所以我正在制作一个游戏,两个玩家在一个屏幕上同时玩。为简单起见,假设两个玩家在屏幕一侧有一个按钮,按钮B [0]和B [1]。我想实现多点触控,这样两个按钮都可以按下而没有反应,但只要其中一个按钮按下ACTION_DOWN,另一个按钮就会无法响应。我阅读了所有重复的问题并理解第二次触摸将被引用为ACTION_POINTER_DOWN所以我写了这段代码:
@Override
public boolean onTouch(View buttonPressed, MotionEvent action)
{
if(buttonPressed.getId()==B[0].getId())
{
if(action.getAction() == MotionEvent.ACTION_DOWN || action.getAction() == MotionEvent.ACTION_POINTER_DOWN)
B[0].setImageDrawable(BPressed[0]);
if(action.getAction() == MotionEvent.ACTION_UP || action.getAction() == MotionEvent.ACTION_POINTER_UP)
B[0].setImageDrawable(BOk[0]);
}
if(buttonPressed.getId()==B[1].getId())
{
if(action.getAction() == MotionEvent.ACTION_DOWN || action.getAction() == MotionEvent.ACTION_POINTER_DOWN)
B[1].setImageDrawable(BPressed[1]);
if(action.getAction() == MotionEvent.ACTION_UP || action.getAction() == MotionEvent.ACTION_POINTER_UP)
B[1].setImageDrawable(BOk[1]);
}
return true;
}
所以到目前为止,我可以判断我是否将1个手指放在B [0]上并将其留在那里(没有ACTION_UP)然后将另一个放在B [1]上,听众应该触发onTouch(B [1],ACTION_POINTER_DOWN)但是我认为它不会,因为当我这样做时,B [0]具有BPressed drawable而B [1]具有BOk drawable。我哪里做错了?对不起,如果我复制了,但我读了一切,似乎无法找到一个简单的解决方案。我找到的关于这个问题的每个解决方案都比我需要的更多。
这两个按钮都与监听器连接如下:
B[0].setOnTouchListener(this);
B[1].setOnTouchListener(this);
我读过这个:
ACTION_POINTER_DOWN and ACTION_POINTER_UP are fired whenever a secondary pointer goes down or up.
但这似乎不是真的。
编辑:
新代码,结果仍然相同:
@Override
public boolean onTouch(View buttonPressed, MotionEvent action)
{
if( buttonPressed.getId()==B[1].getId() )
Toast.makeText(context, "One", 500).show();
int act = action.getAction() & MotionEvent.ACTION_MASK;
if(buttonPressed.getId()==B[0].getId())
{
if(act == MotionEvent.ACTION_DOWN || act == MotionEvent.ACTION_POINTER_DOWN)
B[0].setImageDrawable(BPressed[0]);
if(act == MotionEvent.ACTION_UP || act == MotionEvent.ACTION_POINTER_UP)
B[0].setImageDrawable(BOk[0]);
}
if(buttonPressed.getId()==B[1].getId())
{
if(act == MotionEvent.ACTION_DOWN || act == MotionEvent.ACTION_POINTER_DOWN)
B[1].setImageDrawable(BPressed[1]);
if(act == MotionEvent.ACTION_UP || act == MotionEvent.ACTION_POINTER_UP)
B[1].setImageDrawable(BOk[1]);
}
return true;
}
此外,祝酒词:
if( buttonPressed.getId()==B[1].getId() )
Toast.makeText(context, "One", 500).show();
如果我把手指放在B [0]上,永远不会被看到。
屏蔽后:
有些事情发生了变化。假设我把手指放在B [0]上。在屏蔽之前,当我按下B [1]时没有任何反应。屏蔽后,如果我将手指放在B [0]上,然后我在屏幕上随意点击我的手指,它会循环B [0]。所以,如果我去:
finger1_DOWN on B[0] it changes to Pressed drawable
while(1)
{
finger2_DOWN anywhere nothing changes
finger2_UP anywhere B[0] changes to Ok drawable
}
我在OnCreate中创建了我的图像按钮:
B[0] = (ImageButton) findViewById(R.id.ImageButton05);
B[0].setOnTouchListener(this);
B[1] = (ImageButton) findViewById(R.id.ImageButton15);
B[1].setOnTouchListener(this);
我尝试了jboi的方法。我不在乎按钮是先按下还是按下按钮,所以我只是这样做了:
private class MPListener implements OnTouchListener
{
@Override
public boolean onTouch(View buttonPressed, MotionEvent event)
{
if(event.getAction() == MotionEvent.ACTION_DOWN)
{
if(buttonPressed.getId()==B[0].getId())
B[0].setImageDrawable(BPressed[0]);
if(buttonPressed.getId()==B[1].getId())
B[1].setImageDrawable(BPressed[1]);
}
if(event.getAction() == MotionEvent.ACTION_UP)
{
if(buttonPressed.getId()==B[0].getId())
B[0].setImageDrawable(BOk[0]);
if(buttonPressed.getId()==B[1].getId())
B[1].setImageDrawable(BOk[1]);
}
return true;
}
}
我从我的活动中删除了实现onTouchListener并添加了
B[0].setOnTouchListener(new MPListener());
B[1].setOnTouchListener(new MPListener());
没有任何改变。我仍然可以单独按下两个按钮,但不能同时按下。
修改 所以我做了一个新的活动,以防其他问题出现。这是我的新活动的完整代码:
package com.example.projectname;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnTouchListener;
import android.widget.ImageView;
public class About extends Activity
{
private class MPListener implements OnTouchListener
{
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_UP)
{
if(v.getId()==B[0].getId())
B[0].setImageDrawable(Bok[0]);
if(v.getId()==B[1].getId())
B[1].setImageDrawable(Bok[1]);
}
else if(event.getAction() == MotionEvent.ACTION_DOWN)
{
if(v.getId()==B[0].getId())
B[0].setImageDrawable(Bpressed[0]);
if(v.getId()==B[1].getId())
B[1].setImageDrawable(Bpressed[1]);
}
return true;
}
}
ImageView[] B;
Drawable[] Bok,Bpressed;
@Override
protected void onCreate(Bundle savedInstanceState)
{
//standard oncreate stuff
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_about);
Context context=getApplicationContext();
B=new ImageView[2];
Bok=new Drawable[2];
Bpressed=new Drawable[2];
Bok[0] = context.getResources().getDrawable(R.drawable.bblue);
Bok[1] = context.getResources().getDrawable(R.drawable.bpurp);
Bpressed[0] = context.getResources().getDrawable(R.drawable.bpressedblue);
Bpressed[1] = context.getResources().getDrawable(R.drawable.bpressedpurp);
B[0] = (ImageView) findViewById(R.id.imageView1);
B[1] = (ImageView) findViewById(R.id.imageView2);
B[0].setImageDrawable(Bok[0]);
B[1].setImageDrawable(Bok[1]);
B[0].setOnTouchListener(new MPListener());
B[1].setOnTouchListener(new MPListener());
}
}
一切都和往常一样。只要我按下一个按钮,另一个按钮就会没有响应。
答案 0 :(得分:1)
Android可以为您排序,按什么顺序按下什么,是否仍然被触摸。只需给出两个按钮不同的侦听器。类似这样的代码:
@Override
protected void onCreate(Bundle savedInstanceState) {
Log.d("TEST", "Begin onCreate");
super.onCreate(savedInstanceState);
Log.d("TEST", "End onCreate");
setContentView(R.layout.test);
findViewById(R.id.upperTouchable).setOnTouchListener(new MyTouchListener());
findViewById(R.id.lowerTouchable).setOnTouchListener(new MyTouchListener());
}
private boolean lowerIsTouched = false;
private boolean upperIsTouched = false;
private void setInfo() {
if(lowerIsTouched && upperIsTouched)
((TextView) findViewById(R.id.info)).setText("both touched");
else if(lowerIsTouched)
((TextView) findViewById(R.id.info)).setText("only lower is touched");
else if(upperIsTouched)
((TextView) findViewById(R.id.info)).setText("only upper is touched");
else
((TextView) findViewById(R.id.info)).setText("non is touched");
((TextView) findViewById(R.id.lowerTouchable)).setText(lowerIsTouched? "touched":"not touched");
((TextView) findViewById(R.id.upperTouchable)).setText(upperIsTouched? "touched":"not touched");
}
private class MyTouchListener implements OnTouchListener {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
if(v.getId() == R.id.lowerTouchable)
lowerIsTouched = true;
else if(v.getId() == R.id.upperTouchable)
upperIsTouched = true;
setInfo();
}
else if(event.getAction() == MotionEvent.ACTION_UP) {
if(v.getId() == R.id.lowerTouchable)
lowerIsTouched = false;
else if(v.getId() == R.id.upperTouchable)
upperIsTouched = false;
setInfo();
}
return true;
}
}
和相应的布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/info"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:background="#FFFFFFFF"
android:text="Non touched"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="@+id/upperTouchable"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center"
android:text="Not touched"
android:background="#FFF0F0F0"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="@+id/lowerTouchable"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center"
android:text="Not touched"
android:background="#FFFFFFFF"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>