Android实现上传图片功能
短信预约 -IT技能 免费直播动态提醒
本文实例为大家分享了Android实现上传图片功能的具体代码，供大家参考，具体内容如下
设定拍照返回的图片路径
protected void image(String image, int i) {
//创建file对象，用于存储拍照后的图片，这也是拍照成功后的照片路径
outputImage = new File(getExternalCacheDir(),image);
try {
//判断文件是否存在，存在删除，不存在创建
if (outputImage.exists()){
outputImage.delete();
}
outputImage.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
//相机拍照返回图片路径
Uri photoUri;
//判断当前Android版本
if(Build.VERSION.SDK_INT>=24){
photoUri = FileProvider.getUriForFile(TextActivity.this,"包名.FileProvider",outputImage);
}else {
photoUri = Uri.fromFile(outputImage);
}
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
startActivityForResult(intent, i);
}调用系统相机拍照接受返回的图片路径
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
if (requestCode == IMAGE_Y) {
getImageView(binding.imageY,"0");
}
if (requestCode == IMAGE_Q) {
getImageView(binding.imageQ,"1");
}
}
}上传图片
protected void getImageView(@NotNull ImageView view, String type) {
Bitmap photo = BitmapFactory.decodeFile(outputImage.getAbsolutePath());
view.setImageBitmap(photo);
int direction = 0;
try {
ExifInterface exif = new ExifInterface(String.valueOf(outputImage));
direction = Integer.parseInt(exif.getAttribute(ExifInterface.TAG_ORIENTATION));
} catch (IOException e) {
e.printStackTrace();
}
Matrix matrix = new Matrix();
Uri uri = Uri.fromFile(outputImage);
String f = uri.getPath();
Bitmap b = rotateBitmap(getBitmapFromUrl(f,900,1200),0);
switch (direction) {
case 1:
Log.d("图片方向","顶部，左侧（水平/正常）");
b = rotateBitmap(getBitmapFromUrl(f,900,1200),0);
break;
case 2:
b = rotateBitmap(getBitmapFromUrl(f,900,1200),0);
Log.d("图片方向","顶部，右侧（水平镜像）");
break;
case 3:
b = rotateBitmap(getBitmapFromUrl(f,900,1200),180);
Log.d("图片方向","底部，右侧（旋转180）");
break;
case 4:
matrix.postScale(1, -1);
b = Bitmap.createBitmap(b,0,0,900,1200,matrix,true);
Log.d("图片方向","底部，左侧（垂直镜像）");
break;
case 5:
matrix.postScale(-1, 1);
b = rotateBitmap(getBitmapFromUrl(f,900,1200),270);
b = Bitmap.createBitmap(b,0,0,900,1200,matrix,true);
Log.d("图片方向","左侧，顶部（水平镜像并顺时针旋转270）");
break;
case 6:
b = rotateBitmap(getBitmapFromUrl(f,900,1200),90);
Log.d("图片方向","右侧，顶部（顺时针旋转90）");
break;
case 7:
matrix.postScale(-1, 1);
b = rotateBitmap(getBitmapFromUrl(f,900,1200),90);
b = Bitmap.createBitmap(b,0,0,900,1200,matrix,true);
Log.d("图片方向","右侧，底部（水平镜像，顺时针旋转90度）");
break;
case 8:
b = rotateBitmap(getBitmapFromUrl(f,900,1200),270);
Log.d("图片方向","左侧，底部（顺时针旋转270）");
break;
default:
break;
}
try {
File files = new File(new URI(uri.toString()));
saveBitmap(b,files);
} catch (URISyntaxException e) {
e.printStackTrace();
}
try {
String file = uploadImage(networkApi.getFormal() + "setImage", uri.getPath(), code, userId);
TextBase.FileInfo fileInfo = new TextBase.FileInfo();
fileInfo.setFilePath(file);
mFileInfos.add(fileInfo);
model.load(file,type);
} catch (IOException | JSONException e) {
e.printStackTrace();
}
}
public static String uploadImage(String url, String imagePath, String code, String userId) throws IOException, JSONException {
OkHttpClient okHttpClient = new OkHttpClient();
Log.d("imagePath", imagePath);
File file = new File(imagePath);
RequestBody image = RequestBody.create(MediaType.parse("image/jpg"), file);
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("file", imagePath, image)
.addFormDataPart("fileOid", code)
.addFormDataPart("userId", userId)
.build();
Request request = new Request.Builder()
.url(url)
.addHeader("Authorization",令牌)
.post(requestBody)
.build();
Response response = okHttpClient.newCall(request).execute();
JSONObject jsonObject = new JSONObject(response.body().string());
return jsonObject.optString("msg");
}其他工具类
public static Bitmap getBitmapFromUrl(String url, double width, double height) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true; // 设置了此属性一定要记得将值设置为false
Bitmap bitmap = BitmapFactory.decodeFile(url);
// 防止OOM发生
options.inJustDecodeBounds = false;
int mWidth = bitmap.getWidth();
int mHeight = bitmap.getHeight();
Matrix matrix = new Matrix();
float scaleWidth = 1;
float scaleHeight = 1;
// 按照固定宽高进行缩放
if(mWidth <= mHeight) {
scaleWidth = (float) (width/mWidth);
scaleHeight = (float) (height/mHeight);
} else {
scaleWidth = (float) (height/mWidth);
scaleHeight = (float) (width/mHeight);
}
// 按照固定大小对图片进行缩放
matrix.postScale(scaleWidth, scaleHeight);
Bitmap newBitmap = Bitmap.createBitmap(bitmap, 0, 0, mWidth, mHeight, matrix, true);
// 用完了记得回收
bitmap.recycle();
return newBitmap;
}
public static boolean saveBitmap(Bitmap bitmap, File file) {
if (bitmap == null)
return false;
FileOutputStream fos = null;
try {
fos = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.flush();
return true;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return false;
}
public static Bitmap rotateBitmap(Bitmap bitmap, int rotate) {
if (bitmap == null)
return null;
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix mtx = new Matrix();
mtx.postRotate(rotate);
return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
}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网。
免责声明：
① 本站未注明“稿件来源”的信息均来自网络整理。其文字、图片和音视频稿件的所属权归原作者所有。本站收集整理出于非商业性的教育和科研之目的，并不意味着本站赞同其观点或证实其内容的真实性。仅作为临时的测试数据，供内部测试之用。本站并未授权任何人以任何方式主动获取本站任何信息。
② 本站未注明“稿件来源”的临时测试数据将在测试完成后最终做删除处理。有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341
