Question

我在android中制作绘画应用程序。但我有一个问题，我想改变STROKE clickListeners上的宽度或画笔大小增加或减少。但问题是这样我选择新的宽度刷第一次不改变他的宽度和第二次当我绘制画笔的宽度是改变的。所以我能做什么才能解决问题。请帮忙。这是我的代码

int Stork_Width=0; 

        but1 = (Button) dialog.findViewById(R.id.but1);
                            // if button is clicked, close the custom dialog
                            but1.setOnClickListener(new OnClickListener() {
                                @Override
                                public void onClick(View v) {
                                    //idd=mMaindialog.get(position).imagename;

                                    Stork_Width=10;
                                    mPaint.setStrokeWidth(Stork_Width);
                                    dialog.dismiss();
                                }




                            });

                           but2 = (Button) dialog.findViewById(R.id.but2);
                            // if button is clicked, close the custom dialog
                            but2.setOnClickListener(new OnClickListener() {
                                @Override
                                public void onClick(View v) {

                                    Stork_Width=15;
                                    mPaint.setStrokeWidth(Stork_Width);
                                    dialog.dismiss();
                                }
                            });

                            but3 = (Button) dialog.findViewById(R.id.but3);
                            // if button is clicked, close the custom dialog
                            but3.setOnClickListener(new OnClickListener() {
                                @Override
                                public void onClick(View v) {

                                    Stork_Width=25;
                                    mPaint.setStrokeWidth(Stork_Width);
                                    dialog.dismiss();
                                }
                            });



now i create the method of Brushes  :
and strore the path in Hashmap also:

private Map<Path, Integer> colorwidth = new HashMap<Path, Integer>();

private Paint createBrush(final int width) {
            // TODO Auto-generated method stub
            mPaint1 = new Paint();
            mPaint1.setColor(colorPicked);
            mPaint1.setAntiAlias(true);
            mPaint1.setDither(true);
            mPaint1.setStyle(Paint.Style.STROKE);
            mPaint1.setStrokeJoin(Paint.Join.ROUND);
            mPaint1.setStrokeCap(Paint.Cap.ROUND);
             mPaint1.setStrokeWidth(width);
            return mPaint1;
        }

ontouch activity::


@Override
        public boolean onTouchEvent(MotionEvent event) {
            float x = event.getX();
            float y = event.getY();
            switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                // touch_start(x, y);
                // invalidate();
                undonePaths.clear();
                mPath.reset();
                mPath.moveTo(x, y);
                mX = x;
                mY = y;
                invalidate();
                break;
            case MotionEvent.ACTION_MOVE:
                // touch_move(x, y);
                // invalidate();
                float dx = Math.abs(x - mX);
                float dy = Math.abs(y - mY);
                if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
                    mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
                    mX = x;
                    mY = y;
                }
                invalidate();
                break;
            case MotionEvent.ACTION_UP:
                // touch_up();
                // invalidate();
                mPath.lineTo(mX, mY);
                mMaindialog.add(mPath);
                colorsMap.put(mPath, slll);
                colorwidth.put(mPath, Stork_Width);
                mPath = new Path();
                mPath.reset();
                invalidate();
                break;
            }
            return true;

Answer 1

使用此，
它对我很好

float scale = getResources().getDisplayMetrics().density;
        int sizeInDp = (int) (20*scale + 0.5f);
        width11=sizeInDp;

如何在android中单击Listener来增加/减少STROKE宽度

1 个答案: