Android 相对布局循环依赖错误

问题描述

我正在尝试创建自定义布局，但我正在努力使其正常工作，我收到错误消息相对布局中不能存在圆形依赖项"

Hi im trying to create a custom layout but i'm struggling to get it to work properly i'm getting an error "circluar dependencies cannot exist in Relative layout"

这是我试图在布局方面实现的目标，然后用数据填充每个文本字段.

heres what im trying to acheive in termas of layout and then fill each text field with data.

date                number
name   score - score  name
scorers              scorers

这是我的尝试

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="@color/white"
    android:paddingTop="30dp"
    android:paddingBottom="30dp" >



    <TextView
        android:id="@+id/TextView04"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:layout_below="@+id/HomeScore"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"
        android:text="-"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="@color/blue"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/AwayTeam"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/TextView04"
        android:layout_alignBottom="@+id/TextView04"
        android:layout_alignParentRight="true"
        android:layout_marginRight="22dp"
        android:gravity="left"
        android:text="Small Text"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="@color/blue"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/HomeTeam"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/TextView04"
        android:layout_alignBottom="@+id/TextView04"
        android:layout_toRightOf="@+id/HomeScore"
        android:gravity="right"
        android:text="Small Text"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="@color/blue"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/Attendance"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/AwayTeam"
        android:layout_alignTop="@+id/HomeScore"
        android:text="Small Text"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <TextView
        android:id="@+id/Division"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/textView1"
        android:layout_toRightOf="@+id/HomeScore"
        android:text="Small Text"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <TextView
        android:id="@+id/AwayScore"
        android:layout_width="20dp"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/TextView04"
        android:layout_alignBottom="@+id/TextView04"
        android:layout_toRightOf="@+id/TextView04"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="@color/blue"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/HomeScore"
        android:layout_width="20dp"
        android:layout_height="wrap_content"

        android:layout_alignBottom="@+id/TextView04"
        android:layout_marginRight="15dp"
        android:layout_toLeftOf="@+id/TextView04"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="@color/blue"
        android:textStyle="bold" />

</RelativeLayout>

这里是错误

06-06 14:42:44.348: E/AndroidRuntime(1167): java.lang.IllegalStateException: Circular dependencies cannot exist in RelativeLayout
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.widget.RelativeLayout$DependencyGraph.getSortedViews(RelativeLayout.java:1272)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.widget.RelativeLayout.sortChildren(RelativeLayout.java:281)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:303)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.view.View.measure(View.java:8526)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.widget.ListView.measureScrapChild(ListView.java:1153)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.widget.ListView.measureHeightOfChildren(ListView.java:1266)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.widget.ListView.onMeasure(ListView.java:1127)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.view.View.measure(View.java:8526)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3224)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.widget.TableLayout.measureChildBeforeLayout(TableLayout.java:456)
06-06 14:42:44.348: E/AndroidRuntime(1167):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:386)

推荐答案

好吧，这里有几个问题:

Well, you have a few problems here:

1. TextView04 声明了 android:layout_below="@+id/HomeScore" 和 android:layout_centerVertical="true"，其中冲突

1. TextView04 declares android:layout_below="@+id/HomeScore" and android:layout_centerVertical="true", which conflict

AwayTeam 声明 android:layout_alignBaseline="@+id/TextView04" 和 android:layout_alignBottom="@+id/TextView04"，其中冲突

AwayTeam declares android:layout_alignBaseline="@+id/TextView04" and android:layout_alignBottom="@+id/TextView04", which conflict

HomeTeam 声明 android:layout_alignBaseline="@+id/TextView04" 和 android:layout_alignBottom="@+id/TextView04"，其中冲突

HomeTeam declares android:layout_alignBaseline="@+id/TextView04" and android:layout_alignBottom="@+id/TextView04", which conflict

AwayScore 声明 android:layout_alignBaseline="@+id/TextView04" 和 android:layout_alignBottom="@+id/TextView04"，其中冲突

AwayScore declares android:layout_alignBaseline="@+id/TextView04" and android:layout_alignBottom="@+id/TextView04", which conflict

正如 Samir 指出的那样，您的循环依赖中至少有一个位于 TextView04 和 HomeScore 之间.TextView04 说它在HomeScore 之下，HomeScore 说它的底部与TextView04 的底部对齐.但是，我上面提到的其他一些也可能会产生循环依赖.确保两个小部件不会试图在同一轴上相互约束(如 TextView04 和 HomeScore).

As Samir points out, at least one of your circular dependencies is between TextView04 and HomeScore. TextView04 says it is to be below HomeScore, and HomeScore says its bottom is aligned with the bottom of TextView04. However, some of the other ones I note above may also create circular dependencies. Ensure that two widgets do not try to constrain on each other on the same axis (as in TextView04 and HomeScore).

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