我想做的是处理多点触控按钮。我有 6 个按钮，用户可以触摸 1 到 6 个按钮。问题是MotionEvent最多可以处理 3 个指针，但我需要最多 6 个指针。请问有什么帮助吗？
这是代码：
public class MultitouchtestActivity extends Activity {
private class TouchListener implements OnTouchListener {
@Override
public boolean onTouch(final View v, final MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
switch (v.getId()) {
case R.id.button1:
sqText = "Square 1 Pressed::Pointer count = "
+ String.valueOf(event.getPointerCount());
break;
case R.id.button2:
sq1Text = "Square 2 Pressed::Pointer count = "
+ String.valueOf(event.getPointerCount());
break;
case R.id.button3:
sq2Text = "Square 3 Pressed::Pointer count = "
+ String.valueOf(event.getPointerCount());
break;
case R.id.button4:
sq3Text = "Square 4 Pressed::Pointer count = "
+ String.valueOf(event.getPointerCount());
break;
case R.id.button5:
sq4Text = "Square 5 Pressed::Pointer count = "
+ String.valueOf(event.getPointerCount());
break;
case R.id.button6:
sq5Text = "Square 6 Pressed::Pointer count = "
+ String.valueOf(event.getPointerCount());
break;
}
} else if (event.getAction() == MotionEvent.ACTION_POINTER_1_DOWN) {
switch (v.getId()) {
case R.id.button1:
sqText = "Square 1 Pointer1Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
case R.id.button2:
sq1Text = "Square 2 Pointer1Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
case R.id.button3:
sq2Text = "Square 3 Pointer1Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
case R.id.button4:
sq3Text = "Square 4 Pointer1Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
}
} else if (event.getAction() == MotionEvent.ACTION_POINTER_2_DOWN) {
switch (v.getId()) {
case R.id.button1:
sqText = "Square 1 Pointer2Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
case R.id.button2:
sq1Text = "Square 2 Pointer2Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
case R.id.button3:
sq2Text = "Square 3 Pointer2Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
case R.id.button4:
sq3Text = "Square 4 Pointer2Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
}
} else if (event.getAction() == MotionEvent.ACTION_POINTER_3_DOWN) {
switch (v.getId()) {
case R.id.button1:
sqText = "Square 1 Pointer3Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
case R.id.button2:
sq1Text = "Square 2 Pointer3Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
case R.id.button3:
sq2Text = "Square 3 Pointer3Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
case R.id.button4:
sq3Text = "Square 4 Pointer3Down::Pointer count = "
+ String.valueOf(event.getPointerCount()) + "\n";
break;
}
}
// TODO Auto-generated method stub
return true;
}
}
protected Button sq1;
protected Button sq2;
protected Button sq3;
protected Button sq4;
protected Button sq5;
protected Button sq6;
protected String sqText = new String();
protected String sq1Text = new String();
protected String sq2Text = new String();
protected String sq3Text = new String();
protected String sq4Text = new String();
protected String sq5Text = new String();
private final Handler handler = new Handler();
private final Runnable mUpdateUITimerTask = new Runnable() {
@Override
public void run() {
// do whatever you want to change here, like:
updateTextField();
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setViews();
handler.postDelayed(mUpdateUITimerTask, 5000);
}
private void setViews() {
sq1 = (Button) findViewById(R.id.button1);
sq2 = (Button) findViewById(R.id.button2);
sq3 = (Button) findViewById(R.id.button3);
sq4 = (Button) findViewById(R.id.button4);
sq5 = (Button) findViewById(R.id.button5);
sq6 = (Button) findViewById(R.id.button6);
sq1.setOnTouchListener(new TouchListener());
sq2.setOnTouchListener(new TouchListener());
sq3.setOnTouchListener(new TouchListener());
sq4.setOnTouchListener(new TouchListener());
sq5.setOnTouchListener(new TouchListener());
sq6.setOnTouchListener(new TouchListener());
}
private void updateTextField() {
final TextView view1 = (TextView) findViewById(R.id.logView);
final TextView view2 = (TextView) findViewById(R.id.logView1);
final TextView view3 = (TextView) findViewById(R.id.logView2);
final TextView view4 = (TextView) findViewById(R.id.logView3);
final TextView view5 = (TextView) findViewById(R.id.logView4);
final TextView view6 = (TextView) findViewById(R.id.logView5);
// view1.append(sqText + "\n");
view1.setText(sqText);
view2.setText(sq1Text);
view3.setText(sq2Text);
view4.setText(sq3Text);
view5.setText(sq4Text);
view6.setText(sq5Text);
handler.post(mUpdateUITimerTask);
}
}