选择联系人并发送短信（ACTION_PICK与Uri对象）

<span style="font-family: Arial, Helvetica, sans-serif;">import android.support.v7.app.ActionBarActivity;</span>

import android.telephony.SmsManager;import android.support.v7.app.ActionBar;import android.support.v4.app.Fragment;import android.os.Bundle;import android.provider.ContactsContract;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;import android.app.PendingIntent;import android.content.Intent;import android.database.Cursor;import android.net.Uri;import android.os.Build;public class MainActivity extends ActionBarActivity {private TextView tv,tv2;private Button bt;private final int REQUEST_CODE=2;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.fragment_main);tv=(TextView) findViewById(R.id.textView1);tv2=(TextView) findViewById(R.id.textView2);bt=(Button) findViewById(R.id.button1);bt.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubIntent intent=new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);startActivityForResult(intent, REQUEST_CODE);}});}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent intent) {// TODO Auto-generated method stubif (requestCode==REQUEST_CODE) {if (resultCode==RESULT_OK) {Uri uri=intent.getData();Cursor cursor=managedQuery(uri, null, null, null, null);if (cursor!=null) {cursor.moveToFirst();}String contactID=cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));Cursor phoneCursor=getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID+"="+contactID, null, null);if (phoneCursor!=null) {phoneCursor.moveToFirst();}String contactName=phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));String phoneNum=phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));String message=tv.getText().toString();SmsManager smsManager=SmsManager.getDefault();PendingIntent setIntent= PendingIntent.getActivity(MainActivity.this, 1, new Intent(), 1);smsManager.sendTextMessage(phoneNum, null, message, setIntent, null);tv2.setText(contactName+":"+phoneNum);Toast.makeText(MainActivity.this, "发送成功", 1).show();}}super.onActivityResult(requestCode, resultCode, intent);}}

布局文件：

package com.example.choosecontactsandsendsms;import android.support.v7.app.ActionBarActivity;import android.telephony.SmsManager;import android.support.v7.app.ActionBar;import android.support.v4.app.Fragment;import android.os.Bundle;import android.provider.ContactsContract;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;import android.app.PendingIntent;import android.content.Intent;import android.database.Cursor;import android.net.Uri;import android.os.Build;public class MainActivity extends ActionBarActivity {private TextView tv,tv2;private Button bt;private final int REQUEST_CODE=2;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.fragment_main);tv=(TextView) findViewById(R.id.textView1);tv2=(TextView) findViewById(R.id.textView2);bt=(Button) findViewById(R.id.button1);bt.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubIntent intent=new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);startActivityForResult(intent, REQUEST_CODE);}});}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent intent) {// TODO Auto-generated method stubif (requestCode==REQUEST_CODE) {if (resultCode==RESULT_OK) {Uri uri=intent.getData();Cursor cursor=managedQuery(uri, null, null, null, null);if (cursor!=null) {cursor.moveToFirst();}String contactID=cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));Cursor phoneCursor=getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID+"="+contactID, null, null);if (phoneCursor!=null) {phoneCursor.moveToFirst();}String contactName=phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));String phoneNum=phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));String message=tv.getText().toString();SmsManager smsManager=SmsManager.getDefault();PendingIntent setIntent= PendingIntent.getActivity(MainActivity.this, 1, new Intent(), 1);smsManager.sendTextMessage(phoneNum, null, message, setIntent, null);tv2.setText(contactName+":"+phoneNum);Toast.makeText(MainActivity.this, "发送成功", 1).show();}}super.onActivityResult(requestCode, resultCode, intent);}}

AndroidManifest.xml文件

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.choosecontactsandsendsms"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="19" />    <uses-permission android:name="android.permission.READ_CONTACTS"/>    <uses-permission android:name="android.permission.SEND_SMS"/>    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.example.choosecontactsandsendsms.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>