短信android studio权限问题

Question

所以，我在 android 工作室中有这个 SMS 应用程序。当运行这是第一次时，它 pop:ed 发出 window 请求许可，因此 SMS 已发送。但后来它从不请求权限和短信发送。谁能帮我？

这是我的主要 class。

package com.example.xbhatti.sms4;

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.app.Activity;

import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.telephony.SmsManager;

import android.util.Log;
import android.view.Menu;
import android.view.View;

import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

 public class MainActivity extends Activity {
private static final int MY_PERMISSIONS_REQUEST_SEND_SMS =0 ;
Button sendBtn;
EditText txtphoneNo;
EditText txtMessage;
String phoneNo;
String message;

@Override
    public void onRequestPermissionsResult(int requestCode,String permissions[], int[] grantResults) {
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_SEND_SMS: {
            if (grantResults.length > 0
                    && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                SmsManager smsManager = SmsManager.getDefault();
                smsManager.sendTextMessage(phoneNo, null, message, null, null);
                Toast.makeText(getApplicationContext(), "SMS sent.",
                        Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(getApplicationContext(),
                        "SMS faild, please try again.", Toast.LENGTH_LONG).show();
                return;
            }
        }
    }

}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);

    sendBtn = (Button) findViewById(R.id.btnSendSMS);
    txtphoneNo = (EditText) findViewById(R.id.editText);
    txtMessage = (EditText) findViewById(R.id.editText2);

    sendBtn.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            sendSMSMessage();
        }
    });
}



protected void sendSMSMessage() {
    phoneNo = txtphoneNo.getText().toString();
    message = txtMessage.getText().toString();

    if (ContextCompat.checkSelfPermission(this,
            Manifest.permission.SEND_SMS)
            != PackageManager.PERMISSION_GRANTED) {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                Manifest.permission.SEND_SMS)) {
        } else {
            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.SEND_SMS},
                    MY_PERMISSIONS_REQUEST_SEND_SMS);
        }
    }
}


}

这是我的 xml 文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.xbhatti.sms4.MainActivity">

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Sending SMS Example"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:textSize="30dp" />

<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Tutorials point "
    android:textColor="#ff87ff09"
    android:textSize="30dp"
    android:layout_below="@+id/textView1"
    android:layout_alignRight="@+id/imageButton"
    android:layout_alignEnd="@+id/imageButton" />

<ImageButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/imageButton"
    android:layout_below="@+id/textView2"
    android:layout_centerHorizontal="true" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/editText"
    android:hint="Enter Phone Number"
    android:phoneNumber="true"
    android:textColorHint="@color/abc_primary_text_material_dark"
    android:layout_below="@+id/imageButton"
    android:layout_centerHorizontal="true" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/editText2"
    android:layout_below="@+id/editText"
    android:layout_alignLeft="@+id/editText"
    android:layout_alignStart="@+id/editText"
    android:textColorHint="@color/abc_primary_text_material_dark"
    android:layout_alignRight="@+id/imageButton"
    android:layout_alignEnd="@+id/imageButton"
    android:hint="Enter SMS" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Send Sms"
    android:id="@+id/btnSendSMS"
    android:layout_below="@+id/editText2"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="48dp" />


</RelativeLayout>

这是我的主要 xml 文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.xbhatti.sms4">

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


<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=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

</manifest>

Answer 1

public boolean haveSendSMSPermission() {
    if (Build.VERSION.SDK_INT >= 23) {
        if (getApplicationContext().checkSelfPermission(android.Manifest.permission.SEND_SMS) == PackageManager.PERMISSION_GRANTED) {
            return true;
        } else {
            ActivityCompat.requestPermissions(getApplicationContext() , new String[]{Manifest.Manifest.permission.SEND_SMS}, 1);
            return false;
        }
    }else {
        return true;
    }
}

只需在您的应用启动时使用此方法

Answer 2

从 SDK 23 及更高版本开始，实时请求权限，一旦授予，将不会再次请求。

因此，我认为这是你的问题。如果已经授予了发送短信的权限，则没有 else 语句。

if (ContextCompat.checkSelfPermission(this, 
                Manifest.permission.SEND_SMS)
                != PackageManager.PERMISSION_GRANTED) {
            if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                    Manifest.permission.SEND_SMS)) {
            } else {
                ActivityCompat.requestPermissions(this,
                        new String[]{Manifest.permission.SEND_SMS},
                        MY_PERMISSIONS_REQUEST_SEND_SMS);
            }
    } else {
        SmsManager smsManager = SmsManager.getDefault();
        smsManager.sendTextMessage(phoneNo, null, message, null, null);
        Toast.makeText(getApplicationContext(), "SMS sent.",
                    Toast.LENGTH_LONG).show();
    }

参考 https://developer.android.com/guide/topics/permissions/requesting.html

Answer 3

问题现已解决。我只需要补充一下。

                  SmsManager smsManager = SmsManager.getDefault();
            smsManager.sendTextMessage(phoneNo, null, message, null, null);
            Toast.makeText(getApplicationContext(), "SMS sent.",
                    Toast.LENGTH_LONG).show();

在 sendSMS() 中

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