//
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// CBToast.m
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// ESVideoPhoneSDKDemo
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//
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// Created by 陈嘉乐 on 2020/6/10.
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// Copyright © 2020 eTouchSky. All rights reserved.
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//
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#import "CBToast.h"
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@implementation CBToast
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static UILabel *toastLabel = nil;
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+ (UILabel *)currentToastLabel {
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@synchronized(self) {
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if (toastLabel == nil) {
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toastLabel = [[UILabel alloc] init];
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toastLabel.backgroundColor = [UIColor darkGrayColor];
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toastLabel.font = [UIFont systemFontOfSize:16];
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toastLabel.textColor = [UIColor whiteColor];
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toastLabel.numberOfLines = 0;
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toastLabel.textAlignment = NSTextAlignmentCenter;
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toastLabel.lineBreakMode = NSLineBreakByCharWrapping;
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toastLabel.layer.masksToBounds = YES;
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toastLabel.layer.cornerRadius = 5.0;
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toastLabel.alpha = 0;
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}
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return toastLabel;
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}
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}
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//默认显示消息-->center
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+ (void)showToastAction:(NSString *)message
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{
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[self showToast:message location:@"center" showTime:2.0];
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}
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//显示消息
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+ (void)showToast:(NSString *)message location:(NSString *)aLocationStr showTime:(float)aShowTime
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{
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if (!message) {
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message = @"";
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}
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if ([[NSThread currentThread] isMainThread]) {
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toastLabel = [self currentToastLabel];
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[toastLabel removeFromSuperview];
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UIWindow *window = [UIApplication sharedApplication].delegate.window;
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[window addSubview:toastLabel];
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CGFloat main_width = [[UIScreen mainScreen] bounds].size.width;
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CGFloat main_height = [[UIScreen mainScreen] bounds].size.height;
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CGFloat width = [self stringText:message font:16 isHeightFixed:YES fixedValue:40];
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CGFloat height = 0;
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if (width > main_width - 20) {
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width = main_width - 20;
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height = [self stringText:message font:16 isHeightFixed:NO fixedValue:width];
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}else{
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height = 40;
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}
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CGRect labFrame;
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if (aLocationStr && [aLocationStr isEqualToString:@"top"]) {
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labFrame = CGRectMake((main_width-width)/2, main_height*0.15, width, height);
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}else if (aLocationStr && [aLocationStr isEqualToString:@"bottom"]) {
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labFrame = CGRectMake((main_width-width)/2, main_height*0.85, width, height);
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}else{
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//default-->center
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labFrame = CGRectMake((main_width-width)/2, main_height*0.5, width, height);
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}
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toastLabel.frame = labFrame;
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toastLabel.text = message;
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toastLabel.alpha = 1;
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[UIView animateWithDuration:aShowTime animations:^{
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toastLabel.alpha = 0;
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} completion:^(BOOL finished) {
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}];
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}else{
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dispatch_async(dispatch_get_main_queue(), ^{
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[self showToast:message location:aLocationStr showTime:aShowTime];
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});
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return;
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}
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}
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//根据字符串长度获取对应的宽度或者高度
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+ (CGFloat)stringText:(NSString *)aText font:(CGFloat)aFont isHeightFixed:(BOOL)isHeightFixed fixedValue:(CGFloat)fixedValue
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{
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CGSize size;
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if (isHeightFixed) {
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size = CGSizeMake(MAXFLOAT, fixedValue);
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} else {
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size = CGSizeMake(fixedValue, MAXFLOAT);
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}
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CGSize resultSize = CGSizeZero;
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if ([[[UIDevice currentDevice] systemVersion] doubleValue] >= 7.0) {
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//返回计算出的size
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resultSize = [aText boundingRectWithSize:size options:NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesFontLeading | NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:aFont]} context:nil].size;
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}
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if (isHeightFixed) {
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return resultSize.width + 20; //增加左右20间隔
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} else {
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return resultSize.height + 20; //增加上下20间隔
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}
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}
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@end
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