Android:显示目标对象的详细信息

时间:2012-12-10 02:42:00

标签: android parameter-passing click

我有contactmanager.java来显示阅读并显示来自手机的联系人。当我点击某个联系人列表时,它没有显示确切的联系人详细信息。我可以知道为什么吗?

  /*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.contactmanager;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;

public final class ContactManager extends Activity implements OnItemClickListener
{

    public static final String TAG = "ContactManager";

    private Button mAddAccountButton;
    private ListView mContactList;
    private boolean mShowInvisible;
    //public BooleanObservable ShowInvisible = new BooleanObservable(false);
    private CheckBox mShowInvisibleControl;

    /**
     * Called when the activity is first created. Responsible for initializing the UI.
     */



    @Override
    public void onCreate(Bundle savedInstanceState)
    {


        Log.v(TAG, "Activity State: onCreate()");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.contact_manager);

        // Obtain handles to UI objects
        mAddAccountButton = (Button) findViewById(R.id.addContactButton);
        mContactList = (ListView) findViewById(R.id.contactList);
        mShowInvisibleControl = (CheckBox) findViewById(R.id.showInvisible);

        // Initialise class properties
        mShowInvisible = false;
        mShowInvisibleControl.setChecked(mShowInvisible);

        // Register handler for UI elements
        mAddAccountButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Log.d(TAG, "mAddAccountButton clicked");
                launchContactAdder();
            }
        });
        mShowInvisibleControl.setOnCheckedChangeListener(new OnCheckedChangeListener()
        {
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) 
            {
                Log.d(TAG, "mShowInvisibleControl changed: " + isChecked);
                mShowInvisible = isChecked;
                populateContactList();
            }
        });

        mContactList = (ListView) findViewById(R.id.contactList);
        mContactList.setOnItemClickListener(this);

        // Populate the contact list
        populateContactList();
    }



    /**
     * Populate the contact list based on account currently selected in the account spinner.
     */
    private void populateContactList() {
        // Build adapter with contact entries
        Cursor cursor = getContacts();
        String[] fields = new String[] {
                ContactsContract.Data.DISPLAY_NAME,
        };


        SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.contact_entry, cursor,
                fields, new int[] {R.id.contactEntryText});
        mContactList.setAdapter(adapter);
    }

    /**
     * Obtains the contact list for the currently selected account.
     *
     * @return A cursor for for accessing the contact list.
     */
    private Cursor getContacts()
    {
        // Run query
        Uri uri = ContactsContract.Contacts.CONTENT_URI;
        Log.i("Uri ContactsContract.Contacts.CONTENT_URI" + ContactsContract.Contacts.CONTENT_URI, null, null);

        String[] projection = new String[]
                {
                ContactsContract.Contacts._ID,
                ContactsContract.Contacts.DISPLAY_NAME,
                //ContactsContract.Contacts.DISPLAY_PHONE
                };
        String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" + (mShowInvisible ? "0" : "1") + "'";
        //String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" + (mShowInvisible.get() ? "0" : "1") + "'";
        String[] selectionArgs = null;
        String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";

        return this.managedQuery(uri, projection, selection, selectionArgs, sortOrder);
    }

    /**
     * Launches the ContactAdder activity to add a new contact to the selected account.
     */
    protected void launchContactAdder()
    {
        Intent i = new Intent(this, ContactAdder.class);
        startActivity(i);
    }

    public void onItemClick(AdapterView<?> l, View v, int position, long id) {
        Log.i("TAG", "You clicked item " + id + " at position " + position);
        // Here you start the intent to show the contact details
     // selected item
        //String contactDetails = (String)(mContactList.getItemAtPosition(position));
        //Uri contactDetails = ContactsContract.Contacts.CONTENT_URI;

        Cursor cursor = getContacts();
        //Cursor emailCur = getContacts();
        cursor.moveToPosition(position);
        String name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
        int phone = cursor.getInt(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DATA));
        //String email = emailCur.getColumnName(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));


        // Launching new Activity on selecting single List Item
        Intent i = new Intent(getApplicationContext(), SingleListContact.class);
        SingleListContact.PutDetails(ContactsContract.Contacts._ID, name, phone,null );

        Log.i("Show Contact Clicked: ",  name);
        // sending data to new activity
        //i.putExtra("Contact Person", contactDetails);
        startActivity(i);

    }


}

和SingleListContent.java

package com.example.android.contactmanager;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.widget.EditText;
import android.widget.TextView;

public class SingleListContact extends Activity{

    static int ContactPhone;
    static String ContactID, ContactName, ContactEmail;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.setContentView(R.layout.single_list_contact_view);

        EditText txtContact = (EditText) findViewById(R.id.editText1);
        txtContact.setText(ContactName);

//        EditText txtContact2 = (EditText) findViewById(R.id.editText2);
//        txtContact2.setText(ContactPhone);

        EditText txtContact3 = (EditText) findViewById(R.id.editText3);
        txtContact3.setText(ContactEmail);


// 
//        Intent i = getIntent();
//        // getting attached intent data
//        String contact = i.getStringExtra("contact");
//        // displaying selected product name
//        txtContact.setText(contact);
        Log.e("test", ContactID +" & " + ContactName); 


    }

    static void PutDetails (String id, String name, int phone, String email)
    {
        ContactID = id;
        ContactName = name;
        ContactPhone = phone;
        ContactEmail = email;


    }
}

1 个答案:

答案 0 :(得分:1)

你完全错了,这就是为什么它不起作用。

在第一个代码段中,您在PutDetails方法中传递了错误的值。

对于您传递ContactsContract.Data.DISPLAY_NAME的名称,这不是名称,它是表示电话簿的contactName列的字符串。所以要获得名称使用以下内容。

cursor.moveToPosition(position);
String name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

对于电子邮件,您发送的是空值,因此电子邮件肯定会为空。如果您想要联系人的电子邮件,请同样使用

String email = emailCur.getString(
              emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
 String emailType = emailCur.getString(
              emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE));

在这里我可以看到你只使用姓名和电子邮件。但是,如果你想要电话号码,那么你也必须找到它,因为在这里你不是发送任何电话号码而只是发送电话号码。