问题描述
以下代码的11和12行的this
,以及倒数第四行的@Override
都有红波浪线,报错信息是:
setOnClickListener(android.view.View.OnClickListener) in View cannot be applied to
(com.example.YourUserName.YourModuleName.MainActivity)
public class MainActivity extends AppCompatActivity {
...
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
...
imgChooseButton.setOnClickListener(this);
startColoringButton.setOnClickListener(this);
}
@Override
public void onClick(View v){
}
解决方法
MainActivity
类的定义应当为:
public class MainActivity extends AppCompatActivity implements View.OnClickListener
更正后的完整代码如下:
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
...
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
...
imgChooseButton.setOnClickListener(this);
startColoringButton.setOnClickListener(this);
}
@Override
public void onClick(View v){
}