My app crashes when start new activity

public void btnLogin_OnClick(View view) {
        startActivity(new Intent(MainActivity.this, PersonInfo.class));
    }

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="تسجيل الدخول"
            android:id="@+id/btnLogin"
            android:layout_marginTop="72dp"
            android:textColor="#ffffff"
            android:layout_below="@+id/txtPassword"
            android:layout_centerHorizontal="true"
            android: önClick="btnLogin_OnClick" /
>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.hsa.ispcheck"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.hsa.ispcheck.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.hsa.ispcheck.PersonInfo"
            android:label="@string/title_activity_person_info" >
        </activity>
    </application>

</manifest>