怎么监听android手机号码

在Android上手机号码，可以使用TelephonyManager类来实现。以下是一个示例代码：

```java

import android.Manifest;

import android.content.Context;

import android.content.pm.PackageManager;

import android.support.v4.app.ActivityCompat;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.telephony.PhoneStateListener;

import android.telephony.TelephonyManager;

import android.util.Log;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

private static final int REQUEST_CODE = 1;

private static final String TAG = "MainActivity";

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

// 检查权限并请求

if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {

ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_PHONE_STATE}, REQUEST_CODE);

} else {

// 权限已授予，开始

startPhoneStateListener();

}

}

// 函数

private void startPhoneStateListener() {

TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

telephonyManager.listen(new PhoneStateListener() {

@Override

public void onCallStateChanged(int state, String incomingNumber) {

super.onCallStateChanged(state, incomingNumber);

switch (state) {

case TelephonyManager.CALL_STATE_IDLE:

//电话空闲状态

break;

case TelephonyManager.CALL_STATE_RINGING:

//电话响铃状态

Log.d(TAG, "Incoming call: " + incomingNumber);

Toast.makeText(MainActivity.this, "Incoming call: " + incomingNumber, Toast.LENGTH_SHORT).show();

break;

case TelephonyManager.CALL_STATE_OFFHOOK:

//电话接起状态

break;

}

}

}, PhoneStateListener.LISTEN_CALL_STATE);

}

// 权限请求结果处理

@Override

public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

if (requestCode == REQUEST_CODE) {

if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

// 权限已授予，开始

startPhoneStateListener();

} else {

// 权限被拒绝

Toast.makeText(this, "Permission denied", Toast.LENGTH_SHORT).show();

}

}

}

}

```

在AndroidManifest.xml中添加以下权限：

```xml

```

这样当有电话呼入时，可以在Logcat中看到呼入号码，并且弹出一个Toast提示。