小编Erd*_*dem的帖子

我已经实现了自定义TextView,然后我需要更改其文本大小以供将来使用.在那一步,我决定使用style.xml和attr.xml进行textSize自定义

但是,当我的自定义布局膨胀时,我收到运行时错误.与我为了自定义而更改的部件相关的错误.

这是我实现的代码片段.

attr.xml

<declare-styleable name="FieldLayout">
    <attr name="right_detail_text_size" format="dimension"/>
</declare-styleable>

styles.xml

 <style name="TextViewRightDetail">
    <item name="android:textSize">?attr/right_detail_text_size</item>
 </style>

layout_field_detailed.xml

    <com.my.view.TextViewFont
        android:id="@+id/layout_fielddetailed_textview_rightdetail"
        style="@style/TextViewRightDetail" />

layout_implementation.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:iattr="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <com.my.view.FieldLayoutDetailed
        android:id="@+id/fieldlayoutdetailed_example"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        iattr:right_detail_text_size="16sp"/>
</LinearLayout>

FieldLayoutDetailed.java

public FieldLayoutDetailed(Context context, AttributeSet attrs) {
    super(context, attrs);
    TypedArray array = context.obtainStyledAttributes(attrs,R.styleable.FieldLayout, 0, 0);
    LayoutInflater.from(context).inflate(R.layout.layout_field_deailed, this, true);

我在运行时遇到错误

...
Caused by: java.lang.RuntimeException: Failed to resolve attribute at index 12
at android.content.res.TypedArray.getDimensionPixelSize(TypedArray.java:569)
at android.widget.TextView.<init>(TextView.java:1003)
at android.widget.TextView.<init>(TextView.java:632)
at android.widget.TextView.<init>(TextView.java:628)
at com.my.view.TextViewFont.<init>(TextViewFont.java:29)
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at …