我是一名有用的助手,可以为您翻译文本。
第二个片段的 XML:
第二个片段:
我有一个简单的应用程序,其中一个 Activity 调用了一个 Fragment。
我的问题是,为什么 Activity 的按钮会显示在 Fragment 上?
似乎是一个非常简单的问题...只是无法确定问题所在!
Activity 截图:
片段截图:
请注意,Activity的提交按钮显示在Fragment上,但TextView和EditText被隐藏了。为什么?活动:
package com.example.deep_kulshreshtha.toddsyndrome;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TextInputEditText;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.EditText;
public class MainActivity extends AppCompatActivity {
private TextInputEditText inputEditText;
private EditText editText;
private ToddSyndromeDBHelper dbHelper;
private SQLiteDatabase db;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
// getSupportActionBar().setDisplayHomeAsUpEnabled(true);
// inputEditText = (TextInputEditText) findViewById(R.id.lastNameEditText);
editText = (EditText) findViewById(R.id.editText);
Button submitButton = (Button) findViewById(R.id.submitButton);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
CreateReportFragment fragment = CreateReportFragment.newInstance();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.content_main, fragment, "CreateFragment");
transaction.addToBackStack("CreateBackStack");
transaction.commit();
}
});
dbHelper = new ToddSyndromeDBHelper(this);
}
@Override
protected void onStop() {
super.onStop();
if(db != null) {db.close();}
}
public SQLiteDatabase getDb(){
if(db == null) {
// new ConnectionHelper().execute();
db = dbHelper.getWritableDatabase();
}
return db;
}
public void viewPatientReport(View view){
PatientReportFragment fragment = PatientReportFragment.
newInstance(editText.getText().toString());
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.content_main, fragment, "SearchFragment");
transaction.addToBackStack("SearchBackStack");
transaction.commit();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private class ConnectionHelper extends AsyncTask<Void, Void, SQLiteDatabase>{
@Override
protected SQLiteDatabase doInBackground(Void... params) {
db = dbHelper.getWritableDatabase();
return db;
}
}
}
活动 XML:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.example.deep_kulshreshtha.toddsyndrome.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_main" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
app:srcCompat="@android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
内容 xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/content_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.deep_kulshreshtha.toddsyndrome.MainActivity"
tools:showIn="@layout/activity_main">
<TextView
android:id="@+id/headline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textSize="32dp"
android:fontFamily="cursive"
android:text="@string/todd_syndrome" />
<!-- <android.support.design.widget.TextInputLayout
android:id="@+id/layout_last_name"
android:layout_below="@id/headline"
android:layout_centerHorizontal="true"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TextInputEditText
android:id="@+id/lastNameEditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/edit_text_hint" />
</android.support.design.widget.TextInputLayout>-->
<EditText
android:id="@+id/editText"
android:layout_below="@id/headline"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/edit_text_hint"/>
<Button
android:id="@+id/submitButton"
android:layout_centerHorizontal="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/submit"
android:layout_below="@id/editText"
android:onClick="viewPatientReport"/>
</RelativeLayout>
碎片:
package com.example.deep_kulshreshtha.toddsyndrome;
import android.content.ContentValues;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.Switch;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class CreateReportFragment extends Fragment
implements View.OnClickListener{
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
// private OnFragmentInteractionListener mListener;
String name;
boolean hallucegenicDrugs = false;
int age;
String gender;
boolean migraine = false;
private EditText editText;
private Switch switchMigraine;
private Spinner ageSpinner;
private RadioGroup group;
private Switch switchHall;
private Button saveButton;
private View.OnClickListener radioListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
boolean checked = ((RadioButton)v).isChecked();
gender = ((RadioButton)v).getText().toString();
}
};
public CreateReportFragment() {
// Required empty public constructor
}
// TODO: Rename and change types and number of parameters
public static CreateReportFragment newInstance(/*String param1, String param2*/) {
CreateReportFragment fragment = new CreateReportFragment();
// Bundle args = new Bundle();
// args.putString(ARG_PARAM1, param1);
// args.putString(ARG_PARAM2, param2);
// fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
// mParam1 = getArguments().getString(ARG_PARAM1);
// mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_create_report, container, false);
editText = (EditText) view.findViewById(R.id.createPersonName);
name = editText.getText().toString();
switchMigraine = (Switch) view.findViewById(R.id.migraineToggle);
switchMigraine.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
migraine = false;
}
});
ageSpinner = (Spinner) view.findViewById(R.id.ageSpinner);
List<Integer> list = new ArrayList<>();
for (int i = 1; i <= 100; i++){ list.add(i); }
ArrayAdapter<Integer> adapter = new ArrayAdapter<Integer>(getContext(),
android.R.layout.simple_spinner_item, list);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
ageSpinner.setAdapter(adapter);
ageSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
age = (int) parent.getItemAtPosition(position);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
group = (RadioGroup) view.findViewById(R.id.genderButton);
RadioButton maleRadio = (RadioButton) view.findViewById(R.id.radioMale);
maleRadio.setOnClickListener(radioListener);
RadioButton femaleRadio = (RadioButton) view.findViewById(R.id.radioFemale);
femaleRadio.setOnClickListener(radioListener);
switchHall = (Switch) view.findViewById(R.id.switchButton);
switchHall.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
hallucegenicDrugs = isChecked;
}
});
saveButton = (Button) view.findViewById(R.id.saveButton);
saveButton.setOnClickListener(this);
return view;
}
@Override
public void onClick(View v) {
int syndromePercentage = 0;
Log.v("Deep", "Patient name : " + name);
Log.v("Deep", "Has migraine : " + migraine);
Log.v("Deep", "Patient age : " + age);
Log.v("Deep", "Patient gender : " + gender);
Log.v("Deep", "Drugs ? : " + hallucegenicDrugs);
if(migraine == true){ syndromePercentage += 25; }
if(age <= 15){ syndromePercentage += 25; }
if(gender.equals("Male")){ syndromePercentage += 25; }
if(hallucegenicDrugs == true){ syndromePercentage += 25; }
SQLiteDatabase db = ((MainActivity)getActivity()).getDb();
ContentValues values = new ContentValues();
values.put(PatientTableContract.FeedEntry.COL_NAME_PATIENT_NAME, name);
values.put(PatientTableContract.FeedEntry.COL_NAME_RISK, syndromePercentage);
db.insert(PatientTableContract.FeedEntry.TABLE_NAME, null, values);
Toast.makeText(getContext(), "Data saved successfully !", Toast.LENGTH_SHORT).show();
editText.setText("");
switchMigraine.setChecked(false);
ageSpinner.setSelection(0);
group.clearCheck();
switchHall.setChecked(false);
}
}
片段 XML:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.deep_kulshreshtha.toddsyndrome.CreateReportFragment"
android:background="@android:color/white">
<!-- TODO: Update blank fragment layout -->
<android.support.design.widget.TextInputLayout
android:id="@+id/nameLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TextInputEditText
android:id="@+id/createPersonName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/edit_text_hint" />
</android.support.design.widget.TextInputLayout>
<!-- <TextView
android:id="@+id/migraineText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/nameLayout"
android:text="@string/hint1"/>-->
<Switch
android:id="@+id/migraineToggle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hint1"
android:layout_below="@id/nameLayout"
android:checked="false"
android:layout_margin="10dp"
android:padding="10dp" />
<TextView
android:id="@+id/ageText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/migraineToggle"
android:text="@string/hint2"
android:layout_margin="10dp"/>
<Spinner
android:id="@+id/ageSpinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:prompt="@string/hint2"
android:layout_below="@id/migraineToggle"
android:layout_toRightOf="@id/ageText"
android:layout_margin="10dp"
android:layout_marginLeft="20dp"/>
<!-- <TextView
android:id="@+id/genderText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/ageText"
android:text="@string/hint3"/>-->
<RadioGroup
android:id="@+id/genderButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_below="@id/ageSpinner"
android:checkedButton="@+id/radioMale"
android:layout_margin="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Gender ?"
android:layout_margin="10dp"/>
<RadioButton
android:id="@+id/radioMale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Male"
android:layout_margin="10dp"/>
<RadioButton
android:id="@+id/radioFemale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Female"
android:layout_margin="10dp"/>
</RadioGroup>
<!-- <TextView
android:id="@+id/hallucinogenicText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/genderText"
android:text="@string/hint4"/>
<ToggleButton
android:id="@+id/hallucinogenicToggle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/hallucinogenicText"
android:hint="@string/hint4" />-->
<Switch
android:id="@+id/switchButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/genderButton"
android:text="@string/hint4"
android:checked="false"
android:layout_margin="10dp"/>
<Button
android:id="@+id/saveButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/switchButton"
android:text="Submit"
android:layout_margin="10dp"/>
</RelativeLayout>
第二个片段的 XML:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.deep_kulshreshtha.toddsyndrome.PatientReportFragment"
android:background="@android:color/white">
<!-- TODO: Update blank fragment layout -->
<TextView
android:id="@+id/patientReport"
android:layout_gravity="center_horizontal"
android:layout_marginTop="40dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</FrameLayout>
第二个片段:
package com.example.deep_kulshreshtha.toddsyndrome;
import android.app.Activity;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.example.deep_kulshreshtha.toddsyndrome.PatientTableContract.FeedEntry;
public class PatientReportFragment extends Fragment {
private static final String ARG_PARAM1 = "param1";
private String mParam1;
private MainActivity activity;
private String[] projection = {FeedEntry._ID, FeedEntry.COL_NAME_PATIENT_NAME,
FeedEntry.COL_NAME_RISK};
private String selection = FeedEntry.COL_NAME_PATIENT_NAME + " = ?";
// private OnFragmentInteractionListener mListener;
public PatientReportFragment() {
// Required empty public constructor
}
public static PatientReportFragment newInstance(String param1) {
PatientReportFragment fragment = new PatientReportFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
}
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
TextView textView = (TextView) view.findViewById(R.id.patientReport);
SQLiteDatabase db = ((MainActivity)getActivity()).getDb();
Cursor cursor = db.query(FeedEntry.TABLE_NAME,
projection,
selection,
new String[]{mParam1},
null,
null,
null);
if(cursor.getCount() == 0){
textView.setText("No data found");
return /*view*/;
} else {
cursor.moveToFirst();
int riskPercent = cursor.getInt(cursor.getColumnIndex(FeedEntry.COL_NAME_RISK));
textView.setText("Risk percentage : " + riskPercent );
return /*view*/;
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
((MainActivity)getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_patient_report, container, false);
return view;
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
activity = (MainActivity) context;
}
}
include
有关,因为你已经将它包含进来了,所以现在你有两个按钮而不是一个。我猜你应该从context.xml
中删除它,并在实际需要它的布局中创建它。或者你可以在需要它的活动中以编程方式创建它。 - Ahmed I. Elsayed