MBProgressHUD是一個開源項目,實現了很多種樣式的提示框,使用上簡單、方便,並且可以對顯示的內容進行自訂,功能很強大,很多項目中都有使用到。到GitHub上可以下載到項目源碼https://github.com/jdg/MBProgressHUD,下載下來後直接把MBProgressHUD.h和MBProgressHUD.m拖入工程中就行,別忘了選擇拷貝到工程。完了在需要使用的地方匯入標頭檔就可以開始使用了。首先看下工程:
接下來是整個Demo的完整介面,這裡我只選擇出了幾個常用的對話方塊,其他樣式的在源碼提供的Demo裡可以找到,要用的話直接參考就可以。
接下來直接上代碼了,標頭檔部分:
#import <UIKit/UIKit.h>#import "MBProgressHUD.h"@interface ViewController : UIViewController{ //HUD(Head-Up Display,意思是抬頭顯示的意思) MBProgressHUD *HUD;}- (IBAction)showTextDialog:(id)sender;- (IBAction)showProgressDialog:(id)sender;- (IBAction)showProgressDialog2:(id)sender;- (IBAction)showCustomDialog:(id)sender;- (IBAction)showAllTextDialog:(id)sender;@end
實現檔案(按鈕實現部分):
- (IBAction)showTextDialog:(id)sender { //初始化進度框,置於當前的View當中 HUD = [[MBProgressHUD alloc] initWithView:self.view]; [self.view addSubview:HUD]; //如果設定此屬性則當前的view置於後台 HUD.dimBackground = YES; //設定對話方塊文字 HUD.labelText = @"請稍等"; //顯示對話方塊 [HUD showAnimated:YES whileExecutingBlock:^{ //對話方塊顯示時需要執行的操作 sleep(3); } completionBlock:^{ //操作執行完後取消對話方塊 [HUD removeFromSuperview]; [HUD release]; HUD = nil; }];}- (IBAction)showProgressDialog:(id)sender { HUD = [[MBProgressHUD alloc] initWithView:self.view]; [self.view addSubview:HUD]; HUD.labelText = @"正在載入"; //設定模式為進度框形的 HUD.mode = MBProgressHUDModeDeterminate; [HUD showAnimated:YES whileExecutingBlock:^{ float progress = 0.0f; while (progress < 1.0f) { progress += 0.01f; HUD.progress = progress; usleep(50000); } } completionBlock:^{ [HUD removeFromSuperview]; [HUD release]; HUD = nil; }];}- (IBAction)showProgressDialog2:(id)sender { HUD = [[MBProgressHUD alloc] initWithView:self.view]; [self.view addSubview:HUD]; HUD.labelText = @"正在載入"; HUD.mode = MBProgressHUDModeAnnularDeterminate; [HUD showAnimated:YES whileExecutingBlock:^{ float progress = 0.0f; while (progress < 1.0f) { progress += 0.01f; HUD.progress = progress; usleep(50000); } } completionBlock:^{ [HUD removeFromSuperview]; [HUD release]; HUD = nil; }];}- (IBAction)showCustomDialog:(id)sender { HUD = [[MBProgressHUD alloc] initWithView:self.view]; [self.view addSubview:HUD]; HUD.labelText = @"操作成功"; HUD.mode = MBProgressHUDModeCustomView; HUD.customView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Checkmark"]] autorelease]; [HUD showAnimated:YES whileExecutingBlock:^{ sleep(2); } completionBlock:^{ [HUD removeFromSuperview]; [HUD release]; HUD = nil; }]; }- (IBAction)showAllTextDialog:(id)sender { HUD = [[MBProgressHUD alloc] initWithView:self.view]; [self.view addSubview:HUD]; HUD.labelText = @"操作成功"; HUD.mode = MBProgressHUDModeText; //指定距離中心點的X軸和Y軸的位移量,如果不指定則在螢幕中間顯示// HUD.yOffset = 150.0f;// HUD.xOffset = 100.0f; [HUD showAnimated:YES whileExecutingBlock:^{ sleep(2); } completionBlock:^{ [HUD removeFromSuperview]; [HUD release]; HUD = nil; }];}
依次實現的效果如下:
下面這個效果就類似Android中的Toast:
以上就簡單介紹了MBProgressHUD的使用,這裡都是採用block的形式來操作的,這樣寫起代碼來更直觀也更高效。
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