06-02 11:49:53.676: E/AndroidRuntime(12974): FATAL EXCEPTION: main
06-02 11:49:53.676: E/AndroidRuntime(12974): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.*****.Main}: java.lang.SecurityException: Permission Denial: reading com.android.providers.contacts.ContactsProvider2 uri content://com.android.contacts/contacts from pid=12974, uid=10110 requires android.permission.READ_CONTACTS, or grantUriPermission()

在AndroidManifest.xml添加如下权限：

    <uses-permission android:name="android.permission.READ_CONTACTS" />

出现下面的告警信息：
<uses-permission> tag appears after <application> tag

原因：<uses-permission> 需放在application前面
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >