在同一视图上实现拖动和双击 android

Question

我想在 EditText 上实现拖动和双击事件，但我只能实现两者中的一个。这背后的想法是，当用户双击编辑文本时，编辑文本将变为启用状态，并且通过拖动，他可以将其拖动到他想要的任何位置。

text.setOnTouchListener(new OnTouchListener() {

            public boolean onTouch(View v, MotionEvent event) {
                // TODO Auto-generated method stub
                if(gestureDetector.onTouchEvent(event)==true && gestureDetector!=null){
                    return gestureDetector.onTouchEvent(event);
                }
                else
                {drag(event, v);
                return true; }
            }

            private void drag(MotionEvent event, View v) {
                // TODO Auto-generated method stub
                RelativeLayout.LayoutParams params = (android.widget.RelativeLayout.LayoutParams) v
                        .getLayoutParams();

                switch (event.getAction()) {
                case MotionEvent.ACTION_MOVE: {
                    params.topMargin = (int) event.getRawY() - (v.getHeight());
                    params.leftMargin = (int) event.getRawX()
                            - (v.getWidth() / 2);
                    v.setLayoutParams(params);
                    break;
                }
                case MotionEvent.ACTION_UP: {
                    params.topMargin = (int) event.getRawY() - (v.getHeight());
                    params.leftMargin = (int) event.getRawX()
                            - (v.getWidth() / 2);
                    v.setLayoutParams(params);
                    break;
                }
                case MotionEvent.ACTION_DOWN: {
                    v.setLayoutParams(params);
                    break;
                }
                }
            }
        });

Answer 1

我找到了解决方案

// TODO Auto-generated method stub

            int X = (int) event.getRawX();
            int Y = (int) event.getRawY();
            layoutParams = (FrameLayout.LayoutParams) v.getLayoutParams();

            switch (event.getAction() & MotionEvent.ACTION_MASK) {
            case MotionEvent.ACTION_DOWN:
                FrameLayout.LayoutParams lParams = (FrameLayout.LayoutParams) v
                        .getLayoutParams();
                _xDelta = X - lParams.leftMargin;
                _yDelta = Y - lParams.topMargin;

                startTime = System.currentTimeMillis();
                if (upCounter != 0) {
                    timeBetweenTwoClick = startTime - endTime;
                }

                mSingleStart = System.currentTimeMillis();

                break;
            case MotionEvent.ACTION_UP:
                endTime = System.currentTimeMillis();
                mSingleEnd = System.currentTimeMillis();
                currentClickTime = endTime - startTime;
                consecutiveTwoClickTime = currentClickTime
                        + previousClickTime;

                // textview single tap detection
                if (mSingleEnd - mSingleStart <= mSingleTimeDiffrence) {
                    Toast.makeText(MainActivity.this, "tap", 1500).show();

                    if (mSingleCount == false) {
                        GradientDrawable gd = new GradientDrawable();
                        gd.setCornerRadius(5);
                        gd.setStroke(3, 0xFF000000);
                        text.setBackgroundDrawable(gd);
                        verticalSeekBar.setVisibility(View.VISIBLE);
                        verticalSeekBar
                                .setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

                                    @Override
                                    public void onStopTrackingTouch(
                                            SeekBar seekBar) {
                                        // TODO Auto-generated method
                                        // stub

                                    }

                                    @Override
                                    public void onStartTrackingTouch(
                                            SeekBar seekBar) {
                                        // TODO Auto-generated method
                                        // stub

                                    }

                                    @Override
                                    public void onProgressChanged(
                                            SeekBar seekBar, int progress,
                                            boolean fromUser) {
                                        // TODO Auto-generated method
                                        // stub
                                        text.setTextSize(progress + 20);
                                        text2.setTextSize(progress + 20);
                                    }
                                });

                        mSingleCount = true;
                    } else {
                        text.setBackgroundDrawable(null);
                        mSingleCount = false;
                        verticalSeekBar.setVisibility(View.INVISIBLE);
                    }

                }

                if (upCounter == 0) {
                    ++upCounter;
                    previousClickTime = currentClickTime;
                }

                else {
                    previousClickTime = currentClickTime;
                    if ((consecutiveTwoClickTime + timeBetweenTwoClick) <= doubleClickTimeDiffrence) {

                        if (layoutParams != null)
                            text2.setLayoutParams(layoutParams);

                        text2.setVisibility(View.VISIBLE);
                        text2.requestFocus();

                        if (text2.getText().toString()
                                .equalsIgnoreCase("enter by double tap")) {
                            text2.setText("");

                        }
                        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                        imm.showSoftInput(text2,
                                InputMethodManager.SHOW_IMPLICIT);
                        text.setVisibility(View.INVISIBLE);

                        Toast.makeText(MainActivity.this, "double tap",
                                1500).show();
                    }

                }
                break;
            case MotionEvent.ACTION_POINTER_DOWN:
                break;
            case MotionEvent.ACTION_POINTER_UP:
                break;
            case MotionEvent.ACTION_MOVE:

                layoutParams.leftMargin = X - _xDelta;
                layoutParams.topMargin = Y - _yDelta;
                if (layoutParams.leftMargin < 0) {
                    layoutParams.leftMargin = 20;
                } else if (layoutParams.leftMargin > mainimage.getWidth()) {
                    layoutParams.leftMargin = mainimage.getWidth() - 20;
                }
                if (layoutParams.topMargin < 0) {
                    layoutParams.topMargin = 20;
                } else if (layoutParams.topMargin > mainimage.getHeight() - 100) {
                    text.setText(text2.getText().toString());
                    layoutParams.topMargin = mainimage.getHeight() - 90
                            - text.getHeight();
                    // layoutParams.leftMargin = 20;
                }

                text.setX(layoutParams.leftMargin);
                text.setY(layoutParams.topMargin);

                v.setLayoutParams(text.getLayoutParams());

                Log.i("mainimage.getHeight() ",
                        (mainimage.getHeight() - 60) + " "
                                + layoutParams.topMargin + " "
                                + text.getHeight());

                // if (text.getLeft() >= 0 && text.getTop() >= 0
                // && text.getRight() < width
                // && text.getBottom() < mainimage.getHeight()) {
                //
                // text.setX(layoutParams.leftMargin);
                // text.setY(layoutParams.topMargin);
                // } else if (text.getTop() < 0) {
                //
                // text.setX(layoutParams.leftMargin);
                // text.setY(10);
                // } else if (text.getBottom() > mainimage.getHeight()) {
                // text.setX(layoutParams.leftMargin);
                // text.setY(mainimage.getHeight() - 50);
                // } else if (text.getLeft() < 0) {
                // text.setX(10);
                // text.setY(layoutParams.topMargin);
                // } else if (text.getRight() > mainimage.getWidth()) {
                //
                // text.setX(mainimage.getWidth() - 10);
                // text.setY(layoutParams.topMargin);
                // }
                // else {
                // text.setX(20);
                // text.setY(20);
                // }

                // layoutParams.rightMargin = -250;
                // layoutParams.bottomMargin = -250;

                // if (text.getWidth() < (width - 50)) {
                //
                // }

                // text.setWidth(width - text.getLeft());

                // Log.i("From Current position: ",
                // "Left Margin: " + X + " " + _xDelta
                // + "Left Margin: " + Y + " " + _yDelta
                // + "layoutParams.leftMargin: "
                // + layoutParams.leftMargin
                // + " layoutParams.topMargin: "
                // + layoutParams.topMargin
                // + " layoutParams.height - width: "
                // + layoutParams.height + " " + width
                // + " " + (width - text.getWidth()) + " "
                // + text.getWidth());
                break;

在同一视图上实现拖动和双击 android

implement drag and double tap on the same view android

android

drag