刘恺威蒋欣热拥,小学生现代诗大全,钢琴曲网站
这里实现的是进入页面后直接在导航栏上显示搜索框（包含右侧取消按钮），并弹出键盘且搜索框为直接可输入状态（第一响应者），点击右侧取消按钮后收起键盘并返回上一页。
搜索页面
1.实现代理uisearchbardelegate
@interface searchviewcontroller ()<uisearchbardelegate>
2.创建一个uisearchbar为属性
@property (nonatomic, strong) uisearchbar *searchbar;
3.进入页面后弹起键盘和离开页面前收起键盘
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- (void)viewdidappear:(bool)animated
{
[super viewdidappear:animated];
if (!_searchbar.isfirstresponder) {
[self.searchbar becomefirstresponder];
}
}
- (void)viewwilldisappear:(bool)animated
{
[super viewwilldisappear:animated];
[self.searchbar resignfirstresponder];
}
4.具体实现
- (void)setbarbuttonitem
{
//隐藏导航栏上的返回按钮
[self.navigationitem sethidesbackbutton:yes];
//用来放searchbar的view
uiview *titleview = [[uiview alloc] initwithframe:cgrectmake(5, 7, self.view.frame.size.width, 30)];
//创建searchbar
uisearchbar *searchbar = [[uisearchbar alloc] initwithframe:cgrectmake(0, 0, cgrectgetwidth(titleview.frame) - 15, 30)];
//默认提示文字
searchbar.placeholder = @"搜索内容";
//背景图片
searchbar.backgroundimage = [uiimage imagenamed:@"clearimage"];
//代理
searchbar.delegate = self;
//显示右侧取消按钮
searchbar.showscancelbutton = yes;
//光标颜色
searchbar.tintcolor = uicolorfromrgb(0x595959);
//拿到searchbar的输入框
uitextfield *searchtextfield = [searchbar valueforkey:@"_searchfield"];
//字体大小
searchtextfield.font = [uifont systemfontofsize:15];
//输入框背景颜色
searchtextfield.backgroundcolor = [uicolor colorwithred:234/255.0 green:235/255.0 blue:237/255.0 alpha:1];
//拿到取消按钮
uibutton *canclebtn = [searchbar valueforkey:@"cancelbutton"];
//设置按钮上的文字
[canclebtn settitle:@"取消" forstate:uicontrolstatenormal];
//设置按钮上文字的颜色
[canclebtn settitlecolor:[uicolor whitecolor] forstate:uicontrolstatenormal];
[titleview addsubview:searchbar];
self.searchbar = searchbar;
self.navigationitem.titleview = titleview;
}
5.实现代理方法
#pragma mark - uisearchbardelegate
- (bool)searchbarshouldbeginediting:(uisearchbar *)searchbar{
return yes;
}
- (void)searchbartextdidbeginediting:(uisearchbar *)searchbar {
searchbar.showscancelbutton = yes;
}
- (void)searchbarsearchbuttonclicked:(uisearchbar *)searchbar
{
nslog(@"searchbutton");
}
- (void)searchbarcancelbuttonclicked:(uisearchbar *)searchbar
{
[self.searchbar resignfirstresponder];
[self.navigationcontroller popviewcontrolleranimated:yes];
}
- (void)searchbartextdidendediting:(uisearchbar *)searchbar
{
searchbar.showscancelbutton = yes;
}
- (void)searchbar:(uisearchbar *)searchbar textdidchange:(nsstring *)searchtext
{
nsstring *inputstr = searchtext;
[self.results removeallobjects];
for (eldermodel *model in self.dataarray) {
if ([model.name.lowercasestring rangeofstring:inputstr.lowercasestring].location != nsnotfound) {
[self.results addobject:model];
}
}
[self.tableview reloaddata];
}
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