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我已經實現了下面的代碼。讓我知道在觸摸方法啓動時，必須更改代碼以繪製點。當觸擊方法啓動時，手指畫不畫點
目前線條繪畫順暢，同時觸摸MOVE方法運行。但如果我點擊那麼點不是繪圖。
我想畫點，而我開始TOUCH DOWN方法。
請給任何解決方案。
mPaint = new Paint();
mPaintText = new Paint();
mPaint.setAntiAlias(true);
mPaint.setDither(true);
mPaint.setColor(Color.BLUE);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPaint.setStrokeCap(Paint.Cap.ROUND);
mPaint.setStrokeWidth(7);
mCanvas = new Canvas();
mPath = new Path();
@Override
public boolean onTouch(View arg0, MotionEvent event) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
touch_start(x, y);
invalidate();
break;
case MotionEvent.ACTION_MOVE:
touch_move(x, y);
invalidate();
break;
case MotionEvent.ACTION_UP:
touch_up();
invalidate();
break;
}
return true;
}
private float mX, mY;
private static final float TOUCH_TOLERANCE = 4;
private void touch_start(float x, float y) {
mPath.reset();
mPath.moveTo(x, y);
mX = x;
mY = y;
}
private void touch_move(float x, float y) {
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;
}
}
private void touch_up() {
mPath.lineTo(mX, mY);
mCanvas.drawPath(mPath, mPaint);
Paint newPaint = new Paint(mPaint); // Clones the mPaint object
mPath = new Path();
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawPath(mPath, mPaint);
}