VS 2017中新的Xamarin项目的多个“找不到资源...”和“错误接收项目的父项”

Question

我在Visual Studio 2017社区版15.8.3中为Xamarin创建了一个新项目。然后我在MainPage.xaml和cs中添加了一些更改，现在在构建解决方案时遇到了这些错误。

错误指的是我没有碰到的styles.xml。

我之前看到此错误，要求重新启动VS，重新启动计算机，清理obj和bin目录，升级VS等。

我不想盲目地做这些事情。

这个问题有系统的解决方案吗？

Answer 1

这在针对Android 7.1的VS2017跨平台解决方案中为我工作：

1. 清理您的项目并重建它。
2. 更改每个XAML文件属性： 将“生成操作”从“嵌入式资源”更改为“编译”或“ C＃编译器”
3. 重建项目（这会产生错误）
4. 关闭VS2017并删除.VS文件夹并重新打开解决方案
5. 更改每个XAML文件属性： 将“构建操作”更改回“嵌入资源”
6. 重建，对我有好处。

在一个单独的项目中，上述解决方案无法解决我的错误，并且我还成功地执行了以下其他步骤：

1. Using this guide，我能够确定自己缺少以下Nuget参考：

import pygame as pg
from pygame.math import Vector2


pg.init()
LIGHTBLUE = pg.Color('lightskyblue2')
DARKBLUE = pg.Color(11, 8, 69)

screen = pg.display.set_mode((800, 600))
width, height = screen.get_size()
clock = pg.time.Clock()
# You need surfaces with an alpha channel for the masks.
bluecar = pg.Surface((60, 30), pg.SRCALPHA)
bluecar.fill((0,0,255))
BALL = pg.Surface((30, 30), pg.SRCALPHA)
pg.draw.circle(BALL, [0,0,0], [15, 15], 15)
ball_pos = Vector2(395, 15)
ballrect = BALL.get_rect(center=ball_pos)
ball_vel = Vector2(0, 0)
mask_blue = pg.mask.from_surface(bluecar)
mask_ball = pg.mask.from_surface(BALL)
pos_blue = Vector2(740, 500)  # Just use the pos vector instead of x, y.
bluerect = bluecar.get_rect(center = pos_blue)
vel_blue = Vector2(0, 0)  # Replace x_change, y_change with vel_blue.
# A constant value that you add to the y-velocity each frame.
GRAVITY = .5
on_ground = False
ground_y = height - 100

done = False
while not done:
    for event in pg.event.get():
        if event.type == pg.QUIT:
            done = True
        elif event.type == pg.KEYDOWN:
            if event.key == pg.K_a:
                vel_blue.x = -5
            elif event.key == pg.K_d:
                vel_blue.x = 5
            elif event.key == pg.K_w:
                if on_ground:  # Only jump if the player is on_ground.
                    vel_blue.y = -12
                    on_ground = False
        elif event.type == pg.KEYUP:
            if event.key == pg.K_a and vel_blue.x < 0:
                vel_blue.x = 0
            elif event.key == pg.K_d and vel_blue.x > 0:
                vel_blue.x = 0

    ball_vel.y += GRAVITY  # Accelerate downwards.

    ball_pos += ball_vel  # Move the ball.
    ballrect.center = ball_pos  # Update the rect.
    # Bounce when the ball touches the bottom of the screen.
    if ballrect.bottom >= ground_y:
        # Just invert the y-velocity to bounce.
        ball_vel.y *= -0.7  # Change this value to adjust the elasticity.
        ball_vel.x *= .95  # Friction
        # Don't go below the ground.
        ballrect.bottom = ground_y
        ball_pos.y = ballrect.centery
    # Left and right wall collisions.
    if ballrect.left < 0:
        ball_vel.x *= -1
        ballrect.left = 0
        ball_pos.x = ballrect.centerx
    elif ballrect.right > width:
        ball_vel.x *= -1
        ballrect.right = width
        ball_pos.x = ballrect.centerx

    # Add the GRAVITY value to vel_blue.y, so that
    # the object moves faster each frame.
    vel_blue.y += GRAVITY
    pos_blue += vel_blue
    bluerect.center = pos_blue  # You have to update the rect as well.

    # Stop the object when it's near the bottom of the screen.
    if bluerect.bottom >= ground_y:
        bluerect.bottom = ground_y
        pos_blue.y = bluerect.centery
        vel_blue.y = 0
        on_ground = True
    if bluerect.x < 0:
        bluerect.x = 0
        pos_blue.x = bluerect.centerx
    elif bluerect.right > width:
        bluerect.right = width
        pos_blue.x = bluerect.centerx

    offset_blue = bluerect[0] - ballrect[0], bluerect[1] - ballrect[1]
    overlap_blue = mask_ball.overlap(mask_blue, offset_blue)
    if overlap_blue:  # Blue collides with the ball.
        if vel_blue.x != 0:  # Player is moving.
            ball_vel = Vector2(vel_blue.x, -17)
        else:  # If the player is standing, I just update the vel.y.
            ball_vel.y = -17

    # Draw everything.
    screen.fill(LIGHTBLUE)
    pg.draw.line(screen, (0, 0, 0), (0, ground_y), (width, ground_y))
    screen.blit(bluecar, bluerect)  # Blit it at the rect.
    screen.blit(BALL, ballrect)

    pg.display.update()
    clock.tick(60)

pg.quit()

1. 清理并构建后，关闭，删除.VS文件夹，然后重新打开...我再次检查了日志，能够确定我缺少以下Nuget参考：

Xamarin.Android.Support.v7.AppCompat

1. 又一次清理和构建，这些问题消失了……剩下了我能够解决的残余代码问题。

2. 经过另一次清理和构建后，我收到另一个错误，我缺少以下Nuget参考：

Xamarin.Android.Support.Design

1. 另一个清理和构建...没有错误。

Answer 2

在 MainPage.xaml

中查看是否未更改任何设置

如果不在此处放置您的内容，只是为了查看是否有人看到错误。