Activity context in Android Plugin

Hello everybody!

I try to show android activity in Unity.

Here is my code:

package com.bestlis.advertismentplugin;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

public class MainActivity extends Activity {

@override
protected void onCreate(Bundle savedInstance){
super.onCreate(savedInstance);
}

public static void ShowAdvert(Activity activity)
{
Intent intent = new Intent(activity, MainActivity.class);
activity.startActivity(intent);
}
}

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
androidrientation="vertical" >

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:textAppearance="?android:attr/textAppearanceLarge" />

</LinearLayout>

Unity

static AndroidJavaClass androidJC;
static AndroidJavaObject androidJO;

public static void ShowAdvertisment()
{
androidJC = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
androidJO = androidJC.GetStatic<AndroidJavaObject>("currentActivity");

var jc = new AndroidJavaClass("com.bestlis.advertismentplugin.MainActivity");
jc.CallStatic("ShowAdvert", androidJO);
}



It works well, but there is only black screen.

If I try to set main_activity with setContentView(R.layout.activity_main) I get error.

E/AndroidRuntime(23542): FATAL EXCEPTION: main
E/AndroidRuntime(23542): java.lang.Error: FATAL EXCEPTION [main]
E/AndroidRuntime(23542): Unity version : 4.5.5f1
E/AndroidRuntime(23542): Device model : LENOVO Lenovo A760
E/AndroidRuntime(23542): Device fingerprint: Lenovo/audi/audi:4.1.2/JZO54K/A760_1_S_2_001_0133_130828:user/release-keys
E/AndroidRuntime(23542):
E/AndroidRuntime(23542): Caused by: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bestlis.first/com.bestlis.advertismentplugin.MainActivity}: android.content.res.Resources$NotFoundException: Resource ID #0x7f030018
E/AndroidRuntime(23542): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2067)
E/AndroidRuntime(23542): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2092)
E/AndroidRuntime(23542): at android.app.ActivityThread.access$600(ActivityThread.java:133)
E/AndroidRuntime(23542): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1203)

How can I show my main_activity.xml?

Thanks!

 

A few things to note (some were not mentioned in the original post):

1. How are you adding your new activity to the Unity project? Are you compiling it as a .jar and adding that somehow?
2. Did you declare your activity in the AndroidManifest.xml ? (you should include one in your Plugins/Android folder
3. Your activity should derive from UnityActivity, and not Activity

Besides that, your C# code should access the main activity, and call the static method on it (after all, if you configure your activity to be the main one, you can directly call the method on it), unless you're trying to show another activity (not really sure from the code).

 

1. Yes, I compiled it into .jar file.
2. Yes, I added activity into manifest file: <activity android:name = "com.bestlis.advertismentplugin.MainActivity" />
3. UnityActivity or UnityPlayerActivity?

 

My bad, I meant UnityPlayerActivity

See more info here: http://docs.unity3d.com/Manual/PluginsForAndroid.html

 

There is nothing in that link what I need, but thanks.
I seen that article, but it didn't help me.

Error gone when i change to UnityPlayerActivity, but no activity showed.

Does anybody have work example?

 

That link shows how to derive from Unity's activity, how to define the AndroidManifest, etc.

We are using a custom activity without any issue.

Steps we've done:

1. Create a .jar containing our new activity (derived from UnityPlayerActivity)
2. Register this in the AndroidManifest.xml
3. Copy the .jar to Assets/Plugins/Android

The first test after performing these steps would be the game actually launching correctly.

Note that any resources you're trying to access will not be included in the .JAR (the error you posted seems to be related to some missing resources, e.g: Android UI layouts, etc).

 

Sorry, I fortgot to execute method.
After change Activity to UnityPlayerActivity error remained.

 

What else do you have in your Assets/Plugins/Android and in your manifest?

It is looking for some resource that does not exist in your Unity project.

 

http://prntscr.com/6kd0l1

I have only jar file and AndroidManifest.

<?xml version="1.0" encoding="utf-8"?>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="com.bestlis.first"
android:installLocation="preferExternal"
android:theme="@android:style/Theme.NoTitleBar"
android:versionCode="1"
android:versionName="1.0">
<supports-screens
android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:xlargeScreens="true"
android:anyDensity="true"/>

<application
android:icon="@drawable/app_icon"
android:label="@String/app_name"
android:debuggable="true">
<activity android:name="com.unity3d.player.UnityPlayerActivity"
android:launchMode="singleTask"
android:label="@String/app_name"
android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.unity3d.player.UnityPlayerProxyActivity"
android:launchMode="singleTask"
android:label="@String/app_name"
android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen">
</activity>
<activity android:name="com.unity3d.player.UnityPlayerNativeActivity"
android:launchMode="singleTask"
android:label="@String/app_name"
android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen">
<meta-data android:name="android.app.lib_name" android:value="unity" />
<meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="false" />
</activity>

<activity android:name = "com.bestlis.advertismentplugin.MainActivity" />
</application>
</manifest>

 

When I export to jar file I check all resources

http://prntscr.com/6kd0yb

 

JARs don't contain any resources, you can peek inside to see... If it contains, I don't think Android knows how to get it (the resources are being built by the android build process, it doesn't look for any resources inside the jar).

Also, there are issues with how you declare things in the manifest:

* At the top, the package you list is not the one containing your MainActivity.
* The UnityPlayerActivity is marked as LAUNCHER. This should be your MainActivity.

You should define it something like this:

<activity android:name="com.bestlis.advertismentplugin.MainActivity" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen" android:label="@String/app_name" android:screenOrientation="landscape" android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen" android:launchMode="singleTask">
<meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="true" />
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

 

Resources included http://prntscr.com/6kd800

When I changed launch activity, I get error while compliling:

Error building Player: CommandInvokationFailure: Failed to re-package resources. See the Console for details.
C:\Program Files\Android-SDK-windows\sdk\build-tools\21.1.2\aapt.exe package --auto-add-overlay -v -f -m -J gen -M AndroidManifest.xml -S "res" -I "C:/Program Files/Android-SDK-windows/sdk/platforms/android-21\android.jar" -F bin/resources.ap_

stderr[
AndroidManifest.xml:17: error: Error: No resource found that matches the given name (at 'label' with value '@String/app_name').

 

We never had anything like that, what Unity version are you using ?

 

I found solution http://students.ceid.upatras.gr/~be...1/27_create_unity_vuforia_android_plugin.html

Man wrote:

Note 1: We create the layout programmatically because otherwise i get Resource not found exception. This needs to be checked but i haven’t done it yet.

So he had the same error with layout file...

Does anybody know, how to include layout file into jar?

Note: my launch activity com.unity3d.player.UnityPlayerActivity

 

4.5.5.f1