您好,可以使用以下代码实现Android拦截发送短信:
1.首先在AndroidManifest.xml文件中添加必要的权限:
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.SEND_SMS" />
<uses-permission android:name="android.permission.WRITE_SMS" />
2.在代码中注册BroadcastReceiver以拦截发送的短信:
public class SmsReceiver extends BroadcastReceiver {
private static final String TAG = "SmsReceiver";
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")) {
Bundle bundle = intent.getExtras();
if (bundle != null) {
Object[] pdus = (Object[]) bundle.get("pdus");
SmsMessage[] messages = new SmsMessage[pdus.length];
for (int i = 0; i < pdus.length; i++) {
messages[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
}
String phoneNumber = messages[0].getOriginatingAddress();
String content = "";
for (SmsMessage message : messages) {
content += message.getMessageBody();
}
Log.d(TAG, "phoneNumber: " + phoneNumber + ", content: " + content);
abortBroadcast();//拦截发送的短信
}
}
}
}
3.注册BroadcastReceiver以接收短信:
SmsReceiver smsReceiver = new SmsReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction("android.provider.Telephony.SMS_RECEIVED");
registerReceiver(smsReceiver, filter);
4.在BroadcastReceiver中可以根据短信内容进行判断和处理,比如发送自定义短信:
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phoneNumber, null, "自定义短信", null, null);
以上就是Android拦截发送短信的简单实现方法,希望对您有所帮助。
在Android中,可以通过以下方法拦截并发送短信:
- 使用SmsManager类发送短信,该类可以直接发送短信,但需要用户授权。
- 注册BroadcastReceiver监听ACTION_SENDTO和ACTION_VIEW Intent,以拦截发送短信的Intent,其中ACTION_SENDTO是指当用户点击短信发送按钮时发出的Intent,而ACTION_VIEW则是用户从联系人列表点击发送短信时发出的Intent。
- 在BroadcastReceiver中可以通过拦截短信的Intent来获取短信的内容和目标号码,然后进行拦截或修改。
实现拦截短信的具体方法可以参考以下代码:
public class SmsInterceptor extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals("android.provider.Telephony.SMS_RECEIVED")) {
// 获取短信内容和号码
Object[] pdus = (Object[]) intent.getExtras().get("pdus");
if (pdus != null && pdus.length > 0) {
StringBuilder builder = new StringBuilder();
String sender = null;
for (int i = 0; i < pdus.length; i++) {
SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) pdus[i]);
builder.append(smsMessage.getMessageBody());
if (sender == null) {
sender = smsMessage.getOriginatingAddress();
}
}
String message = builder.toString();
// 判断是否需要拦截短信
if (needFilter(sender, message)) {
// 拦截短信
abortBroadcast();
}
}
}
}
private boolean needFilter(String sender, String message) {
// TODO 拦截逻辑
return false;
}
}
在AndroidManifest.xml文件中注册广播接收器:
<receiver
android:name=".SmsInterceptor"
android:enabled="true"
android:exported="true">
<intent-filter android:priority="2147483647">
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
需要注意的是,上述代码中需要在AndroidManifest.xml文件中添加权限:
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.SEND_SMS" />
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