Question

我不太确定自己在做什么错。

我希望广告在屏幕的底部，因此我想缩小scrollview或顶层linearlayout，以便所有内容都可以在屏幕上显示

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".DisplayMagic">

    <LinearLayout

            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:layout_alignParentBottom="true"
            >
        <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/notice"
                android:text="@string/notice"
                android:textColor="@color/colorPrimary"
                android:textSize="18sp"/>
        <ScrollView
                android:id="@+id/magic_container"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginEnd="8dp"
                android:layout_marginRight="8dp"
                android:layout_marginLeft="8dp"
                android:layout_marginStart="8dp"
                app:layout_constraintTop_toBottomOf="@id/notice"
                app:layout_constraintBottom_toTopOf="@id/adView">
            <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    app:layout_constraintTop_toTopOf="parent"
                    app:layout_constraintBottom_toBottomOf="parent">
                <TextView
                        android:id="@+id/text_uri_message"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:textSize="18sp"
                        android:textStyle="bold"
                        android:text="@string/test_value"
                        app:layout_constraintTop_toTopOf="parent"
                        app:layout_constraintBottom_toTopOf="@id/tags_box"/>
                <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:id="@+id/tags_box"
                        app:layout_constraintTop_toBottomOf="@id/text_uri_message"
                        app:layout_constraintBottom_toBottomOf="parent"/>
            </LinearLayout>
        </ScrollView>
        <com.google.android.gms.ads.AdView
                xmlns:ads="http://schemas.android.com/apk/res-auto"
                android:id="@+id/adView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                ads:adSize="SMART_BANNER"
                ads:adUnitId="ca-app-pub-3940256099942544/6300978111"
                app:layout_constraintBottom_toBottomOf="parent">
        </com.google.android.gms.ads.AdView>

    </LinearLayout>

</android.support.constraint.ConstraintLayout>

在添加AdView之前，此方法已经奏效，但是我不确定在哪里弄乱。

在这种情况下，@string/test_value只是很长的伪文本，以迫使scrollview变大：

    Ads are an effective and easy way to earn revenue from your apps. Google AdMob is
    a smart monetization platform for apps that helps you to maximize revenue from ads and in-app purchases. More
    than 1 million apps use Google AdMob to generate a reliable revenue stream, with more than $1 billion paid to
    developers. All you need to do is sign up for Google AdMob, and then use the Google Mobile Ads SDK to place ads
    in your app with just a few lines of code. You get paid quickly in your local currency (where available), with
    no wire fees charged by Google AdMob. Also, Google AdMob’s integration with Google Play services pushes
    automatic performance improvements to Android apps without additional SDK changes.Well-placed, well-targeted ads
    in apps, particularly free apps, can achieve good click-through rates while preserving the app’s user
    experience. It’s easy to add the code to deliver ads, and Google AdMob takes care of the rest: finding and
    delivering relevant ads to your app from any of Google’s advertiser demand across Google AdMob, Google Ads, and
    the Authorized buyers. This range of advertising sources—coupled with free, industry-leading mediation—achieves
    high CPMs and excellent fill rates, automatically helping to improve your earnings.

wrap_content是否不应该调整scrollview的大小，还是我在某处的布局中犯了错误？

Answer 1

您可以尝试以下cml代码：我正在将约束布局与滚动视图和具有属性匹配约束的adview一起使用，这使scrollview可以针对其自身设置其自身链接约束。

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >

<TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/notice"
        android:text="@string/notice"
        android:textColor="@color/colorPrimary"
        android:textSize="18sp" app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent" 
app:layout_constraintTop_toTopOf="parent"/>
<ScrollView
        android:id="@+id/magic_container"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintBottom_toTopOf="@id/adView"
        android:layout_marginTop="8dp" 
app:layout_constraintTop_toBottomOf="@+id/notice"
        app:layout_constraintStart_toStartOf="parent" 
app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintVertical_bias="0.0" 
app:layout_constraintHorizontal_bias="0.0">

    <android.support.constraint.ConstraintLayout android:layout_width="match_parent"

android:layout_height="wrap_content">
        <TextView
                android:id="@+id/text_uri_message"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:textSize="18sp"
                android:textStyle="bold"
                android:text="@string/gen_text"
                android:layout_marginEnd="8dp" 
app:layout_constraintEnd_toEndOf="parent"
                android:layout_marginStart="8dp" 
app:layout_constraintStart_toStartOf="@+id/tags_box"
                app:layout_constraintTop_toTopOf="parent"/>
        <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/tags_box"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent" android:layout_marginTop="8dp"
                app:layout_constraintTop_toBottomOf="@+id/text_uri_message"
                app:layout_constraintBottom_toBottomOf="parent" android:layout_marginBottom="8dp"
                app:layout_constraintHorizontal_bias="0.0" app:layout_constraintVertical_bias="1.0"/>
    </android.support.constraint.ConstraintLayout>
</ScrollView>
<com.google.android.gms.ads.AdView
        xmlns:ads="http://schemas.android.com/apk/res-auto"
        android:id="@+id/adView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        ads:adSize="SMART_BANNER"
        ads:adUnitId="ca-app-pub-3940256099942544/6300978111"
        app:layout_constraintBottom_toBottomOf="parent" 
ads:layout_constraintStart_toStartOf="parent"
        ads:layout_constraintEnd_toEndOf="parent">
</com.google.android.gms.ads.AdView>
</android.support.constraint.ConstraintLayout>

Answer 2

您需要ConstraintLayout的复杂性吗？如果我对您的理解正确，则可以通过将布局简化为线性布局并使用布局权重来确定ScrollView的大小来实现所需的目标，即

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".DisplayMagic">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/notice"
            android:text="@string/notice"
            android:textColor="@color/colorPrimary"
            android:textSize="18sp"/>

        <ScrollView
            android:id="@+id/magic_container"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:layout_marginEnd="8dp"
            android:layout_marginRight="8dp"
            android:layout_marginLeft="8dp"
            android:layout_marginStart="8dp">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical" >
                <TextView
                    android:id="@+id/text_uri_message"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:textSize="18sp"
                    android:textStyle="bold"
                    android:text="@string/test_value"/>
                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:id="@+id/tags_box" />
            </LinearLayout>
        </ScrollView>
        <com.google.android.gms.ads.AdView
            android:id="@+id/adView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:adSize="SMART_BANNER"
            app:adUnitId="ca-app-pub-3940256099942544/6300978111" >
        </com.google.android.gms.ads.AdView>

</LinearLayout>

这会在顶部显示一个通知，在底部显示一个广告，其余部分用于滚动视图。

Answer 3

<ScrollView
      android:layout_height="0dp"

就这样改变

如何调整scrollview的大小，以使所有内容都适合屏幕显示？

3 个答案: