【发布时间】：2015-09-12 19:01:29
【问题描述】：
我正在尝试实现新的 Material Design 浮动 EditText，但我遇到了错误。因此，我正在使用 Google 于 2015 年 5 月 29 日推出的最新“Android 支持设计库”。按照说明，我正在通过 build.gradle 文件编译该库，如下所示：
compile 'com.android.support:design:22.2.+'
虽然 EditText 会在输入第一个字符后隐藏提示文本，但您现在可以将其包装在 TextInputLayout 中，使提示文本成为 EditText 上方的浮动标签，确保用户永远不会丢失他们的上下文正在进入。
所以，这是我在布局 xml 文件上的代码，有问题的代码的 id 为 android:id="@+id/viewTest" 和 android:id="@+id/fNameTest:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/mainFragmentViewGroup"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:focusable="true"
android:focusableInTouchMode="true">
<ScrollView
android:id="@+id/scrollableContents"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/background">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="80dp"
android:paddingLeft="16dp"
android:paddingRight="16dp">
<view
android:layout_width="wrap_content"
android:layout_height="wrap_content"
class="android.support.design.widget.TextInputLayout"
android:id="@+id/viewTest"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true" >
<EditText
android:id="@+id/fNameTest"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:hint="First Name"/>
</view>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/roiInitialInvestmentHelpImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:background="?android:attr/selectableItemBackgroundBorderless"
android:paddingBottom="2dp"
android:paddingEnd="@dimen/activity_horizontal_margin"
android:src="@drawable/ic_currency_usd" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_toEndOf="@+id/roiInitialInvestmentHelpImageView"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-medium"
android:labelFor="@+id/roiInitialInvestmentEditText"
android:paddingTop="@dimen/activity_double_vertical_margin"
android:text="Initial Investment"
android:textColor="@color/accent"
android:textSize="20sp" />
<EditText
android:id="@+id/roiInitialInvestmentEditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:digits="0123456789.,"
android:inputType="numberDecimal"
android:text=""
android:textColor="@color/primary_text_default_material_light" />
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/roiReturnAmountHelpImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:background="?android:attr/selectableItemBackgroundBorderless"
android:paddingBottom="2dp"
android:paddingEnd="@dimen/activity_horizontal_margin"
android:src="@drawable/ic_currency_usd" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_toEndOf="@+id/roiReturnAmountHelpImageView"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-medium"
android:labelFor="@+id/roiReturnAmountEditText"
android:paddingTop="@dimen/activity_double_vertical_margin"
android:text="Return Amount"
android:textColor="@color/accent"
android:textSize="20sp" />
<EditText
android:id="@+id/roiReturnAmountEditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:digits="0123456789.,"
android:inputType="numberDecimal"
android:text=""
android:textColor="@color/primary_text_default_material_light" />
</LinearLayout>
</RelativeLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="32dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-medium"
android:text="Period"
android:textColor="@color/accent"
android:textSize="20sp" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="72dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:width="64dp"
android:text="Years"
android:textColor="@color/secondary_text_material_light"
android:textSize="16sp" />
<SeekBar
android:id="@+id/roiYearSeekBar"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:max="10" />
<TextView
android:id="@+id/roiYearTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:width="40dp"
android:gravity="center"
android:text="0"
android:textColor="@color/secondary_text_material_light"
android:textSize="16sp" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="72dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:width="64dp"
android:text="Months"
android:textColor="@color/secondary_text_material_light"
android:textSize="16sp" />
<SeekBar
android:id="@+id/roiMonthSeekBar"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:max="11" />
<TextView
android:id="@+id/roiMonthTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:width="40dp"
android:gravity="center"
android:text="0"
android:textColor="@color/secondary_text_material_light"
android:textSize="16sp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</ScrollView>
</RelativeLayout>
我得到的错误如下：
还有以下 LogCat 消息：
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.ActivityThread.access$800(ActivityThread.java:151)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.os.Handler.dispatchMessage(Handler.java:102)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.os.Looper.loop(Looper.java:135)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.ActivityThread.main(ActivityThread.java:5254)
06-26 00:41:33.018: E/AndroidRuntime(11085): at java.lang.reflect.Method.invoke(Native Method)
06-26 00:41:33.018: E/AndroidRuntime(11085): at java.lang.reflect.Method.invoke(Method.java:372)
06-26 00:41:33.018: E/AndroidRuntime(11085): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
06-26 00:41:33.018: E/AndroidRuntime(11085): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
06-26 00:41:33.018: E/AndroidRuntime(11085): Caused by: android.view.InflateException: Binary XML file line #25: Error inflating class android.support.design.widget.TextInputLayout
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.view.LayoutInflater.createView(LayoutInflater.java:633)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
06-26 00:41:33.018: E/AndroidRuntime(11085): at uk.co.codepix.calculator.ui.fragments.RoiInputCalcFrag.onCreateView(RoiInputCalcFrag.java:42)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.Fragment.performCreateView(Fragment.java:2053)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:894)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.BackStackRecord.run(BackStackRecord.java:834)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1452)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.Activity.performStart(Activity.java:6005)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2288)
06-26 00:41:33.018: E/AndroidRuntime(11085): ... 10 more
06-26 00:41:33.018: E/AndroidRuntime(11085): Caused by: java.lang.reflect.InvocationTargetException
06-26 00:41:33.018: E/AndroidRuntime(11085): at java.lang.reflect.Constructor.newInstance(Native Method)
06-26 00:41:33.018: E/AndroidRuntime(11085): at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.view.LayoutInflater.createView(LayoutInflater.java:607)
06-26 00:41:33.018: E/AndroidRuntime(11085): ... 24 more
06-26 00:41:33.018: E/AndroidRuntime(11085): Caused by: java.lang.RuntimeException: Failed to resolve attribute at index 18
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.content.res.TypedArray.getColor(TypedArray.java:401)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.support.design.widget.CollapsingTextHelper.setCollapsedTextAppearance(CollapsingTextHelper.java:166)
06-26 00:41:33.018: E/AndroidRuntime(11085): at android.support.design.widget.TextInputLayout.<init>(TextInputLayout.java:106)
06-26 00:41:33.018: E/AndroidRuntime(11085): ... 27 more
知道为什么会发生这些错误吗？
【问题讨论】：
-
甚至在使用设计库中的任何 api 之前，您是否能够使用 gradle 成功构建？
-
嗨@Radix...是的，它编译正确。
-
@karaokyo 你给了我正确的答案。谢谢。我会在下面发布。
标签： android xml android-edittext material-design android-design-library