Aspose.Slides for Android via Java: Initialization of a Presentation Failed

xjf · December 27, 2022, 7:27am

maven
implementation (
group: ‘com.aspose’,
name: ‘aspose-slides’,
version: ‘22.10’,
classifier: ‘android.via.java’)

And after new Presentation, it crash.
The code:

Presentation pre = new Presentation();

And output log:
12-27 15:30:40.605 23274 23274 D AndroidRuntime: Shutting down VM
12-27 15:30:40.609 23274 23274 E AndroidRuntime: FATAL EXCEPTION: main
12-27 15:30:40.609 23274 23274 E AndroidRuntime: Process: com.newskyer.draw, PID: 23274
12-27 15:30:40.609 23274 23274 E AndroidRuntime: java.lang.ExceptionInInitializerError
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at java.lang.Class.classForName(Native Method)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at java.lang.Class.forName(Class.java:454)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at java.lang.Class.forName(Class.java:379)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.internal.mh.for.if(Unknown Source:181)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.ms.System.int.byte(Unknown Source:24)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.ms.System.int.do(Unknown Source:99)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.ms.System.int.do(Unknown Source:22)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.ms.System.int.do(Unknown Source:6)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.are.(Unknown Source:7)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.GroupShape.(Unknown Source:50)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.BaseSlide.(Unknown Source:63)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.MasterSlide.(Unknown Source:0)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.adj.do(Unknown Source:8)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.am3.do(Unknown Source:179)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.Presentation.(Unknown Source:110)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.newskyer.draw.PadActivity.check(PadActivity.kt:983)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.newskyer.draw.PadActivity.onCreate(PadActivity.kt:963)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:8488)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:8461)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1343)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4602)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4842)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:113)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:149)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:103)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2928)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:117)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.os.Looper.loopOnce(Looper.java:205)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.os.Looper.loop(Looper.java:293)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:9596)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:586)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1204)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: Caused by: java.lang.NullPointerException: Attempt to read from field ‘com.aspose.slides.ms.backend.System.Drawing.int com.aspose.slides.ms.backend.System.Drawing.GraphicsEnv.for’ on a null object reference
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.ms.backend.System.Drawing.GraphicsEnv.int(Unknown Source:4)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.ms.backend.System.Drawing.int.do(Unknown Source:0)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.internal.ft.class.(Unknown Source:3)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: at com.aspose.slides.internal.ft.class.(Unknown Source:5)
12-27 15:30:40.609 23274 23274 E AndroidRuntime: … 33 more

andrey.potapov · December 27, 2022, 1:13pm

@xjf,
Thank you for contacting support.

Please share the following additional data and information:

simple project that reproduces the error (you can zip the files and upload the archive here)
OS version on which the code was executed

xjf · December 27, 2022, 1:34pm

Thank you for response.
OS version: Android 11.
And I think it is not related to system version.
I try these:

Create a new Android project, it works.
Integrated to my old project with same codes and same device. But it crash. I’m confused

Both of all, only have one line code.
Presentation pre = new Presentation();

andrey.potapov · December 27, 2022, 2:35pm

@xjf,
I’ve added a ticket with ID SLIDESANDROID-470 to our issue-tracking system. Our development team will investigate the case. We will inform you of any progress.

Please also share information about the JDK version in your app.

andrey.potapov · December 27, 2022, 3:15pm

@xjf,
Our developers have looked into the issue you are experiencing.

Unfortunately, we don’t know what you are doing specifically. But this problem says that we cannot get data about our “services”:
\META-INF\services\com.aspose.slides.ms.backend.System.Drawing.GraphicsEnv
Could you please look into it in your old project?

xjf · December 27, 2022, 3:21pm

Okay, the JKD version is 11.0.2.
And what’s \META-INF\services\com.aspose.slides.ms.backend.System.Drawing.GraphicsEnv?

xjf · December 27, 2022, 3:24pm

Unzip the release apk, I can find META-INF/services/com.aspose.slides.ms.backend.System.Drawing.GraphicsEnv

andrey.potapov · December 27, 2022, 5:18pm

@xjf,
I’ve forwarded your question to our developers. We will answer you ASAP.

xjf · December 28, 2022, 2:50am

Thanks, I found the reason. I set android:sharedUserId in AndroidManitest.xml, but I don’t found the solution yet.

andrey.potapov · December 28, 2022, 7:19am

@xjf,

This is the folder inside our jar. Could you check whether this folder is ignored in your project?

xjf · December 28, 2022, 8:19am

No, I can see this file in apk package file.
I try to remove android:sharedUserId from AndroidManitest.xml, it works.
But I need android:sharedUserId, because this app already published.
do you have any idea for this?

andrey.potapov · December 28, 2022, 8:59am

@xjf,
Could you please share the AndroidManitest.xml file?

xjf · December 28, 2022, 9:21am

OfficeTeset.zip (5.8 MB)

I upload the sample project. It will crash when run, but when remove the android:sharedUserId="com.office.test" from AndroidManifest.xml, it works.

and the AndroidManifest.xml

    <?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
android:sharedUserId="com.office.test"
package="com.example.officeteset">

        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
        <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
        <uses-permission android:name="android.permission.INTERNET" />
        <application
            android:allowBackup="true"
            android:icon="@mipmap/ic_launcher"
            android:label="@string/app_name"
            android:roundIcon="@mipmap/ic_launcher_round"
            android:requestLegacyExternalStorage="true"
            android:supportsRtl="true"
            android:theme="@style/Theme.OfficeTeset">
            <activity android:name=".MainActivity"
                android:exported="true">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />

                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
        </application>

    </manifest>

xjf · December 28, 2022, 11:53am

I found a hack way to solve this issue
I try to use hack code for initialize GraphicsEnv, and it works.

andrey.potapov · December 28, 2022, 1:12pm

@xjf,
If I understand correctly, the issue has already been resolved on your end. Could you please confirm?

xjf · December 28, 2022, 11:31pm

Yes, but it is not a normal solution.

andrey.potapov · December 29, 2022, 8:49am

@xjf,
Thank you for the files and additional information. I’ve forwarded it to our developers.

andrey.potapov · December 29, 2022, 10:47am

@xjf,
Please try to add the following string to the application tag (before the activity tag):

<service android:enabled="true" android:name="com.aspose.slides.ms.backend.System.Drawing.GraphicsEnv" />

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    android:sharedUserId="com.office.test"
    package="com.example.officeteset">

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:requestLegacyExternalStorage="true"
        android:supportsRtl="true"
        android:theme="@style/Theme.OfficeTeset">

        <service android:enabled="true" android:name="com.aspose.slides.ms.backend.System.Drawing.GraphicsEnv" /> <-- Slides service

        <activity android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

Here is a link with more information about the service element:

xjf · December 29, 2022, 11:08am

I try to add the following :

<service android:enabled="true" android:name="com.aspose.slides.ms.backend.System.Drawing.GraphicsEnv" />

And it is not work.

But add the following before Presentation, it works.

Class<GraphicsEnv> clz = GraphicsEnv.class;
try {
    Field gdo = clz.getDeclaredField("do");
    gdo.setAccessible(true);
    gdo.set(new AndroidGraphicsEnvironment(), new AndroidGraphicsEnvironment());
} catch (NoSuchFieldException e) {
} catch (IllegalAccessException e) {
}

andrey.potapov · December 29, 2022, 1:41pm

@xjf,
Unfortunately, we don’t have another idea to help you yet.