软键盘打开和关闭监听

 

1、自定义软键盘监听控件

代码如下，核心要点查看备注：

public class KeyboardLayout extends RelativeLayout {
    //软键盘展开
    public static final byte KEYBOARD_STATE_SHOW = -3;
    //软键盘隐藏
    public static final byte KEYBOARD_STATE_HIDE = -2;
    //初始化软键盘
    public static final byte KEYBOARD_STATE_INIT = -1;
    private boolean mHasInit;
    private boolean mHasKeybord;
    private int mHeight;
    private onKeyboaddsChangeListener mListener;

    private int mScreenHeight;

    public KeyboardLayout(Context context) {
        super(context);
        init();
    }

    public KeyboardLayout(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public KeyboardLayout(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        //屏幕尺寸信息
        WindowManager wm = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
        if (null != wm) {
            DisplayMetrics outMetrics = new DisplayMetrics();
            wm.getDefaultDisplay().getMetrics(outMetrics);
            mScreenHeight = outMetrics.heightPixels;
        }
    }

    public void setOnkbdStateListener(onKeyboaddsChangeListener listener) {
        mListener = listener;
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
        if (b >= mScreenHeight) {
            //bottom的尺寸必须小于屏幕尺寸，一般来说都会小于，但测试发现，魅族手机会出现b==mScreenHeight，导致监听失败
            return;
        }
        if (!mHasInit) {
            mHasInit = true;
            mHeight = b;
            if (mListener != null) {
                mListener.onKeyBoardStateChange(KEYBOARD_STATE_INIT);
            }
        } else {
            mHeight = mHeight < b ? b : mHeight;
        }
        if (mHasInit && mHeight > b) {
            mHasKeybord = true;
            if (mListener != null) {
                mListener.onKeyBoardStateChange(KEYBOARD_STATE_SHOW);
            }
        }
        if (mHasInit && mHasKeybord && mHeight == b) {
            mHasKeybord = false;
            if (mListener != null) {
                mListener.onKeyBoardStateChange(KEYBOARD_STATE_HIDE);
            }
        }
    }

    public interface onKeyboaddsChangeListener {
        void onKeyBoardStateChange(int state);
    }
}

2、进行软键盘监听

要正常使用首先需要将KeyboardLayout作为跟布局进行监听，其次KeyboardLayout.onKeyboaddsChangeListener需要实现该接口，重写：

@Override
public void onKeyBoardStateChange(int state) {
    switch (state) {
        case KeyboardLayout.KEYBOARD_STATE_HIDE:
           //软键盘隐藏
            break;
        case KeyboardLayout.KEYBOARD_STATE_SHOW:
           //软键盘关闭
            break;
    }
}

3、Eidttext光标与软键盘显示设置

如果刚刚进来需要软键盘关闭，显示光标，则需要设置：

getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE
        | WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);

4、软键盘隐藏工具类

public static void showKeyboard(View view) {
    InputMethodManager imm = (InputMethodManager) view.getContext()
            .getSystemService(Context.INPUT_METHOD_SERVICE);
    if (imm != null) {
        view.requestFocus();
        imm.showSoftInput(view, 0);
    }
}

5、软键盘显示工具类

public static void hideKeyboard(View view){
    InputMethodManager imm = (InputMethodManager) view.getContext()
            .getSystemService(Context.INPUT_METHOD_SERVICE);
    if (imm != null) {
        imm.hideSoftInputFromWindow(view.getWindowToken(),0);
    }
}