Question

我已经检查了已经发布的解决方案，以解决建议我放入权限检查的错误。

使用targetSdkVersion 26-和Android Studio 3.2

我在YouTube应用程序中设置了一条短信（来自youtube教程）。我在两个单独的设备上有两个应用程序。我希望App A的用户能够与App B的用户进行交流。我在本教程的两个App中都输入了相同的代码

Sending and Receiving Messages or SMS - Android Studio Tutorial

首先，当我运行应用程序时，出现错误：

Sending SMS Message: uid 10085 does not have android.permission.SEND_SMS

因此，我在按钮onclick（）中添加了权限检查

现在，当我运行应用程序时，尝试发送时没有任何反应。

清单

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

 <application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".Activities.RiderActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <receiver android:name=".MessageReceiver">
        <intent-filter>
            <action android:name="android.provider.Telephony.SMS_RECEIVED"/>
        </intent-filter>
    </receiver>

SMS_Activity

private BroadcastReceiver intentReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        // display the message in the textView
        TextView inTxt = (TextView) findViewById(R.id.textMsg);
        inTxt.setText(intent.getExtras().getString("message"));
    }
};


btnSend.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String myMsg = tvMessage.getText().toString();
            String theNumber = tvNumber.getText().toString();
            if (ContextCompat.checkSelfPermission(SMS_Activity.this, Manifest.permission.SEND_SMS)
                    != PackageManager.PERMISSION_GRANTED) {
                // Permission is not granted
            } else {
                sendMsg(theNumber, myMsg);
            }
        }
    });


protected void sendMsg(String theNumber, String myMsg) {

    String SENT = "Message Sent";
    String DELIVERED = "Message Delivered";

    PendingIntent sentPI = PendingIntent.getBroadcast(this, 0, new
            Intent(SENT), 0);
    PendingIntent deliveredPI = PendingIntent.getBroadcast(this, 0,
            new Intent(DELIVERED), 0);

    SmsManager sms = SmsManager.getDefault();
    sms.sendTextMessage(theNumber, null, myMsg, sentPI, null);
}

编辑

添加了onRequestPermissionsResult：

 @Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_SEND_SMS: {
            if (permissions[0].equalsIgnoreCase
                    (Manifest.permission.SEND_SMS)
                    && grantResults[0] ==
                    PackageManager.PERMISSION_GRANTED) {
                // Permission was granted.
            } else {
                // Permission denied. Stop the app.
                Log.d(TAG, getString(R.string.failure_permission));
                Toast.makeText(this,
                        getString(R.string.failure_permission),
                        Toast.LENGTH_SHORT).show();
            }
        }
    }
}

更新了btnSend.setOnClickListener：

btnSend.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String myMsg = tvMessage.getText().toString();
            String theNumber = tvNumber.getText().toString();
            if (ContextCompat.checkSelfPermission(SMS_Activity.this, Manifest.permission.SEND_SMS)
                    != PackageManager.PERMISSION_GRANTED) {
                // Permission is not granted
                ActivityCompat.requestPermissions(SMS_Activity.this,
                        new String[]{Manifest.permission.SEND_SMS}, 1);
                sendMsg(theNumber, myMsg);
            }
        }
    });

编辑＃2

按照建议，我遵循了本教程：

Android Apps - Phone Calls and SMS

给我这个错误：

java.lang.IllegalStateException: Could not execute method for android:onClick
Caused by: java.lang.SecurityException: Neither user 10085 nor current process has android.permission.READ_PHONE_STATE.

然后我进行了以下更改：

AndroidManifest-添加：

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

SMSActivity-添加：

private static final int MY_PERMISSIONS_REQUEST_READ_PHONE_STATE = 2;

... checkforPermissions（）//在onCreate且在smsManager之前运行

if (ActivityCompat.checkSelfPermission(this,
            Manifest.permission.SEND_SMS) !=
            PackageManager.PERMISSION_GRANTED) {
        Log.d(TAG, getString(R.string.permission_not_granted));

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

            Log.d(TAG, getString(R.string.permission_not_granted));

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

        }

    } else {
        // Permission already granted. Enable the SMS button.
        enableSmsButton();
    }

... onRequestPermissionsResult（）

// Check if permission is granted or not for the request.
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_SEND_SMS: {
            if (permissions[0].equalsIgnoreCase
                    (Manifest.permission.SEND_SMS)
                    && grantResults[0] ==
                    PackageManager.PERMISSION_GRANTED) {

                // Permission was granted. Enable sms button.
                enableSmsButton();

            } else {
                // Permission denied.
                Log.d(TAG, getString(R.string.failure_permission));
                Toast.makeText(this,
                        getString(R.string.failure_permission),
                        Toast.LENGTH_LONG).show();
                // Disable the sms button.
                disableSmsButton();
            }
        }

        break;

        case MY_PERMISSIONS_REQUEST_READ_PHONE_STATE: {
            if (permissions[0].equalsIgnoreCase
                    (Manifest.permission.READ_PHONE_STATE)
                    && grantResults[0] ==
                    PackageManager.PERMISSION_GRANTED) {

                // Permission was granted. Enable sms button.
                enableSmsButton();

            } else {
                // Permission denied.
                Log.d(TAG, getString(R.string.failure_permission));
                Toast.makeText(this,
                        getString(R.string.failure_permission),
                        Toast.LENGTH_LONG).show();
                // Disable the sms button.
                disableSmsButton();
            }
        }

        break;

        default:
            break;
    }

现在，当我运行应用程序时，出现与上述相同的错误。

已解决的问题

SMSACTIVITY

private static final int REQUEST_ID_MULTIPLE_PERMISSIONS = 1;

private boolean checkAndRequestPermissions() {

    int permissionSendSms = ContextCompat.checkSelfPermission(this,
            Manifest.permission.SEND_SMS);
    int permissionReceiveSms = ContextCompat.checkSelfPermission(this,
            Manifest.permission.RECEIVE_SMS);
    int permissionReadPhoneState = ContextCompat.checkSelfPermission(this,
            Manifest.permission.READ_PHONE_STATE);

    List<String> listPermissionsNeeded = new ArrayList<>();
    if (permissionSendSms != PackageManager.PERMISSION_GRANTED) {
        listPermissionsNeeded.add(Manifest.permission.SEND_SMS);
    }

    if (permissionReceiveSms != PackageManager.PERMISSION_GRANTED) {
        listPermissionsNeeded.add(Manifest.permission.RECEIVE_SMS);
    }

    if (permissionReadPhoneState != PackageManager.PERMISSION_GRANTED) {
        listPermissionsNeeded.add(Manifest.permission.READ_PHONE_STATE);
    }

    if (!listPermissionsNeeded.isEmpty()) {
        ActivityCompat.requestPermissions(this, listPermissionsNeeded.toArray(new
                String[listPermissionsNeeded.size()]), REQUEST_ID_MULTIPLE_PERMISSIONS);
        return false;
    }
    return true;
}


@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);

    switch(requestCode) {
        case REQUEST_ID_MULTIPLE_PERMISSIONS: {
            // Check if permission is granted or not for the request.
            if (grantResults.length == 0 || grantResults == null) {
                /*If result is null*/
                disableSmsButton();

            } else if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                /*If We accept permission*/
                if (getIntent() != null) {
                    phone_no = getIntent().getStringExtra("phone");
                    Log.e(TAG, "phoneNo = " + phone_no);


                }

                enableSmsButton();

            } else if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
                /*If We Decline permission*/
                disableSmsButton();
            }
        }
    }
}

现在一切都很好！

Answer 1

目前，您的应用尚未授予短信许可，因此它正在运行// Permission is not granted，这是一段相当平稳的代码行。您可以将ActivityCompat API与

一起使用以请求权限

ActivityCompat.requestPermissions(
    this,
    new String[]{Manifest.permission.SEND_SMS},
    1
);

您可以使用onRequestPermissionsResult来捕获此事件，然后如果他们给您访问权限，则继续正常进行；如果他们拒绝访问，则显示Toast或其他内容。

Android无法将文本发送到另一台设备

编辑

编辑＃2

1 个答案: