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, 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, 85, 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, 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, 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) { //给Matrix 设置旋转的角度 m.setRotate(degree); bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), m, true); } float scaleValue = (float) specifiedWidth / bitmap.getWidth(); // 等比压缩 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; } } /** * 读取图片属性：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, 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。
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