Android Context为空

Context context = BaseApplication.getApp().getApplicationContext();
如果content为null
则：

android:name="com.tcrj.government.application.BaseApplication"

<application
    android:name="com.tcrj.government.application.BaseApplication"
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/Theme.AppCompat">
    <activity
        android:name=".LoginActivity"
        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.tcrj.government.activitys.NewsListActivity" />
</application>