Android 读取联系人（和详细信息）似乎很慢

Posted 2023-04-17

【中文标题】Android 读取联系人（和详细信息）似乎很慢

【英文标题】：Android read contacts(and details) seems very slow

【发布时间】：2013-09-13 12:10:13

【问题描述】：

我使用以下代码读取每个联系人及其详细信息。

private static final String[] PROJECTION =

    Data._ID,
    Data.MIMETYPE,
    Data.DATA1,
    Data.DATA2,
    Data.DATA3,
    Data.DATA4,
    Data.DATA5,
    Data.DATA6,
    Data.DATA7,
    Data.DATA8,
    Data.DATA9,
    Data.DATA10,
    Data.DATA11,
    Data.DATA12,
    Data.DATA13,
    Data.DATA14,
    Data.DATA15
;    


private static final String SELECTION = Data.LOOKUP_KEY + " = ?";
private String[] mSelectionArgs =  "" ;
private static final String SORT_ORDER = Data.MIMETYPE;
private static final int MIME_TYPE_INDEX = 1;
private static final int DISPLAY_NAME_INDEX = 3;//data2
private static final int GIVEN_NAME_INDEX = 3;//data2
private static final int FAMILY_NAME_INDEX = 4;//data3
private static final int MIDDLE_NAME_INDEX = 6;//data5
private static final int ORGANIZATION_INDEX = 2;//data2
private static final int PHONE_TYPE_INDEX = 3;//data2
private static final int PHONE_LABEL_INDEX = 4;//data3
private static final int PHONE_NUMBER_INDEX = 2;//data1
private static final int EMAIL_TYPE_INDEX = 3;//data2
private static final int EMAIL_LABEL_INDEX = 4;//data1
private static final int EMAIL_INDEX = 2;//data1

 private byte[] createJsonData(ArrayList<String> selected) throws JSONException, IOException

    Log.d("SynchContactActivity", "Time 1: " + java.text.DateFormat.getDateTimeInstance().format(Calendar.getInstance().getTime()));
    int current = 0;
    final String messagePrep = getResources().getString(R.string.progress_message_prep);
    final String messageCompress = getResources().getString(R.string.progress_message_compress);
    final String messageUpload = getResources().getString(R.string.progress_message_upload);

    if(selected == null )
        selected = getContacts();
    

    final int count = selected.size();

    mHandler.post(new Runnable() 

        @Override
        public void run() 
            if(mProgressDialog != null)
                mProgressDialog.setMax(count);
                mProgressDialog.setMessage(messagePrep);
            
        
    );

    updateProgress(current);

    JSONObject root = new JSONObject();
    JSONArray contactsArray = new JSONArray();
    JSONObject contactJSON, phoneJSON, emailJSON;
    JSONArray phonesArray,emailsArray;
    String name, lastName, middleName,organization;

    for (String key : selected) 

        contactJSON = new JSONObject();
        phonesArray = new JSONArray();
        emailsArray = new JSONArray();

        mSelectionArgs[0] = key;
        //Cursor details = managedQuery(Data.CONTENT_URI, PROJECTION, SELECTION, mSelectionArgs, SORT_ORDER);
        Cursor details = getApplicationContext().getContentResolver().query(Data.CONTENT_URI, PROJECTION, SELECTION, mSelectionArgs, SORT_ORDER);

        //initialize null variables
        name = null;
        lastName = null;
        middleName = null;
        organization = null;
        while(details.moveToNext())
            String mimeType = details.getString(MIME_TYPE_INDEX);

            if(mimeType.equals(ContactsContract.CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE))
                name = details.getString(GIVEN_NAME_INDEX);
                lastName = details.getString(FAMILY_NAME_INDEX);
                middleName = details.getString(MIDDLE_NAME_INDEX);

            
            else if(mimeType.equals(ContactsContract.CommonDataKinds.Organization.CONTENT_ITEM_TYPE))
                organization = details.getString(ORGANIZATION_INDEX);
                           
            else if(mimeType.equals(ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE))
                phoneJSON = new JSONObject();
                String phoneNumber = details.getString(PHONE_NUMBER_INDEX);
                int type = details.getInt(PHONE_TYPE_INDEX);
                String typeLabel = phoneTypeMap.get(String.valueOf(type));
                if (typeLabel == null) 
                    typeLabel = details.getString(PHONE_LABEL_INDEX);
                
                phoneJSON.put("ptype", typeLabel);
                phoneJSON.put("number", phoneNumber);
                phonesArray.put(phoneJSON);
            
            else if(mimeType.equals(ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE))
                emailJSON = new JSONObject();
                String email = details.getString(EMAIL_INDEX);
                int type = details.getInt(EMAIL_TYPE_INDEX);
                String typeLabel = emailTypeMap.get(String.valueOf(type));
                if (typeLabel == null) 
                    typeLabel = details.getString(EMAIL_LABEL_INDEX);
                
                emailJSON.put("etype", typeLabel);
                emailJSON.put("address",email);
                emailsArray.put(emailJSON);
            
        

        contactJSON.put("firstname", name==null?"null":name);
        contactJSON.put("middlename", middleName==null?"null":middleName);
        contactJSON.put("lastname", lastName==null?"null":lastName);
        contactJSON.put("organization", organization==null?"null":organization);
        contactJSON.put("phones", phonesArray);
        contactJSON.put("emails", emailsArray);
        contactsArray.put(contactJSON);
        details.close();
        ++current;
        updateProgress(current);
    
    root.put("contacts", contactsArray);
    Log.d("SynchContactActivity", "Time 1: " + java.text.DateFormat.getDateTimeInstance().format(Calendar.getInstance().getTime()));

    mHandler.post(new Runnable() 

        @Override
        public void run() 
            if(mProgressDialog != null)
                mProgressDialog.setMessage(messageCompress);
            
        
    );
    // to compress
    String json_doc = root.toString();
    byte[] compressed = compress(json_doc);

    mHandler.post(new Runnable() 

        @Override
        public void run() 
            if(mProgressDialog != null)
                mProgressDialog.setMessage(messageUpload);
            
        
    );
    return compressed;

此代码太慢 - 平均每秒读取 3-4 个联系人。这是正常的还是可以优化的？

我认为投影可能是一个很好的优化候选者，但我不确定。

提前致谢。

【参考方案1】：

我很难准确地说出您要做什么，但看起来您正在尝试从联系人提供程序读取数据并使用 JSON 将其发送到服务器。我建议您查看 ContactsContract.RawContacts.Entity 表，该表包含您可能正在寻找的所有数据，而无需试图找出您刚刚检索到的 DATA 行的 MIME 类型。通过获取 DATA 行的全部内容，您肯定会减慢您的应用程序的速度。

此外，您应该使用 SyncAdapter 来完成这项工作。见Transferring Data Using Sync Adapters

【讨论】：

嗨，是的，我想做你所说的。但是，不管我是否使用 MIMETYPE 检查，它都会很慢。查询是这里的麻烦部分。

【参考方案2】：

阅读联系人可以在 2-5 秒内完成。在此处查看示例应用程序

Source code attached

【讨论】：

在 GitHub 上添加指向您的代码的直接链接怎么样，或者直接在此处添加更好？我下载那个应用程序只是因为我从屏幕上看到有 GitHub 链接，看看你是如何在 2-5 秒内完成它的。该应用程序在启动时崩溃。由于这些原因，我认为这个答案没有帮助