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Mon nom est Amaya, et je suis nouveau dans java et Android Studio. Je construis un système expert pour mon projet de classe finale, mais je suis coincé parce que mon RadioButton ou RadioGroups (pour être honnête, je ne savais pas lequel de ceux qui font l'erreur). En fait, je veux faire une chose simple, Si je vérifie certains de mes boutons radio, je peux obtenir des chaînes que je peux définir TextView dans une autre mise en page. ceci est ma première mise en page:RadioGroup.setOnCheckedChangeListener ne fonctionne pas et retourne null?
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/scrollView2" >
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_marginTop="10dp"
android:text="Isilah formulir pengecekan kesehatan dibawah ini sesuai dengan keadaan sapi anda!"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/textView3"
android:layout_marginBottom="10dp"/>
<View
android:layout_width="match_parent"
android:layout_height="2dp"
android:background="#AFAFAF"
android:layout_marginRight="13dp"
android:layout_marginLeft="2dp"
android:layout_marginBottom="5dp"
/>
<TextView
android:text="Nafsu makan:"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/x1" />
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="@+id/a"
android:onClick="onRGClick">
<RadioButton
android:text="Normal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/a1" />
<RadioButton
android:text="Tidak normal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/a2" />
</RadioGroup>
<TextView
android:layout_marginTop="15dp"
android:text="Cungur hidung:"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/textView4" />
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="@+id/b"
android:onClick="onRGClick">
<RadioButton
android:text="Basah"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/b1" />
<RadioButton
android:text="Tidak basah"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/b2" />
</RadioGroup>
<TextView
android:layout_marginTop="15dp"
android:text="Feses sapi:"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/textView3" />
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="@+id/c"
android:onClick="onRGClick">
<RadioButton
android:text="Tidak ada"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/c1" />
<RadioButton
android:text="Normal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/c2" />
<RadioButton
android:text="Lembek"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/c3" />
<RadioButton
android:text="Mencret"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/c4" />
</RadioGroup>
<TextView
android:layout_marginTop="15dp"
android:text="Ada lendir dari hidung?"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/textView3" />
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="@+id/d"
android:onClick="onRGClick">
<RadioButton
android:text="Ada"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/d1" />
<RadioButton
android:text="Tidak"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/d2" />
</RadioGroup>
<TextView
android:layout_marginTop="15dp"
android:text="Frekuensi pernafasan:"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/textView3" />
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="@+id/e"
android:onClick="onRGClick">
<RadioButton
android:text="Normal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/e1" />
<RadioButton
android:text="Dipercepat"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/e2" />
</RadioGroup>
<Button
android:layout_marginTop="15dp"
android:text="Proses"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/proses"
android:layout_weight="1.00"
android:layout_gravity="center"
android:background="@color/colorBackground"
android:textColor="#FFFFFF"
android:textStyle="bold" />
</LinearLayout>
</ScrollView>
</LinearLayout>
ce qui est java pour la mise en page:
import android.content.DialogInterface;
import android.content.Intent;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.Toast;
public class sehat extends AppCompatActivity {
public RadioGroup[] radio = new RadioGroup[14];
public RadioButton[] radiobutton = new RadioButton[29];
public RadioButton a1,a2,b1,b2,c1,c2,c3,c4,d1,d2,e1,e2,f1,f2,g1,g2,h1,h2,i1,i2,j1,j2,j3,k1,k3,k2,l1,l2,l3;
public Button Kembali, proses;
public String t0,t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11, t12;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sehat);
//iki();
proses = (Button) findViewById(R.id.proses);
//radiobutton
a1 = (RadioButton) findViewById(R.id.a1);
a2 = (RadioButton) findViewById(R.id.a2);
b1 = (RadioButton) findViewById(R.id.b1);
b2 = (RadioButton) findViewById(R.id.b2);
c1 = (RadioButton) findViewById(R.id.c1);
c2 = (RadioButton) findViewById(R.id.c2);
c3 = (RadioButton) findViewById(R.id.c3);
c4 = (RadioButton) findViewById(R.id.c4);
d1 = (RadioButton) findViewById(R.id.d1);
d2 = (RadioButton) findViewById(R.id.d2);
e1 = (RadioButton) findViewById(R.id.e1);
e2 = (RadioButton) findViewById(R.id.e2);
f1 = (RadioButton) findViewById(R.id.f1);
f2 = (RadioButton) findViewById(R.id.f2);
g1 = (RadioButton) findViewById(R.id.g1);
g2 = (RadioButton) findViewById(R.id.g2);
h1 = (RadioButton) findViewById(R.id.h1);
h2 = (RadioButton) findViewById(R.id.h2);
i1 = (RadioButton) findViewById(R.id.i1);
i2 = (RadioButton) findViewById(R.id.i2);
j1 = (RadioButton) findViewById(R.id.j1);
j2 = (RadioButton) findViewById(R.id.j2);
j3 = (RadioButton) findViewById(R.id.j3);
k1 = (RadioButton) findViewById(R.id.k1);
k2 = (RadioButton) findViewById(R.id.k2);
k3 = (RadioButton) findViewById(R.id.k3);
l1 = (RadioButton) findViewById(R.id.l1);
l2 = (RadioButton) findViewById(R.id.l2);
l3 = (RadioButton) findViewById(R.id.l3);
//RadioGroup
radio[0] = (RadioGroup) findViewById(R.id.a);
radio[1] = (RadioGroup) findViewById(R.id.b);
radio[2] = (RadioGroup) findViewById(R.id.c);
radio[3] = (RadioGroup) findViewById(R.id.d);
radio[4] = (RadioGroup) findViewById(R.id.e);
radio[5] = (RadioGroup) findViewById(R.id.f);
radio[6] = (RadioGroup) findViewById(R.id.g);
radio[7] = (RadioGroup) findViewById(R.id.h);
radio[8] = (RadioGroup) findViewById(R.id.i);
radio[9] = (RadioGroup) findViewById(R.id.j);
radio[10] = (RadioGroup) findViewById(R.id.k);
radio[11] = (RadioGroup) findViewById(R.id.l);
proses.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
AlertDialog.Builder builder1 = new AlertDialog.Builder(sehat.this);
builder1.setMessage("Apakah anda sudah yakin dengan semua pilihan yang diisi, dan ingin melihat hasil konsultasi?");
builder1.setCancelable(true);
builder1.setPositiveButton(
"Ya",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
if ((a1.isChecked() || a2.isChecked()) && (b1.isChecked() || b2.isChecked()) && (c1.isChecked() || c2.isChecked() || c3.isChecked() || c4.isChecked()) && (d1.isChecked() || d2.isChecked()) && (e1.isChecked() || e2.isChecked()) && (f1.isChecked() || f2.isChecked()) && (g1.isChecked() || g2.isChecked()) && (h1.isChecked() || h2.isChecked()) && (i1.isChecked() || i2.isChecked()) && (j1.isChecked() || j2.isChecked() || j3.isChecked()) && (k1.isChecked() || k2.isChecked() || k3.isChecked()) && (l1.isChecked() || l2.isChecked() || l3.isChecked())) {
radio[1].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.a1) {
t1 = "i";
} else if (checkedId == R.id.a2) {
t1 = "yo a2";
t0 = "Tidak Normal";
}
}
});
radio[2].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.b1) {
t2 = "yo a1";
t0 = "Tidak Normal";
} else if (checkedId == R.id.b2) {
t2 = "i";
}
}
});
radio[3].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.c1) {
t3 = "yo a1";
t0 = "Tidak Normal";
} else if (checkedId == R.id.c2) {
t3 = "i";
}
else if (checkedId == R.id.c3) {
t3 = "yo a2";
t0 = "Tidak Normal";
}
else if (checkedId == R.id.c4){
t3 = "yo a2";
t0 = "Tidak Normal";
}
}
});
radio[4].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.d1) {
t4 = "yo a1";
t0 = "Tidak Normal";
} else if (checkedId == R.id.d2) {
t4 = "i";
}
}
});
radio[5].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.e1) {
t5 = "i";
} else if (checkedId == R.id.e2) {
t5 = "";
t0 = "Tidak Normal";
}
}
});
radio[6].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.f1) {
t6 = "yo yo";
t0 = "Tidak Normal";
} else if (checkedId == R.id.f2) {
t6 = "i";
}
}
});
radio[7].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.g1) {
t7 = "yo yo";
t0 = "Tidak Normal";
} else if (checkedId == R.id.g2) {
t7 = "i";
}
}
});
radio[8].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.h1) {
t8 = "yo yo";
t0 = "Tidak Normal";
} else if (checkedId == R.id.h2) {
t8 = "i";
}
}
});
radio[9].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.i1) {
t9 = "i";
} else if (checkedId == R.id.i2) {
t9 = "yo yo";
t0 = "Tidak Normal";
}
}
});
radio[10].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.j1) {
t10 = "i";
} else if (checkedId == R.id.j2) {
t10 = "yo yo";
t0 = "Tidak Normal";
}
else if (checkedId == R.id.j3) {
t10 = "yo yo";
t0 = "Tidak Normal";
}
}
});
radio[11].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.k1) {
t11 = "i";
} else if (checkedId == R.id.k2) {
t11 = "yo yo";
t0 = "Tidak Normal";
}
else if (checkedId == R.id.k3) {
t11 = "yo yo";
t0 = "Tidak Normal";
}
}
});
radio[12].setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.l1) {
t12 = "i";
} else if (checkedId == R.id.l2) {
t12 = "yo yo";
t0 = "Tidak Normal";
}
else if (checkedId == R.id.l3){
t12 = "yo yo";
t0 = "Tidak Normal";
}
}
});
Intent i = new Intent(getApplicationContext(), Informasi_Sehat.class);
startActivity(i);
} else {
Toast.makeText(getApplicationContext(), "Anda harus menjawab semua pertanyaan terlebih dahulu", Toast.LENGTH_LONG).show();
}
}
});
builder1.setNegativeButton(
"Belum",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert11 = builder1.create();
alert11.show();
}
});
Button btn_kembalihome = (Button) findViewById(R.id.kembalihomed);
btn_kembalihome.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
finish();
}
});
}
}
le message d'erreur est:
tentative d'invoquer la méthode virtuelle « vide android.widget .RadioGroup.setOnCheckedChangeListener (android.widget.RadioGroup $ OnCheckedChangeListener) ' sur une référence d'objet null
L'erreur de programme lorsque j'ajoute radio[1].setOnCheckedChangeListener bla bla bla. J'espère que vous pouvez m'aider. C'est mon résultat java si c'est nécessaire.
public class Informasi_Sehat extends Activity {
public TextView tt0,tt1,tt2,tt3,tt4,tt5,tt6,tt7,tt8,tt9,tt10,tt11,tt12;
public String t0,t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11, t12;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.informasi_sehat);
iku();
((Button) findViewById(R.id.btn_kembalihome)).setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
finish();
}
});
}
public void iku(){
tt0 = (TextView) findViewById(R.id.namaSpecies);
tt1 = (TextView) findViewById(R.id.namaDeskripsi1);
tt2 = (TextView) findViewById(R.id.namaDeskripsi2);
tt3 = (TextView) findViewById(R.id.namaDeskripsi3);
tt4 = (TextView) findViewById(R.id.namaDeskripsi4);
tt5 = (TextView) findViewById(R.id.namaDeskripsi5);
tt6 = (TextView) findViewById(R.id.namaDeskripsi6);
tt7 = (TextView) findViewById(R.id.namaDeskripsi7);
tt8 = (TextView) findViewById(R.id.namaDeskripsi8);
tt9 = (TextView) findViewById(R.id.namaDeskripsi9);
tt10 = (TextView) findViewById(R.id.namaDeskripsi10);
tt11 = (TextView) findViewById(R.id.namaDeskripsi11);
tt12 = (TextView) findViewById(R.id.namaDeskripsi12);
tt0.setText(String.valueOf(t0));
tt1.setText(String.valueOf(t1));
tt2.setText(String.valueOf(t2));
tt3.setText(String.valueOf(t3));
tt4.setText(String.valueOf(t4));
tt5.setText(String.valueOf(t5));
tt6.setText(String.valueOf(t6));
tt7.setText(String.valueOf(t7));
tt8.setText(String.valueOf(t8));
tt9.setText(String.valueOf(t9));
tt10.setText(String.valueOf(t10));
tt11.setText(String.valueOf(t11));
tt12.setText(String.valueOf(t12));
}
}
Merci. Je suis désolé si ma grammaire est mauvaise.
Voulez-vous dire l'erreur est parce que je déclare le mauvais type de variables? Comme le vrai est-il possible de ne pas la chaîne? –