RelativeLayout 中不能存在循环依赖？

Question

Exception raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error Log Exception raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error LogException raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error Log

块引用

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="${relativePackage}.${activityClass}" 
android:id="@+id/layout">


<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentEnd="true"
    android:layout_alignParentStart="true"
    android:layout_alignParentTop="true"
    android:layout_marginTop="19dp"
    android:background="@drawable/gradient_style"
    android:gravity="center"
    android:text="@string/accelerometer_text"
    android:textAppearance="?android:attr/textAppearanceLarge" />

<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentStart="true"
    android:layout_below="@+id/textView1"
    android:layout_marginTop="61dp"
    android:text="@string/x_axis"
    android:background="@drawable/gradient_xyz"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
    android:id="@+id/x_axis"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@+id/textView2"
    android:layout_alignParentEnd="true"
    android:layout_marginStart="18dp"
    android:layout_toEndOf="@+id/textView2"
    android:background="#f00"
    android:text=""
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="#00f" />

<TextView
    android:id="@+id/textView3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentStart="true"
    android:layout_below="@+id/textView2"
    android:layout_marginTop="27dp"
    android:layout_toStartOf="@+id/y_axis"
    android:background="@drawable/gradient_xyz"
    android:text="@string/y_axis"
    android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
    android:id="@+id/y_axis"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/textView4"
    android:layout_alignStart="@+id/x_axis"
    android:layout_alignParentEnd="true"
    android:background="#0f0"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="#f00" />

<TextView
    android:id="@+id/textView4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentStart="true"
    android:layout_alignEnd="@+id/textView3"
    android:layout_below="@+id/textView3"
    android:layout_marginTop="33dp"
    android:background="@drawable/gradient_xyz"
    android:text="@string/z_axis"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
    android:id="@+id/z_axis"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/textView4"
    android:layout_alignBottom="@+id/textView4"
    android:layout_alignStart="@+id/y_axis"
    android:layout_alignParentEnd="true"
    android:background="#00f"
    android:text=""
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="#0f0" />

Answer 1

你不应该在视图之间添加循环依赖-

从您的代码中删除一行 -

remove - `android:layout_above="@+id/textView4"`

俯视图 -

<TextView
android:id="@+id/y_axis"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/textView4"
android:layout_alignStart="@+id/x_axis"
android:layout_alignParentEnd="true"
android:background="#0f0"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#f00" />

Answer 2

相对布局中的循环引用不允许或无效。

例如，当视图 B 是 layout_below 视图 A 时，视图 A 不能再引用视图 B 在其下方，alignRight 等。这也可以存在于多个视图之间：A 引用 B 引用 C。在由于循环依赖，场景 C 无法引用 A。

在此处获取更多详细信息..

Exception raised during rendering: Circular dependencies cannot exist in RelativeLayout Exception details are logged in Window > Show View > Error Log

Answer 3

问题是您的对齐方式不明确，换句话说，在您的 .xml 中的某处，您告诉编译器用相互矛盾的布局做 2 件事。您告诉 y_axis TextView 位于上方 textView4 而同时您告诉 textView4 位于下方 textView3。这两个都不可能是真的，因此正在创建循环依赖，其中一个需要更改。

RelativeLayout 中不能存在循环依赖？

Circular dependencies cannot exist in RelativeLayout?

error-handling

layout

android

circular-dependency