Error inflating class android widget checkbox

Question

This is my xml infected code..

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:background="#331c57"
        android:orientation="vertical" >

        <LinearLayout
            android:id="@+id/linearLayout1"
            android:layout_width="wrap_content"
            android:layout_height="60dp"
            android:layout_centerVertical="true"
            android:gravity="center"
            android:orientation="vertical" >

            <ImageView
                android:id="@+id/imageView1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:layout_marginRight="10dp"
                android:src="@drawable/gappshapp" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/linearLayout3"
            android:layout_width="50dp"
            android:layout_height="60dp"
            android:layout_alignParentRight="true"
            android:gravity="center"
            android:orientation="vertical" >

            <ImageView
                android:id="@+id/imageView3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true"
                android:src="@drawable/threedots" />
        </LinearLayout>
    </RelativeLayout>

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

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="35dp"
            android:gravity="center"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/textView1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Activation"
                android:textColor="@android:color/background_dark"
                android:textSize="20sp"
                android:textStyle="bold" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="80dp"
            android:layout_marginLeft="20dp"
            android:layout_marginRight="20dp"
            android:layout_marginTop="25dp"
            android:background="#331c57"
            android:gravity="center"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/textView2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:layout_marginRight="10dp"
                android:gravity="center"
                android:text="An Activation Code was Sent to your Mobile Device, Enter the code below"
                android:textColor="@android:color/background_light"
                android:textSize="15sp" />
        </LinearLayout>

        <EditText
            android:id="@+id/editText1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:layout_marginRight="20dp"
            android:layout_marginTop="20dp"
            android:gravity="center"
            android:text="250210"
            android:textColor="@android:color/background_dark" >
        </EditText>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:layout_marginTop="25dp"
        android:orientation="horizontal" >

        <CheckBox
            android:id="@+id/chkIos"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="I agree with the Terms and Conditions" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="30dp"
        android:gravity="center"
        android:orientation="vertical" >

        <ImageView
            android:id="@+id/imageView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/continuebtn" />
    </LinearLayout>

</LinearLayout>

it crashes when i changes my theme

i also uses the appcompat-v7 as a library and android support v7 appcompat and android support v4 jar as library but still it crash

this is my xml code,there is not code in activity,i just working on xml file and and it crashes at checkbox during inflating class android widget checkbox...

i don't know whats happening here, i need solution for it.

Answer 1

I had the same problem today.
If I use the following:

import android.support.v7.app.AppCompatActivity;

and try and use import android.widget.CheckBox;
with a standard checkbox:
private CheckBox mSendSMSNotification;

it also fails with the same error.

Converting to:
import android.support.v7.widget.AppCompatCheckBox;
private AppCompatCheckBox mSendSMSNotification;

and also in XML:
<android.support.v7.widget.AppCompatCheckBox android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Send SMS Notification when Reports Emailed" android:id="@+id/checkBoxSendSMSNotification" android:layout_row="3" android:layout_column="0" android:layout_columnSpan="2" />

resolves the error, but I dont know why. My min API 16, target API 23