Adding Camera Activity

src/com/phonegap/demo/CameraPreview.java

@@ -0,0 +1,143 @@
+package com.phonegap.demo;
+
+import java.io.IOException;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.graphics.PixelFormat;
+import android.hardware.Camera;
+import android.net.Uri;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.MenuItem;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
+import android.view.SurfaceHolder.Callback;
+
+public class CameraPreview extends Activity implements SurfaceHolder.Callback{
+
+    private static final String TAG = "CameraApiTest";
+    Camera mCamera;
+    boolean mPreviewRunning = false;
+
+    public void onCreate(Bundle icicle)
+    {
+        super.onCreate(icicle);
+
+        Log.e(TAG, "onCreate");
+
+        getWindow().setFormat(PixelFormat.TRANSLUCENT);
+
+        setContentView(R.layout.preview);
+        mSurfaceView = (SurfaceView)findViewById(R.id.surface);
+
+        mSurfaceHolder = mSurfaceView.getHolder();
+        mSurfaceHolder.addCallback(this);
+        mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
+    }
+
+    public boolean onCreateOptionsMenu(android.view.Menu menu) {
+        MenuItem item = menu.add(0, 0, 0, "goto gallery");
+        item.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
+            public boolean onMenuItemClick(MenuItem item) {
+                Uri target = Uri.parse("content://media/external/images/media");
+                Intent intent = new Intent(Intent.ACTION_VIEW, target);
+                startActivity(intent);
+                return true;
+            }
+        });
+        return true;
+    }
+    
+    @Override
+    protected void onRestoreInstanceState(Bundle savedInstanceState)
+    {
+        super.onRestoreInstanceState(savedInstanceState);
+    }
+
+    /*
+     * Take JPEG Data and do what now?
+     * 
+     */
+    
+    Camera.PictureCallback mPictureCallback = new Camera.PictureCallback() {
+        public void onPictureTaken(byte[] data, Camera c) {
+            Log.e(TAG, "PICTURE CALLBACK: data.length = " + data.length);
+            mCamera.startPreview();
+        }
+    };
+
+    
+    public boolean onKeyDown(int keyCode, KeyEvent event)
+    {
+        if (keyCode == KeyEvent.KEYCODE_BACK) {        	
+            return super.onKeyDown(keyCode, event);
+        }
+ 
+        if (keyCode == KeyEvent.KEYCODE_CAMERA || keyCode == KeyEvent.KEYCODE_DPAD_CENTER || keyCode == KeyEvent.KEYCODE_SEARCH) {
+            mCamera.takePicture(null, null, mPictureCallback);
+            return true;
+        }
+
+        return false;
+    }
+
+    protected void onResume()
+    {
+        Log.e(TAG, "onResume");
+        super.onResume();
+    }
+
+    protected void onSaveInstanceState(Bundle outState)
+    {
+        super.onSaveInstanceState(outState);
+    }
+
+    protected void onStop()
+    {
+        Log.e(TAG, "onStop");
+        super.onStop();
+    }
+
+    public void surfaceCreated(SurfaceHolder holder)
+    {
+        Log.e(TAG, "surfaceCreated");
+        mCamera = Camera.open();
+        //mCamera.startPreview();
+    }
+
+    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h)
+    {
+        Log.e(TAG, "surfaceChanged");
+
+        // XXX stopPreview() will crash if preview is not running
+        if (mPreviewRunning) {
+            mCamera.stopPreview();
+        }
+
+        Camera.Parameters p = mCamera.getParameters();
+        p.setPreviewSize(w, h);
+        mCamera.setParameters(p);
+        try {
+			mCamera.setPreviewDisplay(holder);
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+        mCamera.startPreview();
+        mPreviewRunning = true;
+    }
+
+    public void surfaceDestroyed(SurfaceHolder holder)
+    {
+        Log.e(TAG, "surfaceDestroyed");
+        mCamera.stopPreview();
+        mPreviewRunning = false;
+        mCamera.release();
+    }
+
+    private SurfaceView mSurfaceView;
+    private SurfaceHolder mSurfaceHolder;
+	
+}