如何实现此目的?当对话框片段被解除时刷新其他活动的片段
好吧,我有这个过程 在索引活动,当我点击侧导航配置文件,它会调用片段(配置文件)通片段交易现在
if (id == R.id.nav_profile){
FragmentTransaction transaction = getSupportFragmentManager()
.beginTransaction();
transaction.setCustomAnimations(R.anim.enter,R.anim.exit,R.anim.enter,R.anim.exit);
transaction.replace(R.id.flContent, new Profile(), "ProfileFragment");
transaction.addToBackStack(null);
viewPager.getAdapter().notifyDataSetChanged();
transaction.commit();
}
我对文件片断:
当我点击“申请开发”按钮,它会调用DevRegistration活动的意图
case 1:
btnBeDeveloper.setText("Apply for Developer");
btnBeDeveloper.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent index = new Intent(getActivity(), DevRegistration.class);
startActivity(index);
}
});
break;
第3步:
在DevRegistration我点击注册后,它会显示一个对话框片段
FragmentManager fm = getSupportFragmentManager();
df_SuccessDevRegistration dialogFragment = new df_SuccessDevRegistration();
dialogFragment.show(fm, "Dev Register.");
现在,这是我的对话片段代码:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
View rootView = inflater.inflate(R.layout.fragment_success_developer_registration, container, false);
btnDevGoProfile = (Button) rootView.findViewById(R.id.btnDevGoProfile);
btnDevGoProfile.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dismiss();
getActivity().finish();
}
});
return rootView;
}
现在我的问题是,当我按下对话框片段上的按钮时,它应该刷新我的配置文件片段。如何实现这一目标?我试图分离附加,但我的应用程序只是坠毁和空例外。
public class Profile extends Fragment {
TextView txvStudID, txvStudUsername, txvStudEmail, txvStudBday,txvProfileName;
CollapsingToolbarLayout ctlName;
ImageView imvProfilePic;
Button btnBeDeveloper;
View rootView;
String picURL;
FragmentTransaction ft; Fragment currentFragment;
/** Recycler View**/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
rootView = inflater.inflate(R.layout.activity_profile, container, false);
Toolbar toolbar = (Toolbar) rootView.findViewById(R.id.profile_toolbar);
((AppCompatActivity)getActivity()).setSupportActionBar(toolbar);
toolbar.setNavigationOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View view) {
NavigationView navigationView = (NavigationView) getActivity().findViewById(R.id.nav_view);
getFragmentManager().popBackStack();
navigationView.getMenu().getItem(0).setChecked(true);
}
});
((AppCompatActivity)getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
((AppCompatActivity)getActivity()).getSupportActionBar().setHomeButtonEnabled(true);
((AppCompatActivity)getActivity()).getSupportActionBar().setDisplayShowTitleEnabled(true);
txvStudID = (TextView) rootView.findViewById(R.id.txvStudID);
txvStudUsername = (TextView) rootView.findViewById(R.id.txvStudUsername);
txvStudEmail = (TextView)rootView.findViewById(R.id.txvStudEmail);
txvStudBday = (TextView) rootView.findViewById(R.id.txvStudBday);
txvProfileName = (TextView) rootView.findViewById(R.id.txvProfileName);
ctlName = (CollapsingToolbarLayout) rootView.findViewById(R.id.ctlName);
imvProfilePic = (ImageView) rootView.findViewById(R.id.imvProfilePic);
btnBeDeveloper = (Button) rootView.findViewById(R.id.btnBeDeveloper);
checkLevelOfAccess();
/** get user's data **/
getCurrentUserData(DataClass.currentEnteredUsername);
return rootView;
}
public void checkLevelOfAccess()
{
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
String acctID = preferences.getString("acctID", "DEFAULT");
switch (checkLevelOfAccess(acctID)) {
// if the level of access is developer
case 1:
btnBeDeveloper.setText("Developer Console");
btnBeDeveloper.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent index = new Intent(getActivity(), UploadApp.class);
startActivity(index);
}
});
break;
// else if the level of access is not a developer
case 0:
switch (checkIfRegistered(acctID))
{
//already apply
case 0:
btnBeDeveloper.setText("Cancel Developer Request");
break;
case 1:
btnBeDeveloper.setText("Apply for Developer");
btnBeDeveloper.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent index = new Intent(getActivity(), DevRegistration.class);
startActivityForResult(index, 10001);
}
});
break;
}
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if ((requestCode == 10001) && (resultCode == Activity.RESULT_OK))
{
System.out.println("IM HERE NA!!!");
checkLevelOfAccess();
}
}
public void getCurrentUserData(String currentUser) {
try {
String accountURL = DataClass.localAddress + "android_php/account.php";
URL url = new URL(accountURL);
connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream stream = connection.getInputStream();
reader = new BufferedReader(new InputStreamReader(stream));
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
String finalJson = buffer.toString();
JSONObject parentObject = new JSONObject(finalJson);
JSONArray parentArray = parentObject.getJSONArray("users");
for (int x = 0; x < parentArray.length(); x++) {
JSONObject finalObject = parentArray.getJSONObject(x);
if (finalObject.getString("username").equalsIgnoreCase(currentUser) || finalObject.getString("studID").equalsIgnoreCase(currentUser)
|| finalObject.getString("email").equalsIgnoreCase(currentUser)) {
txvStudID.setText(finalObject.getString("studID"));
txvStudUsername.setText(finalObject.getString("username"));
txvStudEmail.setText(finalObject.getString("email"));
txvStudBday.setText(convertDate(finalObject.getString("bday")));
ctlName.setTitle(finalObject.getString("name"));
txvProfileName.setText(finalObject.getString("name"));
//set Profile Picture
picURL = DataClass.localAddress + finalObject.getString("pic");
LoadImageFromURL loadImage = new LoadImageFromURL();
loadImage.execute();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
public String convertDate(String date) throws ParseException {
String strCurrentDate = date;
DateFormat inputFormat = new SimpleDateFormat("yyyy-MM-dd");
DateFormat outputFormat = new SimpleDateFormat("dd MMM yyyy");
Date parseDate = inputFormat.parse(strCurrentDate);
String converted = outputFormat.format(parseDate);
return converted;
}
public class LoadImageFromURL extends AsyncTask<String, Void, Bitmap>{
@Override
protected Bitmap doInBackground(String... params) {
// TODO Auto-generated method stub
try {
InputStream is = new URL(picURL).openConnection().getInputStream();
Bitmap bitMap = BitmapFactory.decodeStream(is);
GetCircleBitmap gcb = new GetCircleBitmap();
Bitmap b = gcb.GetCircleBitmap(bitMap);
return b;
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Bitmap result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
imvProfilePic.setImageBitmap(result);
}
}
public int checkLevelOfAccess(String data)
{
try {
String accountURL = DataClass.localAddress + "android_php/account.php";
URL url = new URL(accountURL);
connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream stream = connection.getInputStream();
reader = new BufferedReader(new InputStreamReader(stream));
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
String finalJson = buffer.toString();
JSONObject parentObject = new JSONObject(finalJson);
JSONArray parentArray = parentObject.getJSONArray("users");
for (int x = 0; x < parentArray.length(); x++) {
JSONObject finalObject = parentArray.getJSONObject(x);
// true
if (finalObject.getString("acctid").equalsIgnoreCase(data) && finalObject.getString("acctlofa").equals("1"))
{
return 1;
}
else if (finalObject.getString("acctid").equalsIgnoreCase(data) && finalObject.getString("acctlofa").equals("0"))
{
return 0;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return 2;
}
/** Check if the user already applied to become a developer **/
public int checkIfRegistered(String data) {
try {
String accountURL = DataClass.localAddress + "android_php/developer_account.php";
URL url = new URL(accountURL);
connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream stream = connection.getInputStream();
reader = new BufferedReader(new InputStreamReader(stream));
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
String finalJson = buffer.toString();
JSONObject parentObject = new JSONObject(finalJson);
JSONArray parentArray = parentObject.getJSONArray("users");
for (int x = 0; x < parentArray.length(); x++) {
JSONObject finalObject = parentArray.getJSONObject(x);
// pending application
if (finalObject.getString("acctID").equalsIgnoreCase(data) && finalObject.getString("devStatus").equals("0"))
{
return 0;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return 1;
}
}
如果用户没有立即回到配置文件片段会发生什么?例如,如果用户退出应用并在一周后再次启动该应用,该配置是否应该永久更新?如果是这样,这表明使用某种永久存储来在对话框和片段之间“进行通信”。 –
其实我在这里改变的是按钮文本,但它基于我的数据库,所以它即使在注册后也会改变,我将关闭应用程序,下一次我再次打开应用程序时,用户将无法再访问开发者注册,我唯一的问题是,当我注册,然后我关闭对话框片段,配置文件页面不刷新,除非我关闭配置文件片段,然后我再次打开它。 –
什么方法“片段刷新”?这一切都在'onCreateView()'?这听起来像你需要找到正确的生命周期回调方法来用于“刷新”片段。仔细查看片段生命周期以帮助您了解这一点。如果你确实在'onCreateView()'中做了所有事情,你可能需要将“refresh”逻辑移到'onResume()'。 –