java - 当方向设置为纵向时隐藏键盘

Question

我最接近的是:

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT)
    {
        InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        inputMethodManager.hideSoftInputFromWindow(input.getWindowToken(), 0);
    }
    //Some other code
}

但这行不通。在这种情况下，即使没有输入焦点，一旦方向更改为纵向，键盘也会被拉起。

Answer 1

使用此实用程序监听器代码

import android.app.Activity;
import android.view.View;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;

public class KeyboardUtil implements OnGlobalLayoutListener {
static public interface KeyboardListener {
    public void onKeyboardVisible(boolean visible);
}

private int mHeight;
private boolean mVisible;
private View mRootView;
private KeyboardListener mListener;

public KeyboardUtil(Activity activity) {
    mVisible = false;
    mHeight = 0;
    if (activity == null) {
        return;
    }
    try {
        mRootView = activity.getWindow().getDecorView()
                .findViewById(android.R.id.content);
        mRootView.getViewTreeObserver().addOnGlobalLayoutListener(this);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

public void setListener(KeyboardListener listener) {
    this.mListener = listener;
}

@Override
public void onGlobalLayout() {
    if (mHeight == 0) {
        mHeight = mRootView.getMeasuredHeight();
        return;
    }

    if (mListener == null) {
        return;
    }

    int height = mRootView.getHeight();

    if (!mVisible && mHeight > (height + 100)) {
        mVisible = true;
        mListener.onKeyboardVisible(mVisible);
        mHeight = height;
    } else if (mVisible && mHeight < (height - 100)) {
        mVisible = false;
        mListener.onKeyboardVisible(mVisible);
        mHeight = height;
    }
}
}

以下代码在您的 Activity 中使用

new KeyboardUtil(context).setListener(keyboardListener);

KeyboardUtil.KeyboardListener keyboardListener = new KeyboardUtil.KeyboardListener() {
    @Override
    public void onKeyboardVisible(boolean visible) {
     // get configuration here and 
     if(config is portrait)
         hideSoftKeyboard(this); // Provide you activity context
    }
};

public static void hideSoftKeyboard(Activity activity) {
    InputMethodManager inputMethodManager = (InputMethodManager) activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
    inputMethodManager.hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(), 0);
}