我也遇到过同样的问题，但我解决了。为了简化工作，我编写了一个util类来处理运行时权限。

public class PermissionUtil {
    /*
    * Check if version is marshmallow and above.
    * Used in deciding to ask runtime permission
    * */
    public static boolean shouldAskPermission() {
        return (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M);
    }
private static boolean shouldAskPermission(Context context, String permission){
        if (shouldAskPermission()) {
            int permissionResult = ActivityCompat.checkSelfPermission(context, permission);
            if (permissionResult != PackageManager.PERMISSION_GRANTED) {
                return true;
            }
        }
        return false;
    }
public static void checkPermission(Context context, String permission, PermissionAskListener listener){
/*
        * If permission is not granted
        * */
        if (shouldAskPermission(context, permission)){
/*
            * If permission denied previously
            * */
            if (((Activity) context).shouldShowRequestPermissionRationale(permission)) {
                listener.onPermissionPreviouslyDenied();
            } else {
                /*
                * Permission denied or first time requested
                * */
if (PreferencesUtil.isFirstTimeAskingPermission(context, permission)) {
                    PreferencesUtil.firstTimeAskingPermission(context, permission, false);
                    listener.onPermissionAsk();
                } else {
                    /*
                    * Handle the feature without permission or ask user to manually allow permission
                    * */
                    listener.onPermissionDisabled();
                }
            }
        } else {
            listener.onPermissionGranted();
        }
    }
/*
    * Callback on various cases on checking permission
    *
    * 1.  Below M, runtime permission not needed. In that case onPermissionGranted() would be called.
    *     If permission is already granted, onPermissionGranted() would be called.
    *
    * 2.  Above M, if the permission is being asked first time onPermissionAsk() would be called.
    *
    * 3.  Above M, if the permission is previously asked but not granted, onPermissionPreviouslyDenied()
    *     would be called.
    *
    * 4.  Above M, if the permission is disabled by device policy or the user checked "Never ask again"
    *     check box on previous request permission, onPermissionDisabled() would be called.
    * */
    public interface PermissionAskListener {
/*
        * Callback to ask permission
        * */
        void onPermissionAsk();
/*
        * Callback on permission denied
        * */
        void onPermissionPreviouslyDenied();
/*
        * Callback on permission "Never show again" checked and denied
        * */
        void onPermissionDisabled();
/*
        * Callback on permission granted
        * */
        void onPermissionGranted();
    }
}

PreferenceUtil方法如下。

public static void firstTimeAskingPermission(Context context, String permission, boolean isFirstTime){
SharedPreferences sharedPreference = context.getSharedPreferences(PREFS_FILE_NAME, MODE_PRIVATE;
 sharedPreference.edit().putBoolean(permission, isFirstTime).apply();
 }
public static boolean isFirstTimeAskingPermission(Context context, String permission){
return context.getSharedPreferences(PREFS_FILE_NAME, MODE_PRIVATE).getBoolean(permission, true);
}

现在，您所需要的就是使用checkPermission方法和适当的参数。

举个例子，

PermissionUtil.checkPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE,
                    new PermissionUtil.PermissionAskListener() {
                        @Override
                        public void onPermissionAsk() {
                            ActivityCompat.requestPermissions(
                                    thisActivity,
              new String[]{Manifest.permission.READ_CONTACTS},
                            REQUEST_EXTERNAL_STORAGE
                            );
                        }
@Override
                        public void onPermissionPreviouslyDenied() {
                       //show a dialog explaining permission and then request permission
                        }
@Override
                        public void onPermissionDisabled() {
Toast.makeText(context, "Permission Disabled.", Toast.LENGTH_SHORT).show();
                        }
@Override
                        public void onPermissionGranted() {
                            readContacts();
                        }
                    });

Case 1: The app doesn't have a permission and the user has not been asked for the permission before. In this case, shouldShowRequestPermissionRationale() will return false because this is the first time we're asking the user. Case 2: The user has denied the permission and selected "Don't ask again", in this case too shouldShowRequestPermissionRationale() will return false. I would want to send the user to the App's settings page in Case 2. How do i go about differentiating these two cases?

你会得到回调onPermissionAsk的情况1，和onPermissionDisabled的情况2。

快乐编码:)

“M Preview 1”后，如果第一次弹出对话框，则没有“Never ask again”复选框。

如果用户拒绝权限请求，第二次请求权限时，权限对话框中会出现“Never ask again”复选框。

所以逻辑应该是这样的:

Request permission: if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(context, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_CODE); } else { //Do the stuff that requires permission... } Check if the permission was denied or granted in onRequestPermissionsResult. If the permission was denied previously, this time there will be a Never ask again checkbox in the permission dialog. Call shouldShowRequestPermissionRationale to see if the user checked Never ask again. shouldShowRequestPermissionRationale method returns false only if the user selected Never ask again or device policy prohibits the app from having that permission: if (grantResults.length > 0){ if(grantResults[0] == PackageManager.PERMISSION_GRANTED) { //Do the stuff that requires permission... }else if (grantResults[0] == PackageManager.PERMISSION_DENIED){ // Should we show an explanation? if (ActivityCompat.shouldShowRequestPermissionRationale(context, Manifest.permission.WRITE_EXTERNAL_STORAGE)) { //Show permission explanation dialog... }else{ //Never ask again selected, or device policy prohibits the app from having that permission. //So, disable that feature, or fall back to another situation... } } }

因此，如果用户勾选了“永不再问”，您将不必跟踪。

可能对某人有用:——

我注意到的是，如果我们在onRequestPermissionsResult()回调方法中检查shouldshowrequestpermissionration理()标志，它只显示两种状态。

状态1:-返回true:——任何时候用户单击Deny permissions(包括第一次)。

状态2:-返回false:-如果用户选择“永不再问”。

链接到详细的工作示例。

正确使用shouldShowRequestPermissionRationale是on onRequestPermissionsResult。

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
    <androidx.appcompat.widget.LinearLayoutCompat
        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"
        android:orientation="vertical"
        tools:context=".MainActivity"
        android:gravity="center">
    
        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_camera"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Camera"
            android:textAllCaps="false"
            android:background="@color/purple_200"
            android:layout_marginTop="20dp"
            >
        </androidx.appcompat.widget.AppCompatButton>
        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_storage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Storage"
            android:textAllCaps="false"
            android:background="@color/purple_200"
            android:layout_marginTop="30dp"
            >
        </androidx.appcompat.widget.AppCompatButton>
    
    </androidx.appcompat.widget.LinearLayoutCompat>
enter code here

MainActivity.kt

package com.example.myapplication
import android.Manifest
import android.content.pm.PackageManager
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import android.widget.Button
import android.widget.Toast
import androidx.appcompat.app.AlertDialog
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
class MainActivity : AppCompatActivity() {
    private val TAG = "MainActivity"
    lateinit var btnCamera: Button
    private val cameraRequestCode = 100
    lateinit var btnStorage: Button
    private val storageRequestCode = 200
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        btnCamera = findViewById(R.id.btn_camera)
        btnStorage = findViewById(R.id.btn_storage)
        btnCamera.setOnClickListener {
            checkPermission(android.Manifest.permission.CAMERA, cameraRequestCode)
        }
        btnStorage.setOnClickListener {
            checkPermission(android.Manifest.permission.READ_EXTERNAL_STORAGE, storageRequestCode)
        }
    }

    private fun checkPermission(permissionName: String, requestCode: Int) {
        /**
         * if the permission is given means it will give the  permissionNumber = 0
         * if the permission is not  given means it will give the  permissionNumber =-1
         * It s same as we are checking for PackageManager.PERMISSION_DENIED =-1 & PackageManager.GRANTED=0
         */
        val permissionNumber: Int =
            ContextCompat.checkSelfPermission(this@MainActivity, permissionName)
        if (permissionNumber == PackageManager.PERMISSION_GRANTED) {

        } else if (permissionNumber == PackageManager.PERMISSION_DENIED) {
            askpermission(permissionName, requestCode, permissionNumber)

        }

    }

    private fun askpermission(permissionName: String, permissionCode: Int, permissionNumner: Int) {
        ActivityCompat.requestPermissions(
            this@MainActivity,
            arrayOf(permissionName),
            permissionCode
        )
    }

    override fun onRequestPermissionsResult(
        requestCode: Int,
        permissions: Array<out String>,
        grantResults: IntArray
    ) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        if (requestCode == cameraRequestCode) {
            if (permissions.size > 0) {
                if (permissions[0].toString().equals(Manifest.permission.CAMERA, ignoreCase = true)) {
                    if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                        Toast.makeText(applicationContext,"Permission Granted",Toast.LENGTH_SHORT).show()

                    }else{
                        if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
                           var permissionDeniedStatus= checkDeniedPermissionStatus(permissions[0]);
                            if(permissionDeniedStatus){
                                /**
                                 * Permission Denied
                                 */
                                Toast.makeText(applicationContext,"Permission Denied",Toast.LENGTH_SHORT).show()
                            }else{
                                /**
                                 * Permission Denied and Selected Don t ask again.
                                 */
                                showDialog("Permission Denied","Permission Denied Permanently\nOpen Setting to allow")
                            }
                        }
                    }
                }
            }
        }else  if (requestCode == storageRequestCode) {
            if(permissions[0].toString().equals(Manifest.permission.READ_EXTERNAL_STORAGE, ignoreCase = true)){
                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                        Toast.makeText(applicationContext,"Permission Granted",Toast.LENGTH_SHORT).show()
                    }
                }else{
                    if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
                        var permissionDeniedStatus= checkDeniedPermissionStatus(permissions[0]);
                        if(permissionDeniedStatus){
                            /**
                             * Permission Denied
                             */
                            Toast.makeText(applicationContext,"Permission Denied",Toast.LENGTH_SHORT).show()
                        }else{
                            /**
                             * Permission Denied and Selected Don t ask again.
                             */
                            showDialog("Permission Denied","Permission Denied Permanently\nOpen Setting to allow")
                        }
                    }
                }
            }
        }
    }

    private fun checkDeniedPermissionStatus(permissionName: String) :Boolean{
        val permissionDeniedStatus: Boolean = ActivityCompat.shouldShowRequestPermissionRationale(this@MainActivity, permissionName)
        return permissionDeniedStatus
    }

    private fun showDialog(title: String, message: String) {
        val builder = AlertDialog.Builder(this)
        builder.setTitle(title)
        builder.setMessage(message)
        builder.setPositiveButton(android.R.string.yes) { dialog, which ->

        }

        builder.setNegativeButton(android.R.string.no) { dialog, which ->

        }
        builder.show()
    }
}

如果有人对Kotlin解决方案感兴趣，我将@muthuraj的答案重构为Kotlin。它也现代化了一点，有一个完成块，而不是监听器。

PermissionUtil

object PermissionUtil {
    private val PREFS_FILE_NAME = "preference"

    fun firstTimeAskingPermission(context: Context, permission: String, isFirstTime: Boolean) {
        val sharedPreference = context.getSharedPreferences(PREFS_FILE_NAME, MODE_PRIVATE)
        sharedPreference.preferences.edit().putBoolean(permission,
                isFirstTime).apply()
    }

    fun isFirstTimeAskingPermission(context: Context, permission: String): Boolean {
        val sharedPreference = context.getSharedPreferences(PREFS_FILE_NAME, MODE_PRIVATE)
        return sharedPreference.preferences.getBoolean(permission,
                true)
    }
}

PermissionHandler

enum class CheckPermissionResult {
    PermissionAsk,
    PermissionPreviouslyDenied,
    PermissionDisabled,
    PermissionGranted
}

typealias PermissionCheckCompletion = (CheckPermissionResult) -> Unit


object PermissionHandler {

    private fun shouldAskPermission(context: Context, permission: String): Boolean {
        return ContextCompat.checkSelfPermission(context,
                permission) != PackageManager.PERMISSION_GRANTED
    }

    fun checkPermission(context: Context, permission: String, completion: PermissionCheckCompletion) {
        // If permission is not granted
        if (shouldAskPermission(context, permission)) {
            //If permission denied previously
            if ((context as Activity).shouldShowRequestPermissionRationale(permission)) {
                completion(CheckPermissionResult.PermissionPreviouslyDenied)
            } else {
                // Permission denied or first time requested
                if (PermissionUtil.isFirstTimeAskingPermission(context,
                                permission)) {
                    PermissionUtil.firstTimeAskingPermission(context,
                            permission,
                            false)
                    completion(CheckPermissionResult.PermissionAsk)
                } else {
                    // Handle the feature without permission or ask user to manually allow permission
                    completion(CheckPermissionResult.PermissionDisabled)
                }
            }
        } else {
            completion(CheckPermissionResult.PermissionGranted)
        }
    }
}

实现

PermissionHandler.checkPermission(activity,
                    Manifest.permission.CAMERA) { result ->
                when (result) {
                    CheckPermissionResult.PermissionGranted -> {
                        // openCamera()
                    }
                    CheckPermissionResult.PermissionDisabled -> {
                        // displayAlert(noPermissionAlert)
                    }
                    CheckPermissionResult.PermissionAsk -> {
                        // requestCameraPermissions()
                    }
                    CheckPermissionResult.PermissionPreviouslyDenied -> {
                        // displayAlert(permissionRequestAlert)
                    }
                }
            }

我们可以这样做吗?

@Retention(RetentionPolicy.SOURCE)
@IntDef({GRANTED, DENIED, NEVER})
public @interface PermissionStatus {
}

public static final int GRANTED = 0;
public static final int DENIED = 1;
public static final int NEVER = 2;

@PermissionStatus
public static int getPermissionStatus(Activity activity, String permission) {
    if (ActivityCompat.shouldShowRequestPermissionRationale(activity, permission)) {
        return DENIED;
    } else {
        if (ActivityCompat.checkSelfPermission(activity, permission) == PackageManager.PERMISSION_GRANTED) {
            return GRANTED;
        } else {
            return NEVER;
        }
    }
}