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用户权限检查仅在安装后第一次起作用

user-permissions permissions kotlin android

Mārtiņš Ciekurs · 技术社区 · 7 年前

我的应用程序仅在安装应用程序后第一次显示权限对话框。如果我关闭它并再次打开,它不会显示请求窗口。即使我在clickEvent上手动禁用位置权限或请求权限窗口,它也不起作用。

检查权限:

private fun checkPermission(){
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
            != PackageManager.PERMISSION_GRANTED) {
        //permission not granted

        if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                        Manifest.permission.ACCESS_COARSE_LOCATION)) {
            //show an explanation to the user
        } else {
            //request the permission
            ActivityCompat.requestPermissions(this,
                    arrayOf(Manifest.permission.ACCESS_COARSE_LOCATION),
                    ACCESS_COARSE_LOCATION_CODE)
        }
    } else {
        ActivityCompat.requestPermissions(this,
                arrayOf(Manifest.permission.ACCESS_COARSE_LOCATION),
                ACCESS_COARSE_LOCATION_CODE)
    }
}

onrequestpermissions结果:

override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
    when(requestCode){
        ACCESS_COARSE_LOCATION_CODE -> {
            if ((grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
                //granted
            } else {
                //denied
            }
            return
        }
    }
}

我打电话给 checkPermission 功能开启 onStart 当我点击图标。

3 回复 | 直到 7 年前

Manohar 7 年前

你离开了 shouldShowRequestPermissionRationale 部分为空,因此它不会再次请求权限。其中显示一个警告对话框,说明为什么需要权限,以及用户单击“确定”时再次请求权限。作为替补,你可以直接再次请求许可。

private fun checkPermission(){
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
            != PackageManager.PERMISSION_GRANTED) {
        //permission not granted

        if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                        Manifest.permission.ACCESS_COARSE_LOCATION)) {
             ActivityCompat.requestPermissions(this,
                arrayOf(Manifest.permission.ACCESS_COARSE_LOCATION),
                ACCESS_COARSE_LOCATION_CODE)
        } else {
            //request the permission
            ActivityCompat.requestPermissions(this,
                    arrayOf(Manifest.permission.ACCESS_COARSE_LOCATION),
                    ACCESS_COARSE_LOCATION_CODE)
        }
    } else {
        ActivityCompat.requestPermissions(this,
                arrayOf(Manifest.permission.ACCESS_COARSE_LOCATION),
                ACCESS_COARSE_LOCATION_CODE)
    }
}

你没有正确处理拒绝和不再询问案件,我建议你使用 this 简单的图书馆。你会在一个地方接到所有的回电

  Permissions.check(this, Manifest.permission.ACCESS_COARSE_LOCATION, null, new PermissionHandler() {
    @Override
    public void onGranted() {
        // do your task.
    }
});

Umesh Maharjan 7 年前

    private fun checkAndRequestPermissions(): Boolean {

    val permissionContact = ContextCompat.checkSelfPermission(activity,
            Manifest.permission.READ_CONTACTS)

    val permissionPhoneState = ContextCompat.checkSelfPermission(activity,
            Manifest.permission.READ_PHONE_STATE)
    val permissionCamera = ContextCompat.checkSelfPermission(activity,
            Manifest.permission.CAMERA)
    val permissionWriteExternal = ContextCompat.checkSelfPermission(activity,
            Manifest.permission.WRITE_EXTERNAL_STORAGE)

    val locationPermission = ContextCompat.checkSelfPermission(activity, Manifest.permission.ACCESS_FINE_LOCATION)
    val listPermissionsNeeded = java.util.ArrayList<String>()
    when {
        locationPermission != PackageManager.PERMISSION_GRANTED -> listPermissionsNeeded.add(Manifest.permission.ACCESS_FINE_LOCATION)
    }

    when {
        permissionContact != PackageManager.PERMISSION_GRANTED -> listPermissionsNeeded.add(Manifest.permission.READ_CONTACTS)
    }

    when {
        permissionPhoneState != PackageManager.PERMISSION_GRANTED -> listPermissionsNeeded.add(Manifest.permission.READ_PHONE_STATE)
    }
    when {
        permissionCamera != PackageManager.PERMISSION_GRANTED -> listPermissionsNeeded.add(Manifest.permission.CAMERA)
    }
    when {
        permissionWriteExternal != PackageManager.PERMISSION_GRANTED -> listPermissionsNeeded.add(Manifest.permission.WRITE_EXTERNAL_STORAGE)
    }
    when {
        !listPermissionsNeeded.isEmpty() -> ActivityCompat.requestPermissions(activity, listPermissionsNeeded.toTypedArray(), REQUEST_ID_MULTIPLE_PERMISSIONS)
    }
    return true
}

-1

Mohammad Rbabah 7 年前

当用户接受您的权限时,它将永久接受您的权限(除非用户将其删除),只有在尚未授予该权限时,“检查权限”才会显示。当用户通过设置清除数据或取消选中权限时->应用设置->所选应用->权限。