如何解决Android-ImageView的SearchView顶部未显示API> 21
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_default="percent"
app:layout_constraintHeight_percent="0.4"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:elevation="5dp"
android:translationZ="5dp">
<ImageView
android:id="@+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="Book"
android:src="@drawable/bookbackground"
android:layout_centerInParent="true"
android:scaleType="centerCrop"
/>
<SearchView
android:id="@+id/books"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Search Books"
android:layout_marginRight="30dp"
android:layout_marginLeft="30dp"
android:elevation="5dp"
android:translationZ="5dp"
android:layout_centerInParent="true"
/>
</RelativeLayout>
<!--https://pixabay.com/photos/books-students-library-university-1281581/ -->
</androidx.constraintlayout.widget.ConstraintLayout>
解决方法
尝试将背景设置为searchview,您一定会看到您的searchview ... 或选择自定义searchview,以便可以看到
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_default="percent"
app:layout_constraintHeight_percent="0.4"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:elevation="5dp"
android:translationZ="5dp">
<ImageView
android:id="@+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="Book"
android:src="@drawable/bookbackground"
android:layout_centerInParent="true"
android:scaleType="centerCrop"
/>
<SearchView
android:id="@+id/books"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Search Books"
android:layout_marginRight="30dp"
android:layout_marginLeft="30dp"
android:elevation="5dp"
android:translationZ="5dp"
android:background:"your color"
android:layout_centerInParent="true"
/>
</RelativeLayout>
<!--https://pixabay.com/photos/books-students-library-university-1281581/ -->
</androidx.constraintlayout.widget.ConstraintLayout>
,
我认为您做的很少,应该在图片之前定义搜索视图。
,您可以从SearchView中删除CenterInParent
android:layout_centerInParent =“ true”
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