package w.myapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Random;
import java.util.StringTokenizer;
public class Main2Activity extends AppCompatActivity {
int p1=10, p2=10, p3=10;
int count = 0;
int v1, v2, v3, vie;
String te1, te2;
int strcou = 0, balcou = 0;
String var;
boolean first = true;
int[][] whatnum = {{0,0,0,0,1,0},{1,0,0,0,1,0},{2,0,0,0,1,0},{3,0,0,0,1,0},{4,0,0,0,1,0},{5,0,0,0,1,0},{6,0,0,0,1,0},{7,0,0,0,1,0},{8,0,0,0,1,0},{9,0,0,0,1,0}};
Random ran = new Random();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
final Button com = (Button)findViewById(R.id.button2);
final EditText user = (EditText) findViewById(R.id.editText);
final TextView tv = (TextView) findViewById(R.id.textView);
final TextView tv2 = (TextView)findViewById(R.id.textView2);
com.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
p1 = ran.nextInt(10);
Log.d("First Num", ""+p1);
p2 = ran.nextInt(10);
Log.d("Second Num", ""+p2);
p3 = ran.nextInt(10);
Log.d("Three Num", ""+p3);
while(count == 0){
if(p1 == p2 || p2 == p3 || p3 == p1 || p1 == 0 || whatnum[p1][5] == 1 || whatnum[p2][5] == 1 || whatnum[p3][5] == 1){
p1 = ran.nextInt(10);
p2 = ran.nextInt(10);
p3 = ran.nextInt(10);
}else{
break;
}
}
v1 = p1 * 100;
v2 = p2 * 10;
v3 = p3;
vie = v1+v2+v3;
te1 = Integer.toString(vie);
Log.d("PC num", ""+te1);
tv2.setText(te1);
com.setText("compare!!");
if(first == true){
tv.setText("스트라이크는?");
if(user.getText().equals(null)){ //여기 오류남
Toast.makeText(Main2Activity.this, "아무값도 입력되지 않음", Toast.LENGTH_SHORT).show();
}else{
strcou = Integer.parseInt(user.getText().toString());
}
}else{
tv.setText("볼은?");
balcou = Integer.parseInt(user.getText().toString());
}
if(balcou + strcou == 0){
whatnum[v1][5] = 1;
whatnum[v1][4] = 0;
whatnum[v2][5] = 1;
whatnum[v2][4] = 0;
whatnum[v3][5] = 1;
whatnum[v3][4] = 0;
}
}
});
}
}
이 코드에서 주석친 부분에서 오류가 납니다.
에러코는
E/AndroidRuntime: FATAL EXCEPTION: main
Process: w.myapplication, PID: 3131
java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference
at w.myapplication.Main2Activity$1.onClick(Main2Activity.java:64)
at android.view.View.performClick(View.java:6597)
at android.view.View.performClickInternal(View.java:6574)
at android.view.View.access$3100(View.java:778)
at android.view.View$PerformClick.run(View.java:25885)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
입니다
