小编mvr*_*rck的帖子

我创建了一个简单的Android库应用程序,只有一个包含TextView的活动.它工作正常,但当我在另一个应用程序中将其标记为库和引用时,当我尝试使用findViewById(R.id.welcome_textview)获取文本视图时,它会出错.

它生成了R.java,但是在我引用库的第二个应用程序中,它不包含id字段.以下是生成的两个R.java文件: -

图书馆应用

    /* AUTO-GENERATED FILE.  DO NOT MODIFY.
 *
 * This class was automatically generated by the
 * aapt tool from the resource data it found.  It
 * should not be modified by hand.
 */

package com.example.mylibrary;

public final class R {
    public static final class attr {
    }
    public static final class drawable {
        public static final int icon=0x7f020000;
    }
    public static final class id {
        public static final int welcome_textview=0x7f050000;
    }
    public static final class layout …

我在使用ScrollView时遇到问题.出于某种奇怪的原因,它隐藏了要显示在顶部的内容.我试着给予保证金,填充等,但似乎没有任何效果.这是我的布局:

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    android:orientation="vertical" android:background="@drawable/background">
    <LinearLayout android:layout_width="fill_parent"
        android:layout_height="wrap_content" android:background="@drawable/titlebar"
        android:id="@+id/titlebar">
        <TextView android:layout_width="fill_parent" android:id="@+id/textView1"
            android:layout_height="fill_parent" android:layout_gravity="center"
            android:gravity="center" android:textColor="@color/white"
            android:textSize="20dip" android:text="Help"></TextView>
    </LinearLayout>
    <ScrollView android:layout_height="wrap_content" android:id="@+id/scrollView1"
        android:layout_width="fill_parent">
        <LinearLayout android:orientation="vertical" android:id="@+id/linearLayout2"
            android:gravity="center" android:layout_width="fill_parent"
            android:layout_gravity="center" android:layout_height="fill_parent"
            android:paddingLeft="10dip" android:paddingRight="5dip">
            <ImageView android:layout_height="wrap_content"
                android:src="@drawable/icon" android:layout_marginTop="10dip"
                android:id="@+id/help_icon" android:layout_width="fill_parent"
                android:layout_marginBottom="15dip"></ImageView>
            <TextView android:layout_height="wrap_content"
                android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed dapibus venenatis suscipit.\n\nCras lacus sem, cursus a dictum sed, condimentum quis urna. Ut vel metus lorem, quis semper lacus. Suspendisse eu urna massa, a …