在'android'包中找不到属性'layout_alignParentCenter'的资源标识符

Question

尝试将可滚动导航栏添加到屏幕底部时出现两个错误.我以前从未见过这个错误,到目前为止我找到的答案似乎没有解决我遇到的问题.

错误:

error: No resource identifier found for attribute 'layout_alignParentCenter' in package 'android'   home.xml    /idg/res/layout line 298    Android AAPT Problem
error: No resource identifier found for attribute 'layout_alignParentCenter' in package 'android'   home.xml    /idg/res/layout line 361    Android AAPT Problem

任何输入都非常感谢.

XML来源:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <!-- The main content view -->

    <LinearLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <!-- The rest of your layout (TextView, ScrollView, etc) -->

    </LinearLayout>

    <!-- The navigation drawer -->

    <ListView
        android:id="@+id/left_drawer"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:background="#111"
        android:choiceMode="singleChoice"
        android:divider="@android:color/transparent"
        android:dividerHeight="0dp" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:textStyle="bold" />

    <ScrollView
        android:id="@+id/groupScrollView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <com.google.android.youtube.player.YouTubePlayerView
                android:id="@+id/youtubeplayerview"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >

                <TextView
                    android:id="@+id/textView1a"
                    android:layout_width="0dip"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="Throw &apos;Em Up"
                    android:textAppearance="?android:attr/textAppearanceMedium" />

                <Button
                    android:id="@+id/fav_up_btn1"
                    android:layout_width="27dp"
                    android:layout_height="27dp"
                    android:layout_alignParentTop="true"
                    android:layout_toRightOf="@+id/textView1a"
                    android:background="@drawable/fav_up_btn1"
                    android:gravity="right"
                    android:paddingRight="5dp"
                    android:paddingTop="5dp" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >

                <TextView
                    android:id="@+id/textView2a"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_toLeftOf="@+id/textView3a"
                    android:gravity="left"
                    android:text="by DJ Generic  |"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:textColor="@color/lightgrey" />

                <TextView
                    android:id="@+id/textView3a"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="left"
                    android:text="  100,000 views"
                    android:textAppearance="?android:attr/textAppearanceSmall" />
            </LinearLayout>

            <View
                android:layout_width="1dp"
                android:layout_height="25dp" >
            </View>

            <com.google.android.youtube.player.YouTubeThumbnailView
                android:id="@+id/youtubethumbnailview1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >

                <TextView
                    android:id="@+id/textView1a"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="Bulls On Parade"
                    android:textAppearance="?android:attr/textAppearanceMedium" />

                <Button
                    android:id="@+id/fav_up_btn"
                    android:layout_width="27dp"
                    android:layout_height="27dp"
                    android:layout_alignParentTop="true"
                    android:layout_toRightOf="@+id/textView1a"
                    android:background="@drawable/fav_up_btn1"
                    android:gravity="right"
                    android:paddingRight="5dp"
                    android:paddingTop="5dp" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >

                <TextView
                    android:id="@+id/textView2a"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_toLeftOf="@+id/textView3a"
                    android:gravity="left"
                    android:text="by Rage Against The Machine  |"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:textColor="@color/lightgrey" />

                <TextView
                    android:id="@+id/textView3a"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="left"
                    android:text="  100,000 views"
                    android:textAppearance="?android:attr/textAppearanceSmall" />
            </LinearLayout>

            <View
                android:layout_width="1dp"
                android:layout_height="25dp" >
            </View>

            <com.google.android.youtube.player.YouTubeThumbnailView
                android:id="@+id/youtubethumbnailview2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >

                <TextView
                    android:id="@+id/textView1a"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="Isaac Daniel on CNN with Anderson Cooper"
                    android:textAppearance="?android:attr/textAppearanceMedium" />

                <Button
                    android:id="@+id/fav_up_btn"
                    android:layout_width="27dp"
                    android:layout_height="27dp"
                    android:layout_alignParentTop="true"
                    android:layout_toRightOf="@+id/textView1a"
                    android:background="@drawable/fav_up_btn1"
                    android:gravity="right"
                    android:paddingRight="5dp"
                    android:paddingTop="5dp" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >

                <TextView
                    android:id="@+id/textView2a"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_toLeftOf="@+id/textView3a"
                    android:gravity="left"
                    android:text="by idconex  |"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:textColor="@color/lightgrey" />

                <TextView
                    android:id="@+id/textView3a"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_toRightOf="@+id/textView2a"
                    android:layout_weight="1"
                    android:gravity="left"
                    android:text="  100,000 views"
                    android:textAppearance="?android:attr/textAppearanceSmall" />
            </LinearLayout>

            <View
                android:layout_width="1dp"
                android:layout_height="25dp" >
            </View>

            <com.google.android.youtube.player.YouTubeThumbnailView
                android:id="@+id/youtubethumbnailview3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >

                <TextView
                    android:id="@+id/textView1a"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="Bulls On Parade"
                    android:textAppearance="?android:attr/textAppearanceMedium" />

                <Button
                    android:id="@+id/fav_up_btn"
                    android:layout_width="27dp"
                    android:layout_height="27dp"
                    android:layout_alignParentTop="true"
                    android:layout_toRightOf="@+id/textView1a"
                    android:background="@drawable/fav_up_btn1"
                    android:gravity="right"
                    android:paddingRight="5dp"
                    android:paddingTop="5dp" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >

                <TextView
                    android:id="@+id/textView2a"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_toLeftOf="@+id/textView3a"
                    android:gravity="left"
                    android:text="by Rage Against The Machine  |"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:textColor="@color/lightgrey" />

                <TextView
                    android:id="@+id/textView3a"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="left"
                    android:text="  100,000 views"
                    android:textAppearance="?android:attr/textAppearanceSmall" />
            </LinearLayout>

            <View
                android:layout_width="1dp"
                android:layout_height="25dp" >
            </View>

            <com.google.android.youtube.player.YouTubeThumbnailView
                android:id="@+id/youtubethumbnailview4"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >

                <ImageButton
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentCenter="true"
                    android:layout_weight="1"
                    android:text="@drawable/selstation_up_btn" />

                <TextView
                    android:id="@+id/textView1a"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="Isaac Daniel on CNN with Anderson Cooper"
                    android:textAppearance="?android:attr/textAppearanceMedium" />

                <Button
                    android:id="@+id/fav_up_btn"
                    android:layout_width="27dp"
                    android:layout_height="27dp"
                    android:layout_alignParentTop="true"
                    android:layout_toRightOf="@+id/textView1a"
                    android:background="@drawable/fav_up_btn1"
                    android:gravity="right"
                    android:paddingRight="5dp"
                    android:paddingTop="5dp" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >

                <TextView
                    android:id="@+id/textView2a"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_toLeftOf="@+id/textView3a"
                    android:gravity="left"
                    android:text="by idconex  |"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:textColor="@color/lightgrey" />

                <TextView
                    android:id="@+id/textView3a"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:gravity="left"
                    android:text="  100,000 views"
                    android:textAppearance="?android:attr/textAppearanceSmall" />
            </LinearLayout>

            <RelativeLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:background="#AAFFFFFF" >

                <ImageButton
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentLeft="true"
                    android:src="@drawable/scroll_lt_arrow" />

                <ImageButton
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentCenter="true"
                    android:text="@drawable/selstation_up_btn" />

                <ImageButton
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentRight="true"
                    android:src="@drawable/scroll_rt_arrow" />
            </RelativeLayout>

            <View
                android:layout_width="1dp"
                android:layout_height="5dp" >
            </View>
        </LinearLayout>
    </ScrollView>

</android.support.v4.widget.DrawerLayout>

Answer 1

有一个在没有这样的布局属性LinearLayout也没有RelativeLayout.

• 因为LinearLayout,你需要使用android:gravity="center".
• 对于RelativeLayout,您需要设置android:layout_centerInParent为true.

对于线性布局,您需要确保为视图分配足够的空间(通过其layout_width/height和/或通道layout_gravity),以便将其内容呈现为中心.对于RelativeLayout,容器必须足够大,以便将视图置于其中心是有意义的.