[cpp]
//獲得某個window的某個subView
UIView *view = [[[[[UIApplication sharedApplication] windows] objectAtIndex:0] subviews] lastObject];
NSInteger index = 0;//用來給保存的png命名
for (UIView *subView in [view subviews]) {//遍歷這個view的subViews
if ([subView isKindOfClass:NSClassFromString(@"MKMapView")]) {//找到自己需要的subView
NSLog(@"fund");
//支持retina高分的關鍵
if(UIGraphicsBeginImageContextWithOptions != NULL)
{
UIGraphicsBeginImageContextWithOptions(subView.frame.size, NO, 0.0);
} else {
UIGraphicsBeginImageContext(subView.frame.size);
}
//獲取圖像
[subView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
//保存圖像
NSString *path = [NSHomeDirectory() stringByAppendingFormat:@"/%d.png",index];
if ([UIImagePNGRepresentation(image) writeToFile:path atomically:YES]) {
index += 1;
NSLog(@"Succeeded! %@",path);
}
else {
NSLog(@"Failed!");
}
}
}