Java 获取内容提供程序中所有名称的列表

我正在使用“Calls.CONTENT\u URI”内容提供者。我已经检索了列名，但现在我想从这个内容提供者的列名“name”中获取所有名称

我的代码如下：

uri = Calls.CONTENT_URI;

    String[] projection = {"name"};
    String selection = null;
    String[] selectionArgs = null;
    String sort = null;


    resolver = getContentResolver();

    cursor = resolver.query(uri, projection, selection, selectionArgs, sort);
    Log.i("TUTORIAL", "counts :"+cursor.getCount());    

    String s;
    cursor.moveToFirst();

    for(int x=0; x<cursor.getCount(); x++){

        s = cursor.getString(x);
        Log.i("TUTORIAL", ""+s);

        //cursor.moveToNext();


    }

uri=Calls.CONTENT\u uri；
字符串[]投影={“名称”}；
字符串选择=null；
字符串[]selectionArgs=null；
字符串排序=null；
解析程序=getContentResolver（）；
cursor=resolver.query（uri、投影、选择、选择、排序）；
Log.i（“教程”，“计数：”+cursor.getCount（））；
字符串s；
cursor.moveToFirst（）；
对于（intx=0；x我想这会对你有帮助

        ArrayList<String> nameList = new ArrayList<String>();
    String[] projection = {"name"};
    String selection = null;
    String[] selectionArgs = null;
    String sort = null;
    resolver = getContentResolver();
    cursor = resolver.query(uri, projection, selection, selectionArgs, sort);
    Log.i("TUTORIAL", "counts :"+cursor.getCount());    
    String s;
    if(cursor.moveToFirst()) {
        do {
            nameList.add(cursor.getString(0));
            //your code
            //s = cursor.getString(x);
            Log.i("TUTORIAL", ""+cursor.getString(0));
        }while(cursor.moveToNext());
    }

ArrayList nameList=new ArrayList（）；
字符串[]投影={“名称”}；
字符串选择=null；
字符串[]selectionArgs=null；
字符串排序=null；
解析程序=getContentResolver（）；
cursor=resolver.query（uri、投影、选择、选择、排序）；
Log.i（“教程”，“计数：”+cursor.getCount（））；
字符串s；
if（cursor.moveToFirst（））{
做{
nameList.add（cursor.getString（0））；
//你的代码
//s=cursor.getString（x）；
Log.i（“TUTORIAL”，“cursor.getString（0））；
}while（cursor.moveToNext（））；
}
你可以试试这个，它对我有用：

public void readContacts() {
        Cursor cur = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null,
                null, null, null);
        if (cur.getCount() > 0) {
            while (cur.moveToNext()) {
                if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {

                    // Get contact id (id)
                    String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));

                    // Get contact name (displayName)
                    String displayName = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

                }
            }
        }
        cur.close();
    }

这是代码

 public class MainActivity extends AppCompatActivity {
SimpleCursorAdapter mAdapter;
MatrixCursor mMatrixCursor;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    // The contacts from the contacts content provider is stored in this cursor
    mMatrixCursor = new MatrixCursor(new String[] { "_id","name","photo","details"} );

    // Adapter to set data in the listview
    mAdapter = new SimpleCursorAdapter(getBaseContext(),
            R.layout.lv_layout,
            null,
            new String[] { "name","photo","details"},
            new int[] { R.id.tv_name,R.id.iv_photo,R.id.tv_details}, 0);

    // Getting reference to listview
    ListView lstContacts = (ListView) findViewById(R.id.lst_contacts);

    // Setting the adapter to listview
    lstContacts.setAdapter(mAdapter);

    // Creating an AsyncTask object to retrieve and load listview with contacts
    ListViewContactsLoader listViewContactsLoader = new ListViewContactsLoader();

    // Starting the AsyncTask process to retrieve and load listview with contacts
    listViewContactsLoader.execute();
}

/** An AsyncTask class to retrieve and load listview with contacts */
private class ListViewContactsLoader extends AsyncTask<Void, Void, Cursor> {

    @Override
    protected Cursor doInBackground(Void...  params) {
        Uri contactsUri = ContactsContract.Contacts.CONTENT_URI;

        // Querying the table ContactsContract.Contacts to retrieve all the contacts
        Cursor contactsCursor = getContentResolver().query(contactsUri, null, null, null,ContactsContract.Contacts.DISPLAY_NAME + " ASC ");

        if(contactsCursor.moveToFirst()){
            do{
                long contactId = contactsCursor.getLong(contactsCursor.getColumnIndex("_ID"));

                Uri dataUri = ContactsContract.Data.CONTENT_URI;

                // Querying the table ContactsContract.Data to retrieve individual items like
                // home phone, mobile phone, work email etc corresponding to each contact
                Cursor dataCursor = getContentResolver().query(dataUri, null,
                        ContactsContract.Data.CONTACT_ID + "=" + contactId,
                        null, null);

                String displayName="";
                String nickName="";
                String homePhone="";
                String mobilePhone="";
                String workPhone="";
                //String photoPath="" + R.drawable.blank;
                byte[] photoByte=null;
                String homeEmail="";
                String workEmail="";
                String companyName="";
                String title="";

                if(dataCursor.moveToFirst()){
                    // Getting Display Name
                    displayName = dataCursor.getString(dataCursor.getColumnIndex(ContactsContract.Data.DISPLAY_NAME ));
                    do{

                        // Getting NickName
                        if(dataCursor.getString(dataCursor.getColumnIndex("mimetype")).equals(ContactsContract.CommonDataKinds.Nickname.CONTENT_ITEM_TYPE))
                            nickName = dataCursor.getString(dataCursor.getColumnIndex("data1"));

                        // Getting Phone numbers
                        if(dataCursor.getString(dataCursor.getColumnIndex("mimetype")).equals(ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE)){
                            switch(dataCursor.getInt(dataCursor.getColumnIndex("data2"))){
                                case ContactsContract.CommonDataKinds.Phone.TYPE_HOME :
                                    homePhone = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                    break;
                                case ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE :
                                    mobilePhone = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                    break;
                                case ContactsContract.CommonDataKinds.Phone.TYPE_WORK :
                                    workPhone = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                    break;
                            }
                        }

                        // Getting EMails
                        if(dataCursor.getString(dataCursor.getColumnIndex("mimetype")).equals(ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE ) ) {
                            switch(dataCursor.getInt(dataCursor.getColumnIndex("data2"))){
                                case ContactsContract.CommonDataKinds.Email.TYPE_HOME :
                                    homeEmail = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                    break;
                                case ContactsContract.CommonDataKinds.Email.TYPE_WORK :
                                    workEmail = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                    break;
                            }
                        }

                        // Getting Organization details
                        if(dataCursor.getString(dataCursor.getColumnIndex("mimetype")).equals(ContactsContract.CommonDataKinds.Organization.CONTENT_ITEM_TYPE)){
                            companyName = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                            title = dataCursor.getString(dataCursor.getColumnIndex("data4"));
                        }

                        // Getting Photo
                        if(dataCursor.getString(dataCursor.getColumnIndex("mimetype")).equals(ContactsContract.CommonDataKinds.Photo.CONTENT_ITEM_TYPE)){
                            photoByte = dataCursor.getBlob(dataCursor.getColumnIndex("data15"));

                            if(photoByte != null) {
                                Bitmap bitmap = BitmapFactory.decodeByteArray(photoByte, 0, photoByte.length);

                                // Getting Caching directory
                                File cacheDirectory = getBaseContext().getCacheDir();

                                // Temporary file to store the contact image
                                File tmpFile = new File(cacheDirectory.getPath() + "/wpta_"+contactId+".png");

                                // The FileOutputStream to the temporary file
                                try {
                                    FileOutputStream fOutStream = new FileOutputStream(tmpFile);

                                    // Writing the bitmap to the temporary file as png file
                                    bitmap.compress(Bitmap.CompressFormat.PNG,100, fOutStream);

                                    // Flush the FileOutputStream
                                    fOutStream.flush();

                                    //Close the FileOutputStream
                                    fOutStream.close();

                                } catch (Exception e) {
                                    e.printStackTrace();
                                }
                               // photoPath = tmpFile.getPath();
                            }
                        }
                    }while(dataCursor.moveToNext());
                    String details = "";

                    // Concatenating various information to single string
                    if(homePhone != null && !homePhone.equals("") )
                        details = "HomePhone : " + homePhone + "\n";
                    if(mobilePhone != null && !mobilePhone.equals("") )
                        details += "MobilePhone : " + mobilePhone + "\n";
                    if(workPhone != null && !workPhone.equals("") )
                        details += "WorkPhone : " + workPhone + "\n";
                    if(nickName != null && !nickName.equals("") )
                        details += "NickName : " + nickName + "\n";
                    if(homeEmail != null && !homeEmail.equals("") )
                        details += "HomeEmail : " + homeEmail + "\n";
                    if(workEmail != null && !workEmail.equals("") )
                        details += "WorkEmail : " + workEmail + "\n";
                    if(companyName != null && !companyName.equals("") )
                        details += "CompanyName : " + companyName + "\n";
                    if(title != null && !title.equals("") )
                        details += "Title : " + title + "\n";

                    // Adding id, display name, path to photo and other details to cursor
                    mMatrixCursor.addRow(new Object[]{ Long.toString(contactId),displayName,null,details});
                }
            }while(contactsCursor.moveToNext());
        }
        return mMatrixCursor;
    }

    @Override
    protected void onPostExecute(Cursor result) {
        // Setting the cursor containing contacts to listview
        mAdapter.swapCursor(result);
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}

public类MainActivity扩展了AppCompatActivity{
简单的适应；
MatrixCursor mMatrixCursor；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
//联系人内容提供程序中的联系人存储在此光标中
mMatrixCursor=新矩阵xcursor（新字符串[]{“\u id”，“name”，“photo”，“details”}）；
//用于在listview中设置数据的适配器
mAdapter=new SimpleCursorAdapter（getBaseContext（），
R.布局。lv_布局，
无效的
新字符串[]{“名称”、“照片”、“详细信息”}，
新int[]{R.id.tv_name，R.id.iv_photo，R.id.tv_details}，0）；
//获取对listview的引用
ListView lstContacts=（ListView）findViewById（R.id.lst_contacts）；
//将适配器设置为listview
lstContacts.setAdapter（mAdapter）；
//创建AsyncTask对象以检索和加载带有联系人的listview
ListViewContactsLoader ListViewContactsLoader=新建ListViewContactsLoader（）；
//启动AsyncTask进程以检索和加载带有联系人的listview
listViewContactsLoader.execute（）；
}
/**用于检索和加载带有联系人的listview的AsyncTask类*/
私有类ListViewContactsLoader扩展异步任务{
@凌驾
受保护的游标doInBackground（无效…参数）{
Uri contactsUri=ContactsContract.Contacts.CONTENT\u Uri；
//查询ContactsContract.Contacts表以检索所有联系人
Cursor contactsCursor=getContentResolver（）.query（contactsUri，null，null，null，ContactsContract.Contacts.DISPLAY_NAME+“ASC”）；
如果（contactsUrsor.moveToFirst（））{
做{
long contactId=contactsCursor.getLong（contactsCursor.getColumnIndex（“\u ID”）；
Uri dataUri=ContactsContract.Data.CONTENT\u Uri；
//查询ContactsContract.Data表以检索单个项目，如
//每个联系人对应的家庭电话、手机、工作电子邮件等
Cursor dataCursor=getContentResolver（）.query（dataUri，null，
contacts contract.Data.CONTACT_ID+“=”+contactId，
空，空）；
字符串displayName=“”；
字符串昵称=”；
字符串homePhone=“”；
字符串mobilePhone=“”；
字符串workPhone=“”；
//字符串photoPath=”“+R.drawable.blank；
字节[]photoByte=null；
字符串homemail=“”；
字符串workEmail=“”；
字符串companyName=“”；
字符串标题=”；
if（dataCursor.moveToFirst（））{
//获取显示名称
displayName=dataCursor.getString（dataCursor.getColumnIndex（ContactsContract.Data.DISPLAY_NAME））；
做{
//获得昵称
if（dataCursor.getString（dataCursor.getColumnIndex（“mimetype”））.equals（ContactsContract.CommonDataTypes.昵称.CONTENT\u ITEM\u TYPE））
昵称=dataCursor.getString（dataCursor.getColumnIndex（“data1”））；
//获取电话号码
if（dataCursor.getString（dataCursor.getColumnIndex（“mimetype”））.equals（ContactsContract.CommonDataTypes.Phone.CONTENT\u ITEM\u TYPE））{
开关（dataCursor.getInt（dataCursor.getColumnIndex（“data2”））{
案例联系人contract.commondatatypes.Phone.TYPE\u HOME:
homePhone=dataCursor.getString（dataCursor.getColumnIndex（“data1”））；
打破
案例联系人contract.commondatatypes.Phone.TYPE\u手机：
mobilePhone=dataCursor.getString（dataCursor.getColumnIndex（“data1”））；
打破
案例联系人contract.commondatatypes.Phone.TYPE\u工作：
workPhone=dataCursor.getString（dataCursor.getColumnIndex（“data1”））；
打破
}
}
//收到电子邮件
if（dataCursor.getString（dataCursor.getColumnIndex（“mimetype”））.equals（ContactsContract.CommonDataTypes.Email.CONTENT\u ITEM\u TYPE））{
开关（dataCursor.getInt（dataCursor.getColumnIndex（“data2”））{
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