回收者视图隐藏，只有在单击下面的EditText时才可见

import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

    private EditText editText;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        editText = findViewById(R.id.editText);

        editText.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showSoftKeyboard();
            }
        });
    }

    private void showSoftKeyboard() {
        InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        inputMethodManager.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT);
    }
}