Question

我有一个自定义微调器，在活动中定义了一个ArrayList。在所选项目上，将创建一个新片段。我可以将创建了哪个片段的值（“Single Massage”或“Couples Massage”）传递给同一活动中的另一个片段，然后从该片段传递给另一个活动并更新其textview？这可能不是最好的方法，但我是初学者，所以我真的不知道那么多。这是我的代码。

微调：

public class MassageActivity extends AppCompatActivity {
private Spinner mSpinner;
private Toolbar mToolbar;
private FragmentManager mFragmentManager;
private FragmentTransaction mFragmentTransaction;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_massage);
    mToolbar = (Toolbar) findViewById(R.id.toolbar_massage);
    setSupportActionBar(mToolbar);
    ActionBar ab = getSupportActionBar();
    if (ab != null) {
        ab.setDisplayHomeAsUpEnabled(true);
    }
    if (ab != null) {
        ab.setDisplayShowTitleEnabled(false);
    }
    customSpinner();

    mFragmentManager = getSupportFragmentManager();
}private void customSpinner() {
    final ArrayList<String> massageType = new ArrayList<>();
    massageType.add("Single Massage");
    massageType.add("Couples Massage");
    massageType.add("Pamper Party");
    mSpinner = (Spinner) findViewById(R.id.spinner);

    CustomSpinnerAdapter spinnerAdapter = new CustomSpinnerAdapter(getApplicationContext(), massageType);
    mSpinner.setAdapter(spinnerAdapter);

    mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            if (parent.getItemAtPosition(position).toString()
                    .equals("Pamper Party")) {
                mFragmentTransaction = mFragmentManager.beginTransaction();
                mFragmentTransaction.replace(R.id.fragment_container_massage,
                        new PamperPartyFragment()).commit();
            }
            if (parent.getItemAtPosition(position).toString()
                    .equals("Single Massage")) {
                mFragmentTransaction = mFragmentManager.beginTransaction();
                mFragmentTransaction.replace(R.id.fragment_container_massage,
                        new SingleMassageFragment()).commit();
            }
            if  (parent.getItemAtPosition(position).toString()
                    .equals("Couples Massage")){
                mFragmentTransaction = mFragmentManager.beginTransaction();
                mFragmentTransaction.replace(R.id.fragment_container_massage,
                        new CouplesMassageFragment()).commit();
            }

        }

        @Override
        public void onNothingSelected(AdapterView<?> parent) {

        }
    });

}}

编辑：我跟着并完成了这个：

String spinnerValue = mSpinner.getSelectedItem().toString();
    Intent i = new Intent(this, SingleMassageFragment.class);
    i.putExtra("spinnerValue", spinnerValue);
    setIntent(i);

然后在我的片段中：

MassageActivity activity = (MassageActivity) getActivity();
    Intent f = activity.getIntent();
    String spinnerValue = f.getStringExtra("spinnerValue");
    Utils.doToast(getContext(), spinnerValue);

但无论我选择哪个片段，我总是得到同样的吐司“单身按摩”。这是为什么？对于任何情况，这是我的适配器：

public class CustomSpinnerAdapter extends BaseAdapter {
private Context mContext;
private ArrayList<String> mMassageType;
private LayoutInflater mInflater;
private TextView tvSpinner;

public CustomSpinnerAdapter(Context context, ArrayList<String> massageType) {
    mContext = context;
    mMassageType = massageType;
    mInflater = (LayoutInflater.from(context));
}

@Override
public int getCount() {
    return mMassageType.size();
}

@Override
public Object getItem(int position) {
    return mMassageType.get(position);
}

@Override
public long getItemId(int position) {
    return (long) position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    convertView = mInflater.inflate(R.layout.spinner_layout, null);
    tvSpinner = (TextView) convertView.findViewById(R.id.tvSpinner);
    tvSpinner.setText(mMassageType.get(position));
    return convertView;
}

}

Answer 1

传递数据

 PamperPartyFragment mPamperPartyFragment = new PamperPartyFragment();
    Bundle bundle = new Bundle();
    bundle.putInt(key, value);
    mPamperPartyFragment.setArguments(bundle);

 mFragmentTransaction = mFragmentManager.beginTransaction();
                mFragmentTransaction.replace(R.id.fragment_container_massage,
                      mPamperPartyFragment  ).commit();

用于获取片段中的数据

Bundle bundle = this.getArguments();
int myInt = bundle.getInt(key, defaultValue);

在您的微调器setOnItemSelectedListener中尝试此操作以发送数据

    Bundle bundle = new Bundle();
    bundle.putString("spinnerValue",parent.getItemAtPosition(position).toString());
    mPamperPartyFragment.setArguments(bundle);
    mFragmentTransaction = mFragmentManager.beginTransaction();
    mFragmentTransaction.replace(R.id.fragment_container_massage,
            mPamperPartyFragment  ).commit();

要阅读您的片段中的数据，请在onCreate

中添加此内容

    Bundle bundle = getArguments();
    String selectedVAlue = bundle.getString("spinnerValue");

Answer 2

in activity :

Intent i = new Intent (this, fragmentname.class);
i.putInt(key, value);
setIntent(i);

in fragment :

ActivityName activity = (ActivityName) getActivity();
Intent f= activity.getIntent();    
int yrid = f.getIntExtra(key);

将微调器值从活动传递到片段

2 个答案: