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Android

[Android] 권한 획득

best 2016. 7. 25. 14:36

안드로이드 권한 획득



권한 획득하기


- 마시멜로우(Marshmallow) 이전 버전


AndroidMenifest.xml에 <use-permission>으로 권한을 얻을 수 있다.

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

- 마시멜로우(Marshmallow) 버전


AndroidMenifest.xml에 <use-permission>으로 권한을 얻고,


실시간으로 권한을 허가하는 작업이 추가로 필요하다.




마시멜로우 버전인지 아닌지에 따라 필요한 코드가 달라지므로 버전이 마시멜로우 인지 확인해야 한다.


마시멜로우가 맞다면, 권한에 대해서 허가, 거부 한적이 있는지 확인한다.




MainActivity


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package com.ktds.jmj.callapp;
 
import android.Manifest;
import android.app.Activity;
import android.support.v7.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
 
public class MainActivity extends AppCompatActivity {
 
    private Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        button = (Button) findViewById(R.id.button);
 
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
 
                /**
                 * 사용자의 OS Version이 마시멜로우 이상인지 체크한다.
                 */
                if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){ // 현재 버전 == 마시멜로우(M) 버전보다 높은지 확인
                    /**
                     * 사용자 단말기의 권한 중 "전화걸기" 권한이 허용되어 있는지 체크한다.
                     */
                    int permissionResult = checkSelfPermission(Manifest.permission.CALL_PHONE);
                    // Manifest 와 Permission 은 Android 로 Import 한다.
 
                    // CALL_PHONE 의 권한이 없을때
                    if ( permissionResult == PackageManager.PERMISSION_DENIED ){ // 현재 App 에서 권한에 대해서 DENIED 되어 있는지 알아보기
                        /**
                         * 사용자가 CALL_PHONE 권한을 한번이라도 "거부" 한 적이 있는지 조사한다.
                         * 거부한 적이 한번이라도 있다면, true 를 리턴한다.
                         * 거부한 이력이 없다면, False 를 리턴한다.
                         */
                        if( shouldShowRequestPermissionRationale(Manifest.permission.CALL_PHONE) ){
                            AlertDialog.Builder dialog = new AlertDialog.Builder(MainActivity.this);
                            dialog.setTitle("권한이 필요합니다.")
                                    .setMessage("이 기능을 사용하기 위해서는 단말기의 \"전화걸기\" 권한이 필요합니다. 계속하시겠습니까?")
                                    .setPositiveButton("네", new DialogInterface.OnClickListener() {
                                        @Override
                                        public void onClick(DialogInterface dialog, int which) {
                                            if( Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ) {
                                                requestPermissions(new String[]{Manifest.permission.CALL_PHONE}, 1000);
                                            }
                                        }
                                    })
                                    .setNegativeButton("아니요", new DialogInterface.OnClickListener() {
                                        @Override
                                        public void onClick(DialogInterface dialog, int which) {
                                            Toast.makeText(MainActivity.this,"기능을 취소했습니다.", Toast.LENGTH_SHORT).show();
 
                                        }
                                    }).create().show();
                        }
                        // 최초로 권한을 요청 할 때
                        else{
                            // CALL_PHONE 권한을 Android OS 에 요청한다.
                            requestPermissions(new String[]{Manifest.permission.CALL_PHONE}, 1000);
                        }
                    }
                    // CALL_PHONE 의 권한이 있을때
                   else{
                        Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:010-1111-2222"));
                        startActivity(intent);
                    }
                }
                else { // 사용자의 OS Version이 마시멜로우 이하일때
                    Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:010-1111-2222"));
                    startActivity(intent);
                }
            }
        });
    }
 
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
 
        if ( requestCode == 1000 ) {
            // 요청한 권한을 사용자가 "허용" 했다면...
            if( grantResults.length > 0 && grantResults[0]  == PackageManager.PERMISSION_GRANTED){
                Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:010-6479-3612"));
                if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
                    startActivity(intent);
                }
            }
            else{
                Toast.makeText(MainActivity.this, "권한요청을 거부했습니다." , Toast.LENGTH_SHORT).show();
            }
        }
    }
}
 
cs



클래스 따로 생성해보기


권한 요청에 대한 클래스를 따로 생성하여 PermissionRequester.java를 만든다.



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package com.ktds.jmj.callapp;
 
import android.app.Activity;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.os.Build;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
/**
 * Created by 206-020 on 2016-06-13.
 */
public class PermissionRequester {
 
        /**
         * 요청 AndroidOS의 버젼이 마쉬멜로우 이상 버젼이 아닐 경우
         */
        public static final int NOT_SUPPORT_VERSION = 2;
 
        /**
         * 요청 권한을 이미 가지고 있을 경우
         */
        public static final int ALREADY_GRANTED = -1;
 
        /**
         * 권한을 System에게 요청한 경우
         * Activity의 onRequestPermissionsResult() 로 결과 리턴됨.
         */
        public static final int REQUEST_PERMISSION = 0;
 
        private Activity context;
        private Builder builder;
 
        private void setBuilder(Builder builder) {
            this.builder = builder;
        }
 
        private PermissionRequester(Activity context) {
            this.context = context;
        }
 
        public int request(final String permission, final int requestCode, final OnClickDenyButtonListener denyAction) {
 
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            /*
             * 해당 App이 특정 권한을 가지고 있는지 검사함.
             * 리턴결과는 PackageManager.PERMISSION_DENIED 와 PackageManager.PERMISSION_GRANTED로 나눠짐.
             * PackageManager.PERMISSION_DENIED : 권한이 없음
               * PackageManager.PERMISSION_GRANTED : 권한이 있음.
             */
                int permissionCheck = ContextCompat.checkSelfPermission(context, permission);
 
            /*
             * 해당 권한이 없을 경우 처리 방법
              */
                if (permissionCheck == PackageManager.PERMISSION_DENIED) {
 
                /*
                 * 권한을 취득할 때 사용자로부터 확인을 받아야 하는지 확인
                    * 여기서 True가 나올 경우는 해당 앱에서 한번이라도 권한을 Deny한 경우일 때 말고는 없음.
                 * 권한에 대해서 허가하지 않은 경우 다시 한번 권한의 취득을 위해 사용자에게 이유를 고지해야 함.
                 * Mashmellow 버젼 이상부터 사용가능함.
                 */
                    if (context.shouldShowRequestPermissionRationale(permission)) {
 
                    /*
                     * 권한 취득해야 하는 이유를 Dialog 등을 통해서 알린다.
                     */
                        AlertDialog.Builder dialog = new AlertDialog.Builder(context);
                        dialog.setTitle(builder.getTitle())
                                .setMessage(builder.getMessage())
                                .setPositiveButton(builder.getPositiveButtonName(), new DialogInterface.OnClickListener() {
                                    @Override
                                    public void onClick(DialogInterface dialog, int which) {
                                    /*
                                     * 권한의 취득을 요청한다.
                                     * 취득하고자 하는 권한을 배열에 넣고 요청한다.
                                     * 뒤에 들어가는 파라미터(requestCode)는 onRequestPermissionsResult() 에서 권한 취득 결과에서 사용된다.
                                     * startActiviryForResult의 Request Code와 유사함.
                                     */
                                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                                            context.requestPermissions(new String[]{permission}, requestCode);
                                        }
                                    }
                                })
                                .setNegativeButton(builder.getNegativeButtonName(), new DialogInterface.OnClickListener() {
                                    @Override
                                    public void onClick(DialogInterface dialog, int which) {
                                        denyAction.onClick(context);
                                    }
                                }).create().show();
 
                        return REQUEST_PERMISSION;
                    } else {
                    /*
                     * 권한의 취득 요청을 처음 할 때
                        * 권한의 취득을 요청한다.
                     * 취득하고자 하는 권한을 배열에 넣고 요청한다.
                     * 뒤에 들어가는 파라미터(1000)는 onRequestPermissionsResult() 에서 권한 취득 결과에서 사용된다.
                     * startActiviryForResult의 Request Code와 유사함.
                     */
                        context.requestPermissions(new String[]{permission}, requestCode);
                        return REQUEST_PERMISSION;
                    }
 
                } else {
                /*
                 * 이미 권한을 가지고 있을 경우
                    * 해야할 일을 수행한다.
                 */
                    return ALREADY_GRANTED;
                }
 
            }
 
            return NOT_SUPPORT_VERSION;
        }
 
        public static class Builder {
 
            private PermissionRequester requester;
 
            public Builder(Activity context) {
                requester = new PermissionRequester(context);
            }
 
            private String title = "권한 요청";
            private String message = "기능의 사용을 위해 권한이 필요합니다.";
            private String positiveButtonName = "네";
            private String negativeButtonName = "아니요";
 
            public String getTitle() {
                return title;
            }
 
            public Builder setTitle(String title) {
                this.title = title;
                return this;
            }
 
            public String getMessage() {
                return message;
            }
 
            public Builder setMessage(String message) {
                this.message = message;
                return this;
            }
 
            public String getPositiveButtonName() {
                return positiveButtonName;
            }
 
            public Builder setPositiveButtonName(String positiveButtonName) {
                this.positiveButtonName = positiveButtonName;
                return this;
            }
 
            public String getNegativeButtonName() {
                return negativeButtonName;
            }
 
            public Builder setNegativeButtonName(String negativeButtonName) {
                this.negativeButtonName = negativeButtonName;
                return this;
            }
 
            public PermissionRequester create() {
                this.requester.setBuilder(this);
                return this.requester;
            }
 
        }
 
        public interface OnClickDenyButtonListener {
 
            public void onClick(Activity activity);
 
        }
 
}
 
cs




PermissionRequester 를 이용하여 MainActivity에서 권한 요청을 한다.



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package com.ktds.jmj.callapp;
 
import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
 
public class MainActivity extends AppCompatActivity {
 
    private Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        button = (Button) findViewById(R.id.button);
 
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
 
                int result = new PermissionRequester.Builder(MainActivity.this)
                        .create()
                        .request(Manifest.permission.CALL_PHONE, 1000 , new PermissionRequester.OnClickDenyButtonListener() {
                            @Override
                            public void onClick(Activity activity) {
                                Log.d("RESULT", "취소함.");
                            }
                        });
 
                if (result == PermissionRequester.ALREADY_GRANTED) {
                    Log.d("RESULT", "권한이 이미 존재함.");
                    if (ActivityCompat.checkSelfPermission(MainActivity.this,
                            Manifest.permission.CALL_PHONE) == PackageManager.PERMISSION_GRANTED) {
                        Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:010-6479-3612"));
                        startActivity(intent);
                    }
                }
                else if(result == PermissionRequester.NOT_SUPPORT_VERSION)
                    Log.d("RESULT", "마쉬멜로우 이상 버젼 아님.");
                else if(result == PermissionRequester.REQUEST_PERMISSION)
                    Log.d("RESULT", "요청함. 응답을 기다림.");
 
            }
        });
    }
 
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
 
        if ( requestCode == 1000 ) {
            // 요청한 권한을 사용자가 "허용" 했다면...
            if( grantResults.length > 0 && grantResults[0]  == PackageManager.PERMISSION_GRANTED){
                Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:010-6479-3612"));
                if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
                    startActivity(intent);
                }
            }
            else{
                Toast.makeText(MainActivity.this, "권한요청을 거부했습니다." , Toast.LENGTH_SHORT).show();
            }
        }
    }
}
 
cs




전화 걸리는 화면



이미 권한이 존재 한다면 로그가 찍힌다.






저작자표시

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