嗨，我正在制作一款分屏游戏，但我不知道如何降低控件。现在，如果只有一个人触摸屏幕，它们就可以正常工作，但一旦多人触摸屏幕，第一个触摸的人就是唯一可以控制的人。所以我需要实现多点触控。我不知道该怎么做，所以一旦一根手指向下控制屏幕上半部分的对象，另一根手指就可以放下来控制屏幕的下半部分。我应该怎么做？
编辑: 我更改了它，但它仍然不起作用，但有人能告诉我为什么吗
我的尝试无效:
public boolean onTouch(View v, MotionEvent event){
//needs multitouch
if(checkInGame()){
if(event.getY() < this.getMeasuredHeight() / 2){
pointerId1 = event.getPointerId(event.getActionIndex());
}else{
pointerId2 = event.getPointerId(event.getActionIndex());
}
switch(event.getAction() & MotionEvent.ACTION_MASK){
case MotionEvent.ACTION_MOVE:{
if(event.getPointerId(event.getActionIndex()) == pointerId1){
Log.d("Touch","Move1");
int pointerIndex = event.getActionIndex();
int moveX = 0;
int moveY = 0;
moveX = (int) event.getX(pointerIndex) - sX;
moveY = (int) event.getY(pointerIndex) - sY;
ship1.setLoc(moveX, moveY);
sX = sX + moveX;
sY = sY + moveY;
}else if(event.getPointerId(event.getActionIndex()) == pointerId2){
int pointerIndex = event.getActionIndex();
Log.d("Touch","Move2");
int moveX = 0;
int moveY = 0;
moveX = (int) event.getX(pointerIndex) - sX2;
moveY = (int) event.getY(pointerIndex) - sY2;
ship2.setLoc(moveX, moveY);
sX2 = sX2 + moveX;
sY2 = sY2 + moveY;
}
return true;
}
case MotionEvent.ACTION_DOWN: {
if(event.getPointerId(event.getActionIndex()) == pointerId1){
Log.d("Touch","Top1");
int pointerIndex = event.getActionIndex();
sX = (int) event.getX(pointerIndex);
sY = (int) event.getY(pointerIndex);
}else if(event.getPointerId(event.getActionIndex()) == pointerId2){
int pointerIndex = event.getActionIndex();
Log.d("Touch","Bottom1");
sX2 = (int) event.getX(pointerIndex);
sY2 = (int) event.getY(pointerIndex);
}
return true;
}
case MotionEvent.ACTION_POINTER_DOWN:{
if(event.getPointerId(event.getActionIndex()) == pointerId1){
Log.d("Touch","Top2");
int pointerIndex = event.getActionIndex();
sX = (int) event.getX(pointerIndex);
sY = (int) event.getY(pointerIndex);
}else if(event.getPointerId(event.getActionIndex()) == pointerId2){
int pointerIndex = event.getActionIndex();
Log.d("Touch","Bottom2");
sX2 = (int) event.getX(pointerIndex);
sY2 = (int) event.getY(pointerIndex);
}
return true;
}
}
最佳答案
您可能希望通过其 ID 跟踪每个指针。在指针向下时，检查 ID，这样您就知道 ID 为 1 的指针正在控制对象 1。请阅读这篇 Android 博客文章，它可能会有所帮助:http://android-developers.blogspot.co.uk/2010/06/making-sense-of-multitouch.html
关于android - 多点触控 Android - 一个手指使用一半屏幕，另一个手指使用一半屏幕，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10543737/