可能是因为代码折叠功能引起的。在Android Studio中,我们可以通过点击左侧面板中的“-”号来折叠代码,并通过点击“+”号来展开代码。如果您的代码块被折叠了,您可能只能看到摘要代码,因此您应该尝试展开代码块。
另外,您也可以尝试修复Android Studio的错误日志,以便重新加载应用程序代码。
以下是在Android Studio中展开代码块的代码示例:
public class MainActivity extends AppCompatActivity { private EditText editTextName; private EditText editTextEmail; private EditText editTextPassword; private Button buttonSubmit;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editTextName = findViewById(R.id.edit_text_name);
editTextEmail = findViewById(R.id.edit_text_email);
editTextPassword = findViewById(R.id.edit_text_password);
buttonSubmit = findViewById(R.id.button_submit);
// add click listener to the submit button
buttonSubmit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String name = editTextName.getText().toString().trim();
String email = editTextEmail.getText().toString().trim();
String password = editTextPassword.getText().toString().trim();
// validate inputs
if (TextUtils.isEmpty(name)) {
editTextName.setError("Name is required");
editTextName.requestFocus();
return;
}
if (TextUtils.isEmpty(email)) {
editTextEmail.setError("Email is required");
editTextEmail.requestFocus();
return;
}
if (TextUtils.isEmpty(password)) {
editTextPassword.setError("Password is required");
editTextPassword.requestFocus();
return;
}
// do something with the inputs
}
});
}
}