Android TextView 不会扩展以匹配父级 [英] Android TextView does not expand to match parent

问题描述

我有一个这样的视图组:

I have a viewgroup like this image:

我不想显示那些空白的文本.例如，假设我没有提示和促销，那么应该只显示注释.当我测试我的程序时，Notes(以红色背景显示)不会扩展以填充父级，尽管其宽度设置为与父级匹配.

I want to not show those texts that are empty. For example, assume that I have no tips and promo then just Notes should be visible. When I test my program Notes (displayed with red background) does not expand to fill parent although its width set to match parent.

任何想法将不胜感激.谢谢.

Any idea would be appreciated. Thanks.

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/llNotesContainer"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/tracking_bg_note"
    android:orientation="horizontal">

    <LinearLayout
        android:id="@+id/llNotes"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="vertical"
        android:padding="8dp">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/tracking_notes"
            android:textColor="@color/tracking_font_address"
            android:textSize="13sp"/>

        <TextView
            android:id="@+id/tvNotes"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:maxLines="2"
            android:ellipsize="end"
            android:textColor="@color/tracking_font_note"
            android:textSize="15sp"
            android:background="@color/red"/>
    </LinearLayout>

    <View
        android:id="@+id/vVerticalSeparator"
        android:layout_width="1dp"
        android:layout_height="match_parent"
        android:layout_marginBottom="8dp"
        android:layout_marginTop="8dp"
        android:background="@color/tracking_separator"/>

    <!-- Tips and Promos -->
    <LinearLayout
        android:id="@+id/llTipsPromos"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="vertical"
        android:gravity="center_vertical">

        <LinearLayout
            android:id="@+id/llTips"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:gravity="center_vertical"
            android:padding="8dp">

            <TextView
                android:layout_width="50dp"
                android:layout_height="wrap_content"
                android:text="@string/tracking_tips"
                android:textColor="@color/tracking_font_address"
                android:textSize="13sp"/>

            <TextView
                android:id="@+id/tvTips"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:textColor="@color/tracking_font_note"
                android:textSize="15sp"
                android:singleLine="true"
                android:ellipsize="end"/>
        </LinearLayout>

        <View
            android:id="@+id/vHorizontalSeparator"
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="@color/tracking_separator"/>

        <LinearLayout
            android:id="@+id/llPromos"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:gravity="center_vertical"
            android:padding="8dp">

            <TextView
                android:layout_width="50dp"
                android:layout_height="wrap_content"
                android:text="@string/tracking_promo"
                android:textColor="@color/tracking_font_address"
                android:textSize="13sp"/>

            <TextView
                android:id="@+id/tvPromos"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:textColor="@color/tracking_font_note"
                android:textSize="15sp"
                android:singleLine="true"
                android:ellipsize="end"/>
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

在代码中，我有一个方法，一旦我想更新 UI，就会调用该方法.方法是:

In the code I have a method that call once I want to update UI. The method is:

private void showHideSeparators()
    {
        boolean notes = false;
        boolean tips = false;
        boolean promos = false;

        if (!TextUtils.isEmpty(this.tvNotes.getText()))
        {
            notes = true;
        }

        if (!TextUtils.isEmpty(this.tvTips.getText()))
        {
            tips = true;
        }

        if (!TextUtils.isEmpty(this.tvPromos.getText()))
        {
            promos = true;
        }

        // We need to consider 8 configurations due to 3 variables
        if (!notes && !tips && !promos)
        {
            this.llNotesContainer.setVisibility(View.GONE);
            return;
        }

        if (!notes && !tips && promos)
        {
            this.llNotesToDriver.setVisibility(View.GONE);
            this.llTips.setVisibility(View.GONE);
            this.vVerticalSeparator.setVisibility(View.GONE);
            this.vHorizontalSeparator.setVisibility(View.GONE);
            return;
        }

        if (!notes && tips && !promos)
        {
            this.llNotesToDriver.setVisibility(View.GONE);
            this.llPromos.setVisibility(View.GONE);
            this.vVerticalSeparator.setVisibility(View.GONE);
            this.vHorizontalSeparator.setVisibility(View.GONE);
            return;
        }

        if (!notes && tips && promos)
        {
            this.llNotesToDriver.setVisibility(View.GONE);
            this.vVerticalSeparator.setVisibility(View.GONE);
            return;
        }

        if (notes && !tips && !promos)
        {
            this.llTips.setVisibility(View.GONE);
            this.llPromos.setVisibility(View.GONE);
            this.vVerticalSeparator.setVisibility(View.GONE);
            this.vHorizontalSeparator.setVisibility(View.GONE);
            return;
        }

        if (notes && !tips && promos)
        {
            this.llTips.setVisibility(View.GONE);
            this.vVerticalSeparator.setVisibility(View.GONE);
            return;
        }

        if (notes && tips && !promos)
        {
            this.llPromos.setVisibility(View.GONE);
            this.vHorizontalSeparator.setVisibility(View.GONE);
            return;
        }

        // this is default situation when all is true
        if (notes && tips && promos)
        {
            return;
        }
    }

我什至试图使我的 textView 无效，但没有任何改变.当我只有笔记时，结果是这样的.

I even tried to invalidate my textView but nothing has changed. Result is like this when I just have notes.

推荐答案

我终于找到了解决这个问题的方法.这是变化:

Finally I found a way to cope with the issue. This is the change:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/llNotesContainer"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/tracking_bg_note"
    android:orientation="horizontal">

    <LinearLayout
        android:id="@+id/llNotes"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="vertical"
        android:padding="8dp">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/tracking_notes"
            android:textColor="@color/tracking_font_address"
            android:textSize="13sp"/>

        <TextView
            android:id="@+id/tvNotes"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textColor="@color/tracking_font_note"
            android:textSize="15sp"
            android:background="@color/red"/>
    </LinearLayout>

    <View
        android:id="@+id/vVerticalSeparator"
        android:layout_width="1dp"
        android:layout_height="match_parent"
        android:layout_marginBottom="8dp"
        android:layout_marginTop="8dp"
        android:background="@color/tracking_separator"/>

    <!-- Tips and Promos -->
    <LinearLayout
        android:id="@+id/llTipsPromos"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:gravity="center_vertical">

        <LinearLayout
            android:id="@+id/llTips"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:gravity="center_vertical"
            android:padding="8dp">

            <TextView
                android:layout_width="50dp"
                android:layout_height="wrap_content"
                android:text="@string/tracking_tips"
                android:textColor="@color/tracking_font_address"
                android:textSize="13sp"/>

            <TextView
                android:id="@+id/tvTips"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:textColor="@color/tracking_font_note"
                android:textSize="15sp"/>
        </LinearLayout>

        <View
            android:id="@+id/vHorizontalSeparator"
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="@color/tracking_separator"/>

        <LinearLayout
            android:id="@+id/llPromos"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:gravity="center_vertical"
            android:padding="8dp">

            <TextView
                android:layout_width="50dp"
                android:layout_height="wrap_content"
                android:text="@string/tracking_promo"
                android:textColor="@color/tracking_font_address"
                android:textSize="13sp"/>

            <TextView
                android:id="@+id/tvPromos"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:textColor="@color/tracking_font_note"
                android:textSize="15sp"/>
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

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