我不能在安卓api23中呼叫号码

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

if (telephonyManager != null && telephonyManager.getPhoneType() != TelephonyManager.PHONE_TYPE_NONE) {
    // 设备支持拨号功能
} else {
    // 设备不支持拨号功能
}

String phoneNumber = "1234567890";
Intent dialIntent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + phoneNumber));

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

if (ContextCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CALL_PHONE}, REQUEST_CALL_PHONE_PERMISSION);
} else {
    // 已经具有拨打电话的权限，可以直接拨号
    startActivity(dialIntent);
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    if (requestCode == REQUEST_CALL_PHONE_PERMISSION) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            // 用户授予了拨打电话的权限，可以拨号
            startActivity(dialIntent);
        } else {
            // 用户拒绝了拨打电话的权限请求，可以给出相应提示
        }
    }
}