Note10

package com.example.upload;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
//import android.util.Base64;
import com.example.upload.Base64;

import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;
import java.io.Writer;
import java.io.Reader;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class Main extends Activity {
    private static final int SELECT_PICTURE = 1;
        private String selectedImagePath;
        private ImageView img;
        
        //EditText ed=(EditText)findViewById(R.id.ed);
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            img = (ImageView)findViewById(R.id.ImageView01);
            ((Button) findViewById(R.id.Button01)).setOnClickListener(new OnClickListener()
            {
                public void onClick(View arg0) 
                {
                    //選擇圖片
                    Intent intent = new Intent();
                    intent.setType("image/*");
                    intent.setAction(Intent.ACTION_GET_CONTENT);
                    startActivityForResult(Intent.createChooser(intent,"Select Picture"), SELECT_PICTURE);
                    //最後一個參數傳入選擇圖片的URI
                }
            });
        }
        public void onActivityResult(int requestCode, int resultCode, Intent data) 
        {
            InputStream is;
            //data去接剛剛選取的圖片
            if (resultCode == RESULT_OK) 
            {
                if (requestCode == SELECT_PICTURE) 
                {
                    //取得路徑
                    Uri selectedImageUri = data.getData();
                    selectedImagePath = getPath(selectedImageUri);
                    System.out.println("Image Path : " + selectedImagePath);
                    
                    //設定顯示圖片
                    img.setImageURI(selectedImageUri);
                    //使用Bitmap取圖片
                    BitmapFactory.Options options = new BitmapFactory.Options();
                    options.inSampleSize = 2;
                    //圖片寬高都為原來的二分之一，即圖片為原來的四分之一
                    Bitmap bitmap = BitmapFactory.decodeFile(selectedImagePath,options);    
                    ByteArrayOutputStream bao = new ByteArrayOutputStream();
                    bitmap.compress(Bitmap.CompressFormat.JPEG, 90, bao);
                    byte [] ba = bao.toByteArray();
                    //要POST至PHP檔使用Base64編碼
                    String ba1=Base64.encodeBytes(ba);
                    final ArrayList<NameValuePair> nameValuePairs = new
                    ArrayList<NameValuePair>();
                    nameValuePairs.add(new BasicNameValuePair("source",ba1));
                    try{
                        /*
                            HttpClient httpclient = new DefaultHttpClient();
                            HttpPost httppost = new
                            HttpPost("http://127.0.0.1/SOT/upload.php");
                            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                            HttpResponse response = httpclient.execute(httppost);
                            HttpEntity entity = response.getEntity();
                            is = entity.getContent();
                        */
                        //好像都不能直接跑在主執行緒上因此直接做了Thread讓他去用
                        Thread thread = new Thread(){ 
                            @Override
                            public void run(){ 
                                try{
                                    HttpClient httpclient = new DefaultHttpClient();
                                    HttpPost httppost = new
                                    HttpPost("YOUR_URL");
                                    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs, HTTP.UTF_8));
                                    //設定輸出為UTF-8
                                    HttpResponse response = httpclient.execute(httppost);
                                    HttpEntity entity = response.getEntity();
                                    InputStream is = entity.getContent();

                                }catch (Exception e){
                                    e.printStackTrace();
                                }finally{
                                }
                            }
                        };
                        //開始執行執行緒
                        thread.start();
                    }catch(Exception e){
                        Log.e("log_tag", "Error in http connection "+e.toString());
                    }
    
                }
            }
        }
        public String getPath(Uri uri) 
        {    String[] projection = 
            {
                MediaStore.Images.Media.DATA 
            };
            Cursor cursor = managedQuery(uri, projection, null, null, null);
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            cursor.moveToFirst();
            return cursor.getString(column_index);
        }
        
        
        
        
        
         public String convertStreamToString(InputStream is)
                    throws IOException {
                //
                // To convert the InputStream to String we use the
                // Reader.read(char[] buffer) method. We iterate until the
                // Reader return -1 which means there's no more data to
                // read. We use the StringWriter class to produce the string.
                //
                if (is != null) {
                    Writer writer = new StringWriter();
         
                    char[] buffer = new char[1024];
                    try {
                        Reader reader = new BufferedReader(
                                new InputStreamReader(is, "UTF-8"));
                        int n;
                        while ((n = reader.read(buffer)) != -1) {
                            writer.write(buffer, 0, n);
                        }
                    } finally {
                        is.close();
                    }
                    return writer.toString();
                } else {        
                    return "";
                }
            }
}

PHP檔如下:

$base=$_REQUEST['source'];

echo $base;

// base64 encoded utf-8 string

$binary=base64_decode($base);

// binary, utf-8 bytes

header('Content-Type: bitmap; charset=utf-8');


$name=uniqid();
//uniqid()是用來亂數產生一串英文數字

$file = fopen("$name.jpg", 'wb');
//開啟以那串英文數字為檔名的檔案
fwrite($file, $binary);
//寫入檔案
fclose($file);
//寫入完畢關閉檔案

//unlink($file)
//unlink刪除檔案
echo "";

大部分的解釋都直接註解在裡面了

這是一個從Android選取圖片直接上傳到PHP的程式

花了不少時間拼拼湊湊才把這個弄出來

網路上資料雖然很多，但是很多都是不能用的，不然就是舊的...

以上的流程大概就是
Android -> choose image -> encode(use Base64) -> PHP($_REQUEST) -> decode(Base64) ->Write to File and save


下面這兩行是因為手機似乎不像電腦有那麼大的記憶體

如果不縮小一點常常都會出現java.lang.outmemory然後就直接Shutdown了...

BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;


然後

httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs, HTTP.UTF_8));

如果要傳中文進去php檔必須要記得php檔要用utf儲存

android端送出資料的時候也要記得加上HTTP.UTF_8

如果出現這一行

org.apache.http.conn.HttpHostConnectException: Connection to http://127.0.0.1 refused

上網google似乎是因為android把自己當作local端了..

所以只要用 cmd ipconfig 查詢本機的ip換上去就可以了通常是 192.168.xxx.xxx