我是 Android 新手,我可能有一个愚蠢/愚蠢的问题。我有一个活动,我想在其中动态创建多个输入字段。输入字段的数量由用户定义。
因为输入是样式化的并且由 2 个元素组成,并且不想每次都创建这些元素,因为元素有多个每次都相同的参数。这就是为什么我只为这两个元素创建了一个 XML 文件,我想在我的程序中使用它们来创建输入。
查看输入.xml
<?xml version="1.0" encoding="utf-8"?>
<merge 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"
android:orientation="vertical"
tools:parentTag="androidx.constraintlayout.widget.ConstraintLayout">
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/textInputLayoutTableName"
style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:layout_marginStart="20dp"
android:layout_marginEnd="10dp"
android:hint="@string/create_table_name"
android:inputType="text"
app:boxStrokeColor="@color/colorAccent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:placeholderText="@string/create_table_table_name_placeholder"
app:startIconTintMode="src_in">
<com.google.android.material.textfield.TextInputEditText
android:id="@+id/textInputName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text"
android:text="" />
</com.google.android.material.textfield.TextInputLayout>
</merge>
我的目标 XML (Activity_create_table_column_names.xml)看起来像这样:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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"
tools:context=".ui.createtable.CreateTableColumnNamesActivity">
<LinearLayout
android:id="@+id/columnNameInputContainer"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="start"
android:orientation="vertical"
android:padding="20dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/create_table_column_names"
android:textStyle="bold" />
<!-- HERE -->
</LinearLayout>
我写的地方<!-- HERE -->
我希望我所有的输入字段都是。
我一开始只显示一个输入:
private fun initLayout() {
val container = findViewById<LinearLayout>(R.id.columnNameInputContainer)
val inflater = applicationContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
val view = inflater.inflate(R.layout.view_input, LinearLayout(this))
container.addView(view)
}
但我得到了以下异常:
Caused by: java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.MaterialComponents (or a descendant).
at com.google.android.material.internal.ThemeEnforcement.checkTheme(ThemeEnforcement.java:243)
at com.google.android.material.internal.ThemeEnforcement.checkMaterialTheme(ThemeEnforcement.java:217)
at com.google.android.material.internal.ThemeEnforcement.checkCompatibleTheme(ThemeEnforcement.java:145)
at com.google.android.material.internal.ThemeEnforcement.obtainTintedStyledAttributes(ThemeEnforcement.java:115)
at com.google.android.material.textfield.TextInputLayout.<init>(TextInputLayout.java:458)
at com.google.android.material.textfield.TextInputLayout.<init>(TextInputLayout.java:417)
我的样式.xml
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.MaterialComponents.DayNight">
...
</style>
</resources>
我究竟做错了什么?这甚至是我应该编程这样的东西的正确方法吗?
Edit:
Android.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="de.hsos.ma.adhocdb">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:appComponentFactory="@string/app_name"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:replace="android:appComponentFactory">
<activity
android:name=".ui.createtable.CreateTableColumnNamesActivity"
android:parentActivityName=".ui.homescreen.MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ui.createtable.CreateTableActivity"
android:parentActivityName=".ui.homescreen.MainActivity" />
<activity
android:name=".ui.homescreen.TestTableActivity"
android:parentActivityName=".ui.homescreen.MainActivity">
<!--
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
-->
</activity>
<activity
android:name=".ui.TableShow.TableShowActivity"
android:parentActivityName=".ui.homescreen.MainActivity" />
<activity android:name=".ui.tablelist.LayoutTableListItem" />
<activity android:name=".ui.homescreen.MainActivity">
</activity>
</application>
</manifest>