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Android PermissionUtils:运行时权限工具类

Android PermissionUtils:运行时权限工具类

作者: ifadai | 来源:发表于2017-06-16 16:22 被阅读0次

    PermissionUtil

    经常写Android运行时权限申请代码,每次都是复制过来之后,改一下权限字符串就用,把代码搞得乱糟糟的,于是便有了封装工具类的想法,话不多说,先看怎么用:

    工具类及Demo:github

    简洁版申请权限

    申请一个权限:

        PermissionUtils.checkAndRequestPermission(mContext, PERMISSION_CAMERA, REQUEST_CODE_CAMERA,
                    new PermissionUtils.PermissionRequestSuccessCallBack() {
                @Override
                public void onHasPermission() {
                    // 权限已被授予
                    toCamera();
                }
            });
    

    然后在onRequestPermissionsResult中:

    if(PermissionUtils.isPermissionRequestSuccess(grantResults))
                    {
                        // 权限申请成功
                        toCamera();
                    }
    

    什么?要同时申请多个权限?

        PermissionUtils.checkAndRequestMorePermissions(mContext, PERMISSIONS, REQUEST_CODE_PERMISSIONS,
                    new PermissionUtils.PermissionRequestSuccessCallBack() {
                @Override
                public void onHasPermission() {
                    // 权限已被授予
                    toCamera();
                }
            });
    

    当然上面这些都不是申请权限的正确姿势,理想的姿势应该是:

    • 第一次申请权限:按照正常流程走;
    • 如果用户第一次拒绝了权限申请,第二次申请时应向用户解释权限用途;
    • 如果用户勾选了“不再询问”选项,应引导用户去设置页手动开启权限。

    如图:

    第一次申请权限 第二次申请权限并禁止询问

    于是,引申出了复杂版的权限申请方法:

    自定义权限申请:

    PermissionUtils.checkPermission(mContext, PERMISSION_CAMERA,
                    new PermissionUtils.PermissionCheckCallBack() {
                @Override
                public void onHasPermission() {
                    // 已授予权限
                    toCamera();
                }
    
                @Override
                public void onUserHasAlreadyTurnedDown(String... permission) {
                    // 上一次申请权限被拒绝,可用于向用户说明权限原因,然后调用权限申请方法。
                }
    
                @Override
                public void onUserHasAlreadyTurnedDownAndDontAsk(String... permission) {
                    // 第一次申请权限或被禁止申请权限,建议直接调用申请权限方法。
                }
            });
    

    然后在onRequestPermissionsResult中:

    PermissionUtils.onRequestPermissionResult(mContext, PERMISSION_CAMERA, grantResults, new PermissionUtils.PermissionCheckCallBack() {
                        @Override
                        public void onHasPermission() {
                            toCamera();
                        }
    
                        @Override
                        public void onUserHasAlreadyTurnedDown(String... permission) {
                            Toast.makeText(mContext, "我们需要"+Arrays.toString(permission)+"权限", Toast.LENGTH_SHORT).show();
                        }
    
                        @Override
                        public void onUserHasAlreadyTurnedDownAndDontAsk(String... permission) {
                            Toast.makeText(mContext, "我们需要"+Arrays.toString(permission)+"权限", Toast.LENGTH_SHORT).show();
                            // 显示前往设置页的dialog
                            showToAppSettingDialog();
                        }
                    });
    

    基本使用就是这些了,包括前往应用设置页的方法,也在工具类里面,具体使用可以看demo。

    工具类及Demo:github

    贴一下工具类代码:

    package com.fadai.library;
    
    import android.app.Activity;
    import android.content.Context;
    import android.content.Intent;
    import android.content.pm.PackageManager;
    import android.net.Uri;
    import android.os.Build;
    import android.support.v4.app.ActivityCompat;
    import android.support.v4.content.ContextCompat;
    
    import java.util.ArrayList;
    import java.util.List;
    
    /**
     * <pre>
     *     author : FaDai
     *     e-mail : i_fadai@163.com
     *     time   : 2017/06/13
     *     desc   : xxxx描述
     *     version: 1.0
     * </pre>
     */
    
    public class PermissionUtils {
    
        /**
         * 检测权限
         *
         * @return true:已授权; false:未授权;
         */
        public static boolean checkPermission(Context context, String permission) {
            if (ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED)
                return true;
            else
                return false;
        }
    
        /**
         * 检测多个权限
         *
         * @return 未授权的权限
         */
        public static List<String> checkMorePermissions(Context context, String[] permissions) {
            List<String> permissionList = new ArrayList<>();
            for (int i = 0; i < permissions.length; i++) {
                if (!checkPermission(context, permissions[i]))
                    permissionList.add(permissions[i]);
            }
            return permissionList;
        }
    
        /**
         * 请求权限
         */
        public static void requestPermission(Context context, String permission, int requestCode) {
            ActivityCompat.requestPermissions((Activity) context, new String[]{permission}, requestCode);
        }
    
        /**
         * 请求多个权限
         */
        public static void requestMorePermissions(Context context, List permissionList, int requestCode) {
            String[] permissions = (String[]) permissionList.toArray(new String[permissionList.size()]);
            requestMorePermissions(context, permissions, requestCode);
        }
    
        /**
         * 请求多个权限
         */
        public static void requestMorePermissions(Context context, String[] permissions, int requestCode) {
            ActivityCompat.requestPermissions((Activity) context, permissions, requestCode);
        }
    
        /**
         * 判断是否已拒绝过权限
         *
         * @return
         * @describe :如果应用之前请求过此权限但用户拒绝,此方法将返回 true;
         * -----------如果应用第一次请求权限或 用户在过去拒绝了权限请求,
         * -----------并在权限请求系统对话框中选择了 Don't ask again 选项,此方法将返回 false。
         */
        public static boolean judgePermission(Context context, String permission) {
            if (ActivityCompat.shouldShowRequestPermissionRationale((Activity) context, permission))
                return true;
            else
                return false;
        }
    
        /**
         * 检测权限并请求权限:如果没有权限,则请求权限
         */
        public static void checkAndRequestPermission(Context context, String permission, int requestCode) {
            if (!checkPermission(context, permission)) {
                requestPermission(context, permission, requestCode);
            }
        }
    
        /**
         * 检测并请求多个权限
         */
        public static void checkAndRequestMorePermissions(Context context, String[] permissions, int requestCode) {
            List<String> permissionList = checkMorePermissions(context, permissions);
            requestMorePermissions(context, permissionList, requestCode);
        }
    
    
        /**
         * 检测权限
         *
         * @describe:具体实现由回调接口决定
         */
        public static void checkPermission(Context context, String permission, PermissionCheckCallBack callBack) {
            if (checkPermission(context, permission)) { // 用户已授予权限
                callBack.onHasPermission();
            } else {
                if (judgePermission(context, permission))  // 用户之前已拒绝过权限申请
                    callBack.onUserHasAlreadyTurnedDown(permission);
                else                                       // 用户之前已拒绝并勾选了不在询问、用户第一次申请权限。
                    callBack.onUserHasAlreadyTurnedDownAndDontAsk(permission);
            }
        }
    
        /**
         * 检测多个权限
         *
         * @describe:具体实现由回调接口决定
         */
        public static void checkMorePermissions(Context context, String[] permissions, PermissionCheckCallBack callBack) {
            List<String> permissionList = checkMorePermissions(context, permissions);
            if (permissionList.size() == 0) {  // 用户已授予权限
                callBack.onHasPermission();
            } else {
                boolean isFirst = true;
                for (int i = 0; i < permissionList.size(); i++) {
                    String permission = permissionList.get(i);
                    if (judgePermission(context, permission)) {
                        isFirst = false;
                        break;
                    }
                }
                String[] unauthorizedMorePermissions = (String[]) permissionList.toArray(new String[permissionList.size()]);
                if (isFirst)// 用户之前已拒绝过权限申请
                    callBack.onUserHasAlreadyTurnedDownAndDontAsk(unauthorizedMorePermissions);
                else       // 用户之前已拒绝并勾选了不在询问、用户第一次申请权限。
                    callBack.onUserHasAlreadyTurnedDown(unauthorizedMorePermissions);
    
            }
        }
    
    
        /**
         * 检测并申请权限
         */
        public static void checkAndRequestPermission(Context context, String permission, int requestCode, PermissionRequestSuccessCallBack callBack) {
            if (checkPermission(context, permission)) {// 用户已授予权限
                callBack.onHasPermission();
            } else {
                requestPermission(context, permission, requestCode);
            }
        }
    
        /**
         * 检测并申请多个权限
         */
        public static void checkAndRequestMorePermissions(Context context, String[] permissions, int requestCode, PermissionRequestSuccessCallBack callBack) {
            List<String> permissionList = checkMorePermissions(context, permissions);
            if (permissionList.size() == 0) {  // 用户已授予权限
                callBack.onHasPermission();
            } else {
                requestMorePermissions(context, permissionList, requestCode);
            }
        }
    
        /**
         * 判断权限是否申请成功
         */
        public static boolean isPermissionRequestSuccess(int[] grantResults) {
            if (grantResults.length > 0
                    && grantResults[0] == PackageManager.PERMISSION_GRANTED)
                return true;
            else
                return false;
        }
    
        /**
         * 用户申请权限返回
         */
        public static void onRequestPermissionResult(Context context, String permission, int[] grantResults, PermissionCheckCallBack callback) {
            if (PermissionUtils.isPermissionRequestSuccess(grantResults)) {
                callback.onHasPermission();
            } else {
                if (PermissionUtils.judgePermission(context, permission)) {
                    callback.onUserHasAlreadyTurnedDown(permission);
                } else {
                    callback.onUserHasAlreadyTurnedDownAndDontAsk(permission);
                }
            }
        }
    
        /**
         * 用户申请多个权限返回
         */
        public static void onRequestMorePermissionsResult(Context context, String[] permissions, PermissionCheckCallBack callback) {
            boolean isBannedPermission = false;
            List<String> permissionList = checkMorePermissions(context, permissions);
            if (permissionList.size() == 0)
                callback.onHasPermission();
            else {
                for (int i = 0; i < permissionList.size(); i++) {
                    if (!judgePermission(context, permissionList.get(i))) {
                        isBannedPermission = true;
                        break;
                    }
                }
                // 已禁止再次询问权限
                if (isBannedPermission)
                    callback.onUserHasAlreadyTurnedDownAndDontAsk(permissions);
                else // 拒绝权限
                    callback.onUserHasAlreadyTurnedDown(permissions);
            }
    
        }
    
    
        /**
         * 跳转到权限设置界面
         */
        public static void toAppSetting(Context context) {
            Intent intent = new Intent();
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            if (Build.VERSION.SDK_INT >= 9) {
                intent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
                intent.setData(Uri.fromParts("package", context.getPackageName(), null));
            } else if (Build.VERSION.SDK_INT <= 8) {
                intent.setAction(Intent.ACTION_VIEW);
                intent.setClassName("com.android.settings", "com.android.settings.InstalledAppDetails");
                intent.putExtra("com.android.settings.ApplicationPkgName", context.getPackageName());
            }
            context.startActivity(intent);
        }
    
        public interface PermissionRequestSuccessCallBack {
            /**
             * 用户已授予权限
             */
            void onHasPermission();
        }
    
    
        public interface PermissionCheckCallBack {
    
            /**
             * 用户已授予权限
             */
            void onHasPermission();
    
            /**
             * 用户已拒绝过权限
             *
             * @param permission:被拒绝的权限
             */
            void onUserHasAlreadyTurnedDown(String... permission);
    
            /**
             * 用户已拒绝过并且已勾选不再询问选项、用户第一次申请权限;
             *
             * @param permission:被拒绝的权限
             */
            void onUserHasAlreadyTurnedDownAndDontAsk(String... permission);
        }
    
    
    }
    
    

    工具类及Demo:github

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