Question

我在活动中遇到图像问题。出于某种原因，ImageView在Android工作室预览中可见，但在我在设备或模拟器上构建时却看不到。在任何其他活动中，它正常工作。我不是android的专家，我无法弄清楚这是问题...

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:id="@+id/activity_map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="MapsActivity"
    android:backgroundTint="@color/ColoreSfondo">


    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/map"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_toLeftOf="@+id/numeroRisultatiMappa"
        android:layout_toStartOf="@+id/numeroRisultatiMappa"
        android:contentDescription="@string/logoDescription"
        app:srcCompat="@drawable/logo" />

    <fragment xmlns:map="http://schemas.android.com/apk/res-auto"
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.SupportMapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/buttonMapToHome"
        android:layout_below="@+id/numeroRisultatiMappa"
        tools:context="MapsActivity" />


    <Button
        android:text="@string/buttonhome"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/buttonMapToHome"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:background="@drawable/my_button_bg"
        android:textColor="@android:color/white"
        android:textStyle="normal|bold" />

    <Button
        android:text="@string/toList"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/buttonMapToList"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_toEndOf="@+id/buttonMapToHome"
        android:layout_toRightOf="@+id/buttonMapToHome"
        android:background="@drawable/my_button_bg"
        android:textColor="@android:color/white"
        android:textStyle="normal|bold" />


    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:id="@+id/numeroRisultatiMappa"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:textAppearance="@style/TextAppearance.AppCompat.Title"
        android:textSize="24sp"
        android:textAlignment="center"
        android:layout_toEndOf="@+id/buttonMapToHome"
        android:layout_toRightOf="@+id/buttonMapToHome" />



</RelativeLayout>



Any suggestion?

Answer 1

请使用以下代码替换您的片段代码。

<fragment
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.SupportMapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/buttonMapToHome"
        android:layout_below="@+id/imageView2"
        tools:context="MapsActivity"/>

同样在imageview中，请将app:srcCompat="@drawable/logo"更改为android:src="@drawable/app_logo"

imageview在android中不起作用

1 个答案: