android - 包含 .aar 文件后，cordova 上的应用程序崩溃

Question

我正在使用cordova框架开发一个android应用程序，在我的应用程序中我必须添加一个第三方sdk（.aar文件）。该sdk在android本机应用程序上运行良好，但在我的应用程序（使用cordova构建）中，它因空指针异常而崩溃，它说textview实例为空，因为它不为空。我仍然无法发现问题。在这方面的任何帮助将不胜感激。

堆栈跟踪：

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setVisibility(int)' on a null object reference
 at com.project.sdk.fragments.CameraImageFragment.onCreateView(CameraImageFragment.java:108)
 at android.support.v4.app.Fragment.performCreateView(Fragment.java:2439)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1460)
        at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1784)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1852)
        at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:802)
        at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2625)
        at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2411)

CameraImageFragment.java：

private TextView camera_instructions;
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(layout.activity_camera, container, false);
    this.mContext = this.getActivity();
    this.camera_instructions = (TextView)view.findViewById(id.camera_instructions);
    return view;
}

private void setInstructionAfterClick(int type) {
    this.camera_instructions.setVisibility(0);
    //Rest of the code

}

camera_camera.xml：

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/camera_screen_background">

<TextView
            android:id="@+id/camera_instructions"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/take_photo"
            app:layout_constraintTop_toBottomOf="@+id/camera_image"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            android:layout_marginStart="15dp"
            android:layout_marginEnd="15dp"
            android:layout_below="@id/camera_image"
            android:textColor="@color/charcol_blue"
            android:textStyle="bold"
            android:textSize="17dp"
            android:visibility="gone"/>

</RelativeLayout>

标签： androidcordovanullpointerexceptiontextviewcrash