我正在尝试将图像添加到JButton,我不确定我缺少什么.当我运行以下代码时,该按钮看起来与我创建它时没有任何图像属性完全相同.Water.bmp位于我的项目文件夹的根目录中.
ImageIcon water = new ImageIcon("water.bmp");
JButton button = new JButton(water);
frame.add(button);
我有一个问题,让transform-origin在Firefox中运行(v.18 +,其他版本没有经过测试).Webkit浏览器按预期工作.
我试图将原点设置为群组的中心,但到目前为止我没有尝试过任何工作.
这是代码:
<!DOCTYPE html>
<html>
<head>
<title>TEST</title>
<style>
#test{
-webkit-transform-origin: 50% 50%;
transform-origin: center center;
-webkit-animation: prop 2s infinite;
animation: prop 2s infinite;
}
@-webkit-keyframes prop {
0% { -webkit-transform: scale(1,1);}
20% { -webkit-transform: scale(1,.8);}
40% { -webkit-transform: scale(1,.6);}
50% { -webkit-transform: scale(1,.4);}
60% { -webkit-transform: scale(1,.2);}
70% { -webkit-transform: scale(1,.4);}
80% { -webkit-transform: scale(1,.6);}
90% { -webkit-transform: scale(1,.8);}
100% { -webkit-transform: scale(1,1);}
}
@keyframes prop {
0% { transform: matrix(1, 0, 0, 1, 0, 0);}
20% { …我正在开发iOS应用程序,并且在使用AFNetworking发出http请求时遇到了一些麻烦.
当我运行代码时,我收到错误:EXC_BAD_ACCESS(code = 2 address = 0x0).我尝试setCompletionBlock时发生错误.
我是Objective-C的新手,这让我很难过.
先感谢您.感谢大家的帮助!
#import "AFNetworking.h"
#import <Cordova/CDV.h>
#import "UploadImg.h"
@implementation UploadImg
- (void) uploadImg:(NSMutableArray*)arguments withDict:(NSMutableDictionary*)options{
NSURL *url = [NSURL URLWithString:@"http://test.com/mobile/"];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
NSData *imageData = [NSData dataFromBase64String:[arguments objectAtIndex:1]];
NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
[params setObject:@"TEST_STYLE" forKey:@"styleType"];
NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:@"POST" path:@"/upload.php" parameters:params constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
[formData appendPartWithFileData:imageData name:@"imageName" fileName:@"image.png" mimeType:@"image/png"];
}];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc]initWithRequest:request];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"success");
}
failure:^(AFHTTPRequestOperation *operation, NSError …