水平动态添加TextViews到等权重线性布局

Horizontally Add TextViews to Equally Weighted Linear Layout Dynamically

我正在学习 Android 为此,我想动态地将文本视图添加到具有相等权重的线性布局中,例如:

textview1 textview2(以此类推)

但如果只有一个 textview,它应该填充父级,即它应该匹配父级,如果有两个项目,那么它们应该为每个项目填充一半的父级!

所以这是我在回收器视图中的填充方法,用于使用文本视图动态填充线性布局:

private void populateResourcesItems(ArrayList<ResourcesItem> resources, int position, RecyclerViewHolder recyclerViewHolder) {
        recyclerViewHolder.resourceItemsLayout.removeAllViews();
        for (int its = 0; its < resources.size(); its++) {
            PackagesViewItem packagesViewItem = new PackagesViewItem(context);
            if (hasValue(resources.get(its).getResourceName())) {
                packagesViewItem.getResourcesItem().setText(resources.get(its).getResourceName());
                packagesViewItem.getResourcesItem().setSelected(true);
            }

            //add the view item layout to adapter container
            recyclerViewHolder.resourceItemsLayout.addView(packagesViewItem);
        }//for end
    }//populateResourcesItems ends

这是我在回收站视图布局中的线性布局:

            <LinearLayout
            android:weightSum="1"
            android:background="@color/colorPrimary"
            android:id="@+id/resourceItemsLayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_above="@id/subscribeButton"
            android:layout_below="@+id/resourcesTitle"
            android:layout_marginStart="@dimen/_20sdp"
            android:layout_marginTop="@dimen/_5sdp"
            android:layout_marginEnd="@dimen/_20sdp"
            android:layout_marginBottom="@dimen/_20sdp"
            android:orientation="horizontal" />

这是我的 class 在框架布局中弹出视图:

public class PackagesViewItem extends FrameLayout {

    private LinearLayout resourcesViewItemLayout;
    private TextView resourcesItem;

    @SuppressLint("InflateParams")
    public PackagesViewItem(@NonNull Context context) {
        super(context);
        resourcesViewItemLayout = (LinearLayout) LayoutInflater.from(context).inflate(
                R.layout.layout_packages_view_item, null);

        resourcesItem = (TextView) resourcesViewItemLayout.findViewById(R.id.resourcesItem);
        this.addView(resourcesViewItemLayout);
    }//constructor ends

    public LinearLayout getResourcesViewItemLayout() {
        return resourcesViewItemLayout;
    }

    public void setResourcesViewItemLayout(LinearLayout resourcesViewItemLayout) {
        this.resourcesViewItemLayout = resourcesViewItemLayout;
    }

    public TextView getResourcesItem() {
        return resourcesItem;
    }

    public void setResourcesItem(TextView resourcesItem) {
        this.resourcesItem = resourcesItem;
    }
}//class ends

此视图项的布局 class 是:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/resourcesViewItemLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:background="@color/packagesTabTextColorUnselected">

        <TextView
            android:id="@+id/resourcesItem"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:fontFamily="@font/opensans_regular"
            android:gravity="center"
            android:includeFontPadding="false"
            android:text="@string/mobile_bundles_resources"
            android:textColor="@color/colorPrimary"
            android:textSize="@dimen/_12ssp"
            android:visibility="visible" />
    </LinearLayout>

</LinearLayout>

问题是,当项目是单个文本视图时,它没有填充父项,请参见此处:

我想像这些盒子一样实现:

在您的 LinearLayout android:weightSum="1" 中删除并定义此 LinearLayout.LayoutParams:

    val linearLayout : LinearLayout = findViewById(R.id.layout)
    val lp = LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT)
    lp.weight = 1f

然后只应用到布局中添加的视图:

    val textView : TextView = TextView(context)
    textView.setText("Text1")
    textView.height = ...
    //...

    val textView2 : TextView = TextView(context)
    textView2.setText("Text2")
    textView2.height = ...
    //....

    linearLayout.addView(textView, lp)
    linearLayout.addView(textView2, lp)

您的代码中有很多问题,但问题是关于不需要的边距,所以...

不要设置它们

        android:layout_marginStart="@dimen/_20sdp"
        android:layout_marginTop="@dimen/_5sdp"
        android:layout_marginEnd="@dimen/_20sdp"
        android:layout_marginBottom="@dimen/_20sdp"

还删除 android:weightSum="1" 并为创建的 TextView 设置权重,就像 Gabriele Mariotti 建议的那样