Initial commit of our new Android app to demo Skia.

platform_tools/android/apps/viewer/src/main/java/org/skia/viewer/ViewerActivity.java

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 package org.skia.viewer;
 
-import android.app.ActionBar;
+import android.app.Activity;
 import android.os.Bundle;
-import android.provider.Settings;
-import android.view.View;
-import android.view.WindowManager;
+import android.view.Surface;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
 
-public class ViewerActivity extends android.app.NativeActivity {
-    static {
-        System.loadLibrary("skia_android");
+public class ViewerActivity extends Activity implements SurfaceHolder.Callback {
+    private SurfaceView mView;
+    private ViewerApplication mApplication;
+
+    private native void onSurfaceCreated(long handle, Surface surface);
+    private native void onSurfaceChanged(long handle, Surface surface);
+    private native void onSurfaceDestroyed(long handle);
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        mApplication = (ViewerApplication) getApplication();
+        mView = (SurfaceView) findViewById(R.id.surfaceView);
+        mView.getHolder().addCallback(this);
     }
-    
+
     @Override
-    public void onCreate(Bundle savedInstanceState) 
-    {
-        super.onCreate(savedInstanceState);
-        ActionBar ab = this.getActionBar();
-        ab.hide();
+    public void surfaceCreated(SurfaceHolder holder) {
+        if (mApplication.getNativeHandle() != 0) {
+            onSurfaceCreated(mApplication.getNativeHandle(), holder.getSurface());
+        }
+    }
+
+    @Override
+    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
+        if (mApplication.getNativeHandle() != 0) {
+            onSurfaceChanged(mApplication.getNativeHandle(), holder.getSurface());
+        }
+    }
+
+    @Override
+    public void surfaceDestroyed(SurfaceHolder holder) {
+        if (mApplication.getNativeHandle() != 0) {
+            onSurfaceDestroyed(mApplication.getNativeHandle());
+        }
     }
 }