Tag Archives: Send

Send data from activity to fragment on android II

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Send data from activity to fragment on android II
When it was instanceted of fragment, we can’t to pass data with parameter, The only way is to call fragment’s method from activity.

We need:
– Activity
– Fragment
We instance a fragment from activity. After that We will call a fragment’s method from the activity.

Complete code in github

You can check the activity.

package com.thedeveloperworldisyours.l;

import android.graphics.Color;
import android.support.v4.app.FragmentManager;
import android.support.v4.view.MenuItemCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.SearchView;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";
    private MenuItem mSearchMenuItem;

    private SearchView mSearchView;
    private String mSearchString;
    private static final String SEARCH_KEY = "search";

    FirstFragment mFirstFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // if you saved something on outState you can recover them here
        if (savedInstanceState != null) {
            mSearchString = savedInstanceState.getString(SEARCH_KEY);
        }
        mFirstFragment = new FirstFragment().newInstance();
        replaceFragment();
    }

    // This is called before the activity is destroyed
    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        mSearchString = mSearchView.getQuery().toString();
        outState.putString(SEARCH_KEY, mSearchString);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);

        mSearchMenuItem = menu.findItem(R.id.menu_main_action_search);

        mSearchView = (SearchView) MenuItemCompat.getActionView(mSearchMenuItem);

        customSearView();

        mSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                return true;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                mFirstFragment.refreshString(newText);
                return false;
            }
        });

        return super.onCreateOptionsMenu(menu);
    }

    public void customSearView() {
        SearchView.SearchAutoComplete searchAutoComplete = (SearchView.SearchAutoComplete) mSearchView.findViewById(android.support.v7.appcompat.R.id.search_src_text);
        searchAutoComplete.setHintTextColor(Color.WHITE);
        searchAutoComplete.setTextColor(Color.WHITE);

        View searchPlate = mSearchView.findViewById(android.support.v7.appcompat.R.id.search_plate);
        searchPlate.setBackgroundResource(R.drawable.background_search);

        mSearchView.setIconifiedByDefault(false);
    }


    public void replaceFragment() {

        try {

            FragmentManager fragmentManager = getSupportFragmentManager();
            fragmentManager.beginTransaction().replace(R.id.content_main, mFirstFragment, "tag").commit();

        } catch (Exception e) {
            Log.d(TAG, e.toString());
        }

    }


}

Complete code in github

Send data from activity to fragment in android

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14

Update

Send data from activity to fragment in android

In this example We learn how to send two string from Activity to fragment.

Android recommends to use newInstance.

In the activity:

FirstFragment fragment = FirstFragment.newInstance("Param One","Param Two");

In the fragment:

    public static FirstFragment newInstance(String param1, String param2) {
        FirstFragment fragment = new FirstFragment();
        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);
        }
    }


From Activity you send data with intent as:

public class MainActivity extends AppCompatActivity {
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
 
    public void goToFragment(View view) {
        FirstFragment fragment = FirstFragment.newInstance("Param One","Param Two");
 
        replaceFragment(fragment, "FirstFragment");
        view.setVisibility(View.GONE);
    }
 
 
 
    public void replaceFragment(Fragment fragment, String tag) {
 
        try {
 
            FragmentManager fragmentManager = getSupportFragmentManager();
            fragmentManager.beginTransaction().replace(R.id.content_main, fragment, tag).commit();
 
        } catch (Exception e) {
            Log.d(TAG, e.toString());
        }
 
    }
}

and in Fragment onCreateView method:

public class FirstFragment extends Fragment {
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";
 
    private String mParam1;
    private String mParam2;
 
    public FirstFragment() {
        // Required empty public constructor
    }
 
    /**
     * Use this factory method to create a new instance of
     * this fragment using the provided parameters.
     *
     * @param param1 Parameter 1.
     * @param param2 Parameter 2.
     * @return A new instance of fragment FirstFragment.
     */
    public static FirstFragment newInstance(String param1, String param2) {
        FirstFragment fragment = new FirstFragment();
        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_first, container, false);
        TextView textView1 = (TextView) view.findViewById(R.id.fragment_first_param_one);
        TextView textView2 = (TextView) view.findViewById(R.id.fragment_first_param_two);
 
        textView1.setText(mParam1);
        textView2.setText(mParam2);
 
        return view;
    }
 
    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
    }
 
    @Override
    public void onDetach() {
        super.onDetach();
    }
 
}

fragment_first.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.javier.activitytofragment.FirstFragment">
 
    <TextView
        android:id="@+id/fragment_first_param_one"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="@string/hello_blank_fragment" />
 
    <TextView
        android:id="@+id/fragment_first_param_two"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_below="@+id/fragment_first_param_one"
        android:text="@string/hello_blank_fragment" />
 
</RelativeLayout>

contentent_main.xml(This content has the fragment)

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/content_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
 
</RelativeLayout>

content_activity.xml (This content has the activity)

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
 
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:onClick="goToFragment" />
 
</RelativeLayout>

activity_main.xml(this layout has the contents)

<?xml version="1.0" encoding="utf-8"?>
<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.javier.activitytofragment.MainActivity">
 
    <include layout="@layout/content_activity" />
    <include layout="@layout/content_main" />
</RelativeLayout>