如何通过在自定义键盘中向左或向右滑动空格键来更改键盘布局

问题描述

我制作了一个Android custom keyboard.

I made an android custom keyboard.

我想在键盘上的Space key上滑动以更改键盘布局以显示下一种语言布局.

I want to use swiping on Space key on the keyboard for changing keyboard layout to show next language layout.

我该怎么做?

我使用了波纹管课程:

public class KeyboardIMS extends InputMethodService implements KeyboardView.OnKeyboardActionListener
{ ...}

推荐答案

您可以通过覆盖touchEvent这样来实现:

You can do this by override touchEvent like this :

@Override
public boolean onTouchEvent(MotionEvent e) {

float x = e.getX();
float y = e.getY();

    switch (e.getAction()) {
    case MotionEvent.ACTION_DOWN:
        mIsDown = true;
        break;
    case MotionEvent.ACTION_MOVE:

        float dx = x - mPreviousX;
        float dy = y - mPreviousY;

        // Here you can try to detect the swipe. It will be necessary to
        // store more than the previous value to check that the user move constantly in the same direction
        detectSwipe(dx, dy);

    case MotionEvent.ACTION_UP:
        mIsDown = false;
        break;
}

mPreviousX = x;
mPreviousY = y;
return true;}

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