Welcome toVigges Developer Community-Open, Learning,Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
3.5k views
in Technique[技术] by (71.8m points)

java - Unexpected implicit cast to Button: layout tag was TextView

I cannot get it I have tried somethings like appcompat but not worked. Cannot figure out how to solve it.

public class MainActivity extends AppCompatActivity {


    private Button button;
    private TextView textView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = findViewById(R.id.showName);  ---> Here it is giving the problem.
        textView = findViewById(R.id.textView);
        textView.setText("Hello from Java!!");
    }
}

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

It seems to showName is TextView, not Button, but I'm not sure. Please check xml and change TextView to Button.

Please upload your xml.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to Vigges Developer Community for programmer and developer-Open, Learning and Share

2.1m questions

2.1m answers

63 comments

56.6k users

...