[Java] "java.lang.RuntimeException: Unable to start activity ComponentInfo" 해결


[Java]

문제상황: 에러가 발생한 코드와 이에 대한 설명: MainActivity.java public class MainActivity extends AppCompatActivity { private Button btnShow; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); btnShow = findViewById(R.id.btnShow); btnShow.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) ..


원문링크 : [Java] "java.lang.RuntimeException: Unable to start activity ComponentInfo" 해결