How do I change from the second to the third screen ??
I was able to switch from screen1 to screen2 (from Main
to CadastroActivity
)
Except that, using the same code, I can not get from screen 2 to 3 (from CadastroActivity
to FormularioActivity
).
It compiles, but when I click the button, the app gives error and quits
How do I solve it?
I want to click the btn_cadastrar
(from CadastroActivity
) button and go to FormularioActivity
Java code:
package com.example.vanessa.projetoinicial_vanessa;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class CadastroActivity extends AppCompatActivity {
//private Button botaoCadastrar; //da tela Cadastro
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cadastro);
//Ao clicar no botão Cadastrar (da tela 2 Cadastro), deve ir para tela Formulario
Button botaoCadastrar = (Button) findViewById(R.id.btn_cadastrar);
botaoCadastrar.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(CadastroActivity.this, FormularioActivity.class);
startActivity(intent);
}
});
}
}
XML:
<LinearLayout
android:layout_width="368dp"
android:layout_height="624dp"
android:orientation="vertical"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp">
<ListView
android:id="@+id/lista_Madicamentos"
android:layout_width="match_parent"
android:layout_height="200dp" />
<Button
android:id="@+id/btn_cadastrar"
style="?attr/buttonStyle"
android:layout_width="match_parent"
android:layout_height="39dp"
android:background="?attr/colorPrimary"
android:text="CADASTRAR"
tools:layout_editor_absoluteX="16dp"
tools:layout_editor_absoluteY="528dp" />
</LinearLayout>
</RelativeLayout>
In LogCat:
10-13 01:09:24.954 17082-17082/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.vanessa.projetoinicial_vanessa, PID: 17082
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.vanessa.projetoinicial_vanessa/com.example.vanessa.projetoinicial_vanessa.FormularioActivity}: java.lang.ClassCastException: android.support.v7.widget.AppCompatTextView cannot be cast to android.widget.EditText
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.ClassCastException: android.support.v7.widget.AppCompatTextView cannot be cast to android.widget.EditText
at com.example.vanessa.projetoinicial_vanessa.FormularioActivity.onCreate(FormularioActivity.java:25)
at android.app.Activity.performCreate(Activity.java:7009)
at android.app.Activity.performCreate(Activity.java:7000)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Where is the error? Thank you so much.