android - 如何通过代码添加分隔 View

Question

容器是一个线性布局，

<LinearLayout
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

在代码中，我尝试将 View 添加为:

final LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

// add alpha view to container view
View alphaView = inflater.inflate(R.layout.item_info_alpha, null, false);
container.addView(alphaView);

// add divider view to container view
container.addView(inflater.inflate(R.layout.item_divider, null, false));

// add beta view to container view
View betaView = inflater.inflate(R.layout.item_info_beta, null, false);
container.addView(betaView);

// add divider view to container view
container.addView(inflater.inflate(R.layout.item_divider, null, false));

item_divider.xml

<?xml version="1.0" encoding="utf-8"?>
<View xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="8dp"
    android:background="#F2F2F4" />

通过代码添加时分隔符不可见。

如何在向线性布局添加 View 时使此分隔线可见？

为什么当我们通过 xml 添加 View 时，它没有添加到 LinearLayout 中？

Answer 1

你可以简单地这样做:

container.addView(inflater.inflate(R.layout.item_divider, null));

或者试试这个代码:

        View view = new View(YOUR_CONTEXT); //getContext() for example
        int hight = 8;
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, hight);
        view.setLayoutParams(params);
        view.setBackgroundColor(Color.parseColor("#F2F2F4"));
        container.addView(view);