【移動應用開發技術】Android-ContactPicker(選擇聯系人)詳解

ContactPicker(選擇聯系人)詳解本文地址:

/caroline_wendy/article/details/21629357AndroidAPI:

/reference/android/content/Intent.htmlContactPicker:用戶可以選擇一個聯系人.位置:java->package->ContactPicker.javapackagemzx.spike.contactpicker.app;importandroid.app.Activity;importandroid.content.ContentUris;importandroid.content.Intent;importandroid.database.Cursor;import.Uri;importandroid.os.Bundle;importvider.ContactsContract;importandroid.view.View;importandroid.widget.AdapterView;importandroid.widget.ListView;importandroid.widget.SimpleCursorAdapter;/***CreatedbyC.L.Wangon14-3-20.*/publicclassContactPickerextendsActivity{@OverridepublicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);finalCursorc=getContentResolver().query(ContactsContract.Contacts.CONTENT_URI,null,null,null,null);String[]from=newString[]{ContactsContract.Contacts.DISPLAY_NAME_PRIMARY};int[]to=newint[]{R.id.itemTextView};SimpleCursorAdapteradapter=newSimpleCursorAdapter(this,R.layout.listitemlayout,c,from,to,0);ListViewlv=(ListView)findViewById(R.id.contactListView);lv.setAdapter(adapter);lv.setOnItemClickListener(newListView.OnItemClickListener(){publicvoidonItemClick(AdapterView<?>parent,Viewview,intpos,longid){c.moveToPosition(pos);introwId=c.getInt(c.getColumnIndexOrThrow("_id"));UrioutURI=ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI,rowId);IntentoutData=newIntent();outData.setData(outURI);setResult(Activity.RESULT_OK,outData);finish();}});}}1.

創建一個活動繼承Activity,顯示activity_main界面;2.創建游標Cursor遍歷存儲在聯系人列表中的聯系人;3.構造簡單游標適配器(SimpleCursorAdapter),注意此方法標記為遺棄,后面需要加上參數0,版本SDK11+;4.將適配器綁定至ListView,setAdapter();5.添加項目點擊事件(setOnItemClickListener),將游標移植點擊位置,取出rowID,構造URI,將URI綁定至Intent,;6.返回結果,setResult(),結果碼(Activity_RESULT_OK)和Intent;位置:res->layout->activity_main.xml<RelativeLayoutxmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:paddingBottom="@dimen/activity_vertical_margin"><ListViewandroid:id="@+id/contactListView"android:layout_width="match_parent"android:layout_height="wrap_content"/></RelativeLayout>位置:res->layout->listitemlayout.xml<?xmlversion="1.0"encoding="utf-8"?><LinearLayoutxmlns:android="/apk/res/android"android:orientation="vertical"android:layout_width="match_parent"android:layout_height="match_parent"><TextViewandroid:id="@+id/itemTextView"android:layout_width="match_parent"android:layout_height="wrap_content"android:padding="10dp"android:textSize="16dp"android:textColor="#F0F"/></LinearLayout>位置:res->layout->contactpickertester.xml<?xmlversion="1.0"encoding="utf-8"?><LinearLayoutxmlns:android="/apk/res/android"android:orientation="vertical"android:layout_width="match_parent"android:layout_height="match_parent"><TextViewandroid:id="@+id/selected_contact_textview"android:layout_width="match_parent"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/pick_contact_button"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="PickContact"/></LinearLayout>位置:java->package->ContactPickerTester.javapackagemzx.spike.contactpicker.app;importandroid.app.Activity;importandroid.content.Intent;importandroid.database.Cursor;import.Uri;importandroid.os.Bundle;importvider.ContactsContract;importandroid.view.Menu;importandroid.view.MenuItem;importandroid.view.View;importandroid.widget.Button;importandroid.widget.TextView;/***CreatedbyAdministratoron14-3-20.*/publicclassContactPickerTesterextendsActivity{publicstaticfinalintPICK_CONTACT=1;@OverridepublicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.contactpickertester);Buttonbutton=(Button)findViewById(R.id.pick_contact_button);button.setOnClickListener(newView.OnClickListener(){@OverridepublicvoidonClick(Viewview){Intentintent=newIntent(Intent.ACTION_PICK,Uri.parse("content://contacts/"));startActivityForResult(intent,PICK_CONTACT);}});}@OverridepublicvoidonActivityResult(intreqCode,intresCode,Intentdata){super.onActivityResult(reqCode,resCode,data);switch(reqCode){case(PICK_CONTACT):{if(resCode==Activity.RESULT_OK){UricontactData=data.getData();Cursorc=getContentResolver().query(contactData,null,null,null,null);c.moveToFirst();Stringname=c.getString(c.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME_PRIMARY));c.close();TextViewtv=(TextView)findViewById(R.id.selected_contact_textview);tv.setText(name);}}default:break;}}}2.在onClick()方法中,指定Intent.ACTION_PICK動作,和聯系人數據庫("content://contacts/");3.重寫onActivityResult()事件,處理動作返回值,reqCode,請求碼,resCode,結果碼,

data,Intent數據;4.提取數據,更新ViewText的內容;位置:root->AndroidManifest.xml<?xmlversion="1.0"encoding="utf-8"?><manifestxmlns:android="/apk/res/android"package="mzx.spike.contactpicker.app"><uses-permissionandroid:name="android.permission.READ_CONTACTS"/><applicationandroid:allowBackup="true"android:icon="@drawable/ic_launcher"android:label="@string/app_name"android:theme="@style/AppTheme"><activityandroid:name=".ContactPicker"android:label="@strin