如何在Android中监听短信状态？

在Android开发中，监听短信发送状态是一个常见需求，实现这一功能需要通过广播接收器（BroadcastReceiver）来监听系统发送的短信广播，以下是详细的步骤和代码示例：

一、添加权限和依赖项

需要在AndroidManifest.xml文件中添加发送短信的权限：

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

需要在应用的build.gradle文件中添加必要的依赖项：

dependencies {
    implementation 'com.android.support:support-annotations:28.0.0'
}

二、创建发送短信的方法

在MainActivity中创建一个方法，用于发送短信并设置监听器：

public class MainActivity extends AppCompatActivity {
    private TextView status;
    private EditText phone, content;
    private Button sendButton;
    private myServiceReceiver mReceiver01, mReceiver02;
    private String SMS_SEND_ACTION = "SMS_SEND_ACTION";
    private String SMS_DELIVERED_ACTION = "SMS_DELIVERED_ACTION";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        status = findViewById(R.id.textview01);
        phone = findViewById(R.id.phone);
        content = findViewById(R.id.smscontent);
        sendButton = findViewById(R.id.send);
        mReceiver01 = new myServiceReceiver();
        mReceiver02 = new myServiceReceiver();
        sendButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String phoneNumber = phone.getText().toString().trim();
                String message = content.getText().toString().trim();
                sendSMS(phoneNumber, message);
            }
        });
    }
    private void sendSMS(String phoneNumber, String message) {
        SmsManager smsManager = SmsManager.getDefault();
        Intent itSend = new Intent(SMS_SEND_ACTION);
        Intent itDeliver = new Intent(SMS_DELIVERED_ACTION);
        PendingIntent sendPI = PendingIntent.getBroadcast(this, 0, itSend, 0);
        PendingIntent deliverPI = PendingIntent.getBroadcast(this, 0, itDeliver, 0);
        smsManager.sendTextMessage(phoneNumber, null, message, sendPI, deliverPI);
        status.setText("短信正在发送中...");
    }
}

三、注册并创建监听发送状态的BroadcastReceiver

创建一个自定义的BroadcastReceiver类，用于监听短信发送状态：

public class myServiceReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        switch (getResultCode()) {
            case Activity.RESULT_OK:
                Toast.makeText(context, "短信发送成功", Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                Toast.makeText(context, "短信发送失败，通用错误", Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_NO_SERVICE:
                Toast.makeText(context, "短信发送失败，无服务", Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_NULL_PDU:
                Toast.makeText(context, "短信发送失败，PDU为空", Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_RADIO_OFF:
                Toast.makeText(context, "短信发送失败，无线电关闭", Toast.LENGTH_SHORT).show();
                break;
        }
    }
}

四、动态注册和反注册广播接收器

在MainActivity中动态注册和反注册广播接收器：

@Override
protected void onResume() {
    super.onResume();
    registerReceiver(mReceiver01, new IntentFilter(SMS_SEND_ACTION));
    registerReceiver(mReceiver02, new IntentFilter(SMS_DELIVERED_ACTION));
}
@Override
protected void onPause() {
    super.onPause();
    unregisterReceiver(mReceiver01);
    unregisterReceiver(mReceiver02);
}

五、相关问题与解答

问题1：如何确保短信发送状态能够被正确监听？

答：确保在AndroidManifest.xml文件中声明了所需的权限，并在MainActivity中正确注册和反注册广播接收器，检查BroadcastReceiver中的onReceive方法是否正确处理不同的结果码。

问题2：如何处理短信发送失败的情况？

答：在BroadcastReceiver的onReceive方法中，根据getResultCode()返回的结果码进行处理，对于RESULT_ERROR_GENERIC_FAILURE，可以提示用户“短信发送失败，通用错误”，对于其他错误码，也可以进行相应的处理。

到此，以上就是小编对于“android监听短信状态”的问题就介绍到这了，希望介绍的几点解答对大家有用，有任何问题和不懂的，欢迎各位朋友在评论区讨论，给我留言。