I can not see the ListView

Question

I can not see the ListView

Navigation

#1 by (3 votes)

1

#

importandroid.os.Bundle;importandroid.support.v7.app.AppCompatActivity;importandroid.support.v7.widget.Toolbar;importandroid.view.View;importandroid.widget.Button;publicclassMainActivityextendsAppCompatActivity{@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Toolbartoolbar=(Toolbar)findViewById(R.id.toolbar);setSupportActionBar(toolbar);Buttonbotaoespecialidades=(Button)findViewById(R.id.botaoespecialidades);botaoespecialidades.setOnClickListener(newView.OnClickListener(){publicvoidonClick(Viewarg0){CarregaTela2();}});}publicvoidCarregaTela2(){setContentView(R.layout.activity_especialidades);}}

#

publicclassEspecialidadesextendsAppCompatActivity{@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_especialidades);Toolbartoolbar=(Toolbar)findViewById(R.id.toolbar);setSupportActionBar(toolbar);String[]atividades=newString[]{"Especialidades 1", "Especialidades 2", "Especialidades 3"};

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, atividades);

    ListView lv = (ListView) findViewById(R.id.lv);
    lv.setAdapter(adapter);
    lv.setOnItemClickListener(chamaAtividades(this));
}

    public AdapterView.OnItemClickListener chamaAtividades(final Context context){
        return (new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> av, View v, int position, long id) {

                Intent intent;
                switch(position){
                    case 0:
                        intent = new Intent(context, Atividade1.class);
                        startActivity(intent);
                        break;
                    case 1:
                        intent = new Intent(context, Atividade2.class);
                        startActivity(intent);
                        break;
                }


            }
        });
    }

    public void  btsair(View view){
        finish();

    }
}

android listview

asked by anonymous 22.10.2015 / 01:46

1 answer

Jquery does not return second image in list Incorrect date on return of json

score 3 · Accepted Answer

In the CarregaTela2() method, you must create an Intent to launch the Activity Specialties. What you're doing is just changing the layout that MainActivity presents.

Change method like this:

public void CarregaTela2() {
    intent = new Intent(this, Especialidades.class);
    startActivity(intent);
}