delphi xe 移动开发 调用截屏

android：View.getDrawingCache()

ios：

- (UIImage*)screenView:(UIView *)view{
CGRect rect = view.frame;
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
[view.layer renderInContext:context];
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return img;
}

把[view.layer renderInContext:context]改成
[self.navigationController.view.layer renderInContext:context]
可以连同导航栏一并截取

super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
cBtn = (customButton)super.findViewById(R.id.btn);
cBtn.setOutClickListener(new customButton.OutClickListener() {