android system camera returns picture (original)

Jurisdiction

 <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></uses-permission>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"></uses-permission>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
    <uses-permission android:name="android.permission.CAMERA"></uses-permission>

Jump to Camera

    private void  intent_Carmer(){
        String state = Environment.getExternalStorageState();
//        Get SD card status
        if (state.equals(Environment.MEDIA_MOUNTED)) {
//            If SD card exists and is readable and writable
            File file = new File(path);
//             Create a new folder here.Path Save path for picture
            if (!file.exists()) {
//                If the file does not exist
                file.mkdir();
//                new file
            }
        }
        String fileName = getPhotoFileName() + ".jpg";
//        Picture name, time here
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//        MediaStore.ACTION_IMAGE_CAPTURE for Jump to Camera
        path_carmer =path + fileName;
//        path_carmer as String Global Variable"Picture Final Path
           Uri uri     = Uri.fromFile(new File(path_carmer));
        intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
//        Match your own picture save address
        startActivityForResult(intent,TAKE_PHOTO);
//        Start Jump

    }

getPhotoFileName() returns the picture name (name here is time)

 private String getPhotoFileName() {
        Date date = new Date(System.currentTimeMillis());
        //System.currentTimeMillis()-----) Time
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd_HHmmss");

        return "IMG_" + dateFormat.format(date);
    }

path_carmer global string variable

private String path_carmer;//Camera Picture Final Storage Path

path Picture Save path (DCIM folder appears in this album)

    private String path = Environment.getExternalStorageDirectory()
         + File.separator + Environment.DIRECTORY_DCIM + File.separator;

TAKE_PHOTO Identifies Request

private static final int TAKE_PHOTO=1222;

After completing these steps, you are faced with an imageView display picture when the camera point is determined

  case TAKE_PHOTO:
                    FileInputStream fis = null;
                    try {
                        fis=new FileInputStream(path_carmer);
                        Bitmap bitmap=BitmapFactory.decodeStream(fis);
                        img.setImageBitmap(bitmap);
                    } catch (FileNotFoundException e) {
                        e.printStackTrace();
                    }finally {
                        try {
                            fis.close();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }

Displaying pictures must be in the OnActivityResult () method, which is overridden with three parameters

 @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    //requestCode request identification; resultCode result identification; data data data
        super.onActivityResult(requestCode, resultCode, data);
        }

case is where I use switch to determine requestCode.

Note:

The picture is shown here at my address, so the data is empty

File operation to catch exceptions

Dynamic Load Rights if Mobile Phone is ANDROID 6.0 or above

Tags: Android Mobile

Posted on Mon, 20 Jul 2020 10:33:36 -0400 by Arya