Question

我为ListView构建行布局并遇到问题。

目前我的布局如下：

XML：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout_ROW"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@null"
      >

    <ImageView
        android:id="@+id/imageView_albumart"
        android:layout_alignParentTop="true"
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:layout_marginRight="5dp"
        android:background="@color/black"
        android:visibility="visible"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <TextView
        android:id="@+id/txt_titel"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@+id/txt_artist"
        android:layout_alignTop="@+id/imageView_albumart"
        android:layout_toRightOf="@+id/imageView_albumart"
        android:singleLine="true"
        android:text="Titel"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:layout_marginTop="18dp"
        android:textSize="17dp"
        android:layout_toLeftOf="@+id/imageView_eq_animation"
        android:layout_alignLeft="@+id/txt_artist"
        android:layout_alignStart="@+id/txt_artist" />

    <TextView
        android:id="@+id/txt_artist"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/imageView_albumart"
        android:layout_marginBottom="16dp"
        android:layout_toRightOf="@+id/imageView_albumart"
        android:text="Artist"
        android:singleLine="true"
        android:textSize="13dp"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:layout_toLeftOf="@+id/imageView_eq_animation" />

    <ImageView
        android:id="@+id/imageView_eq_animation"
        android:layout_width="30dp"
        android:layout_height="70dp"
        android:src="@drawable/ic_equalizer1_white_36dp"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:visibility="gone"
        android:layout_alignParentLeft="@+id/txt_artist"
        android:layout_alignBottom="@+id/imageView_albumart" />

    <TextView
        android:id="@+id/txt_length"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="0:00"
        android:singleLine="true"
        android:textSize="10dp"
        android:visibility="gone"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:layout_below="@+id/txt_titel"
        android:layout_alignParentRight="true" />

</RelativeLayout>

现在，当我想将imageView_albumart的可见性更改为android:visibility="gone"时，我得到了以下结果：

你能看到我的格式问题在哪里吗？我只是想隐藏imgAlbumart所以Title和Artist TextViews是独立的。

Answer 1

将视图的可见性设置为 View.INVISIBLE ，而不是 View.GONE

Answer 2

尝试这样，您可以使用RelativeLayout和LinearLayout的组合设计UI。在Google中搜索Android中的设计模式和布局使用情况。你会得到想法。

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

<ImageView
    android:id="@+id/imageView_albumart"
    android:layout_width="70dp"
    android:layout_height="70dp"
    android:layout_margin="5dp"
    android:background="@android:color/darker_gray"
    android:visibility="visible" />

<RelativeLayout
    android:id="@+id/RelativeLayout_ROW"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="5dp"
    android:background="@null">

    <TextView
        android:id="@+id/txt_titel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="20dp"
        android:singleLine="true"
        android:text="Titel"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:textSize="17dp" />

    <TextView
        android:id="@+id/txt_artist"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/txt_titel"
        android:layout_marginBottom="16dp"
        android:singleLine="true"
        android:text="Artist"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textSize="13dp" />

    <ImageView
        android:id="@+id/imageView_eq_animation"
        android:layout_width="30dp"
        android:layout_height="70dp"
        android:layout_alignBottom="@+id/txt_artist"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:src="@drawable/ic_game"
        android:visibility="gone" />

    <TextView
        android:id="@+id/txt_length"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/imageView_eq_animation"
        android:singleLine="true"
        android:text="0:00"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textSize="10dp"
        android:visibility="gone" />

</RelativeLayout>
</LinearLayout>

Answer 3

是的，您的布局有问题将您的布局更改为：

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

<ImageView
    android:id="@+id/imageView_albumart"
    android:layout_width="70dp"
    android:layout_height="70dp"
    android:layout_marginRight="5dp"
    android:background="#000"
    android:visibility="gone"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true" />

<TextView
    android:id="@+id/txt_titel"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_toRightOf="@+id/imageView_albumart"
    android:text="Titel"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:layout_marginTop="18dp"
    android:textSize="17sp"
    android:layout_toLeftOf="@+id/imageView_eq_animation"
    />

<TextView
    android:id="@+id/txt_artist"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@+id/imageView_albumart"
    android:layout_marginBottom="16dp"
    android:layout_toRightOf="@+id/imageView_albumart"
    android:text="Artist"
    android:singleLine="true"
    android:layout_below="@+id/txt_titel"
    android:textSize="13dp"
    android:textAppearance="?android:attr/textAppearanceSmall"
    android:layout_toLeftOf="@+id/imageView_eq_animation" />

<ImageView
    android:id="@+id/imageView_eq_animation"
    android:layout_width="30dp"
    android:layout_height="70dp"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:visibility="visible"
    android:layout_alignParentLeft="@+id/txt_artist"
    android:layout_alignBottom="@+id/imageView_albumart" />

<TextView
    android:id="@+id/txt_length"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="0:00"
    android:singleLine="true"
    android:textSize="10dp"
    android:visibility="gone"
    android:textAppearance="?android:attr/textAppearanceSmall"
    android:layout_below="@+id/txt_titel"
    android:layout_alignParentRight="true" />

它会做..

更改ImageView的可见性后Textview消失

3 个答案: