From de0656a429be74e54af20f5ce3e62daf8733f9c4 Mon Sep 17 00:00:00 2001
From: WilliamBao <williambao@users.noreply.github.com>
Date: Fri, 19 Aug 2016 15:57:07 +0800
Subject: [PATCH] =?UTF-8?q?=E6=88=91=E7=9A=84=E5=90=8D=E7=89=87=E9=A1=B5?=
 =?UTF-8?q?=E9=9D=A2=E5=AF=BC=E8=88=AA=E6=A0=8F=E5=8A=A0=E4=BA=86[?=
 =?UTF-8?q?=E4=B8=8B=E8=BD=BD]=E6=8C=89=E9=92=AE?=
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

在导航栏右侧加了下载二维码功能
---
 .../QRCode/HMScanerCardViewController.m            | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/HMQRCodeScanner/QRCode/HMScanerCardViewController.m b/HMQRCodeScanner/QRCode/HMScanerCardViewController.m
index 77c65d0..b3530de 100644
--- a/HMQRCodeScanner/QRCode/HMScanerCardViewController.m
+++ b/HMQRCodeScanner/QRCode/HMScanerCardViewController.m
@@ -18,6 +18,7 @@ @interface HMScanerCardViewController()
 
 @implementation HMScanerCardViewController {
     UIImageView *cardImageView;
+    UIBarButtonItem *downloadButton;
 }
 
 #pragma mark - 构造函数
@@ -50,13 +51,24 @@ - (void)viewDidLoad {
 
 /// 准备导航栏
 - (void)prepareNavigationBar {
-    // 1> 背景颜色
+    // 1> 背景图片
     [self.navigationController.navigationBar setBarTintColor:[UIColor colorWithWhite:0.1 alpha:1.0]];
     self.navigationController.navigationBar.translucent = YES;
     self.navigationController.navigationBar.shadowImage = [[UIImage alloc] init];
     
     // 2> 标题
     self.title = @"我的名片";
+    
+    // 3> 加个下载图片按钮
+    downloadButton = [[UIBarButtonItem alloc]initWithTitle:@"下载" style:UIBarButtonItemStyleBordered target:self action:@selector(downloadImage)];
+    self.navigationItem.rightBarButtonItem = downloadButton;
+}
+
+// 下载图片到用户相册
+-(void)downloadImage {
+    UIImageWriteToSavedPhotosAlbum(cardImageView.image, self, nil, nil);
+    [downloadButton setTitle:@"已下载"];
+    self.navigationItem.rightBarButtonItem.enabled = NO;
 }
 
 @end