已解决，请参阅我的回答以获取更多信息。
我一直在尝试在我的应用程序中添加一项功能，如果用户点击ListView的项目，它将显示自定义的DialogFragment。
问题是我无法找到有关如何实际显示此对话框的文档或答案。我尝试过fragment.show(getFragmentManager, "dialog")甚至是fragment.show(Activity.getFragmentManager, "dialog")和AppCompatActivity.getSupportedFragmentManager之类的变体（我的父活动来自AppCompatActivity）。
如果有一个解决方案，只使用视图/上下文这样做，那将是完美的！
我会粘贴我的代码，我希望它有一些用处，谢谢！
PS：抱歉代码不好
public class OSArrayAdapter extends ArrayAdapter<ServiceOrder>
{
private Context context;
private TextView statusTextView;
private ImageView directionsButton;
private ArrayList<String> statuses;
private ArrayList<String> addresses;
private ArrayList<ServiceOrder> infos;
public OSArrayAdapter(Context context, int resource, ArrayList<ServiceOrder> infos)
{
// Constructor
super(context, resource, infos);
this.context = context;
this.addresses = new ArrayList<>();
this.statuses = new ArrayList<>();
this.infos = infos;
// set values for the objects
for(ServiceOrder info : this.infos) {
this.addresses.add(info.getAddress());
this.statuses.add(info.getStatus());
}
}
public View getView(final int position, View currentView, ViewGroup parent)
{
// Called when rendering the list
// Get property we're displaying
String address = addresses.get(position);
String status = statuses.get(position);
// Get the inflater and inflate the XML for it
LayoutInflater inflater = (LayoutInflater) context.getSystemService(
Activity.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.os_list_view, null);
TextView addressTextView = (TextView) view.findViewById(R.id.address_text_view);
statusTextView = (TextView) view.findViewById(R.id.status_text_view);
directionsButton = (ImageView) view.findViewById(R.id.image_button_goto_map);
// Setting address in the text view
// Display "..." trimming the address if it's too long
if(address.length() > 34) {
address = address.substring(0, 30) + "...";
}
addressTextView.setText(address);
// Setting the status in the text view
try {
setStatus(status);
} catch(InvalidOptionException e) {
e.printStackTrace();
}
// Create and set the listener for the layout itself
view = createLayoutAndSetListener(view, address, "Severino de Maria",
"Problema no controle", "1234");
directionsButton.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
Intent intent = new Intent(context, MapsActivity.class);
intent.putExtra("position", position);
context.startActivity(intent);
}
});
// Finally, we return it!
return view;
}
private View createLayoutAndSetListener(View view, final String address, final String clientName,
final String serviceType, final String serviceCode)
{
view.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
// Define the dialog's properties
ServiceOrderInformationDialog dialog = ServiceOrderInformationDialog
.newInstance(address, clientName, serviceType, serviceCode);
dialog.show(getSupportFragmentManager(), "Informações");
}
});
return view;
}
@Override
public ServiceOrder getItem(int position)
{
return infos.get(position);
}
@TargetApi(Build.VERSION_CODES.KITKAT)
public void setStatus(String status) throws InvalidOptionException
{
Resources cResources = context.getResources();
if(Objects.equals(status, cResources.getString(R.string.terminado))) {
statusTextView.setText(status);
statusTextView.setTextColor(cResources.getColor(R.color.doneGreen));
} else if(Objects.equals(status, cResources.getString(R.string.pendente))) {
statusTextView.setText(status);
statusTextView.setTextColor(cResources.getColor(R.color.colorVivid));
} else {
throw new InvalidOptionException();
}
}
}
自定义DialogFragment
public class ServiceOrderInformationDialog extends BaseDialogFragment<ServiceOrderInformationDialog>
{
public static ServiceOrderInformationDialog newInstance(String address, String clientName,
String serviceType, String serviceCode)
{
// This is what we should use to create new dialogs, it'll let us set the values for
// the text fields (TextView) in our dialog
ServiceOrderInformationDialog frag = new ServiceOrderInformationDialog();
Bundle args = new Bundle();
args.putString("address", address);
args.putString("clientName", clientName);
args.putString("serviceType", serviceType);
args.putString("serviceCode", serviceCode);
frag.setArguments(args);
return frag;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState)
{
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
// Getting the Layout Inflater
LayoutInflater inflater = getActivity().getLayoutInflater();
// Get our view
View view = inflater.inflate(R.layout.dialog_service_order_information, null);
// Inflate the layout and set its design to the one we made
// Pass null as the parent view because it's going in the dialog layout
builder.setView(view);
// Set text values
String address = getArguments().getString("address", null);
String clientName = getArguments().getString("clientName", null);
String serviceType = getArguments().getString("serviceType", null);
String serviceCode = getArguments().getString("serviceCode", null);
// Defining the Text View fields
TextView addressTextView = (TextView)
view.findViewById(R.id.advanced_address_dialog);
TextView clientNameTextView = (TextView)
view.findViewById(R.id.advanced_client_name_dialog);
TextView serviceTypeTextView = (TextView)
view.findViewById(R.id.advanced_service_type_dialog);
TextView serviceCodeTextView = (TextView)
view.findViewById(R.id.advanced_service_code_dialog);
// Set text view values
addressTextView.setText(address);
clientNameTextView.setText(clientName);
serviceTypeTextView.setText(serviceType);
serviceCodeTextView.setText(serviceCode);
// return the created dialog
return builder.create();
}
}
答案 0 :(得分：0)
我明白了！
我需要做的就是将context转换为AppCompatActivity并从中获取支持片段。
Soo，当我们显示对话框时，我们现在：
dialog.show(((AppCompatActivity) context).getSupportFragmentManager(), "Informações);