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   源码介绍

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另类文件上传

package com.example.picupload;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;

import android.app.Activity;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {
	private Button mTakePhoto;
	private ImageView mImageView;
	private static final String TAG = "upload";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		mTakePhoto = (Button) findViewById(R.id.take_photo);
		mImageView = (ImageView) findViewById(R.id.imageview);

		mTakePhoto.setOnClickListener(this);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		int id = v.getId();
		switch (id) {
		case R.id.take_photo:
			takePhoto();
			break;
		}
	}

	private void takePhoto() {
//		Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
//		intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
//		startActivityForResult(intent, 0);
		dispatchTakePictureIntent();
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		// TODO Auto-generated method stub
		Log.i(TAG, "onActivityResult: "   this);
		if (requestCode == REQUEST_TAKE_PHOTO && resultCode == Activity.RESULT_OK) {
			setPic();
//			Bitmap bitmap = (Bitmap) data.getExtras().get("data");
//			if (bitmap != null) {
//				mImageView.setImageBitmap(bitmap);
//				try {
//					sendPhoto(bitmap);
//				} catch (Exception e) {
//					// TODO Auto-generated catch block
//					e.printStackTrace();
//				}
//			}
		}
	}
	
	private void sendPhoto(Bitmap bitmap) throws Exception {
		new UploadTask().execute(bitmap);
	}

	private class UploadTask extends AsyncTask<Bitmap, Void, Void> {
		
		protected Void doInBackground(Bitmap... bitmaps) {
			if (bitmaps[0] == null)
				return null;
			setProgress(0);
			
			Bitmap bitmap = bitmaps[0];
			ByteArrayOutputStream stream = new ByteArrayOutputStream();
			bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream); // convert Bitmap to ByteArrayOutputStream
			InputStream in = new ByteArrayInputStream(stream.toByteArray()); // convert ByteArrayOutputStream to ByteArrayInputStream

			DefaultHttpClient httpclient = new DefaultHttpClient();
			try {
				HttpPost httppost = new HttpPost(
						"http://192.168.8.84:8003/savetofile.php"); // server

				MultipartEntity reqEntity = new MultipartEntity();
				reqEntity.addPart("myFile",
						System.currentTimeMillis()   ".jpg", in);
				httppost.setEntity(reqEntity);

				Log.i(TAG, "request "   httppost.getRequestLine());
				HttpResponse response = null;
				try {
					response = httpclient.execute(httppost);
				} catch (ClientProtocolException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				try {
					if (response != null)
						Log.i(TAG, "response "   response.getStatusLine().toString());
				} finally {

				}
			} finally {

			}

			if (in != null) {
				try {
					in.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}

			if (stream != null) {
				try {
					stream.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}

			return null;
		}
		
		@Override
		protected void onProgressUpdate(Void... values) {
			// TODO Auto-generated method stub
			super.onProgressUpdate(values);
		}
		
		@Override
		protected void onPostExecute(Void result) {
			// TODO Auto-generated method stub
			super.onPostExecute(result);
			Toast.makeText(MainActivity.this, R.string.uploaded, Toast.LENGTH_LONG).show();
		}
	}

	@Override
	protected void onResume() {
		// TODO Auto-generated method stub
		super.onResume();
		Log.i(TAG, "onResume: "   this);
	}

	@Override
	protected void onPause() {
		// TODO Auto-generated method stub
		super.onPause();
	}

	@Override
	public void onConfigurationChanged(Configuration newConfig) {
		// TODO Auto-generated method stub
		super.onConfigurationChanged(newConfig);
	}
	
	@Override
	protected void onSaveInstanceState(Bundle outState) {
		// TODO Auto-generated method stub
		super.onSaveInstanceState(outState);
		Log.i(TAG, "onSaveInstanceState");
	}
	
	String mCurrentPhotoPath;
	
	static final int REQUEST_TAKE_PHOTO = 1;
	File photoFile = null;

	private void dispatchTakePictureIntent() {
	    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
	    // Ensure that there's a camera activity to handle the intent
	    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
	        // Create the File where the photo should go
	        File photoFile = null;
	        try {
	            photoFile = createImageFile();
	        } catch (IOException ex) {
	            // Error occurred while creating the File

	        }
	        // Continue only if the File was successfully created
	        if (photoFile != null) {
	            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
	            		Uri.fromFile(photoFile));
	            startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
	        }
	    }
	}

	/**
	 * http://developer.android.com/training/camera/photobasics.html
	 */
	private File createImageFile() throws IOException {
	    // Create an image file name
	    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
	    String imageFileName = "JPEG_"   timeStamp   "_";
	    String storageDir = Environment.getExternalStorageDirectory()   "/picupload";
	    File dir = new File(storageDir);
	    if (!dir.exists())
	    	dir.mkdir();
	    
	    File image = new File(storageDir   "/"   imageFileName   ".jpg");

	    // Save a file: path for use with ACTION_VIEW intents
	    mCurrentPhotoPath = image.getAbsolutePath();
	    Log.i(TAG, "photo path = "   mCurrentPhotoPath);
	    return image;
	}
	
	private void setPic() {
		// Get the dimensions of the View
	    int targetW = mImageView.getWidth();
	    int targetH = mImageView.getHeight();

	    // Get the dimensions of the bitmap
	    BitmapFactory.Options bmOptions = new BitmapFactory.Options();
	    bmOptions.inJustDecodeBounds = true;
	    BitmapFactory.decodeFile(mCurrentPhotoPath, bmOptions);
	    int photoW = bmOptions.outWidth;
	    int photoH = bmOptions.outHeight;

	    // Determine how much to scale down the image
	    int scaleFactor = Math.min(photoW/targetW, photoH/targetH);

	    // Decode the image file into a Bitmap sized to fill the View
	    bmOptions.inJustDecodeBounds = false;
	    bmOptions.inSampleSize = scaleFactor << 1;
	    bmOptions.inPurgeable = true;

	    Bitmap bitmap = BitmapFactory.decodeFile(mCurrentPhotoPath, bmOptions);
	    
	    Matrix mtx = new Matrix();
	    mtx.postRotate(90);
	    // Rotating Bitmap
	    Bitmap rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), mtx, true);

	    if (rotatedBMP != bitmap)
	    	bitmap.recycle();
	    
	    mImageView.setImageBitmap(rotatedBMP);
	    
	    try {
			sendPhoto(rotatedBMP);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}