UITableView加载网络数据的优化
效果
源码
https://github.com/YouXianMing/Animations
//
// TableViewLoadDataController.m
// Animations
//
// Created by YouXianMing on 16/2/2.
// Copyright © 2016年 YouXianMing. All rights reserved.
//
#import "TableViewLoadDataController.h"
#import "V_2_X_Networking.h"
#import "TableViewLoadDataRootModel.h"
#import "LoadUrlDataCell.h"
#import "CellDataAdapter.h"
#import "NSString+LabelWidthAndHeight.h"
#import "UIFont+Fonts.h"
#import "UIView+SetRect.h"
#import "MessageAlertView.h"
#import "GCD.h"
@interface TableViewLoadDataController () <UITableViewDelegate, UITableViewDataSource, NetworkingDelegate>
@property (nonatomic, strong) UITableView *tableView;
@property (nonatomic, strong) V_2_X_Networking *dataNetworking;
@property (nonatomic, strong) NSMutableArray <CellDataAdapter *> *datasArray;
@property (nonatomic, strong) MessageAlertView *showLoadingView;
@end
@implementation TableViewLoadDataController
- (void)setup {
[super setup];
[self createDataSource];
[self createTableView];
[self startNetworking];
}
- (void)createDataSource {
self.datasArray = [NSMutableArray array];
}
- (void)startNetworking {
self.showLoadingView = [[MessageAlertView alloc] init];
self.showLoadingView.message = @"loading...";
self.showLoadingView.contentView = self.contentView;
[self.showLoadingView show];
self.dataNetworking = [V_2_X_Networking getMethodNetworkingWithUrlString:@"https://api.app.net/stream/0/posts/stream/global"
requestDictionary:nil
requestBodyType:[HttpBodyType type]
responseDataType:[JsonDataType type]];
self.dataNetworking.delegate = self;
self.dataNetworking.timeoutInterval = @(15);
[self.dataNetworking startRequest];
}
- (void)createTableView {
self.tableView = [[UITableView alloc] initWithFrame:self.contentView.bounds];
self.tableView.delegate = self;
self.tableView.dataSource = self;
self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
[self.tableView registerClass:[LoadUrlDataCell class] forCellReuseIdentifier:@"LoadUrlDataCell"];
[self.contentView addSubview:self.tableView];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.datasArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
CellDataAdapter *adapter = self.datasArray[indexPath.row];
CustomAdapterTypeCell *cell = [tableView dequeueReusableCellWithIdentifier:adapter.cellReuseIdentifier];
cell.dataAdapter = adapter;
[cell loadContent];
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
CellDataAdapter *adapter = self.datasArray[indexPath.row];
return adapter.cellHeight;
}
#pragma mark - NetworkingDelegate
- (void)requestSucess:(Networking *)networking data:(id)data {
[self.showLoadingView hide];
TableViewLoadDataRootModel *rootModel = [[TableViewLoadDataRootModel alloc] initWithDictionary:data];
if (rootModel.meta.code.integerValue == 200) {
[GCDQueue executeInGlobalQueue:^{
for (int i = 0; i < rootModel.data.count; i++) {
DataModel *dataModel = rootModel.data[i];
if (dataModel.user.infomation.text.length <= 0) {
continue;
}
NSDictionary *fontInfo = @{NSFontAttributeName: [UIFont HeitiSCWithFontSize:14.f]};
CGFloat height = [dataModel.user.infomation.text heightWithStringAttribute:fontInfo fixedWidth:Width - 80];
CGFloat cellHeight = height <= 50 ? 10 + 50 + 10 : 10 + height + 10;
CellDataAdapter *dataAdapter = [CellDataAdapter cellDataAdapterWithCellReuseIdentifier:@"LoadUrlDataCell" data:dataModel
cellHeight:cellHeight cellType:0];
[self.datasArray addObject:dataAdapter];
}
[GCDQueue executeInMainQueue:^{
NSMutableArray *indexPaths = [NSMutableArray array];
for (int i = 0; i < self.datasArray.count; i++) {
[indexPaths addObject:[NSIndexPath indexPathForItem:i inSection:0]];
}
[self.tableView insertRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationFade];
}];
}];
} else {
AbstractAlertView *alertView = [[MessageAlertView alloc] init];
alertView.message = @"No data now.";
alertView.contentView = self.contentView;
alertView.autoHiden = YES;
alertView.delayAutoHidenDuration = 2.f;
[alertView show];
}
}
- (void)requestFailed:(Networking *)networking error:(NSError *)error {
[self.showLoadingView hide];
AbstractAlertView *alertView = [[MessageAlertView alloc] init];
alertView.message = @"Network error.";
alertView.contentView = self.contentView;
alertView.autoHiden = YES;
alertView.delayAutoHidenDuration = 2.f;
[alertView show];
}
@end细节
