[英]Create a Model Class for Alert Dialog Android
在我的Android應用程序中,我創建了兩個對話框片段類。 第一個對話框片段提供了公司名稱的列表。 該對話框將出現在主頁上的單擊按鈕上。 此警報對話框具有一個標題,listView和一個“取消”按鈕,如下所示:
Company
Company 1
Company 2
Company 3
Cancel
現在,一旦用戶單擊第一個對話框的每個項目,就會出現第二個對話框。 第二對話包含標題“聯系方式”,列表視圖和取消按鈕。
Way of Contact
Phone
Email
Copy
現在,第二次單擊與第一次單擊之間存在關系。 如果用戶單擊公司1,則將獲得公司1的電話號碼;如果用戶單擊公司2,則將獲得公司2的電話號碼。類似的情況將發生在電子郵件ID上。
到目前為止,我的代碼已經過硬編碼。 無論如何,我已經實現了此代碼。 但是我不滿意解決這個問題的方式。 現在,我想以面向對象的方式進行更多工作。 我已經讀到,公司的Enum將是保持公司名稱不變,然后使用電話和電子郵件創建Mapping的一種可能性。 但是我在發展領域是個新手。 如果有人告訴我該怎么做對我來說真的很有幫助。
這是我的FirstDialog類的代碼
編輯的第一個對話框片段
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;
}
}
編輯第二個對話框
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) {
....
}
}
}
編輯代碼
借助應答代碼,我更改了代碼示例
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;
}
}
公司模型類是
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;
}
}
確實,該開關/外殼看上去有點硬編碼。 您可以做的是使用帶有每個公司信息的對象數組。
這將是您的Company模型對象:
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;
}
}
這將是數組聲明:
private Company[] companies = new Company[] {
new Company("38888180", "email1.com"),
new Company("411660", "email2.com"),
new Company("895402260", "email3.com")
};
最后,要訪問電子郵件或電話號碼,您只需執行以下操作:
...
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());
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