Question

我正在将drawable转换为可静态位图，在其上创建画布和绘制文本，将画布添加到图像，然后将位图保存到文件中。它正确保存图像，但文本不在保存的图像上。我已经查看了其他答案并尝试了它们，但似乎没有任何工作。

这是代码：

  public void createTitleImageFromDrawable(){

    // Create file object for saving the the bitmap
    File file = new File(MainActivity.mRootDirectoryForFrontViewImages + "front_view_image_day00001.PNG");
    FileOutputStream outStream = null;
    try {
        outStream = new FileOutputStream(file);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }

    // Create a bitmap from the title image drawable
    Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.dory);

    // Create a mutable version of the bitmap to draw on it
    Bitmap mutableBitmap = bm.copy(Bitmap.Config.ARGB_8888, true);//&lt;--true makes copy mutable

    // Create a new canvas and set it to the new muteable bitmap
    Canvas canvas = new Canvas(mutableBitmap);

    // Create paint object and set up settings for it
    Paint paint = new Paint();
    paint.setColor(Color.BLACK); // Text Color
    paint.setTextSize(40); // Text Size


    // Using the canvas draw on the muteable bitmap
     canvas.drawText("Test", 10, 10, paint);

    // Put the muteable file into the file
    mutableBitmap.compress(Bitmap.CompressFormat.PNG, 100, outStream);

    try {
        outStream.flush();
    } catch (IOException e) {
        e.printStackTrace();
    }
    try {
        outStream.close();
    } catch (IOException e) {
        e.printStackTrace();
    }


}

感谢您的帮助。

Answer 1

在这里，我提供的代码对您有所帮助。请理解此代码并根据您的要求应用更改。您可以将文本的确切位置放在您触摸的位置。

public void setCBitmap(Bitmap bitmap2, MotionEvent e, String name) {
    float eventX = e.getX();
    float eventY = e.getY();
    float[] eventXY = new float[] { eventX, eventY };

    Matrix invertMatrix = new Matrix();
    ((ImageView) main_iMG).getImageMatrix().invert(invertMatrix);

    invertMatrix.mapPoints(eventXY);
    int x = Integer.valueOf((int) eventXY[0]);
    int y = Integer.valueOf((int) eventXY[1]);
    Canvas canvas = null;
    canvas = new Canvas(bitmap2);
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint.setColor(Color.WHITE);
    paint.setTextSize(45);


    Paint mpaint= new Paint();
    mpaint.setColor(Color.parseColor("#f9bf3a"));
    mpaint.setStyle(Style.FILL);
    float w = paint.measureText(name)/2;
    float textSize = paint.getTextSize();
    Paint paint1= new Paint(Paint.ANTI_ALIAS_FLAG);



    Paint p= new Paint();
    p.setAntiAlias(true);
    p.setColor(Color.WHITE);
    p.setStyle(Paint.Style.FILL);
    canvas.drawARGB(0, 0, 0, 0);
    canvas.drawRoundRect(new RectF( x-13, y -(textSize+3), x + paint.measureText(name)+13,y+23), 7, 7, p);


    canvas.drawRoundRect(new RectF( x-10, y -(textSize), x + paint.measureText(name)+10,y+20),  7,7,mpaint);
    canvas.drawText(name, x, y, paint);

    main_iMG.setImageBitmap(bitmap2)}

保存前将文本添加到位图

1 个答案: