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這是啓動時的MainActivity。用戶輸入一個數字，然後單擊該按鈕，Intent將他們帶到他們輸入的數字的滑動視圖中。將EditText輸入從活動移動到滑動視圖的片段
public class MainActivity extends AppCompatActivity{
String number;
Button continueButton;
EditText NumberET;
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
continueButton = (Button) findViewById(R.id.ContinueButton);
NumberET = (EditText) findViewById(R.id.etTotalAmount);
continueButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
number = NumberET.getText().toString();
if (number.equals("")) {
Toast.makeText(getApplicationContext(), "Enter Number", Toast.LENGTH_SHORT).show();
} else {
Bundle bundle = new Bundle();
bundle.putString("AMOUNT_KEY", number);
FixedCosts fragment = new FixedCosts();
fragment.setArguments(bundle);
FragmentTransaction t = getSupportFragmentManager().beginTransaction();
t.replace(R.id.container, fragment).commit();
Intent intent = new Intent(MainActivity.this, FragmentActivity.class);
intent.putExtra("NUMBER", number);
startActivity(intent);
}
}
});
}
在片段中，我想設置文本視圖的文本來顯示該數字。我無法將此號碼從此Activity類發送到Fragment。我怎樣才能解決這個問題？
片段：
ublic class FixedCosts extends Fragment {
String amount;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fixed_costs_fragment, container, false);
amount = this.getArguments().getString("AMOUNT_KEY");
TextView TitletextView = (TextView) view.findViewById(R.id.amountTitle);
TitletextView.setText(amount);
return view;}}
下面是設置滑動視圖FragmentActivity：
public class FragmentActivity extends AppCompatActivity {
public static final String MY_CUSTOM_FRAGMENT_KEY = "I_GOT_THE_KEYS";
String MoneyAmount;
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {@link FragmentPagerAdapter} derivative, which will keep every
* loaded fragment in memory. If this becomes too memory intensive, it
* may be best to switch to a
* {@link android.support.v4.app.FragmentStatePagerAdapter}.
*/
private SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {@link ViewPager} that will host the section contents.
*/
private ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment);
/*MoneyAmount = getIntent().getExtras().getString("AmountMoney");*/
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
}
private Fragment createCustomFragment(){
Bundle bundle = new Bundle();
bundle.putString(MY_CUSTOM_FRAGMENT_KEY, MoneyAmount);
PlaceholderFragment placeholderFragment = new PlaceholderFragment();
placeholderFragment.setArguments(bundle);
return placeholderFragment;
}
@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_, 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);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
public PlaceholderFragment() {
}
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber, String MoneyAmount) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
args.putString(MY_CUSTOM_FRAGMENT_KEY, MoneyAmount);
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
Bundle bundle = getArguments();
/*String amount = bundle.getString(MY_CUSTOM_FRAGMENT_KEY);
TextView TitletextView = (TextView) FixedCosts.class.findViewById(R.id.amountTitle);
TitletextView.setText(amount);*/
TextView textView = (TextView) rootView.findViewById(R.id.section_label);
textView.setText(getString(R.string.section_format, getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
/**
* A {@link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
switch (position){
case 0:
FixedCosts fixedCosts = new FixedCosts();
return fixedCosts;
}
return PlaceholderFragment.newInstance(position + 1, MoneyAmount);
}
@Override
public int getCount() {
// Show 3 total pages.
return 3;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "Fixed Costs";
case 1:
return "Long term investments";
case 2:
return "SECTION 3";
}
return null;
}
}
}
我加入的意向開始什麼的代碼。我想我不應該把這件事留下。我的錯。 – Ryan
你的主要問題是什麼？你現在想要什麼？ –
我已經能夠將數據發送到FragmentActivity.class中的onCreateView類。我有辦法將它從那裏發送到我的片段課程？ @Chetan Pushpad – Ryan