Android 活动中的软键盘打开和关闭侦听器

XML
<LinearLayout XMLns:Android="http://schemas.Android.com/apk/res/Android"</p>    XMLns:tools="http://schemas.Android.com/tools"
    Android:layout_width="match_parent"
    Android:layout_height="match_parent"
    Android:orientation="vertical"
    Android:padding="16dp"
    tools:context=".MAInActivity">
    <EditText</p>        Android:id="@+id/editText"
        Android:layout_width="match_parent"
        Android:layout_height="wrap_content"
        Android:inputType="text" />
</LinearLayout>

Java
import Android.app.Activity;
import Android.os.Bundle;
import Android.view.View;
import Android.view.inputmethod.InputMethodManager;
import Android.widget.EditText;
public class MAInActivity extends Activity {
    private EditText editText;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setcontentView(R.layout.activity_mAIn);
        editText = findViewById(R.id.editText);
        editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                InputMethodManager imm = (InputMethodManager) getSystemService(Activity.INPUT_METHOD_SERVICE);
                if (hasFocus) {
                    imm.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT);
                } else {
                    imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);
                }
            }
        });
    }
}

XML
<activity</p>    Android:name=".MAInActivity"
    Android:windowSoftInputMode="adjustResize" />