I have the following source code and i can not open my .xml file to edit the widgets. This error appeared from nothing. Could somebody help me?
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF">
<TextView
android:id="@+id/cpf"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="18sp"
android:layout_marginBottom="10dp"
android:textColor="@color/common_signin_btn_light_text_focused"
android:gravity="center"
android:text="@string/cpf" />
<EditText
android:id="@+id/txtCpf"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/cpf"
android:layout_marginBottom="10dp"
android:ems="10"
android:inputType="number"
android:textColor="@color/abc_search_url_text_normal" >
</EditText>
<TextView
android:id="@+id/acontecimento"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="18sp"
android:layout_below="@+id/txtCpf"
android:layout_marginBottom="10dp"
android:gravity="center"
android:textColor="@color/common_signin_btn_light_text_focused"
android:text="@string/acontecimento" />
<EditText
android:id="@+id/txtAcontecimento"
android:inputType="textAutoComplete"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/acontecimento"
android:layout_marginBottom="10dp"
android:ems="10"
android:maxLength="50"
android:textColor="@color/abc_search_url_text_normal" >
</EditText>
<TextView
android:id="@+id/evento"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/txtAcontecimento"
android:layout_marginBottom="10dp"
android:textSize="18sp"
android:gravity="center"
android:textColor="@color/common_signin_btn_light_text_focused"
android:text="@string/selecioneEvento" />
<RelativeLayout
android:id="@+id/relativeGroup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/evento"
android:layout_marginBottom="20dp"
android:gravity="center"
android:orientation="horizontal" >
<HorizontalScrollView
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioGroup
android:id="@+id/radio_group1"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:orientation="horizontal" >
<RadioButton
android:id="@+id/radio_alerta"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="@color/abc_search_url_text_normal"
android:drawableStart="@drawable/alerta"
android:onClick="onRadioButtonClicked" />
<RadioButton
android:id="@+id/radio_arvore"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableStart="@drawable/arvore"
android:onClick="onRadioButtonClicked" />
<RadioButton
android:id="@+id/radio_chuva"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableStart="@drawable/chuva"
android:onClick="onRadioButtonClicked" />
<RadioButton
android:id="@+id/radio_raio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableStart="@drawable/raio"
android:onClick="onRadioButtonClicked" />
<RadioButton
android:id="@+id/radio_temperatura"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableStart="@drawable/temperatura"
android:onClick="onRadioButtonClicked" />
<RadioButton
android:id="@+id/radio_vento"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableStart="@drawable/vento"
android:onClick="onRadioButtonClicked" />
</RadioGroup>
</HorizontalScrollView>
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/relativeGroup"
android:gravity="center"
android:orientation="vertical" >
<Button
android:id="@+id/btRegistrar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:text="@string/registrarEventoCadastro"
android:textColor="@color/common_signin_btn_text_light" />
<Button
android:id="@+id/btVoltar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:text="@string/voltar"
android:textColor="@color/common_signin_btn_text_light" />
</LinearLayout>
The error log:
android.content.res.Resources$NotFoundException Exception details are logged in Window > Show View > Error Log The following classes could not be found: - RadioButton (Change to android.widget.RadioButton, Fix Build Path, Edit XML)