第九章 消息传送服务
第九章 消息传送服务
一．短信服务
1.通过编程发送短信可以发送和接收短信
Android有一个内置的短信应用
2.使用Intent发送短信
3.接收短信
4.警告
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.jfdimarzio.sms.MainActivity">
<Button
android:text="Send SMS"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/btnSendSMS"
android:onClick="onClick"
app:layout_constraintLeft_toLeftOf="@+id/activity_main"
app:layout_constraintTop_toTopOf="@+id/activity_main"
android:layout_marginTop="16dp"
app:layout_constraintRight_toRightOf="@+id/activity_main"
app:layout_constraintBottom_toBottomOf="@+id/activity_main"
android:layout_marginBottom="16dp" />
<TextView
android:text="TextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textView"
app:layout_constraintLeft_toLeftOf="@+id/btnSendSMS"
app:layout_constraintTop_toBottomOf="@+id/btnSendSMS"
android:layout_marginTop="8dp"
app:layout_constraintRight_toRightOf="@+id/btnSendSMS"
app:layout_constraintBottom_toBottomOf="@+id/activity_main"
android:layout_marginBottom="16dp" />
</android.support.constraint.ConstraintLayout>
package com.jfdimarzio.sms;
import android.Manifest;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import static android.Manifest.permission_group.SMS;
public class MainActivity extends AppCompatActivity {
final private int REQUEST_SEND_SMS = 123;
final private int REQUEST_REC_SMS = 321;
BroadcastReceiver smsSentReceiver;
IntentFilter intentFilter;
private BroadcastReceiver intentReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
//---display the SMS received in the TextView---
TextView SMSes = (TextView) findViewById(R.id.textView);
SMSes.setText(intent.getExtras().getString("sms"));
}
};
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.SEND_SMS)
!= PackageManager.PERMISSION_GRANTED ) {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.SEND_SMS},
REQUEST_SEND_SMS);
}
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.RECEIVE_SMS)
!= PackageManager.PERMISSION_GRANTED ) {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.RECEIVE_SMS},
REQUEST_REC_SMS);
}
intentFilter = new IntentFilter();
intentFilter.addAction("SMS_RECEIVED_ACTION");
registerReceiver(intentReceiver, intentFilter);
}
public void onResume() {
super.onResume();
//---register the receiver---
//registerReceiver(intentReceiver, intentFilter);
}
public void onPause() {
super.onPause();
//---unregister the receiver---
unregisterReceiver(intentReceiver);
}
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case REQUEST_SEND_SMS:
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(MainActivity.this, "SEND Permission Granted", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(MainActivity.this, "SEND Permission Denied", Toast.LENGTH_SHORT).show();
}
break;
case REQUEST_REC_SMS:
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(MainActivity.this, "RECEIVE Permission Granted", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(MainActivity.this, "RECEIVE Permission Denied", Toast.LENGTH_SHORT).show();
}
break;
default:
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
public void onClick(View v) {
sendSMS("5554", "Hello my friends!");
}
//---sends an SMS message to another device---
private void sendSMS(String phoneNumber, String message)
{
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(phoneNumber, null, message, null, null);
}
}
package com.jfdimarzio.sms;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.provider.Telephony;
import android.telephony.SmsMessage;
import android.util.Log;
import android.widget.Toast;
public class SMSReceiver extends BroadcastReceiver
{
public void onReceive(Context context, Intent intent)
{
//---get the SMS message passed in---
Bundle bundle = intent.getExtras();
SmsMessage[] msgs = null;
String str = "SMS from ";
if (bundle != null)
{
//---retrieve the SMS message received---
msgs = Telephony.Sms.Intents.getMessagesFromIntent(intent);
for (int i=0; i<msgs.length; i++){
str += msgs[i].getMessageBody().toString();
}
//---display the new SMS message---
Toast.makeText(context, str, Toast.LENGTH_SHORT).show();
Log.d("SMSReceiver", str);
//---launch the SMSActivity---
Intent mainActivityIntent = new Intent(context, MainActivity.class);
mainActivityIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(mainActivityIntent);
Intent broadcastIntent = new Intent();
broadcastIntent.setAction("SMS_RECEIVED_ACTION");
broadcastIntent.putExtra("sms", str);
context.sendBroadcast(broadcastIntent);
}
}
}
二．发送电子邮件
为了示例能正常工作，必须在模拟器中配置Email应用
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.jfdimarzio.emails.MainActivity">
<Button
android:text="Send Email"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/btnSendEmail"
app:layout_constraintLeft_toLeftOf="@+id/activity_main"
app:layout_constraintTop_toTopOf="@+id/activity_main"
app:layout_constraintRight_toRightOf="@+id/activity_main"
app:layout_constraintBottom_toBottomOf="@+id/activity_main"
android:onClick="onClick" />
</android.support.constraint.ConstraintLayout>
package com.jfdimarzio.emails;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends AppCompatActivity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void onClick(View v) {
//---replace the following email addresses with real ones---
String[] to =
{"someguy@example.com",
"anotherguy@example.com"};
String[] cc = {"busybody@example.com"};
sendEmail(to, cc, "Hello", "Hello my friends!");
}
//---sends an SMS message to another device---
private void sendEmail(String[] emailAddresses, String[] carbonCopies,
String subject, String message)
{
Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent.setData(Uri.parse("mailto:"));
String[] to = emailAddresses;
String[] cc = carbonCopies;
emailIntent.putExtra(Intent.EXTRA_EMAIL, to);
emailIntent.putExtra(Intent.EXTRA_CC, cc);
emailIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
emailIntent.putExtra(Intent.EXTRA_TEXT, message);
emailIntent.setType("message/rfc822");
startActivity(Intent.createChooser(emailIntent, "Email"));
}
}
