Question

i 正在开发游戏,一显示屏幕底部的枪支中心。当用户在屏幕上抽取时,需要朝此方向轮换枪支。 i 轮流图像。但当用户在屏幕上抽取时,则需要对这一方向进行轮换。请帮助我

预收

Aswan

Answer 1

你们的形象是个蓝图吗? 你们可以把它变成一个? http://www.anddev.org/resize_and_rotate_image_-_example-t621.html”rel=“nofollow” http://www.anddev.org/resize_and_rotate_image_-_example-t621.html。

Seeing some code as to what you ve attempting would be nice also. The following will help you with checking if the bitmap has been clicked in case you re stuck on that also http://developer.android.com/reference/android/view/View.html . I ve never attemped this myself but I think that would work. Try redrawing the bitmap when you have resized it.

Answer 2

公平使用Touch 名单考虑和使用这一守则

     @Override
 public boolean onTouch(View v, MotionEvent event) {
    float currentX = event.getX();
    float currentY = event.getY();
    Log.i(TAG, "action type is"+event.getAction());
    switch (event.getAction()) {
    case MotionEvent.ACTION_MOVE: {
        Log.i(TAG, "Entering in onTouch");
        double rotationAngleRadians = Math.atan2(currentX - dialer.centerX,      dialer.centerY - currentY);
        dialer.rotationAngle = (int) Math.toDegrees(rotationAngleRadians);
        Log.i(TAG, "rotaion angle"+dialer.rotationAngle);
        dialer.invalidate();
        return true;
    }
    }
    return true;
}

友情链接