http://blog.csdn.net/t12x3456/article/details/17339657
开发中，难免会遇到各种各样的适配问题，尤其是经过深度修改定制过的系统，有的无论是软硬件上都有很大的区别,这里不得不提到一种奇葩的机型，没错，那就是双卡双待的手机（比如XT800， A60， S8600 ， Lenovo A750，中兴V889D等）.由于是双SIM卡，而且两个卡槽支持的运营商或者网络制式不一定相同,比如一个卡槽支持WCDMA,另一个却只支持GSM ,导致用正常方法解析短信很容易遇到异常
想深入了解双卡双待手机短信发送与接收流程的话，请看我之前关于 MMS的分析：
Android 短信模块分析(四) MMS之短信的发送与接收
这里先看下解决方案,这里需要以反射的方式解析不同类型的短信，并且对于不同机型，需对应地进行调整适配:
获取短信信息，注意：为解决双卡双待手机解析短信异常问题，使用Java反射机制，优先解析GSM类型的短信，假如解析失败才按CDMA类型的短信进行解析）
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public static SmsMessage[] getSmsMessage(Intent intent) {
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SmsMessage[] msgs = null;
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Object messages[] = (Object[]) intent.getSerializableExtra("pdus");
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int len = 0;
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if (null != messages && (len = messages.length) > 0) {
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msgs = new SmsMessage[len];
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try {
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for (int i = 0; i < len; i++) {
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SmsMessage message = null;
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if ("GSM".equals(intent.getStringExtra("from"))) {
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message = createFromPduGsm((byte[]) messages[i]);
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} else if ("CDMA".equals(intent.getStringExtra("from"))) {
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message = createFromPduCdma((byte[]) messages[i]);
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} else {
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message = SmsMessage.createFromPdu((byte[]) messages[i]);
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}
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if (null == message) {
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message = createFromPduGsm((byte[]) messages[i]);
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if (null == message) {
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message = createFromPduCdma((byte[]) messages[i]);
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}
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}
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if (null != message) {
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msgs[i] = message;
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}
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}
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} catch (Exception e) {
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e.printStackTrace();
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msgs = getSmsMessageByReflect(intent);
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} catch (Error er) {
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er.printStackTrace();
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msgs = getSmsMessageByReflect(intent);
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}
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}
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return msgs;
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}
反射方式获取短信
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private static SmsMessage[] getSmsMessageByReflect(Intent intent) {
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SmsMessage[] msgs = null;
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Object messages[] = (Object[]) intent.getSerializableExtra("pdus");
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int len = 0;
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if (null != messages && (len = messages.length) > 0) {
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msgs = new SmsMessage[len];
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try {
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for (int i = 0; i < len; i++) {
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SmsMessage message = createFromPduGsm((byte[]) messages[i]);
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if (null == message) {
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message = createFromPduCdma((byte[]) messages[i]);
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}
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if (null != message) {
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msgs[i] = message;
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}
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}
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} catch (SecurityException e) {
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e.printStackTrace();
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} catch (IllegalArgumentException e) {
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e.printStackTrace();
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} catch (ClassNotFoundException e) {
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e.printStackTrace();
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} catch (NoSuchMethodException e) {
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e.printStackTrace();
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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} catch (InvocationTargetException e) {
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e.printStackTrace();
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} catch (InstantiationException e) {
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e.printStackTrace();
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}
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}
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return msgs;
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}
通过Java反射机制解析GSM类型的短信:
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private static SmsMessage createFromPduGsm(byte[] pdu) throws SecurityException, IllegalArgumentException, ClassNotFoundException, NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
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return createFromPdu(pdu, "com.android.internal.telephony.gsm.SmsMessage");
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}
解析CDMA类型的短信
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private static SmsMessage createFromPduCdma(byte[] pdu) throws SecurityException, IllegalArgumentException, ClassNotFoundException, NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
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return createFromPdu(pdu, "com.android.internal.telephony.cdma.SmsMessage");
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}
解析GSM或者CDMA类型的短信
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private static SmsMessage createFromPdu(byte[] pdu, String className) throws ClassNotFoundException, SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException, InstantiationException {
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Class<?> clazz = Class.forName(className);
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Object object = clazz.getMethod("createFromPdu", byte[].class).invoke(clazz.newInstance(), pdu);
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if (null != object) {
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Constructor<?> constructor = SmsMessage.class.getDeclaredConstructor(Class.forName("com.android.internal.telephony.SmsMessageBase"));
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constructor.setAccessible(true);
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return (SmsMessage) constructor.newInstance(object);
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} else {
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return null;
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}
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}
python中的迭代对象、迭代器、生成器
