在我的 Android 应用程序中，我创建了两个对话框 fragment 类。第一个对话框 fragment 提供了公司名称列表。单击主页上的按钮时将出现此对话框。此警报对话框有一个标题、listView 和一个取消按钮，如下所示 -
Company
Company 1
Company 2
Company 3
Cancel
现在，只要用户单击第一个对话框的每个项目，就会出现第二个对话框。第二个对话框包含标题“联系方式”、 ListView 和取消按钮。
Way of Contact
Phone
Email
Copy
现在第二次点击与第一次点击之间存在关系。如果用户点击公司 1，他将获得公司 1 的电话号码，如果用户点击公司 2，他将获得公司 2 的电话号码。电子邮件 ID 也会发生类似的情况。
到目前为止，我的代码硬编码太多。无论如何我已经实现了这段代码。但我对解决这个问题的方式并不满意。现在我想以面向对象的方式进行更多。我读过，公司的枚举可能是保持公司名称不变，然后使用电话和电子邮件创建映射的一种可能性。但我在开发领域还是个新手。如果有人告诉我如何做到这一点，这对我来说真的很有帮助。
这是我的 FirstDialog 类代码
编辑第一个对话框 fragment
public class FirstAlerDialogFragment extends DialogFragment {
private ListView listView;
private Button cancelButton;
private TextView title;
private ArrayAdapter<CompanyName> adapter;
public FirstAlerDialogFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setCancelable(true);
setStyle(DialogFragment.STYLE_NORMAL, R.style.DialogStyle);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.first_alertlist_contact, container, false);
//Button,ListView1 Initialization
listView=(ListView) rootView.findViewById(listView1);
cancelButton=(Button) rootView.findViewById(R.id.cancel_button);
title=(TextView)rootView.findViewById(R.id.title);
title.setText("Contact");
//Create and set Adepter TO ListView1
adapter=new ArrayAdapter<>(this.getActivity(),R.layout.first_alertlist_textstyle,R.id.Itemname,CompanyName.values());
listView.setAdapter(adapter);
cancelButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dismiss();
}
});
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// ListView Clicked item index
int itemPosition = position;
dismiss();
FragmentManager fm = getFragmentManager();
Bundle args = new Bundle();
args.putInt("position", itemPosition);
SecondAlertDialogFragment dialogFragment = new SecondAlertDialogFragment ();
dialogFragment.show(fm, "dialogFragment");
dialogFragment.setArguments(args);
dialogFragment.show(getChildFragmentManager(), null);
}
});
return rootView;
}
}
编辑第二个对话框
public class ContactWayFragment extends DialogFragment{
private ListView listView;
private Button cancelButton;
private String[] contactWay;
private TextView title;
private ArrayAdapter<String> adapter;
private String phoneNumber, email;
public ContactWayFragment() {
//Empty Constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setCancelable(true);
setStyle(DialogFragment.STYLE_NORMAL, R.style.DialogStyle);
}
private Company[] companies = new Company[] {
new Company("123", "mail1.com"),
new Company("456", "mail2.com"),
new Company("789", "mail3.com"),
new Company("102", "mail4.com"),
new Company("458", "mail5.com"),
new Company("977", "mail6.com")
};
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle args) {
View rootView = inflater.inflate(R.layout.first_alertlist_contact, container, false);
//Button,ListView1 Initialization
listView=rootView.findViewById(R.id.listView);
cancelButton=rootView.findViewById(R.id.cancel_button);
title=rootView.findViewById(R.id.title);
title.setText("What do you want to do");
// Defined Array values to show in ListView
contactWay = getResources().getStringArray(R.array.contact_way);
//Create and set Adepter TO ListView1
adapter=new ArrayAdapter<>(getActivity(), R.layout.first_alertlist_textstyle,android.R.id.text1,contactWay);
listView.setAdapter(adapter);
//cancel button to cancel this alert dialog
cancelButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dismiss();
}
});
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// ListView Clicked item index
Bundle args = getArguments();
int itemPosition = args.getInt("position");
Company company = companies[itemPosition];
if (position == 0) {
//dismiss();
//Phone Call Alert
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Calling to " + company.getPhoneNumber());
builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//make a phone call
dialog.dismiss();
Log.e("getActivity()-Call",""+getActivity());
call_action();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// Do nothing
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
if (position == 1) {
dismiss();
//Email Alert Dialog
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Email to " + company.getEmail());
builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// Do nothing
dialog.dismiss();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// Do nothing
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
if (position == 2) {
dismiss();
Toast.makeText(getActivity(), "click 2", Toast.LENGTH_SHORT).show();
}
if (position == 3) {
dismiss();
Toast.makeText(getActivity(), "click 3", Toast.LENGTH_SHORT).show();
}
}
});
return rootView;
}
public void call_action() {
...
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
....
}
}
}
编辑后的代码
在答案代码的帮助下，我更改了代码示例
public enum CompanyName {
COM1("FirstCompany"),
COM2("SecondCompany"),
COM3("ThirdCompany");
private final String name;
private CompanyName(String name){
this.name=name;
}
public String getName(){
return this.name;
}
@Override
public String toString() {
return name;
}
}
公司模型类是
public class Company {
private CompanyName name;
private String phone;
private String email;
public Company(String phone, String email) {
this.phone = phone;
this.email = email;
}
public CompanyName getName() {
return name;
}
public void setName(CompanyName name) {
this.name = name;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
最佳答案
确实，那个 switch/case 看起来有点硬编码。您可以做的是使用包含每个公司信息的对象数组。
这将是您的公司模型对象:
public class Company {
String phoneNumber, email;
public Company(String phoneNumber, String email) {
this.phoneNumber = phoneNumber;
this.email = email;
}
public String getPhoneNumber() {
return phoneNumber;
}
public String getEmail() {
return email;
}
}
这将是数组声明:
private Company[] companies = new Company[] {
new Company("38888180", "email1.com"),
new Company("411660", "email2.com"),
new Company("895402260", "email3.com")
};
最后，要访问电子邮件或电话号码，您只需执行以下操作:
...
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// ListView Clicked item index
Bundle args = getArguments();
//args = getArguments();
int itemPosition = args.getInt("position");
Company company = companies[itemPosition];
...
builder.setTitle("Calling to " + company.getPhoneNumber());
...
builder.setTitle("Calling to " + company.getEmail());
关于java - 为 Android 警报对话框创建模型类，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45469537/