將純文本添加到從相機意圖拍攝的照片

Question

我有使用照相機意圖的應用程序並將拍攝的照片保存到特定文件夾中。現在我錯過了一個更多的功能，那就是在拍攝照片後，我應該添加純文本（時間戳，圖片下/上邊框上的更多信息）並保存。

如何實現這一目標？我的代碼如下

public void takePicture(View view) 
{ 
    Intent intentCamera = new Intent(); 
    intentCamera.setAction(MediaStore.ACTION_IMAGE_CAPTURE); 

    File photofile = null; 
    try{ 
     photofile=createImageFile(); 
     intentCamera.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photofile)); 
     startActivityForResult(intentCamera, ActivityStartamera); 
     //Toast.makeText(this,Uri.fromFile(photofile).toString(), Toast.LENGTH_LONG).show(); 
    } 
    catch (IOException e) 
    { 
     e.printStackTrace(); 
     Toast.makeText(this, "Error happened", Toast.LENGTH_LONG).show(); 
     imageFileName=""; 
    } 
} 

protected void onActivityResult (int requestCode, int resultCode, Intent data) 
{ 
    if(requestCode == ActivityStartamera && resultCode == RESULT_OK) 
    { 
     // 
     //here i should add plain text to taken picture 
     // 
     Toast.makeText(this, "Picture taken", Toast.LENGTH_LONG).show(); 
    } 
    else{ 
     image.delete(); 
    } 
} 

File createImageFile() throws IOException{ 
    String timeStamp = new SimpleDateFormat("MMyyyydd_HHmmss").format(new Date()); 
    imageFileName = "picture_"+timeStamp; 

    storage = Environment.getExternalStoragePublicDirectory("PicturesForApp"); 
    if (!storage.exists()) 
    { 
     Toast.makeText(this, "Folder made for pictures", Toast.LENGTH_LONG).show(); 
     storage.mkdirs(); 
    } 
    image = new File(storage + "/" +imageFileName +".jpg"); 
    return image; 
} 

我已經試過類似this但unsucesfull。

Answer 1

請使用這種方法我相信它會幫助你。

public Bitmap addTextToImage(Bitmap src, String textToAddOnImage, int x, int y, int color, int alpha, int size, boolean underline) { 
    int w = src.getWidth(); 
    int h = src.getHeight(); 
    Bitmap result = Bitmap.createBitmap(w, h, src.getConfig()); 

    Canvas canvas = new Canvas(result); 
    canvas.drawBitmap(src, 0, 0, null); 

    Paint paint = new Paint(); 
    paint.setColor(color); 
    paint.setAlpha(alpha); 
    paint.setTextSize(size); 
    paint.setAntiAlias(true); 
    paint.setUnderlineText(underline); 
    canvas.drawText(textToAddOnImage, x, y, paint); 

    return result; 
} 

調用此方法像這樣

// use this bitmap to show in imageView and you can also save the bitmap. 

Bitmap bmp = addTextToImage(srcBitmap, "Mustanser Iqbal", 200, 200, Color.GREEN, 80, 24, false); 

File f = new File(mediaStorageDir.getPath() + File.separator + "IMG_" + fileName + ".png"); 
FileOutputStream fos = new FileOutputStream(f); 
bmp.compress(Bitmap.CompressFormat.PNG, 90, fos);