iOS App開發中UISearchBar搜尋欄組件的基本用法整理_IOS

基本屬性

複製代碼 代碼如下:

@UISearchBar search = [[UISearchBar alloc]initWithFrame:CGRectMake(0,44,320,120)];

pragma mark -基本設定

複製代碼 代碼如下:

//控制項的樣式 預設--0白色,1是黑色風格

/*
UIBarStyleDefault          = 0,
UIBarStyleBlack            = 1,
search.barStyle =UIBarStyleDefault;
/*

UISearchBarStyleDefault,
// currently UISearchBarStyleProminent

UISearchBarStyleProminent, // used my Mail, Messages and Contacts(provides no default background color or image but will display one if customized as such系統提供的顏色和圖片無效,自定製有效)

     UISearchBarStyleMinimal    // used by Calendar, Notes and Music

     */

    search.searchBarStyle =UISearchBarStyleDefault;

    // 控制項上面的顯示的文字

    search.text =@"HMT";

    // 顯示在頂部的單行文字，通常作為一個提示行

    search.prompt =@"DOTA";

    // 半透明的提示文字，輸入搜尋內容消失

    search.placeholder =@"請輸入要搜尋的詞語";

    // bar的顏色(具有漸層效果)搜尋欄閃動條和選擇欄邊框,取消按鈕和選擇欄被選中時候都會變成設定的顏色

    search.tintColor = [UIColor redColor];

    // 除搜尋欄框框,就像貼了一張鏤空了搜尋欄的顏色貼圖,不影響其他任何設定的顏色

    search.barTintColor = [UIColor whiteColor];

    // 指定控制項是否會有透視效果

    search.translucent =YES;

    // 設定在什麼的情況下自動大寫

    /*

     UITextAutocapitalizationTypeNone,             //除非自己點擊大寫,否則永不大寫

     UITextAutocapitalizationTypeWords,            //以單詞來區分,每個單字首大寫

     UITextAutocapitalizationTypeSentences,        //以句子來區分

     UITextAutocapitalizationTypeAllCharacters,    //所有字母全部大寫

     */

    search.autocapitalizationType =UITextAutocapitalizationTypeNone;

    // 對於文字物件自動校正風格(額,我也不知道有什麼用)

    /*

     UITextAutocorrectionTypeDefault,

     UITextAutocorrectionTypeNo,

     UITextAutocorrectionTypeYes,

     */

    search.autocorrectionType =UITextAutocorrectionTypeNo;

    // 鍵盤的樣式(具體可參考文章UITableView詳解(一))

    search.keyboardType =UIKeyboardTypeNumberPad;

pragma mark - 設定搜尋欄右邊按鈕表徵圖(UISearchBarIcon)

複製代碼 代碼如下:

    // 是否在控制項的右端顯示一個書的按鈕

    search.showsBookmarkButton =YES;

    // 是否顯示cancel按鈕(靜態)

    //search.showsCancelButton = YES;

    // 是否顯示cancel按鈕(帶有動畫效果)

    [search setShowsCancelButton:YES animated:YES];

    // 是否在控制項的右端顯示搜尋結果按鈕(圖形是一個圓裡面放著一個向下的箭頭)

    search.showsSearchResultsButton =YES;

    // 搜尋結果按鈕是否被選中

    search.showsSearchResultsButton =YES;

    // 設定控制項的右端顯示搜尋結果按鈕處 --- 可用圖片替換掉

    [search setImage:[UIImage imageNamed:@"qiyi.png"]forSearchBarIcon:UISearchBarIconResultsList state:UIControlStateNormal];

pragma mark - 搜尋欄下部選擇欄

複製代碼 代碼如下:

    // 搜尋欄下部的選擇欄，數組裡面的內容是按鈕的標題

    search.scopeButtonTitles = [NSArray arrayWithObjects:@"iOS",@"Android",@"iPhone",nil];

    // 進入介面,搜尋欄下部的預設選擇欄按鈕的索引(也就是第一出現在哪個選擇欄)

    search.selectedScopeButtonIndex =2;

    // 控制搜尋欄下部的選擇欄是否顯示出來(顯示的話,就要修改search的frame,不顯示的話80就夠了)

    search.showsScopeBar =YES;

pragma mark - 設定控制項圖片

複製代碼 代碼如下:

    // 設定控制項背景圖片

    search.backgroundImage = [UIImage imageNamed:@"qiyi.png"];

    // 設定搜尋欄下部背景圖片

    search.scopeBarBackgroundImage = [UIImage imageNamed:@"qiyi.png"];

pragma mark - 協議UISearchBarDelegate

(不解釋了,看名字,已經很明顯了)

複製代碼 代碼如下:

@編輯文本

 // UISearchBar得到焦點並開始編輯時，執行該方法

(BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar;           // return NO to not become first responder

(void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar{          // called when text starts editing

          [searchBar setShowsCancelButton:YES animated:YES];   //  動畫顯示取消按鈕

}

(BOOL)searchBarShouldEndEditing:(UISearchBar *)searchBar;       // return NO to not resign first responder

(void)searchBarTextDidEndEditing:(UISearchBar *)searchBar;            // called when text ends editing

(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{   // called when text changes (including clear)

   @ 當搜尋內容變化時，執行該方法。很有用，可以實現時實搜尋

}

複製代碼 代碼如下:

(BOOL)searchBar:(UISearchBar *)searchBar shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)textNS_AVAILABLE_IOS(3_0);                 // called before text changes
@按鈕點擊

(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar;     // called when keyboard search button pressed

(void)searchBarBookmarkButtonClicked:(UISearchBar *)searchBar;        // called when bookmark button pressed

(void)searchBarCancelButtonClicked:(UISearchBar *) searchBar{           // called when cancel button pressed

    [searchBar setShowsCancelButton:NO animated:NO];    // 取消按鈕回收

    [searchBar resignFirstResponder];                                // 取消第一響應值,鍵盤迴收,搜尋結束

}

(void)searchBarResultsListButtonClicked:(UISearchBar *)searchBarNS_AVAILABLE_IOS(3_2);// called when search results button pressed

(void)searchBar:(UISearchBar *)searchBar selectedScopeButtonIndexDidChange:(NSInteger)selectedScopeNS_AVAILABLE_IOS(3_0);

資料刷選類:NSPredicate

複製代碼 代碼如下:

@假設: NSArray array = [[NSArray alloc]initWithObjects:@"luna",@"moon",@"",@"lion",@"coco", nil];

// 資料的處理主要發生在這個方法中

(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{

    // 方法一:([c]不區分大小寫[d]不區分發音符號即沒有重音符號[cd]既不區分大小寫，也不區分發音符號。)

    NSPredicate * predicate = [NSPredicate predicateWithFormat:@"SELF CONTAINS [cd] %@",searchText];

   //  數組提供的快速遍曆,返回的類型是NSArray

   NSLog(@"%@",[ _array filteredArrayUsingPredicate:predicate]);

    // 方法二:

    for (int i = 0; i count]; i++) {

        if ([predicate evaluateWithObject:[ _array objectAtIndex:i]]) {

            NSLog(@"%@",[arrayobjectAtIndex:i]);

        }

    }

}