如何使代码运行LoginActivity.java

获取setonclicklistener和View对象中的错误

     public class LoginActivity extends AppCompatActivity {
       @Override
       protected void onCreate(Bundle savedInstanceState) {
                  super.onCreate(savedInstanceState);
                  setContentView(R.layout.activity_login);

            final TextView etUsername= (TextView) findViewById(R.id.etUsername);
            final TextView etPassword= (TextView) findViewById(R.id.etPassword);

            final Button bLogin = (Button) findViewById(R.id.bLogin);
            final TextView registerLink = (TextView) findViewById(R.id.tvRegisterHere);

            registerLink.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Intent registerIntent = new Intent(LoginActivity.this, RegisterActivity.class);
                    LoginActivity.this.startActivity(registerIntent);

                        ImageView myimageview =(ImageView) findViewById(R.id.myimageview);
                        myimageview.setImageResource(R.drawable.farm1);
                }
            }

            );

        }

用

public class LoginActivity extends AppCompatActivity {

    @Override
 super.onCreate(savedInstanceState){
setContentView(R.layout.activity_login);

final TextView etUsername= (TextView) findViewById(R.id.etUsername);
final TextView etPassword= (TextView) findViewById(R.id.etPassword);

final Button bLogin = (Button) findViewById(R.id.bLogin);
final TextView registerLink = (TextView) findViewById(R.id.tvRegisterHere);

registerLink.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        Intent registerIntent = new Intent(LoginActivity.this, RegisterActivity.class);
        LoginActivity.this.startActivity(registerIntent);

    }
}

);

---

}尝试删除此行

ImageView myimageview =(ImageView) findViewById(R.id.myimageview);
                myimageview.setImageResource(R.drawable.farm1);

在我看来，在移动活动后，停止执行与以前活动相关的UI呈现

在setonclicklistener和View对象中获取错误

您得到的错误是什么？您可以与问题共享该错误吗