CameraUtil.java

package net.sourceforge.simcpux.uikit;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;

import com.tencent.mm.algorithm.MD5;
import com.tencent.mm.sdk.platformtools.Log;
import com.tencent.mm.sdk.platformtools.Util;

import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.provider.MediaStore;
import android.provider.MediaStore.MediaColumns;
import android.text.format.DateFormat;

public final class CameraUtil {

	private static final String TAG = "MicroMsg.SDK.CameraUtil";

	private static String filePath = null;

	private CameraUtil() {
		// can't be instantiated
	}

	public static boolean takePhoto(final Activity activity, final String dir, final String filename, final int cmd) {
		filePath = dir + filename;

		final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
		final File cameraDir = new File(dir);
		if (!cameraDir.exists()) {
			return false;
		}

		final File file = new File(filePath);
		final Uri outputFileUri = Uri.fromFile(file);
		intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
		try {
			activity.startActivityForResult(intent, cmd);

		} catch (final ActivityNotFoundException e) {
			return false;
		}
		return true;
	}

	public static String getResultPhotoPath(Context context, final Intent intent, final String dir) {
		if (filePath != null && new File(filePath).exists()) {
			return filePath;
		}

		return resolvePhotoFromIntent(context, intent, dir);
	}

	public static String resolvePhotoFromIntent(final Context ctx, final Intent data, final String dir) {
		if (ctx == null || data == null || dir == null) {
			Log.e(TAG, "resolvePhotoFromIntent fail, invalid argument");
			return null;
		}

		String filePath = null;

		final Uri uri = Uri.parse(data.toURI());
		Cursor cu = ctx.getContentResolver().query(uri, null, null, null, null);
		if (cu != null && cu.getCount() > 0) {
			try {
				cu.moveToFirst();
				final int pathIndex = cu.getColumnIndex(MediaColumns.DATA);
				Log.e(TAG, "orition: " + cu.getString(cu.getColumnIndex(MediaStore.Images.ImageColumns.ORIENTATION)));
				filePath = cu.getString(pathIndex);
				Log.d(TAG, "photo from resolver, path:" + filePath);

			} catch (Exception e) {
				e.printStackTrace();
			}

		} else if (data.getData() != null) {
			filePath = data.getData().getPath();
			if (!(new File(filePath)).exists()) {
				filePath = null;
			}
			Log.d(TAG, "photo file from data, path:" + filePath);

		} else if (data.getAction() != null && data.getAction().equals("inline-data")) {

			try {
				final String fileName = MD5.getMessageDigest(DateFormat.format("yyyy-MM-dd-HH-mm-ss", System.currentTimeMillis()).toString().getBytes()) + Util.PHOTO_DEFAULT_EXT;
				filePath = dir + fileName;

				final Bitmap bitmap = (Bitmap) data.getExtras().get("data");
				final File file = new File(filePath);
				if (!file.exists()) {
					file.createNewFile();
				}

				BufferedOutputStream out;
				out = new BufferedOutputStream(new FileOutputStream(file));
				final int cQuality = 100;
				bitmap.compress(Bitmap.CompressFormat.PNG, cQuality, out);
				out.close();
				Log.d(TAG, "photo image from data, path:" + filePath);

			} catch (final Exception e) {
				e.printStackTrace();
			}

		} else {
			if (cu != null) {
				cu.close();
				cu = null;
			}
			Log.e(TAG, "resolve photo from intent failed");
			return null;
		}
		if (cu != null) {
			cu.close();
			cu = null;
		}
		return filePath;
	}

}