以下是我尝试convert我的代码从activity扩展类到fragment的代码，但似乎很难。
我可以请求帮助吗？
活动Java代码
@SuppressLint("NewApi")
public class FileComplaintActivity extends Activity {
private Button buttonSubmit;
private EditText editTextName;
private EditText editTextComplaint;
//private EditText editTextPlateNo;
Bitmap thumbnail;
File pic;
private EditText editTextEmail;
private EditText editTextNo;
private Button button1;
private final static String PREFERENCE_USER = "user";
private Spinner spinnerComplaintType;
private Spinner spinnerVehicleType;
private EditText editTextBodyNo;
private EditText editTextPlateNo;
private EditText editTextLocation;
private EditText editTextDate;
private EditText editTextComplaintDetails;
private String username;
private String complaintType;
private String vehicletype;
private String date;
private int year;
private int month;
private int day;
static final int DATE_PICKER_ID = 1111;
private static final int CAMERA_PIC_REQUEST = 1111;
private ImageView imageViewPhotoReport;
String imageString;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_create_report);
initViews();
}
private void initViews() {
// TODO Auto-generated method stub
buttonSubmit = (Button)findViewById(R.id.buttonSubmit);
username= getUsername();
editTextBodyNo = (EditText)findViewById(R.id.editTextBodyNo);
editTextPlateNo = (EditText)findViewById(R.id.editTextPlate);
editTextLocation = (EditText)findViewById(R.id.editTextLocation);
editTextDate = (EditText)findViewById(R.id.editTextDate);
editTextComplaintDetails = (EditText)findViewById(R.id.editTextComplaintDetails);
button1 = (Button)findViewById(R.id.button1);
spinnerComplaintType = (Spinner)findViewById(R.id.spinnerComplaintType);
ArrayAdapter<CharSequence> adapterComplaint = ArrayAdapter.createFromResource(getBaseContext(), R.array.complaintType, android.R.layout.simple_list_item_1);
spinnerComplaintType.setAdapter(adapterComplaint);
spinnerComplaintType.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View arg1,
int position, long arg3) {
// TODO Auto-generated method stub
complaintType = parent.getItemAtPosition(position).toString();
// Toast.makeText(getApplicationContext(), complaintType, Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
spinnerVehicleType = (Spinner)findViewById(R.id.spinnerVehicleType);
ArrayAdapter<CharSequence> adapterVehicle = ArrayAdapter.createFromResource(getBaseContext(), R.array.vehicleType, android.R.layout.simple_list_item_1);
spinnerVehicleType.setAdapter(adapterVehicle);
spinnerVehicleType.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View arg1,
int position, long arg3) {
// TODO Auto-generated method stub
vehicletype = parent.getItemAtPosition(position).toString();
// Toast.makeText(getApplicationContext(), vehicletype, Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
final Calendar c = Calendar.getInstance();
year = c.get(Calendar.YEAR);
month = c.get(Calendar.MONTH);
day = c.get(Calendar.DAY_OF_MONTH);
editTextDate.setText(new StringBuilder()
// Month is 0 based, just add 1
.append(year)
.append("-")
.append(month + 1)
.append("-").append(day));
imageViewPhotoReport=(ImageView)findViewById(R.id.imageViewPhotoReport);
}
public void buttonDateClicked(View view){
showDialog(DATE_PICKER_ID);
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_PICKER_ID:
// open datepicker dialog.
// set date picker for current date
// add pickerListener listner to date picker
return new DatePickerDialog(this, pickerListener, year, month,day);
}
return null;
}
private DatePickerDialog.OnDateSetListener pickerListener = new DatePickerDialog.OnDateSetListener() {
// when dialog box is closed, below method will be called.
@Override
public void onDateSet(DatePicker view, int selectedYear,
int selectedMonth, int selectedDay) {
year = selectedYear;
month = selectedMonth;
day = selectedDay;
// Show selected date
editTextDate.setText(new StringBuilder()
.append(year)
.append("-")
.append(month + 1)
.append("-").append(day)
);
}
};
@SuppressLint("UnlocalizedSms")
public void buttonClickSubmit(View view){
Toast.makeText(getApplicationContext(), "Message Sent", Toast.LENGTH_SHORT).show();
SmsManager smsManager = SmsManager.getDefault();
// smsManager.sendTextMessage("+639177260573", null, "HAHAHAH", null, null);
smsManager.sendTextMessage("+639178866281", null, "Name: "+editTextName.getText().toString()+" Plate No: "+ editTextPlateNo.getText().toString() + " Complaint: "+editTextComplaint.getText().toString(), null, null);
//finishAffinity();
//Toast.makeText(getApplicationContext(), editTextNo.getText().toString(), Toast.LENGTH_SHORT).show();
}
private String getUsername() {
SharedPreferences preference = getSharedPreferences(PREFERENCE_USER,
MODE_PRIVATE);
username = preference.getString("username", "");
if (!username.isEmpty()) {
return username;
}
return "";
}
public void buttonClickEmail(View view){
String to = "olannataniel@yahoo.com";
String subject = editTextName.getText().toString();
String message = editTextComplaint.getText().toString();
Intent email = new Intent(Intent.ACTION_SEND);
email.putExtra(Intent.EXTRA_EMAIL, new String[]{ to});
//email.putExtra(Intent.EXTRA_CC, new String[]{ to});
//email.putExtra(Intent.EXTRA_BCC, new String[]{to});
email.putExtra(Intent.EXTRA_SUBJECT, subject);
email.putExtra(Intent.EXTRA_TEXT, message);
//need this to prompts email client only
email.setType("message/rfc822");
startActivity(Intent.createChooser(email, "Choose an Email client :"));
}
public void buttonSendClick(View view){
final Calendar c = Calendar.getInstance();
int yyyy = c.get(Calendar.YEAR);
int mm = c.get(Calendar.MONTH);
int dd = c.get(Calendar.DAY_OF_MONTH);
date = yyyy + "-" + (mm+1) + "-" + dd;
SendComplaintTask task = new SendComplaintTask();
try {
String status = task.execute().get();
Toast.makeText(this, status, Toast.LENGTH_SHORT).show();
// Intent intent = new Intent(this, LoginActivity.class);
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
}
public class SendComplaintTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... arg0) {
String url = getResources().getString(R.string.url_addComplaint);
// Toast.makeText(getApplicationContext(), yyyy + "-" + mm + "-" + dd, Toast.LENGTH_SHORT).show();
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(url);
ArrayList<BasicNameValuePair> pairList = new ArrayList<BasicNameValuePair>();
pairList.add(new BasicNameValuePair("complaintType", complaintType));
pairList.add(new BasicNameValuePair("vehicleType", vehicletype));
pairList.add(new BasicNameValuePair("bodyNo", editTextBodyNo
.getText().toString()));
pairList.add(new BasicNameValuePair("plateNo", editTextPlateNo
.getText().toString()));
pairList.add(new BasicNameValuePair("complaintLocation", editTextLocation
.getText().toString()));
pairList.add(new BasicNameValuePair("complaintDate", editTextDate
.getText().toString()));
pairList.add(new BasicNameValuePair("complaintDetails", editTextComplaintDetails
.getText().toString()));
pairList.add(new BasicNameValuePair("complaintImage", imageString));
pairList.add(new BasicNameValuePair("dateFiled", date.toString()));
pairList.add(new BasicNameValuePair("username", username));
try {
post.setEntity(new UrlEncodedFormEntity(pairList));
HttpResponse response = client.execute(post);
BufferedReader reader = new BufferedReader(
new InputStreamReader(response.getEntity().getContent()));
String line = "";
String json = "";
while ((line = reader.readLine()) != null) {
json += line + System.getProperty("line.separator");
}
Log.i("asdf", json);
JSONObject jsonObject = new JSONObject(json);
String status = jsonObject.getString("status");
return status;
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
}
public void buttonTakePhoto(View view){
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, CAMERA_PIC_REQUEST);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_PIC_REQUEST) {
//2
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
imageViewPhotoReport.setImageBitmap(thumbnail);
imageViewPhotoReport.setVisibility(1);
//3
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
thumbnail.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
//4
File file = new File(Environment.getExternalStorageDirectory()+File.separator + "image.jpg");
try {
file.createNewFile();
FileOutputStream fo = new FileOutputStream(file);
//5
fo.write(bytes.toByteArray());
fo.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
imageString = Base64.encodeToString(bytes.toByteArray(),
Base64.NO_WRAP);
// Toast.makeText(getApplicationContext(), "TEST: " + imageString, Toast.LENGTH_SHORT).show();
editTextComplaintDetails.setText(imageString);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.create_report, menu);
return true;
}
}
这是我最初的片段代码
public class WhatsHotFragment extends Fragment {
public WhatsHotFragment(){}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_whats_hot, container, false);
return rootView;
}
}
答案 0 :(得分：3)
what i want to ask is that how can i implement initViews() function in Activity to Fragment
所以
Buttom button
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_whats_hot, container, false);
return rootView;
}
覆盖onActivityCreated
然后
button = (Button)getView()findViewById(R.id.buttonSubmit);
// similarly for other views
初始化onActivitedCreated中的视图没有任何害处。
您还可以在onCreateView
Buttom button
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_whats_hot, container, false);
button = button = (Button)getView()findViewById(R.id.buttonSubmit);
// similarly for other views
return rootView;
}
了解更多信息
http://developer.android.com/guide/components/fragments.html
答案 1 :(得分：2)
片段生命周期与Activity生命周期略有不同。
虽然片段包含onCreate()，onStart()，onResume()等方法，但这些方法与活动的方法相同，但我们设置的片段不同。
片段在其onCreateView()方法中对其用户界面进行了膨胀，该方法返回View。
之后，我们会在onViewCreated()进一步设置。 （例如，设置onClickListeners等）。
当然，你可以在这里找到这一切：http://developer.android.com/guide/components/fragments.html
修改 尽管可以在onActivityCreated（）中设置子视图，但最好在onViewCreated（）中进行设置，因为onViewCreated（）旨在执行此操作，因此它更符合文档。