我正在做一个应用程序,当我加载活动时从查询加载数据,我有一个按钮来加载其他查询。当我为按钮eclipse编写监听器时,会出现以下错误:syntax error on token(s), misplaced construct(s)
。我为侦听器编写了构造函数方法,并且错误不会消失。如果我忘记添加一个}
,我会寻找,但我认为这一切都很接近。
这是活动的代码。
import android.app.Activity;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.view.View.OnClickListener;
public class Examen extends Activity {
private TextView txtAsigExa;
private TextView txtTemaExa;
private TextView txtPreguntaExa;
private TextView txtRespuestaExa;
private Button btnVer;
private SQLiteDatabase db;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_examen);
Bundle bundle = this.getIntent().getExtras();
txtAsigExa=(TextView)findViewById(R.id.txtAsigExa);
txtTemaExa=(TextView)findViewById(R.id.txtTemaExa);
txtPreguntaExa=(TextView)findViewById(R.id.txtPreguntaExa);
txtRespuestaExa=(TextView)findViewById(R.id.txtRespuestaExa);
btnVer=(Button)findViewById(R.id.btnVer);
ExamenesSQLiteHelper ex4db=new ExamenesSQLiteHelper(this,"ExamenesDB",null,1);
db=ex4db.getWritableDatabase();
Cursor c=db.rawQuery("SELECT Preguntas.id Asignaturas.descripcion, Temas.descripcion, pregunta FROM Preguntas INNER JOIN Temas ON Preguntas.tema=Temas.id INNER JOIN Asignaturas ON Temas.id_as=Asignaturas.id WHERE tema='"+bundle.getString("Inicio")+"'",null);
if(c.moveToFirst()){
do{
String cod=c.getString(0);
String asignatura=c.getString(1);
String tem=c.getString(2);
String preg=c.getString(3);
txtAsigExa.setText(asignatura);
txtTemaExa.setText(tem);
txtPreguntaExa.setText(preg);
}while(c.moveToNext());
}
txtTemaExa.setText(bundle.getString("Inicio"));
btnVer.setOnClickListener(new OnClickListener{
public void onClick(View v){
Cursor c1=db.rarQuery("SELECT respuesta FROM Preguntas WHERE id='"+cod+"'", null);
if(c1.moveToFirst()){
do{
String resp=c1.getString(0);
txtRespuestaExa.append(resp);
}while(c1.moveToNext());
}
}
});
}
}
答案 0 :(得分:2)
您缺少方法括号:
btnVer.setOnClickListener(new OnClickListener{
应该是:
btnVer.setOnClickListener(new OnClickListener(){