Android_OCR识别 身份证信息

一、环境的搭建

Android studio下载地址：点击这里下载。

sun.misc.base64decoder.jar：http://www.pc6.com/softview/SoftView_456772.html

sun.misc.base64decoder.jar下载完成后倒入libs

二、界面搭建

   

三、功能实现

首先实现图片浏览功能：

在打开相册的点击事件中实现打开相册功能

if (ContextCompat.checkSelfPermission(MainActivity.this,
        Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(MainActivity.this,
            new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
} else {
    openAlbum();
}

public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    switch (requestCode) {
        case 1:
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                openAlbum();
            } else {
                Toast.makeText(this, "You denied the permission", Toast.LENGTH_SHORT).show();
            }
            break;
        default:
    }
}

private void openAlbum() {
    Intent intent = new Intent("android.intent.action.GET_CONTENT");
    intent.setType("image/*");

    startActivityForResult(intent, CHOOSE_PHOTO);
}

在onActivityResult中

if (resultCode == RESULT_OK) {
    if (Build.VERSION.SDK_INT >= 19) {
        handleImageOnKitKat(data);
    } else {
        handleImageBeforeKitKat(data);
    }
}
break;

private void handleImageOnKitKat(Intent data) {
    String imagePath = null;
    Uri uri = data.getData();
    Log.d("TAG", "handleImageOnKitKat: uri is " + uri);
    if (DocumentsContract.isDocumentUri(this, uri)) {
        String docId = DocumentsContract.getDocumentId(uri);
        if ("com.android.providers.media.documents".equals(uri.getAuthority())) {
            String id = docId.split(":")[1];
            String selection = MediaStore.Images.Media._ID + "=" + id;
            imagePath = getImagePath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, selection);
        } else if ("com.android.providers.downloads.documents".equals(uri.getAuthority())) {
            Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(docId));
            imagePath = getImagePath(contentUri, null);
        }
    } else if ("content".equalsIgnoreCase(uri.getScheme())) {
        imagePath = getImagePath(uri, null);
    } else if ("file".equalsIgnoreCase(uri.getScheme())) {
        imagePath = uri.getPath();
    }
    displayImage(imagePath);
}
private void handleImageBeforeKitKat(Intent data) {
    Uri uri = data.getData();
    String imagePath = getImagePath(uri, null);
    displayImage(imagePath);
}

private void displayImage(String imagePath) {
    if (imagePath != null) {
        Bitmap bitmap = BitmapFactory.decodeFile(imagePath);
        mIvShowPic.setImageBitmap(bitmap);
        File file = new File(imagePath);
        try {
            InputStream inputStream = new FileInputStream(file);
            getOrcData(inputStream);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    } else {
        Toast.makeText(this, "failed to get image", Toast.LENGTH_SHORT).show();
    }
}

private void getOrcData(InputStream inputStream) {
    if (inputStream==null) {
        return;
    }else {
        show_text.setText("");
    }
    try {
        byte[] data = new byte[inputStream.available()];
        inputStream.read(data);
        //关闭流
        inputStream.close();
        BASE64Encoder encoder = new BASE64Encoder();
        String encode = encoder.encode(data);
        getPerSonData(encode);
        Log.e("encode", "1----------------------------" + encode);
    } catch (IOException e) {
        e.printStackTrace();
    }
}

private void getPerSonData(final String encode) {
    new Thread(new Runnable() {
        @Override
        public void run() {
            try {
                Log.e("test", "2----------------------------");
                JSONObject jsonObject1 = new JSONObject();
                jsonObject1.put("image", encode);

                JSONObject jsonObject2 = new JSONObject();
                jsonObject2.put("side", "face");

                jsonObject1.put("configure", jsonObject2.toString());
                Log.e("jsonObject1", "" + jsonObject1.toString());
                URL url = new URL("http://dm-51.data.aliyun.com/rest/160601/ocr/ocr_idcard.json");

                //这里就用第三方开源库okhttp，，httpURlConnction太磨叽了
                Log.e("aa", "aaaaaaaaaaaa");
                OkHttpClient client = new OkHttpClient();
                RequestBody requestBody = FormBody.create(MediaType.parse("application/json;charset=utf-8"), jsonObject1.toString());
                Request request = new Request.Builder()
                        .url(url)
                        .header("accept", "*/*")
                        .header("connection", "Keep-Alive")
                        .header("Content-Type", "text/html;charset=utf-8")//41056833fb5d44c8826d72b5de3c472a可以去阿里云注册
                        .header("Authorization", "APPCODE 41056833fb5d44c8826d72b5de3c472a") //可以去阿里云注册
                        .method("POST", requestBody)
                        .build();
                Response response = client.newCall(request).execute();
                if (response != null) {
                    String string = response.body().string();
                    Log.e("aa", "aaaaaaaaaaaa");
                    Log.e("aa", "aaaaaaaaaaaa" + string);
                    showText(string);
                }
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }).start();
}

之所以这样写参数是因为阿里云给这样的接口

最后是显示文字（返回的是json，就不解析了）：

private void showText(final String string) {
    runOnUiThread(new Runnable() {
        @Override
        public void run() {
            show_text.setText(string);
        }
    });
}

打开相机写法也类似，就只将文件流转换成64字节码，传数据就完事了

项目地址github:  https://github.com/android-xiao-jun/Android-ocr-.git