【发布时间】：2015-02-19 19:39:05
【问题描述】：
我的意思是，我希望能够同时按下两个单独的按钮，并让它们在 ACTION_DOWN 和 UP 上执行操作。
我有多个 onTouchListener，但该应用程序只允许我一次按下一个。我需要能够同时按下至少两个。我认为这与按住第一个按钮时程序陷入循环有关？
我阅读了一些关于 ACTION_POINTER1_DOWN 和 ACTION_POINTER2_DOWN 的内容，但我必须修改一些内容以使它们正常工作？或者我什至在正确的轨道上？
package the1n07.bt_rc;
import android.content.Intent;
import android.gesture.Gesture;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.NumberPicker;
public class ControlActivity extends ActionBarActivity {
Button speedPlusButton, speedMinusButton, forwardButton, backwardButton, leftButton, rightButton;
EditText speedText;
public String speed;
public Integer speedInt;
public boolean forward = false, backward = false, left = false, right = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.test_layout);
Main();
}
public void Main(){
speedPlusButton = (Button) findViewById(R.id.speedPlusButton);
speedMinusButton = (Button) findViewById(R.id.speedMinusButton);
speedText = (EditText) findViewById(R.id.speedText);
forwardButton = (Button) findViewById(R.id.forwardButton);
backwardButton = (Button) findViewById(R.id.backwardButton);
leftButton = (Button) findViewById(R.id.leftButton);
rightButton = (Button) findViewById(R.id.rightButton);
speedPlusButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
speed = speedText.getText().toString();
speedInt = Integer.parseInt(speed);
if(speedInt != 5) {
speedInt = speedInt + 1;
}
speed = Integer.toString(speedInt);
speedText.setText(speed);
}
});
speedMinusButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
speed = speedText.getText().toString();
speedInt = Integer.parseInt(speed);
if(speedInt != 1) {
speedInt = speedInt - 1;
}
speed = Integer.toString(speedInt);
speedText.setText(speed);
}
});
forwardButton.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
Log.d("forward", "is held down");
forward = true;
forwardButton.setBackgroundColor(0xFF7D7D7D);
break;
case MotionEvent.ACTION_UP:
Log.d("forward", "is lifted");
forward = false;
forwardButton.setBackgroundColor(0xff222222);
break;
case MotionEvent.ACTION_CANCEL:
forwardButton.setBackgroundColor(0xff222222);
forward = false;
break;
}
return true;
}
});
backwardButton.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
backward = true;
backwardButton.setBackgroundColor(0xFFB9B9B9);
break;
case MotionEvent.ACTION_UP:
backward = false;
backwardButton.setBackgroundColor(0xffffffff);
break;
case MotionEvent.ACTION_CANCEL:
backwardButton.setBackgroundColor(0xffffffff);
backward = false;
break;
}
return true;
}
});
leftButton.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
Log.d("left", "is held down");
left = true;
leftButton.setBackgroundColor(0xFF7D7D7D);
break;
case MotionEvent.ACTION_UP:
Log.d("left", "is lifted");
left = false;
leftButton.setBackgroundColor(0xff222222);
break;
case MotionEvent.ACTION_CANCEL:
leftButton.setBackgroundColor(0xff222222);
left = false;
break;
}
return true;
}
});
rightButton.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
right = true;
rightButton.setBackgroundColor(0xFFB9B9B9);
break;
case MotionEvent.ACTION_UP:
right = false;
rightButton.setBackgroundColor(0xffffffff);
break;
case MotionEvent.ACTION_CANCEL:
rightButton.setBackgroundColor(0xffffffff);
right = false;
break; //Does last case need break?
}
return true;
}
});
}
}
【问题讨论】：
标签： java android button multi-touch ontouchlistener