刚学安卓，最近在写一个短信的收发程序，但是在模拟器上面可以收发，在真机上面却不行，解决办法：
对于收短信，由于现在很多手机系统对短信、电话等状态的读取设置了很多权限，需要手动去打开（目前不会用代码申请这些权限），例如在小米5手机上面找到应用的权限管理，打开Message这个应用（编写程序的名字）的所有权限：

这样接收短信就没什么问题了，然后在manifest文件里面加上android.permission.RECEIVE_SMS权限就可以正常的收短信。但是对于发短信还是有问题，只加android.permission.SEND_SMS这个权限，并不能正常的发短信，通过adb logcat抓取手机里面的log可以看到还少了一项权限：android.permission.READ_PHONE_STATE，原因是发短信也是要读取手机本身的状态的。加上这个权限就可以愉快的发短信了。

主要源码如下：
只有一个源文件MainActivity.java

public class MainActivity extends Activity {

	private TextView tv_from;
	private TextView tv_content;
	private MessageReceiver messageReceiver;
	private EditText et_send_number;
	private EditText et_send_content;
	private SendStatusReceiver sendStatusReceiver;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		tv_from = (TextView) findViewById(R.id.tv_from);
		tv_content = (TextView) findViewById(R.id.tv_content);
		et_send_number = (EditText) findViewById(R.id.et_send_number);
		et_send_content = (EditText) findViewById(R.id.et_send_content);

		// 动态注册短信广播接收者
		IntentFilter intentFilter = new IntentFilter();
		intentFilter.addAction("android.provider.Telephony.SMS_RECEIVED");
		messageReceiver = new MessageReceiver();
		registerReceiver(messageReceiver, intentFilter);
		// 注册发送状态监听广播接收者
		IntentFilter intentFilter2 = new IntentFilter();
		intentFilter2.addAction("SEND_SMS_ACTION");
		sendStatusReceiver = new SendStatusReceiver();
		registerReceiver(sendStatusReceiver, intentFilter2);
	}

	public void click_send(View v) {
		String sendNumber = et_send_number.getText().toString();
		String sendContent = et_send_content.getText().toString();
		SmsManager smsManager = SmsManager.getDefault();

		Intent sendIntent = new Intent("SEND_SMS_ACTION");
		PendingIntent pendingIntent = PendingIntent.getBroadcast(
				getApplicationContext(), 0, sendIntent, 0);
		// 发送短信
		smsManager.sendTextMessage(sendNumber, null, sendContent,
				pendingIntent, null);
	}

	@Override
	protected void onDestroy() {
		super.onDestroy();
		unregisterReceiver(messageReceiver);
		unregisterReceiver(sendStatusReceiver);
	}

	class MessageReceiver extends BroadcastReceiver {

		@Override
		public void onReceive(Context context, Intent intent) {
			Bundle bundle = intent.getExtras();
			Object[] pdus = (Object[]) bundle.get("pdus");
			SmsMessage[] message = new SmsMessage[pdus.length];
			for (int i = 0; i < message.length; ++i) {
				message[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
			}

			String originatingAddress = message[0].getOriginatingAddress();
			String fullMessage = new String();
			for (SmsMessage smsMessage : message) {

				fullMessage += smsMessage.getMessageBody();
			}
			tv_from.setText(originatingAddress);
			tv_content.setText(fullMessage);

		}

	}

	class SendStatusReceiver extends BroadcastReceiver {

		@Override
		public void onReceive(Context arg0, Intent arg1) {
			if (getResultCode() == RESULT_OK) {
				// 短信发送成功
				Toast.makeText(arg0, "send successful", Toast.LENGTH_SHORT)
						.show();
			} else {
				Toast.makeText(arg0, "send fail", Toast.LENGTH_SHORT).show();
			}
		}

	}
}

manifest文件清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.message"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="17"
        android:targetSdkVersion="21" />

    <uses-permission android:name="android.permission.RECEIVE_SMS" />
    <uses-permission android:name="android.permission.SEND_SMS" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".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>