Question

希望这是一个简单的，

我正在尝试在我的类中设置一个'SimpleCursorAdapter'对象变量，以便所有方法都可以访问它，所有非常标准的东西。目前我在'OnCreate'方法中出现错误，显示以下错误：

错误：

cursorAdapter cannot be resolved to a type.

继承了类中声明的SimpleCursorAdapter：

package com.example.flybase2;

import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.ListActivity;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.widget.SimpleCursorAdapter;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ListView;

public class ViewAppointments extends ListActivity implements OnClickListener {
SimpleCursorAdapter cursorAdapter;
ListView searchedAppView;
ImageButton searchAppoints;
EditText searchAppName;
Long id;



DBHandlerApp delApp = new DBHandlerApp(this, null, null);

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);


    setContentView(R.layout.appointmentview);

    searchedAppView = (ListView)findViewById(android.R.id.list);

    searchAppoints = (ImageButton) findViewById(R.id.btnSearchAppointName); 
    searchAppName = (EditText) findViewById(R.id.inputAppointName); 

    DBHandlerApp DBAppointments = new DBHandlerApp(this, null, null);

    DBHandlerApp searchApps = new DBHandlerApp(this, null, null);

    searchApps.open();


    Cursor cursor = searchApps.getAppointmentsData();
    searchApps.close();
    startManagingCursor(cursor);



    @SuppressWarnings("static-access")
    String [] from = new String [] {DBAppointments.KEY_NAMEAPP, DBAppointments.KEY_TYPEAPP, DBAppointments.KEY_TIMEAPP, DBAppointments.KEY_DATEAPP, DBAppointments.KEY_COMMENTAPP};
    int [] to = new int [] {R.id.txtAppointName, R.id.txtAppointType, R.id.txtAppointTime, R.id.txtAppointDate, R.id.txtAppointCom};

    @SuppressWarnings("deprecation")


    //ERROR: cursorAdapter cannot be resolved.
    cursorAdapter = new SimpleCursorAdapter(this, R.layout.setappointviews, cursor, from, to);
    searchedAppView.setAdapter(cursorAdapter);

    searchedAppView.setTextFilterEnabled(true);

    searchAppoints.setOnClickListener(this);



    searchAppName.addTextChangedListener(new TextWatcher()
     {

        @Override
        public void afterTextChanged(Editable s) {

            cursorAdapter.getFilter().filter(s.toString());


        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {


        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before,
                int count) {

        }

     });

    };

Answer 1

您不需要该对象。你可以这样做：

searchedAppView.getAdapter(); //listView.getAdapter()

您活动中的任何地方。

Answer 2

您的问题在于注释的位置。

@SuppressWarnings("deprecation")

位于onCreate()内，（奇怪地）导致错误。

从所有方法访问SimpleCursorAdapter

2 个答案: