无法解析符号'Spinner'

Question

I'm just trying to screw around in Android Studio and at the moment, I'm trying to figure out how to get the selected text of a spinner.

Here is my relevant code

package dgameman1.com.emojifixer;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);    

        Spinner  emojiSpinner = (Spinner)findViewById(R.id.emojiSpinner);
        final String selectedSpinnerText = emojiSpinner.getSelectedItem().toString();
        Button installNewEMojis = (Button) findViewById(R.id.installEmojisButton);
        installNewEMojis.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, selectedSpinnerText, Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();

            }
        });


    }

}

The issue I have right now is with this

Spinner  emojiSpinner = (Spinner)findViewById(R.id.emojiSpinner);
String selectedSpinnerText = emojiSpinner.getSelectedItem().toString();

'Spinner' is a red color and when I over my mouse over it, I get the error

Cannot resolve symbol 'Spinner'

Answer 1

Cannot resolve symbol 'Spinner'

This means that the class has not been imported properly .

At First import R

import dgameman1.com.emojifixer.R

Then add this in your import section

import android.widget.Spinner;

Then Clean-Rebuild-Restart Your Project .

Let me know if that works. If it doesn't, there are other possible solutions I can add.

Answer 2

你需要导入android.widget.Spinner

Answer 3

如果您不想导入任何内容，请更改代码。

android.widget.Spinner emojiSpinner = (android.widget.Spinner)findViewById(R.id.emojiSpinner);