Question

我为我的ImageView“car”创建了一个onTouchListener，并希望为另一个ImageView做同样的事情，但我无法弄清楚如何。所以我的问题是：

如何使用一个onTouchListener检测两个独立ImageView的MotionEvents并相应地发生一些事情？

@Override
public boolean onTouch(View view, MotionEvent event) {

    //int action = event.getAction();
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                carcolor.setBackgroundColor(this.getResources().getColor(R.color.colorPrimary));

                car.startAnimation(pressdown);
                pressdown.setAnimationListener(new Animation.AnimationListener() {

                    @Override
                    public void onAnimationStart(Animation animation) {
                        carback.setScaleX((float) 0.9);
                        carback.setScaleY((float) 0.9);
                    }

                    @Override
                    public void onAnimationEnd(Animation animation) {
                        carback.setVisibility(View.VISIBLE);
                        car.setVisibility(View.INVISIBLE);
                    }

                    @Override
                    public void onAnimationRepeat(Animation animation) {

                    }
                });

                break;

            case MotionEvent.ACTION_MOVE:
                break;

            case MotionEvent.ACTION_UP:
                car.startAnimation(release);

                carcolor.setBackgroundColor(this.getResources().getColor(R.color.unpressed));

                release.setAnimationListener(new Animation.AnimationListener() {

                    @Override
                    public void onAnimationStart(Animation animation) {
                        carback.setVisibility(View.INVISIBLE);
                    }

                    @Override
                    public void onAnimationEnd(Animation animation) {
                        car.setVisibility(View.VISIBLE);
                    }

                    @Override
                    public void onAnimationRepeat(Animation animation) {

                    }
                });


                break;

            case MotionEvent.ACTION_CANCEL:
                break;
        }
        return true;

    }

Answer 1

如果您的活动正在实施onTouchListener事件（我假设基于覆盖），则在您的其他ImageView上执行以下操作

imageView.setOnTouchListener(this);

这是当前的活动。

编辑：根据您的评论

public class ImageView1Listener implements OnTouchListener
{
  **** OVERRIDES****
}

public class ImageView2Listener implements OnTouchListener{
**** OVERRIDS FOR THIS IMAGE****
}

然后在你的主要删除工具OnTouchListener并使用以编程方式绑定它

 imageView1.setOnClickListener(new ImageViewListener1());
 imageView2.setOnClickListener(new ImageViewListener2());

Answer 2

将侦听器附加到它们的父级。比，使用此处所述的gesturesDetector： https://developer.android.com/training/gestures/detector.html

public class MainActivity extends Activity implements 
        GestureDetector.OnGestureListener,
        GestureDetector.OnDoubleTapListener{

    private static final String DEBUG_TAG = "Gestures";
    private GestureDetectorCompat mDetector; 

    // Called when the activity is first created. 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // Instantiate the gesture detector with the
        // application context and an implementation of
        // GestureDetector.OnGestureListener
        mDetector = new GestureDetectorCompat(this,this);
        // Set the gesture detector as the double tap
        // listener.
        mDetector.setOnDoubleTapListener(this);
    }

    @Override 
    public boolean onTouchEvent(MotionEvent event){ 
        this.mDetector.onTouchEvent(event);
        // Be sure to call the superclass implementation
        return super.onTouchEvent(event);
    }

    @Override
    public boolean onSingleTapConfirmed(MotionEvent event) {
        Log.d(DEBUG_TAG, "onSingleTapConfirmed: " + event.toString());
        return true;
    }
    ....
}

Answer 3

您应该实现onTouchListener，如：

        imageView.setOnTouchListener(this);

并初始化它：

@Override
public boolean onTouch(View v, MotionEvent event) {
    ImageView view = (ImageView) v;
    switch (view.getId()){
        case R.id.car1: // example id
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    break;
                case MotionEvent.ACTION_MOVE:
                    break;
                case MotionEvent.ACTION_UP:
                    break;
                case MotionEvent.ACTION_CANCEL:
                    break;
            }
            break;
        case R.id.car2: // example id
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    break;
                case MotionEvent.ACTION_MOVE:
                    break;
                case MotionEvent.ACTION_UP:
                    break;
                case MotionEvent.ACTION_CANCEL:
                    break;
            }
            break;
    }
    return true;
}

如何为多个图像视图设置触控侦听器？

3 个答案: