350 lines
11 KiB
Objective-C
350 lines
11 KiB
Objective-C
//
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// UMComGridViewerController.m
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// UMCommunity
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//
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// Created by luyiyuan on 14/9/2.
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// Copyright (c) 2014年 luyiyuan. All rights reserved.
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//
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#import "UMComGridViewerController.h"
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#import "UMImageProgressView.h"
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#import "UMComShowToast.h"
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#import <UMComDataStorage/UMComImageUrl.h>
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typedef enum {
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preImage = 0,
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curImage = 1,
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rearImage = 2,
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}ImageLocation;
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#define A_WEEK_SECONDES (60*60*24*7)
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@interface UMComGridViewerController ()
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@property (strong,nonatomic) UIPageControl *pageControl;
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@property (strong,nonatomic) UIScrollView *scrollView;
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@property (nonatomic,strong) NSArray *imageModels;
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@property (nonatomic,strong) NSMutableArray *arrayImageView;
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@property (nonatomic,strong) NSMutableArray *contentViews;
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@property (nonatomic,assign) NSInteger totalPageCount;
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@property (nonatomic,assign) NSInteger currentPageIndex;
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@end
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@implementation UMComGridViewerController
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{
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BOOL fisrtime;
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}
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- (id)initWithArray:(NSArray *)array index:(NSUInteger)index
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{
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self = [super init];
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if(self)
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{
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self.arrayImageView = [[NSMutableArray alloc] init];
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self.scrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];
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self.scrollView.pagingEnabled = YES;
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self.scrollView.showsHorizontalScrollIndicator = NO;
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self.scrollView.showsVerticalScrollIndicator = NO;
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[self.scrollView setDelegate:self];
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for(int i=0;i<3; i++)
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{
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UMZoomScrollView *zoomScrollView = [[UMZoomScrollView alloc]initWithFrame:CGRectMake(i*self.view.bounds.size.width, 0, self.view.bounds.size.width, self.view.bounds.size.height)];
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UMImageProgressView *iv = [[UMImageProgressView alloc] initWithFrame:CGRectMake(0, 0, zoomScrollView.frame.size.width, zoomScrollView.frame.size.height)];
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iv.isAutoStart = NO;
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[iv setTag:i];
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[iv setCacheSecondes:A_WEEK_SECONDES];
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zoomScrollView.imageView = iv;
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[self.arrayImageView addObject:zoomScrollView];
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}
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self.pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(0, self.view.bounds.size.height - 20, self.view.bounds.size.width, 20)];
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[self.view addSubview:self.scrollView];
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[self.view addSubview:self.pageControl];
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self.view.backgroundColor = [UIColor blackColor];
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//添加触控
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UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapImageView:)];
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[self.view addGestureRecognizer:tapGesture];
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[self setArray:array index:index];
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}
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return self;
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}
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- (void)setArray:(NSArray *)array index:(NSUInteger)index
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{
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fisrtime = YES;
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self.imageModels = array;
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NSUInteger count = [array count];
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if (count <= 9) {
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[self.pageControl setNumberOfPages:count];
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self.pageControl.currentPage = index;
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}
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self.currentPageIndex = index;
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self.contentViews = [NSMutableArray arrayWithCapacity:3];
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self.totalPageCount = count;
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[self configContentView];
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}
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- (void)tapImageView:(UITapGestureRecognizer *)tapGesture
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{
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[self dismissViewControllerAnimated:YES completion:^{
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for (UMZoomScrollView *zoomView in self.arrayImageView) {
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zoomView.zoomScale = 1.0;
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zoomView.imageView.center = CGPointMake(zoomView.frame.size.width/2, zoomView.frame.size.height/2);
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}
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}];
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}
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//默认一周（60*60*24*7）
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- (void)setCacheSecondes:(NSTimeInterval)secondes
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{
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for(UMZoomScrollView *iv in self.arrayImageView)
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{
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[iv setCacheSecondes:secondes];
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}
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}
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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// Do any additional setup after loading the view.
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}
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- (void)viewWillAppear:(BOOL)animated
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{
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[super viewWillAppear:animated];
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self.scrollView.delegate = self;
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}
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- (void)viewWillDisappear:(BOOL)animated
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{
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[super viewWillDisappear:animated];
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self.scrollView.delegate = nil;
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}
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- (void)didReceiveMemoryWarning
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{
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[super didReceiveMemoryWarning];
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// Dispose of any resources that can be recreated.
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}
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- (void)scrollViewDidScroll:(UIScrollView *)scrollView
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{
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if (scrollView.contentOffset.x >= (2*CGRectGetWidth(scrollView.frame))) {
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self.currentPageIndex = [self getValidNextPageIndexWithPageIndext:self.currentPageIndex+1];
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[self configContentView];
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}
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if (scrollView.contentOffset.x <= 0) {
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self.currentPageIndex = [self getValidNextPageIndexWithPageIndext:self.currentPageIndex-1];
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[self configContentView];
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}
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self.pageControl.currentPage = self.currentPageIndex;
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}
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- (void)setTotalPageCount:(NSInteger)totalPageCount
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{
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_totalPageCount = totalPageCount;
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if (_totalPageCount > 0) {
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if (_totalPageCount == 1) {
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self.scrollView.contentSize = CGSizeMake(CGRectGetWidth(self.scrollView.frame), CGRectGetHeight(self.scrollView.frame));
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self.scrollView.contentOffset = CGPointMake(0, 0);
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self.scrollView.scrollEnabled = NO;
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}else{
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self.scrollView.contentSize = CGSizeMake(3*CGRectGetWidth(self.scrollView.frame), CGRectGetHeight(self.scrollView.frame));
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self.scrollView.contentOffset = CGPointMake(self.scrollView.frame.size.width, 0);
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self.scrollView.scrollEnabled = YES;
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}
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}else{
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[self.contentViews removeAllObjects];
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}
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}
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- (void)configContentView
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{
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[self.scrollView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
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[self setScrollViewContentDataSource];
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NSInteger counter = 0;
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for (UMZoomScrollView *contenView in self.contentViews) {
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contenView.frame = CGRectMake(self.scrollView.frame.size.width *counter+((self.scrollView.frame.size.width - contenView.frame.size.width)/2), 0, contenView.frame.size.width, contenView.frame.size.height);
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counter ++;
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[contenView startDownload];
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[self.scrollView addSubview:contenView];
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}
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[self.scrollView setContentOffset:CGPointMake(self.view.bounds.size.width, 0.0f) animated:NO];
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}
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- (UMZoomScrollView *)zoomScrollViewWithPageIndex:(NSInteger)pageIndex imageLocation:(ImageLocation)imageLocation
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{
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//
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if (self.imageModels.count > 0) {
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UMZoomScrollView *zoomView = nil;
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if (imageLocation == preImage) {
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zoomView = self.arrayImageView[0];
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}else if (imageLocation == curImage){
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zoomView = self.arrayImageView[1];
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}else{
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zoomView = self.arrayImageView[2];
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}
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if (zoomView.zoomScale > 1) {
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[zoomView setZoomScale:1 animated:NO];
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}
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if (self.imageModels.count > pageIndex) {
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;
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UMComImageUrl *imageModel = self.imageModels[pageIndex];
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zoomView.imageView.contentMode = UIViewContentModeScaleAspectFit;
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[zoomView.imageView setImageURL:[NSURL URLWithString:imageModel.large_url_string]];
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[zoomView.imageView setThumImageViewUrl:imageModel.small_url_string];
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}
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return zoomView;
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}
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return nil;
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}
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//获取将要加载图片
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- (void)setScrollViewContentDataSource
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{
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[self.contentViews removeAllObjects];
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@try {
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NSInteger prePageIndex = [self getValidNextPageIndexWithPageIndext:self.currentPageIndex-1];
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NSInteger rearPageIndex = [self getValidNextPageIndexWithPageIndext:self.currentPageIndex+1];
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UMZoomScrollView *resaultView = [self zoomScrollViewWithPageIndex:prePageIndex imageLocation:preImage];
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if(resaultView){
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[self.contentViews addObject:resaultView];
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}
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resaultView = [self zoomScrollViewWithPageIndex:self.currentPageIndex imageLocation:curImage];
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if(resaultView){
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[self.contentViews addObject:resaultView];
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}
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resaultView = [self zoomScrollViewWithPageIndex:rearPageIndex imageLocation:rearImage];
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if(resaultView){
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[self.contentViews addObject:resaultView];
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}
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}
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@catch (NSException *exception) {
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NSLog(@"exception:%@", exception);
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}
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@finally {
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}
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}
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- (NSInteger)getValidNextPageIndexWithPageIndext:(NSInteger)currentPageIndex;
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{
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if (currentPageIndex == -1) {
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return self.totalPageCount - 1;
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}else if (currentPageIndex == self.totalPageCount || currentPageIndex < -1){
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return 0;
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}else if (currentPageIndex > self.totalPageCount){
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return self.totalPageCount - 1;
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}else{
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return currentPageIndex;
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}
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}
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- (BOOL)prefersStatusBarHidden {
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return YES;
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}
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@end
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@implementation UMZoomScrollView
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{
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UIActionSheet *actionSheet;
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}
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- (instancetype)initWithFrame:(CGRect)frame
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{
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self = [super initWithFrame:frame];
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if (self) {
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self.delegate = self;
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self.showsHorizontalScrollIndicator = NO;
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self.showsVerticalScrollIndicator = NO;
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self.backgroundColor = [UIColor clearColor];
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UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(saveImageToAssest:)];
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longPress.numberOfTouchesRequired = 1;
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[self addGestureRecognizer:longPress];
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}
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return self;
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}
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- (void)setImageView:(UMImageProgressView *)imageView
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{
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_imageView = imageView;
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_imageView.center = CGPointMake(self.frame.size.width/2, self.frame.size.height/2);
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_imageView.backgroundColor = [UIColor clearColor];
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if (imageView.isCacheImage) {
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self.minimumZoomScale = 1.0;
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self.maximumZoomScale = 5.0;
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} else{
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self.minimumZoomScale = 1.0;
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self.maximumZoomScale = 1.0;
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}
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[self addSubview:_imageView];
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}
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- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
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{
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return self.imageView;
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}
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- (void)scrollViewDidZoom:(UIScrollView *)scrollView
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{
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CGFloat offsetX = (scrollView.bounds.size.width > scrollView.contentSize.width)?
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(scrollView.bounds.size.width - scrollView.contentSize.width) /2 : 0.0;
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CGFloat offsetY = (scrollView.bounds.size.height > scrollView.contentSize.height)?
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(scrollView.bounds.size.height - scrollView.contentSize.height) /2 : 0.0;
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self.imageView.center = CGPointMake(scrollView.contentSize.width /2 + offsetX,scrollView.contentSize.height /2 + offsetY);
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}
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//默认一周（60*60*24*7）
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- (void)setCacheSecondes:(NSTimeInterval)secondes
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{
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[self.imageView setCacheSecondes:secondes];
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}
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- (void)startDownload
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{
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[self.imageView startImageLoad];
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}
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- (void)saveImageToAssest:(UILongPressGestureRecognizer *)longPress
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{
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if (longPress.state == UIGestureRecognizerStateBegan) {
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if (![actionSheet isVisible]) {
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actionSheet = [[UIActionSheet alloc]initWithTitle:nil delegate:self cancelButtonTitle:UMComLocalizedString(@"um_com_cancel", @"取消") destructiveButtonTitle:UMComLocalizedString(@"um_com_saveImageToAlbum", @"保存图片到相册")otherButtonTitles:nil, nil];
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if (!actionSheet.superview) {
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[actionSheet showInView:self.superview];
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}
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}
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}
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}
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- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
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{
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if (buttonIndex == 0) {
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if (self.imageView.image) {
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UIImageWriteToSavedPhotosAlbum(self.imageView.image, self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);
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}
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}
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}
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// 指定回调方法
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- (void)image: (UIImage *) image didFinishSavingWithError: (NSError *) error contextInfo: (void *) contextInfo
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{
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[UMComShowToast saveIamgeResultNotice:error];
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}
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@end
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