8", "Max OS X", "Linux", "OS/2" };
    protected void onCreate (Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       // setContentView(R.layout.layout_zadaca1);


        setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,values));

        ListView listView=getListView();
        listView.setTextFilterEnabled(true);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                AlertDialog.Builder builder= new AlertDialog.Builder(getApplicationContext());
                        builder.setTitle("Delete entry");
                        builder.setMessage("Are you sure you want to delete this entry?");
                        builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int which) {
                                // continue with delete
                                dialog.cancel();
                            }
                        });
             //   builder.setMessage(((TextView)view).getText());
                builder.show();

            }

        });

    }

}

及

---

但此代码显示错误

您可以通过以下方式获取listview中的项目：

TextView nameyouWant = (TextView) view.findViewById(R.id.idofyourItem);

在ClickListener中显示警报对话框：

            listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View view,
                                    int position, long id) {

            //fetch data inside the listview item
            TextView Title = (TextView) view.findViewById(R.id.idofyourItem);
            String someTitle = Title.getText().toString();

                AlertDialog.Builder builder = new AlertDialog.Builder(YourActivityName.this);

                //delete button
                builder.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                       //do some stuffs here!
                    }
                });
                builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        dialog.cancel();
                    }
                });
                builder.setTitle("Delete ?");
                builder.setCancelable(false);

                AlertDialog dialog = builder.create();
                dialog.show();


            }
        });

listView.setOnItemClickListener（新的AdapterView.OnItemClickListener（）{
public void onItemClick（AdapterView父级、视图、，
内部位置，长id）{
//获取listview项内的数据
TextView Title=（TextView）view.findViewById（R.id.idofyourItem）；
String someTitle=Title.getText（）.toString（）；
AlertDialog.Builder=新建AlertDialog.Builder（YourActivityName.this）；
//删除按钮
setPositiveButton（“删除”，新建DialogInterface.OnClickListener（））{
public void onClick（DialogInterface对话框，int-id）{
//在这里做些事情！
}
});
setNegativeButton（“取消”，新建DialogInterface.OnClickListener（））{
public void onClick（DialogInterface对话框，int-id）{
dialog.cancel（）；
}
});
builder.setTitle（“删除？”）；
builder.setCancelable（false）；
AlertDialog=builder.create（）；
dialog.show（）；
}
});

我尝试了这个，效果很好

 public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    AlertDialog.Builder builder= new AlertDialog.Builder(zadaca1.this);
                            builder.setTitle("You clicked on");
                             builder.setMessage(((TextView)view).getText());
                            builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                    // continue with delete
                                    dialog.cancel();
                                }
                            });
                 //
                    AlertDialog dialog = builder.create();
                    dialog.show();

public void onItemClick（AdapterView父视图、视图视图、整型位置、长id）{
AlertDialog.Builder=新建AlertDialog.Builder（zadaca1.this）；
builder.setTitle（“您点击了”）；
setMessage（（（TextView）视图）.getText（））；
setPositiveButton（“确定”，新的DialogInterface.OnClickListener（）{
public void onClick（DialogInterface dialog，int which）{
//继续删除
dialog.cancel（）；
}
});
//
AlertDialog=builder.create（）；
dialog.show（）；

对话框消息不起作用

定义不起作用。

此代码显示错误

哪些错误？请输入LogCat？在LogCat中，错误是什么？显示日志cat消息后尝试

AlertDialog.Builder=新建AlertDialog.Builder（zadaca1.this）；

            listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View view,
                                    int position, long id) {

            //fetch data inside the listview item
            TextView Title = (TextView) view.findViewById(R.id.idofyourItem);
            String someTitle = Title.getText().toString();

                AlertDialog.Builder builder = new AlertDialog.Builder(YourActivityName.this);

                //delete button
                builder.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                       //do some stuffs here!
                    }
                });
                builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        dialog.cancel();
                    }
                });
                builder.setTitle("Delete ?");
                builder.setCancelable(false);

                AlertDialog dialog = builder.create();
                dialog.show();


            }
        });

 public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    AlertDialog.Builder builder= new AlertDialog.Builder(zadaca1.this);
                            builder.setTitle("You clicked on");
                             builder.setMessage(((TextView)view).getText());
                            builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                    // continue with delete
                                    dialog.cancel();
                                }
                            });
                 //
                    AlertDialog dialog = builder.create();
                    dialog.show();