Question

我有一个RelativeLayout，它由ImageView和TextView组成。现在，对于这个RelativeLayout，我想添加一个LinearLayout，它应该在TextView下面对齐。现在，LinearLayout被添加到RelativeLayout，但它没有在TextView下面对齐。这是我的代码：

void addRatingToImage(RelativeLayout relativelLayout, Movies movieObject) {
    ImageView ratingImageView;
    LinearLayout ratingLayout = new LinearLayout(mContext);
    ratingLayout.setOrientation(LinearLayout.HORIZONTAL);

    double roundedRating = roundUpRating(Double.parseDouble(movieObject.mRating));
    for(int i = 0; i < 5; i++) {                        //TODO: Check 
        ratingImageView = new ImageView(mContext);
        if(i < roundedRating) {
            ratingImageView.setBackgroundResource(R.drawable.star_2);

            ratingLayout.addView(ratingImageView);
        }
        else {
            ratingImageView.setBackgroundResource(R.drawable.star_1);
            ratingLayout.addView(ratingImageView);
        }

    }

    RelativeLayout.LayoutParams ratingLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);

    TextView movieNameTextView = (TextView)relativelLayout.getChildAt(2);
    ratingLayoutParams.addRule(RelativeLayout.BELOW, movieNameTextView.getId());

    ratingLayout.setLayoutParams(ratingLayoutParams);

    relativelLayout.addView(ratingLayout);
}

我有一个疑问。 RelativeLayout.BELOW在应用于不同类型的布局时是否有效，嵌套在RelativeLayout中？感谢。

Answer 1

是的，RelativeLayout.BELOW可行。无论子视图类是什么，它都由父RelativeLayout识别。

根据您的问题，我认为RelativeLayout表现得那样，因为您为fill_parent的布局宽度设置了TextView movieNameTextView。

如何以编程方式在RelativeLayout中添加LinearLayout？

1 个答案: