My image does not appear in ImageView

I'm looking for the image on SdCard. Everything works fine, opens the gallery, selects the image, but the selected image does not appear in ImageView.

Code:

public void btnFoto(View view){
    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.setType("image/*");
    startActivityForResult(intent, IMAGEM_INTERNA);
}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent){
    if(requestCode == IMAGEM_INTERNA){

        if(resultCode == RESULT_OK){
            Uri imagemSelecionada = intent.getData();

            String[] colunas = {MediaStore.Images.Media.DATA};

            Cursor cursor = getContentResolver().query(imagemSelecionada, colunas, null, null, null);
            cursor.moveToFirst();

            int indexColuna = cursor.getColumnIndex(colunas[0]);
            String pathImg = cursor.getString(indexColuna);
            cursor.close();

            Bitmap bitmap = BitmapFactory.decodeFile(pathImg);
            ImageView iv = (ImageView) findViewById(R.id.imgEvento);
            iv.setImageBitmap(bitmap);
        }
    }

Layout:

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Cadastro de Evento"
    android:id="@+id/textView2"
    android:layout_gravity="center_horizontal"
    style="@style/estilo"
    android:layout_marginBottom="25dp"
    android:textStyle="bold" />

<TextView
    style="@style/estilo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Título"
    android:id="@+id/txtTitulo" />

<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/edtTitulo"
    style="@style/comprimento"
    android:background="@drawable/bordas_edit"/>

<TextView
    style="@style/estilo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Descrição"
    android:id="@+id/txtDescricao" />

<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/edtDescricao"
    style="@style/comprimento"
    android:background="@drawable/bordas_edit"/>

<TextView
    style="@style/estilo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Data"
    android:id="@+id/txtData" />

<EditText
    android:layout_width="190dp"
    android:layout_height="wrap_content"
    android:inputType="date"
    android:ems="10"
    android:id="@+id/edtData"
    style="@style/comprimento"
    android:background="@drawable/bordas_edit"/>

<TextView
    style="@style/estilo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Horário"
    android:id="@+id/txtHorario" />

<EditText
    android:layout_width="190dp"
    android:layout_height="wrap_content"
    android:inputType="time"
    android:ems="10"
    android:id="@+id/edtHorario"
    style="@style/comprimento"
    android:background="@drawable/bordas_edit"/>

<TextView
    style="@style/estilo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Local"
    android:id="@+id/txtLocal" />

<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/edtLocal"
    style="@style/comprimento"
    android:background="@drawable/bordas_edit"/>

<TextView
    style="@style/estilo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Pontos de venda"
    android:id="@+id/textView3" />

<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/edtPontoVenda"
    style="@style/comprimento"
    android:background="@drawable/bordas_edit"
    android:layout_marginBottom="15dp"/>

<TableRow
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="right">

    <Button
    android:id="@+id/btnFoto"
    android:layout_width="wrap_content"
    android:layout_height="60dp"
    android:layout_marginLeft="20dp"
    android:text="Foto"
    android:textColor="#FFF"
    android:textSize="10dp"
    android:drawableLeft="@drawable/ic_save"
    android:background="@drawable/botao"
    android:layout_gravity="right"
    android:onClick="btnFoto"/>

    <Button
        android:id="@+id/btnSalvar"
        android:layout_width="wrap_content"
        android:layout_height="60dp"
        android:layout_marginLeft="20dp"
        android:text="  Salvar"
        android:textColor="#FFF"
        android:textSize="10dp"
        android:drawableLeft="@drawable/ic_save"
        android:background="@drawable/botao" />

    <ImageView
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:id="@+id/imgEvento" />
</TableRow>