如何处理被拒绝的权限 Android M (EasyPermissions)

Question

我正在使用 EasyPermissions 检查我的 android 中是否已授予某些权限，如果没有则请求它们。很酷的库，效果很好，但是如果某些权限被拒绝，我仍然没有弄清楚如何处理。

所以基本上你在创建时运行这样的代码来检查

if (EasyPermissions.hasPermissions(Splash.this, perms )) {

        TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
        String IMEI = telephonyManager.getDeviceId();
        String SimSimSerial = telephonyManager.getSimSerialNumber();

        Toast.makeText(Splash.this, "IMEI: " + IMEI + " SimSerial: " + SimSimSerial, Toast.LENGTH_SHORT).show();


    } else {

        EasyPermissions.requestPermissions(Splash.this, "Without these permissions, the app is unable to successfully complete authentication. Please allow us to access your device so that we can better serve you. "  ,PERMS_REQUEST_CODE, perms );
    }

代码分解：如果存在权限，则继续其他请求，这很好。我的问题是，如果在请求期间有人单击从不询问按钮怎么办。 EasyPermissions 的人为此提供了一个功能

EasyPermissions.somePermissionPermanentlyDenied(Splash.this, permsList)

我的困境是在哪里调用此函数，因为请求权限方法不返回任何内容（无效）。我尝试了类似的东西

if (EasyPermissions.hasPermissions(Splash.this, perms )) {...
 } else if (EasyPermissions.somePermissionPermanentlyDenied(Splash.this, permsList)) {

 } else {
    EasyPermissions.requestPermissions(Splash.this, "Without these permissions, the app is unable to successfully complete authentication. Please allow us to access your device so that we can better serve you. "  ,PERMS_REQUEST_CODE, perms );
 }

但它总是在启动时运行被拒绝的权限，而不是当用户在运行时实际单击从不按钮时。任何帮助表示感谢..

链接到 EasyPermissions https://github.com/googlesamples/easypermissions

Answer 1

检查这个link。

在这里您必须实现 EasyPermissions.PermissionCallbacks，您将被提供添加方法，这些方法将是 onRequestPermissionsResult、onPermissionsGranted、onPermissionsDenied。然后在 onPermissionsDenied 你可以处理你的拒绝状态。 试试看，让我知道它是否对你有用。

Answer 2

如果您不想使用 Easy Permissions，请对每种权限情况进行完整说明

/**
 *    Case 1: User doesn't have permission
 *    Case 2: User has permission
 *
 *    Case 3: User has never seen the permission Dialog
 *    Case 4: User has denied permission once but he din't clicked on "Never Show again" check box
 *    Case 5: User denied the permission and also clicked on the "Never Show again" check box.
 *    Case 6: User has allowed the permission
 *
 */
public void handlePermission() {
    if (ContextCompat.checkSelfPermission(MainActivity.this,
            Manifest.permission.WRITE_EXTERNAL_STORAGE)
            != PackageManager.PERMISSION_GRANTED) {
        // This is Case 1. Now we need to check further if permission was shown before or not

        if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
                Manifest.permission.WRITE_EXTERNAL_STORAGE)) {

            // This is Case 4.
        } else {
            // This is Case 3. Request for permission here
        }

    } else {
        // This is Case 2. You have permission now you can do anything related to it
    }
}

public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

    if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
        // This is Case 2 (Permission is now granted)
    } else {
        // This is Case 1 again as Permission is not granted by user

        //Now further we check if used denied permanently or not
        if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
                Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
            // case 4 User has denied permission but not permanently

        } else {
            // case 5. Permission denied permanently.
            // You can open Permission setting's page from here now.
        }

    }
}