小编anu*_*dha的帖子

我正在Date Time为我的Android应用程序使用材料选择器.但我想在一个对话框中组合Date和Time选择器.

我正在关注这一个.但是我需要选择日期选择之后的时间.

请建议可行的方法来做这个.

我的项目运行成功.但突然间,我在构建完成后收到以下错误.

谁能告诉我这里发生了什么？我不知道这个错误.我该如何解决？

Error:A problem occurred configuring project ':app'.
> Could not resolve all dependencies for configuration ':app:_debugCompile'.
   > Could not find com.android.support:cardview-v7:23.2.1.
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.pom
         https://jcenter.bintray.com/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.jar
         https://repo1.maven.org/maven2/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.pom
         https://repo1.maven.org/maven2/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.jar
         file:/opt/android-sdk-linux/extras/android/m2repository/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.pom
         file:/opt/android-sdk-linux/extras/android/m2repository/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.jar
         file:/opt/android-sdk-linux/extras/google/m2repository/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.pom
         file:/opt/android-sdk-linux/extras/google/m2repository/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.jar
     Required by:
         FinderMaterial:app:unspecified
   > Could not find com.android.support:support-v4:23.2.1.
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/support/support-v4/23.2.1/support-v4-23.2.1.pom
         https://jcenter.bintray.com/com/android/support/support-v4/23.2.1/support-v4-23.2.1.jar
         https://repo1.maven.org/maven2/com/android/support/support-v4/23.2.1/support-v4-23.2.1.pom
         https://repo1.maven.org/maven2/com/android/support/support-v4/23.2.1/support-v4-23.2.1.jar
         file:/opt/android-sdk-linux/extras/android/m2repository/com/android/support/support-v4/23.2.1/support-v4-23.2.1.pom
         file:/opt/android-sdk-linux/extras/android/m2repository/com/android/support/support-v4/23.2.1/support-v4-23.2.1.jar
         file:/opt/android-sdk-linux/extras/google/m2repository/com/android/support/support-v4/23.2.1/support-v4-23.2.1.pom
         file:/opt/android-sdk-linux/extras/google/m2repository/com/android/support/support-v4/23.2.1/support-v4-23.2.1.jar
     Required by:
         FinderMaterial:app:unspecified > com.facebook.android:facebook-android-sdk:4.11.0
   > Could not find com.android.support:cardview-v7:23.2.1.
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.pom
         https://jcenter.bintray.com/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.jar
         https://repo1.maven.org/maven2/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.pom
         https://repo1.maven.org/maven2/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.jar
         file:/opt/android-sdk-linux/extras/android/m2repository/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.pom
         file:/opt/android-sdk-linux/extras/android/m2repository/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.jar
         file:/opt/android-sdk-linux/extras/google/m2repository/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.pom
         file:/opt/android-sdk-linux/extras/google/m2repository/com/android/support/cardview-v7/23.2.1/cardview-v7-23.2.1.jar
     Required …

我想放置TextView在GoogleMap我的Android应用程序.请参阅我目前为止编写的以下代码.当我运行它时,TextView它不会出现在GoogleMap.

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".activity.HomeActivity"
    tools:showIn="@layout/app_bar_main">

    <LinearLayout
        android:id="@+id/validity"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:orientation="vertical"
        android:layout_alignParentBottom="true">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="You are not a paid user."/>
    </LinearLayout>

    <fragment
        android:id="@+id/home_map"
        android:name="com.google.android.gms.maps.SupportMapFragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="false"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_alignParentBottom="true" />

</RelativeLayout>

请建议我解决此问题的可能解决方案.