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android實現上傳本地圖片到網絡功能

發布時間：2020-10-04 19:41:42 來源：腳本之家 閱讀：147 作者：程澤翔 欄目：移動開發

本文實例為大家分享了android上傳本地圖片到網絡的具體代碼，供大家參考，具體內容如下

首先這里用到了Okhttp 所以需要一個依賴：

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：權限

<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同級的方法：

 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("https://cache.yisu.com/upload/information/20200623/125/126390.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) { //針對Android7.0，需要通過FileProvider封裝過的路徑，提供給外部調用 
//        uri = FileProvider.getUriForFile(UploadPhotoActivity.this, "com.bw.dliao", SDCardUtils.getMyFaceFile(createLocalPhotoName()));//通過FileProvider創建一個content類型的Uri，進行封裝 
//      }else { 
      uri = Uri.fromFile(SDCardUtils.getMyFaceFile(createLocalPhotoName())) ; 
//      } 
      intentNow.putExtra(MediaStore.EXTRA_OUTPUT, uri); 
      startActivityForResult(intentNow, INTENTFORCAMERA); 
    } catch (Exception e) { 
      e.printStackTrace(); 
    } 
  } 
 
 
 
 
  /** 
   * 打開相冊 
   */ 
  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: 
        //相冊 
        try { 
          // 必須這樣處理，不然在4.4.2手機上會出問題 
          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, null); 
            if (null == actualimagecursor) { 
              if (originalUri.toString().startsWith("file:")) { 
                File file = new File(originalUri.toString().substring(7, originalUri.toString().length())); 
                if(!file.exists()){ 
                  //地址包含中文編碼的地址做utf-8編碼 
                  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 { 
              // 系統圖庫 
              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: 
//        相機 
        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, 85, fos)) { 
              fos.close(); 
              fos.flush(); 
            } 
            if (!bitmap.isRecycled()) { 
              //通知系統 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, 0, 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 { 
 
  /** 
   * 照片路徑 
   * 壓縮后 寬度的尺寸 
   * @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(); 
      //照片不加載到內存 只能讀取照片邊框信息 
      opt.inJustDecodeBounds = true; 
      // 獲取這個圖片的寬和高 
      decodeFile(path, opt); // 此時返回bm為空 
 
 
 
      int inSampleSize = 1; 
      final int width = opt.outWidth; 
//      width 照片的原始寬度 specifiedWidth 需要壓縮的寬度 
//      1000 980 
      if (width > specifiedWidth) { 
        inSampleSize = (int) (width / (float) specifiedWidth); 
      } 
      // 按照 565 來采樣 一個像素占用2個字節 
      opt.inPreferredConfig = Bitmap.Config.RGB_565; 
//      圖片加載到內存 
      opt.inJustDecodeBounds = false; 
      // 等比采樣 
      opt.inSampleSize = inSampleSize; 
//      opt.inPurgeable = true; 
      // 容易導致內存溢出 
      bitmap = BitmapFactory.decodeStream(inStream, null, 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) { 
        //給Matrix 設置旋轉的角度 
        m.setRotate(degree); 
        bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), m, true); 
      } 
      float scaleValue = (float) specifiedWidth / bitmap.getWidth(); 
//      等比壓縮 
      m.setScale(scaleValue, scaleValue); 
      bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), m, true); 
      return bitmap; 
    } catch (OutOfMemoryError e) { 
      e.printStackTrace(); 
      return null; 
    } catch (Exception e) { 
      e.printStackTrace(); 
      return null; 
    } 
 
 
  } 
 
 
  /** 
   * 讀取圖片屬性：旋轉的角度 
   * 
   * @param path 源信息 
   *      圖片絕對路徑 
   * @return degree旋轉的角度 
   */ 
  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, OutputStream outStream) throws Exception { 
    try { 
      byte[] buffer = new byte[1024]; 
      int len = 0; 
      while ((len = inputStream.read(buffer)) != -1) { 
        outStream.write(buffer, 0, 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]);// 先刪除文件夾里面的文件 
        delFolder(path + "/" + tempList[i]);// 再刪除空文件夾 
        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; 
  } 
 
  /** 
   * 給定字符串獲取文件夾 
   * 
   * @param dirPath 
   * @return 創建的文件夾的完整路徑 
   */ 
  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 { 
      // 出現過目錄不存在的情況，重新創建 
      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); 
  } 
 
  /** 
   * 獲取SDCARD剩余存儲空間 
   * 
   * @return 0 sd已被掛載占用 1 sd卡內存不足 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; 
    } 
  } 
}

這樣就可以上傳圖片到網絡了！

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持億速云。

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