Android: New ActivityLauncher (jogamp.android-launcher.apk)

ActivityLauncher provides delegating Activities, allowing the user to:

  - daisy chain custom APK classes and native libraries to the classpath

  - name one custom activity which gets delegated to, the downstream activity

Overview:

  [User:a1] -- (usr-data) --> [Launcher] -> [User:a2] + using [other packages..]

[User APK]   - The user provided APK
[JogAmp APK] - JogAmp APKs

[User:a1]    - The initial user activity, which starts the [Launcher].
               Providing data to [Launcher]: [User:a2], [User APK]
               Resides in [User APK]

[User:a2]    - The actual downstream 'real' activity, spoiled w/ full fledged ClassLoader
               having access to all packages as requested, ie. [User APK], ..
               Resides in [User APK]

[Launcher]   - The launcher activity.
               Gets called by [User:a1].
               Creates a new ClassLoader, daisy chainging all requested APKs.
               Instantiates [User:a2] w/ new ClassLoader.
               Delegates all calls to [User:a2].
               Resides in [JogAmp APK].

1 files changed, 231 insertions, 0 deletions

diff --git a/src/java/jogamp/android/launcher/ActivityLauncher.java b/src/java/jogamp/android/launcher/ActivityLauncher.java
new file mode 100644
index 0000000..04c898e
--- /dev/null
+++ b/src/java/jogamp/android/launcher/ActivityLauncher.java
@@ -0,0 +1,231 @@
+/**
+ * Copyright 2011 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.android.launcher;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import android.app.Activity;
+import android.content.Context;
+import android.net.Uri;
+import android.os.Bundle;
+import android.widget.TextView;
+import android.util.Log;
+
+public class ActivityLauncher extends Activity {
+   static final String TAG = "NEWTLauncherActivity";
+   TextView tv = null;
+   Method mOnCreate, mOnDestroy, mOnPause, mOnRestart, mOnResume, 
+          mOnStart, mOnStop, mSetIsInvokedByExternalActivity;
+   Class<?> activityClazz = null;
+   Object activityObject  = null;
+   
+   @Override
+   public void onCreate(Bundle savedInstanceState) {
+       Log.d(TAG, "onCreate - S");
+       super.onCreate(savedInstanceState);
+       
+       final Uri uri = getIntent().getData();
+       final LauncherUtil.DataSet data = LauncherUtil.DataSet.create(uri);
+       data.setSystemProperties();
+
+       ClassLoader cl = ClassLoaderUtil.createJogampClassLoaderSingleton(this, data.getPackages());
+       if(null != cl) {
+           try {
+               activityClazz = Class.forName(data.getActivityName(), true, cl);
+               Log.d(TAG, "Activity Clazz "+activityClazz);
+               activityObject = createInstance(activityClazz, null);
+               Log.d(TAG, "Activity Object "+activityObject);
+               mOnCreate = activityClazz.getMethod("onCreate", Bundle.class);
+               mOnDestroy = activityClazz.getMethod("onDestroy");
+               mOnPause = activityClazz.getMethod("onPause");
+               mOnRestart = activityClazz.getMethod("onRestart");
+               mOnResume = activityClazz.getMethod("onResume");
+               mOnStart = activityClazz.getMethod("onStart");
+               mOnStop = activityClazz.getMethod("onStop");
+               mSetIsInvokedByExternalActivity = activityClazz.getMethod("setIsInvokedByExternalActivity", Activity.class);
+           } catch (Exception e) {
+               Log.d(TAG, "error: "+e, e);
+               throw new RuntimeException(e);
+           }
+       }
+
+       if( null == mOnCreate || null == mOnDestroy || null == mOnPause ||
+           null == mOnRestart || null == mOnResume ||
+           null == mSetIsInvokedByExternalActivity ) {
+           RuntimeException e = new RuntimeException("XXX - incomplete method set");
+           Log.d(TAG, "error: "+e, e);
+           throw e;
+       }
+       
+       callMethod(activityObject, mSetIsInvokedByExternalActivity, this);
+       
+       callMethod(activityObject, mOnCreate, savedInstanceState);
+       Log.d(TAG, "onCreate - X");
+   }
+   
+   @Override
+   public void onStart() {
+     Log.d(TAG, "onStart - S");
+     callMethod(activityObject, mOnStart);
+     super.onStart();
+     Log.d(TAG, "onStart - X");
+   }
+     
+   @Override
+   public void onRestart() {
+     Log.d(TAG, "onRestart - S");
+     callMethod(activityObject, mOnRestart);
+     super.onRestart();
+     Log.d(TAG, "onRestart - X");
+   }
+
+   @Override
+   public void onResume() {
+     Log.d(TAG, "onResume - S");
+     callMethod(activityObject, mOnResume);
+     super.onResume();
+     Log.d(TAG, "onResume - X");
+   }
+
+   @Override
+   public void onPause() {
+     Log.d(TAG, "onPause - S");
+     callMethod(activityObject, mOnPause);
+     super.onPause();
+     Log.d(TAG, "onPause - X");
+   }
+
+   @Override
+   public void onStop() {
+     Log.d(TAG, "onStop - S");
+     callMethod(activityObject, mOnStop);
+     super.onStop();  
+     Log.d(TAG, "onStop - X");
+   }
+
+   @Override
+   public void onDestroy() {
+     Log.d(TAG, "onDestroy - S");
+     callMethod(activityObject, mOnDestroy);
+     super.onDestroy();  
+     finish();
+     Log.d(TAG, "onDestroy - X");
+   }   
+
+   @Override
+   public void finish() {
+     Log.d(TAG, "finish - S");
+     super.finish();  
+     Log.d(TAG, "finish - X");
+   }   
+
+  /**
+   * @throws JogampRuntimeException if the instance can not be created.
+   */
+  public static final Object createInstance(Class<?> clazz, Class<?>[] cstrArgTypes, Object ... cstrArgs) 
+      throws RuntimeException
+  {
+    return createInstance(getConstructor(clazz, cstrArgTypes), cstrArgs);
+  }
+
+  public static final Object createInstance(Constructor<?> cstr, Object ... cstrArgs) 
+      throws RuntimeException
+  {
+    try {
+        return cstr.newInstance(cstrArgs);
+    } catch (Exception e) {
+      Throwable t = e;
+      if (t instanceof InvocationTargetException) {
+        t = ((InvocationTargetException) t).getTargetException();
+      }
+      if (t instanceof Error) {
+        throw (Error) t;
+      }
+      if (t instanceof RuntimeException) {
+        throw (RuntimeException) t;
+      }
+      throw new RuntimeException("can not create instance of "+cstr.getName(), t);
+    }
+  }
+  
+    /**
+     * @throws JogampRuntimeException if the constructor can not be delivered.
+     */
+    protected static final Constructor<?> getConstructor(Class<?> clazz, Class<?> ... cstrArgTypes) 
+        throws RuntimeException {
+        try {
+            if(null == cstrArgTypes) {
+                cstrArgTypes = zeroTypes;
+            }
+            return clazz.getDeclaredConstructor(cstrArgTypes);
+        } catch (NoSuchMethodException ex) {
+            throw new RuntimeException("Constructor: '" + clazz + "(" + asString(cstrArgTypes) + ")' not found", ex);
+        }
+    }
+    
+    protected static final Class<?>[] zeroTypes = new Class[0];
+
+    protected static final String asString(Class<?>[] argTypes) {
+        StringBuffer args = new StringBuffer();
+        boolean coma = false;
+        if(null != argTypes) {
+            for (int i = 0; i < argTypes.length; i++) {
+                if(coma) {
+                     args.append(", ");
+                }
+                args.append(argTypes[i].getName());
+                coma = true;
+            }
+        }
+        return args.toString();
+    }
+    
+  protected static final Object callMethod(Object instance, Method method, Object ... args)
+      throws RuntimeException
+  {
+    try {
+        return method.invoke(instance, args);
+    } catch (Exception e) {
+      Throwable t = e;
+      if (t instanceof InvocationTargetException) {
+        t = ((InvocationTargetException) t).getTargetException();
+      }
+      if (t instanceof Error) {
+        throw (Error) t;
+      }
+      if (t instanceof RuntimeException) {
+        throw (RuntimeException) t;
+      }
+      throw new RuntimeException("calling "+method+" failed", t);
+    }
+  }
+
+
+}