Android java.lang.IllegalArgumentException: unable to find native library: main

I found several projects today that demonstrate Android ndk programming. This project

I am trying to start a DroidBlaster project . I have compiled all native libraries without error. Here's the result:

I made a few small changes:

1). Added tag application

to AndroidManifest.xml

variantandroid:hasCode="true"

2). I expanded from my own activity and loaded all libraries into a block static

.

I did this because without these changes, Android cannot find the library libdroidblaster.so

that was declared in AndroidManifest.xml

(Here is the code from the author) :

<activity
            android:name="android.app.NativeActivity"
            android:label="@string/app_name" >
            <meta-data
                android:name="android.app.lib_name"
                android:value="droidblaster" />

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

      

        
        
        
      

    

Mine now AndroidManifest.xml

looks like this:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.demo.droidblaster"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="22" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme"
        android:hasCode="true">

        <activity android:name=".MainActivity"
                  android:label="@string/app_name"
                  android:configChanges="orientation|keyboardHidden">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

        <activity
            android:name="android.app.NativeActivity"
            android:label="@string/app_name" >
            <meta-data
                android:name="android.app.lib_name"
                android:value="droidblaster" />
        </activity>
    </application>

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

</manifest>

      

        
        
        
      

    

And my new activity :

public class MainActivity extends NativeActivity {
    static {
        System.loadLibrary("irrlicht");
        System.loadLibrary("droidblaster");
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }
}

      

        
        
        
      

    

When I try to run the application, I get this error:

06-05 12: 56: 26.523 11528-11528 / com.demo.droidblaster E / AndroidRuntime: FATAL EXCEPTION: main Process: com.demo.droidblaster, PID: 11528 java.lang.RuntimeException: Unable to start Activity ComponentInfo {com. demo.droidblaster / com.demo.droidblaster.MainActivity}: java.lang.IllegalArgumentException: Unable to find native library: main at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:2658) at android.app.ActivityThread.handleLaunchActivity (ActivityThread .java: 2723) at android.app.ActivityThread.access $ 900 (ActivityThread.java:172) at android.app.ActivityThread $ H.handleMessage (ActivityThread.java:1422) on android.os.Handler.dispatchMessage (Handler.java : 102) at android.os.Looper.loop (Looper.java:145) at android.app.ActivityThread.main (ActivityThread.java:5832) at java.lang.reflect.Method.invoke (native method) at java.lang.reflect.Method.invoke (Method.java:372) at com.android.internal.os. ZygoteInit $ MethodAndArgsCaller.run (ZygoteInit.java:1399) at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1194) Caused by: java.lang.IllegalArgumentException: Cannot find native library: main in android.app. NativeActivity.onCreate (NativeActivity.java:170) at com.demo.droidblaster.MainActivity.onCreate (MainActivity.java:17) at android.app.Activity.performCreate (Activity.java:6221) at android.app.Instrumentation.callActivityOnCreate (Instrumentation.java:1119) at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:2611) at android.app.ActivityThread.handleLaunchActivity (ActivityThread.java:2723) at android.app.ActivityThread.access $ 900 (ActivityThread.java:172) at android.app.ActivityThread $ H.handleMessage (ActivityThread.java:1422) on android.os. Handler.dispatchMessage (Handler.java:102) at android.os.Looper.loop (Looper.java:145) at android.app.ActivityThread.main (ActivityThread.java:5832) at java.lang.reflect.Method.invoke (native method) at java.lang.reflect.Method.invoke (Method.java:372) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run (ZygoteInit.java:1399) at com.android.internal.os .ZygoteInit.main (ZygoteInit.java:1194)dispatchMessage (Handler.java:102) at android.os.Looper.loop (Looper.java:145) at android.app.ActivityThread.main (ActivityThread.java:5832) at java.lang.reflect.Method.invoke (native method) in java.lang.reflect.Method.invoke (Method.java:372) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run (ZygoteInit.java:1399) at com.android.internal.os.ZygoteInit .main (ZygoteInit.java:1194)dispatchMessage (Handler.java:102) at android.os.Looper.loop (Looper.java:145) at android.app.ActivityThread.main (ActivityThread.java:5832) at java.lang.reflect.Method.invoke (native method) in java.lang.reflect.Method.invoke (Method.java:372) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run (ZygoteInit.java:1399) at com.android.internal.os.ZygoteInit .main (ZygoteInit.java:1194)

So the reason is this:

java.lang.IllegalArgumentException: Unable to find native library: main

      

        
        
        
      

    

I cannot find a solution to solve this problem.

Does anyone know how to fix this?