关于延长RelativeLayout的自定义布局Onlayout方法 [英] Onlayout method on custom layout extending RelativeLayout

问题描述

什么是正确的方式来覆盖onLayout方法延长RelativeLayout的自定义布局？ 我试图将所有的意见在排序表中。我们的想法是，以填补一行与ImageViews，直到它的全部，然后继续在新行。

  @覆盖
保护无效onLayout（布尔改变，诠释L，INT T，INT R，int b）在{
        super.onLayout（改变，L，T，R，B）;

        INT idOfViewToTheLeft = 1;

        RelativeLayout.LayoutParams PARAMS =新RelativeLayout.LayoutParams（的getContext（））;

        ImageView的书签;
        对于（INT计数器= 1;计数器＆LT; getChildCount（）;反++）{
            书签=（ImageView的）findViewById（柜）;
            如果（计数器→1）{
               如果（this.getWidth（）＆GT;（bookmark.getLeft（）+ bookmark.getWidth（）））{
                   params.addRule（RelativeLayout.RIGHT_OF，bookmark.getId（） -  1）;
               } 其他 {
                   params.addRule（RelativeLayout.BELOW，idOfViewToTheLeft）;
                   idOfViewToTheLeft = bookmark.getId（）;
               }
            }

            bookmark.setScaleType（ScaleType.CENTER_CROP）;
        }
    }
    }
 

解决方案

我将解释如何编写自定义布局（尤其是一FlowLayout中，这是你想要做什么似乎像）的<一个href="https://docs.google.com/a/google.com/leaf?id=0B_VKZCqEnHblNDdiY2UxODgtYWNhNS00MmU4LWE4NDMtZjQ1OWI5MDMxZTVh&sort=name&layout=list&num=50"相对=nofollow>这个 presentation

视频可以在这里找到。

What is the proper way to override onLayout method in a custom layout extending the RelativeLayout? I'm trying to place all views in sort of a table. The idea is to fill one row with ImageViews until it's full and then continue in the new row.

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);

        int idOfViewToTheLeft = 1;

        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(getContext(),);

        ImageView bookmark;
        for(int counter = 1; counter < getChildCount(); counter++) {
            bookmark = (ImageView) findViewById(counter);
            if(counter > 1) {
               if(this.getWidth() > (bookmark.getLeft() + bookmark.getWidth())) {
                   params.addRule(RelativeLayout.RIGHT_OF, bookmark.getId() - 1);
               } else {
                   params.addRule(RelativeLayout.BELOW, idOfViewToTheLeft);
                   idOfViewToTheLeft = bookmark.getId();
               }
            }

            bookmark.setScaleType(ScaleType.CENTER_CROP);
        }
    }
    }

解决方案

I explain how to write custom layouts (and in particular a FlowLayout, which is what you want to do it seems like) in this presentation

Video available here.

这篇关于关于延长RelativeLayout的自定义布局Onlayout方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！