今天周日 记录一个小demo.
之前看到某德扑游戏有个(梭哈/all in)的操作
感觉挺有意思的,实现了下
上效果:
video2gif_20190224_175958.gif
大概画个图声明下原理
image.png
代码实现也是挺简洁的,很多东西明白原理了就很简单了,其实我当时实现花了很长时间,这个是最后的精华版本:
布局代码:
可以看到显示的数值view和滑动的那个logo,是通过FrameLayout来达到一个层叠的效果
布局很简单,认真看看就知道原理了
然后是实现代码:
注释我也直接写代码里面了
public class SlideActivity extends Activity {
private LinearLayout ll_container;
private ImageView ivMove;
private int containerWidth, containerHeight; //容器宽高
private float lastX, lastY; //最后一次触摸事件的坐标
private float actY1;
private TextView num;
TextView showText[];
private int showNum;
//滑动下注
private LinearLayout params;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_slide);
addView();
initXYview();
//咱们让数值默认隐藏状态
HIDE();
}
/**
* 滑动自由下注 (动态生成滑动条)====================================================================
*/
private void addView() {
int cost = 5000;
showNum = 35;
//这个是获取到的坐标数值
num = (TextView) findViewById(R.id.num);
//创建一个textview数据作为动态view
showText = new TextView[showNum];
for (int i = 0; i < showNum; i++) {
showText[i] = new TextView(this);
final TextView showText1 = new TextView(this);
showText[i].setGravity(Gravity.CENTER | Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL);
showText[i].setTag(i); //设置id
showText[i].setTextColor(Color.WHITE);
// set 文本大小
showText1.setTextColor(Color.TRANSPARENT);
showText1.setHeight(4);
showText1.setWidth(4);
//这个就是动态view的容器
params = (LinearLayout) findViewById(R.id.fl_container);
params.setGravity(Gravity.BOTTOM | Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL);
//添加文本到主布局
params.addView(showText[i]);
params.addView(showText1);
//设置不同点位的样式
if (i == 0) {
showText[i].setBackgroundResource(R.drawable.btn_data2);
showText[i].setText(String.valueOf(cost));
showText[i].getLayoutParams().width = ((int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 52, getResources().getDisplayMetrics()));
showText[i].getLayoutParams().height = ((int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 22, getResources().getDisplayMetrics()));
} else if (i == showNum / 2) {
showText[i].setBackgroundResource(R.drawable.btn_data2);
showText[i].setText(String.valueOf(cost / 2));
showText[i].getLayoutParams().width = ((int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 52, getResources().getDisplayMetrics()));
showText[i].getLayoutParams().height = ((int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 22, getResources().getDisplayMetrics()));
} else if (i == showNum - 1) {
showText[i].setBackgroundResource(R.drawable.btn_data2);
showText[i].setText("100");
showText[i].getLayoutParams().width = ((int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 52, getResources().getDisplayMetrics()));
showText[i].getLayoutParams().height = ((int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 22, getResources().getDisplayMetrics()));
} else {
showText[i].setBackgroundResource(R.drawable.msg_num_shape);
showText[i].setText(String.valueOf(cost / showNum * (showNum - i)));
showText[i].setTextSize(0);
showText[i].getLayoutParams().width = ((int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 6, getResources().getDisplayMetrics()));
showText[i].getLayoutParams().height = ((int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 6, getResources().getDisplayMetrics()));
}
}
}
/**
* 滑动取值
*/
@SuppressLint("ClickableViewAccessibility")
/**
* 关键>>>>>
* 滑动自由下注 ================================================================================
*/
private void initXYview() {
ll_container = (LinearLayout) findViewById(R.id.ll_container);
ll_container.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
@Override
public boolean onPreDraw() {
//不能直接在onCreate()方法中得到宽高,会得到0,所以注册视图树的观察者来得到宽高
//OnPreDrawListener是当一个视图树将要绘制时，所要调用的回调函数的接口类
containerWidth = ll_container.getWidth();
containerHeight = ll_container.getHeight();
return true;
}
});
ivMove = (ImageView) findViewById(R.id.iv_move); //滑动logo
ivMove.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
ivMove.setVisibility(View.VISIBLE);
switch (motionEvent.getAction()) {
case MotionEvent.ACTION_DOWN:
// 记录触摸时的坐标,这里为什么要用getRawX()和getRawY(),
// 相信理解getX(),getY()和getRawX(),getRawY()的区别就知道为什么了
lastX = motionEvent.getRawX();
lastY = motionEvent.getRawY();
actY1 = ivMove.getY();
DIAPLAY(); //显示滑动条
//return true对事件进行拦截,不继续下发,防止继续响应onClick事件.
return true;
case MotionEvent.ACTION_MOVE:
//每次移动的距离
float distanceX = motionEvent.getRawX() - lastX;
float distanceY = motionEvent.getRawY() - lastY;
//控件将要移动到的位置,先计算一下,不在ofFloat()方法中
// 再计算是因为要防止控件移动到容器之外.
float nextX = ivMove.getX() + distanceX;
float nextY = ivMove.getY() + distanceY;
//如果将要移动到的 x 轴坐标小于0,则等于0,防止移出容器左边
if (nextX < 0)
nextX = 0;
//防止移出容器右边
if (nextX > containerWidth - ivMove.getWidth())
nextX = containerWidth - ivMove.getWidth();
//防止移出容器顶边
if (nextY < 0)
nextY = 0;
//防止移出容器底边
if (nextY > containerHeight - ivMove.getHeight())
nextY = containerHeight - ivMove.getHeight();
if (nextY < showText[0].getY())
nextY = showText[0].getY();
//利用属性动画改变控件的x,y坐标
ObjectAnimator mObjectAnimatorX = ObjectAnimator.ofFloat(ivMove,
"x", ivMove.getX(), nextX);
ObjectAnimator mObjectAnimatorY = ObjectAnimator.ofFloat(ivMove,
"y", ivMove.getY(), nextY);
AnimatorSet mAnimatorSet = new AnimatorSet();
mAnimatorSet.playTogether(mObjectAnimatorX, mObjectAnimatorY);
mAnimatorSet.setDuration(0);
mAnimatorSet.start();
//移动完之后记录当前坐标
lastX = motionEvent.getRawX();
lastY = motionEvent.getRawY();
MatchingY(ivMove.getY());
break;
case MotionEvent.ACTION_UP:
HIDE();
//结束后回到原位
//利用属性动画改变控件的x,y坐标
ObjectAnimator mObjectAnimatorXX = ObjectAnimator.ofFloat(ivMove,
"x", ivMove.getX(), 0);
ObjectAnimator mObjectAnimatorYY = ObjectAnimator.ofFloat(ivMove,
"y", ivMove.getY(), actY1);
AnimatorSet mAnimatorSetX = new AnimatorSet();
mAnimatorSetX.playTogether(mObjectAnimatorXX, mObjectAnimatorYY);
mAnimatorSetX.setDuration(0);
mAnimatorSetX.start();
break;
}
return false;
}
});
}
//匹配滑动坐标取值
//这一步就是将滑动位置和数值所在位置坐标匹配,就能拿到准确的数值了
private void MatchingY(float y) {
float showy;
for (int i = 0; i < showNum; i++) {
showy = showText[i].getY();
if (showy - 2 < y && y < showy + 2) { // -2 和 +2 为坐标偏移量 (view中存在间隔)
num.setText(showText[i].getText().toString());
} else if (showText[showNum - 1].getY() - 2 < y) {
num.setText("100");
}
}
}
//隐藏数值还有滑动view
private void HIDE() {
params.setVisibility(View.INVISIBLE);
ivMove.setBackgroundResource(R.mipmap.png);
}
//显示数值还有滑动view
private void DIAPLAY() {
params.setVisibility(View.VISIBLE);
ivMove.setBackgroundResource(R.mipmap.my_gold2x);
}
}
上github 链接:(https://github.com/a824676719/ViewDemo)