選擇聯繫人併發送短信（ACTION_PICK與Uri對象）

<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;
	@Override
	protected 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() {
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Intent intent=new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
				startActivityForResult(intent, REQUEST_CODE);
			}
		});
		
		
	}
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
		// TODO Auto-generated method stub
		if (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, "發送成功", 1).show();
			}
		}
		super.onActivityResult(requestCode, resultCode, intent);
	}

}

佈局文件：

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;
	@Override
	protected 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() {
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Intent intent=new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
				startActivityForResult(intent, REQUEST_CODE);
			}
		});
		
		
	}
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
		// TODO Auto-generated method stub
		if (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, "發送成功", 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>