android实现上传本地图片到网络功能

概述本文实例为大家分享了android上传本地图片到网络的具体代码，供大家参考，具体内容如下

本文实例为大家分享了androID上传本地图片到网络的具体代码，供大家参考，具体内容如下

首先这里用到了Okhttp 所以需要一个依赖：

compile 'com.squareup.okhttp3:okhttp:3.9.0'

xml布局

<?xml version="1.0" enCoding="utf-8"?> <linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"   xmlns:app="http://schemas.androID.com/apk/res-auto"   xmlns:tools="http://schemas.androID.com/tools"   androID:layout_wIDth="match_parent"   androID:orIEntation="vertical"   androID:layout_height="match_parent"   tools:context="com.bwei.czx.czx10.MainActivity">    <button     androID:layout_wIDth="wrap_content"     androID:layout_height="wrap_content"     androID:ID="@+ID/photo"/>     <button     androID:layout_wIDth="wrap_content"     androID:layout_height="wrap_content"     androID:ID="@+ID/camear"/>  </linearLayout> 

AndroIDManifest.xml中：权限

<uses-permission androID:name="androID.permission.INTERNET"/>   <uses-permission androID:name="androID.permission.WRITE_EXTERNAL_STORAGE"/>   <uses-permission androID:name="androID.permission.READ_EXTERNAL_STORAGE"/> 

MainActivity中：

oncreat:

@OverrIDe   protected voID onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     setContentVIEw(R.layout.activity_main);     findVIEwByID(R.ID.photo).setonClickListener(new VIEw.OnClickListener() {       @OverrIDe       public voID onClick(VIEw vIEw) {          tophoto();       }     });       findVIEwByID(R.ID.camear).setonClickListener(new VIEw.OnClickListener() {       @OverrIDe       public voID onClick(VIEw vIEw) {          toCamera();       }     });     } 

和oncreat同级的方法：

 public voID postfile(file file){        // sdcard/dliao/aaa.jpg     String path = file.getabsolutePath() ;      String [] split = path.split("\/");       MediaType MEDIA_TYPE_PNG = MediaType.parse("image/png");       OkhttpClIEnt clIEnt = new OkhttpClIEnt();      Requestbody requestbody = new Multipartbody.Builder()         .setType(Multipartbody.FORM) //        file         .addFormDataPart("imagefilename",split[split.length-1])         .addFormDataPart("image",split[split.length-1],Requestbody.create(MEDIA_TYPE_PNG,file))         .build();        Request request = new Request.Builder().post(requestbody).url("http://qhb.2dyt.com/Bwei/upload").build();       clIEnt.newCall(request).enqueue(new Callback() {       @OverrIDe       public voID onFailure(Call call,IOException e) {        }        @OverrIDe       public voID onResponse(Call call,Response response) throws IOException {           System.out.println("response = " + response.body().string());        }     });      }     static final int INTENTFORCAMERA = 1 ;   static final int INTENTFORPHOTO = 2 ;     public String LocalPhotoname;   public String createLocalPhotoname() {     LocalPhotoname = System.currentTimeMillis() + "face.jpg";     return LocalPhotoname ;   }    public voID toCamera(){     try {       Intent intentNow = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);       Uri uri = null ; //      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { //针对Android7.0，需要通过fileProvIDer封装过的路径，提供给外部调用 //        uri = fileProvIDer.getUriForfile(UploadPhotoActivity.this,"com.bw.dliao",SDCardUtils.getMyFacefile(createLocalPhotoname()));//通过fileProvIDer创建一个content类型的Uri，进行封装 //      }else {       uri = Uri.fromfile(SDCardUtils.getMyFacefile(createLocalPhotoname())) ; //      }       intentNow.putExtra(MediaStore.EXTRA_OUTPUT,uri);       startActivityForResult(intentNow,INTENTFORCAMERA);     } catch (Exception e) {       e.printstacktrace();     }   }       /**    * 打开相册    */   public voID tophoto(){     try {       createLocalPhotoname();       Intent getAlbum = new Intent(Intent.ACTION_GET_CONTENT);       getAlbum.setType("image/*");       startActivityForResult(getAlbum,INTENTFORPHOTO);     } catch (Exception e) {       e.printstacktrace();     }   }   @OverrIDe   protected voID onActivityResult(int requestCode,int resultCode,Intent data) {     super.onActivityResult(requestCode,resultCode,data);      switch (requestCode) {       case INTENTFORPHOTO:         //相册         try {           // 必须这样处理，不然在4.4.2手机上会出问题           Uri originalUri = data.getData();           file f = null;           if (originalUri != null) {             f = new file(SDCardUtils.photoCacheDir,LocalPhotoname);             String[] proj = {MediaStore.Images.Media.DATA};             Cursor actualimagecursor = this.getContentResolver().query(originalUri,proj,null,null);             if (null == actualimagecursor) {               if (originalUri.toString().startsWith("file:")) {                 file file = new file(originalUri.toString().substring(7,originalUri.toString().length()));                 if(!file.exists()){                   //地址包含中文编码的地址做utf-8编码                   originalUri = Uri.parse(URLDecoder.decode(originalUri.toString(),"UTF-8"));                   file = new file(originalUri.toString().substring(7,originalUri.toString().length()));                 }                 fileinputStream inputStream = new fileinputStream(file);                 fileOutputStream outputStream = new fileOutputStream(f);                 copyStream(inputStream,outputStream);               }             } else {               // 系统图库               int actual_image_column_index = actualimagecursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);               actualimagecursor.movetoFirst();               String img_path = actualimagecursor.getString(actual_image_column_index);               if (img_path == null) {                 inputStream inputStream = this.getContentResolver().openinputStream(originalUri);                 fileOutputStream outputStream = new fileOutputStream(f);                 copyStream(inputStream,outputStream);               } else {                 file file = new file(img_path);                 fileinputStream inputStream = new fileinputStream(file);                 fileOutputStream outputStream = new fileOutputStream(f);                 copyStream(inputStream,outputStream);               }             }             Bitmap bitmap = ImageResizeUtils.resizeImage(f.getabsolutePath(),1080);             int wIDth = bitmap.getWIDth();             int height = bitmap.getHeight();             fileOutputStream fos = new fileOutputStream(f.getabsolutePath());             if (bitmap != null) {                if (bitmap.compress(Bitmap.CompressFormat.JPEG,85,fos)) {                 fos.close();                 fos.flush();               }               if (!bitmap.isRecycled()) {                 bitmap.isRecycled();               }                System.out.println("f = " + f.length());               postfile(f);              }            }         } catch (Exception e) {           e.printstacktrace();          }           break;       case INTENTFORCAMERA: //        相机         try {            //file 就是拍照完 得到的原始照片           file file = new file(SDCardUtils.photoCacheDir,LocalPhotoname);           Bitmap bitmap = ImageResizeUtils.resizeImage(file.getabsolutePath(),1080);           int wIDth = bitmap.getWIDth();           int height = bitmap.getHeight();           fileOutputStream fos = new fileOutputStream(file.getabsolutePath());           if (bitmap != null) {             if (bitmap.compress(Bitmap.CompressFormat.JPEG,fos)) {               fos.close();               fos.flush();             }             if (!bitmap.isRecycled()) {               //通知系统 回收bitmap               bitmap.isRecycled();             }             System.out.println("f = " + file.length());              postfile(file);           }         } catch (Exception e) {           e.printstacktrace();         }            break;     }    }     public static voID copyStream(inputStream inputStream,OutputStream outStream) throws Exception {     try {       byte[] buffer = new byte[1024];       int len = 0;       while ((len = inputStream.read(buffer)) != -1) {         outStream.write(buffer,len);       }       outStream.flush();     } catch (IOException e) {       e.printstacktrace();     }finally {       if(inputStream != null){         inputStream.close();       }       if(outStream != null){         outStream.close();       }     }    } 

ImageResizeUtils中：

package com.bwei.czx.czx10;  import androID.graphics.Bitmap; import androID.graphics.BitmapFactory; import androID.graphics.Matrix; import androID.media.ExifInterface;  import java.io.file; import java.io.fileinputStream; import java.io.fileNotFoundException; import java.io.IOException; import java.io.inputStream; import java.io.OutputStream;  import static androID.graphics.BitmapFactory.decodefile;  /**  * Created by czx on 2017/9/27.  */  public class ImageResizeUtils {    /**    * 照片路径    * 压缩后 宽度的尺寸    * @param path    * @param specifIEDWIDth    */   public static Bitmap resizeImage(String path,int specifIEDWIDth) throws Exception {       Bitmap bitmap = null;     fileinputStream inStream = null;     file f = new file(path);     System.out.println(path);     if (!f.exists()) {       throw new fileNotFoundException();     }     try {       inStream = new fileinputStream(f);       int degree = readPictureDegree(path);       BitmapFactory.Options opt = new BitmapFactory.Options();       //照片不加载到内存 只能读取照片边框信息       opt.inJustDecodeBounds = true;       // 获取这个图片的宽和高       decodefile(path,opt); // 此时返回bm为空          int inSampleSize = 1;       final int wIDth = opt.outWIDth; //      wIDth 照片的原始宽度 specifIEDWIDth 需要压缩的宽度 //      1000 980       if (wIDth > specifIEDWIDth) {         inSampleSize = (int) (wIDth / (float) specifIEDWIDth);       }       // 按照 565 来采样 一个像素占用2个字节       opt.inPreferredConfig = Bitmap.Config.RGB_565; //      图片加载到内存       opt.inJustDecodeBounds = false;       // 等比采样       opt.inSampleSize = inSampleSize; //      opt.inPurgeable = true;       // 容易导致内存溢出       bitmap = BitmapFactory.decodeStream(inStream,opt);       // bitmap = BitmapFactory.decodefile(path,opt);       if (inStream != null) {         try {           inStream.close();         } catch (IOException e) {           e.printstacktrace();         } finally {           inStream = null;         }       }        if (bitmap == null) {         return null;       }       Matrix m = new Matrix();       if (degree != 0) {         //给Matrix 设置旋转的角度         m.setRotate(degree);         bitmap = Bitmap.createBitmap(bitmap,bitmap.getWIDth(),bitmap.getHeight(),m,true);       }       float scaleValue = (float) specifIEDWIDth / bitmap.getWIDth(); //      等比压缩       m.setScale(scaleValue,scaleValue);       bitmap = Bitmap.createBitmap(bitmap,true);       return bitmap;     } catch (OutOfMemoryError e) {       e.printstacktrace();       return null;     } catch (Exception e) {       e.printstacktrace();       return null;     }     }     /**    * 读取@R_502_6363@：旋转的角度    *    * @param path 源信息    *      图片绝对路径    * @return degree旋转的角度    */   public static int readPictureDegree(String path) {     int degree = 0;     try {       ExifInterface exifInterface = new ExifInterface(path);       int orIEntation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION,ExifInterface.ORIENTATION_norMAL);       switch (orIEntation) {         case ExifInterface.ORIENTATION_ROTATE_90:           degree = 90;           break;         case ExifInterface.ORIENTATION_ROTATE_180:           degree = 180;           break;         case ExifInterface.ORIENTATION_ROTATE_270:           degree = 270;           break;       }     } catch (IOException e) {       e.printstacktrace();     }     return degree;   }     public static voID copyStream(inputStream inputStream,len);       }       outStream.flush();     } catch (IOException e) {       e.printstacktrace();     }finally {       if(inputStream != null){         inputStream.close();       }       if(outStream != null){         outStream.close();       }     }    } } 

SDcardutils中：

package com.bwei.czx.czx10;  import androID.os.Environment; import androID.os.StatFs;  import java.io.file; import java.io.IOException;  /**  * Created by czx on 2017/9/27.  */  public class SDCardUtils {   public static final String DliAO = "dliao" ;    public static file photoCacheDir = SDCardUtils.createCacheDir(Environment.getExternalStorageDirectory().getabsolutePath() + file.separator + DliAO);   public static String cachefilename = "myphototemp.jpg";      public static boolean isSDCardExist() {     if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {       return true;     } else {       return false;     }   }    public static voID delFolder(String folderPath) {     try {       delAllfile(folderPath);       String filePath = folderPath;       filePath = filePath.toString();       file myfilePath = new file(filePath);       myfilePath.delete();     } catch (Exception e) {       e.printstacktrace();     }   }    public static boolean delAllfile(String path) {     boolean flag = false;     file file = new file(path);     if (!file.exists()) {       return flag;     }     if (!file.isDirectory()) {       return flag;     }     String[] tempList = file.List();     file temp = null;     for (int i = 0; i < tempList.length; i++) {       if (path.endsWith(file.separator)) {         temp = new file(path + tempList[i]);       } else {         temp = new file(path + file.separator + tempList[i]);       }       if (temp.isfile()) {         temp.delete();       }       if (temp.isDirectory()) {         delAllfile(path + "/" + tempList[i]);// 先删除文件夹里面的文件         delFolder(path + "/" + tempList[i]);// 再删除空文件夹         flag = true;       }     }     return flag;   }    public static boolean deleteoldAllfile(final String path) {     try {       new Thread(new Runnable() {          @OverrIDe         public voID run() {           delAllfile(Environment.getExternalStorageDirectory() + file.separator + DliAO);         }       }).start();      } catch (Exception e) {       e.printstacktrace();       return false;     }     return true;   }    /**    * 给定字符串获取文件夹    *    * @param dirPath    * @return 创建的文件夹的完整路径    */   public static file createCacheDir(String dirPath) {     file dir = new file(dirPath);;     if(isSDCardExist()){       if (!dir.exists()) {         dir.mkdirs();       }     }     return dir;   }    public static file createNewfile(file dir,String filename) {     file f = new file(dir,filename);     try {       // 出现过目录不存在的情况，重新创建       if (!dir.exists()) {         dir.mkdirs();       }       f.createNewfile();     } catch (IOException e) {       e.printstacktrace();     }     return f;   }    public static file getCachefile() {     return createNewfile(photoCacheDir,cachefilename);   }    public static file getMyFacefile(String filename) {     return createNewfile(photoCacheDir,filename);   }    /**    * 获取SDCARD剩余存储空间    *    * @return 0 sd已被挂载占用 1 sd卡内存不足 2 sd可用    */   public static int getAvailableExternalStorageSize() {     if (isSDCardExist()) {       file path = Environment.getExternalStorageDirectory();       StatFs stat = new StatFs(path.getPath());       long blockSize = stat.getBlockSize();       long availableBlocks = stat.getAvailableBlocks();       long memorySize = availableBlocks * blockSize;       if(memorySize < 10*1024*1024){         return 1;       }else{         return 2;       }     } else {       return 0;     }   } } 

这样就可以上传图片到网络了！

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程小技巧。

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