Android工作室中的BottomBar片段

时间：2016-06-19 12:18:05

标签： java android android-fragments

如何在Android工作室的BottomBar中为每个标签添加片段，请为每个标签的列表视图或网格视图提供一个很好的例子。谢谢

5 个答案:

答案 0 :(得分：0)

您需要实现SetOnTabSelectListerner。

bottomBar.setOnTabSelectListener(new OnTabSelectListener() {
            @Override
            public void onTabSelected(@IdRes int tabId) {

                Fragment fragment = null;
                Class fragmentClass = null;

                switch (tabId) {
                    case R.id.tab_one:
                        fragmentClass = TabOneFragment.class;
                        break;
                    case R.id.tab_two:
                        fragmentClass = TabTwoFragment.class;
                        break;
                    case R.id.tab_three:
                        fragmentClass = TabThreeFragment.class;
                        break;
                    case R.id.tab_four:
                        fragmentClass = TabFourFragment.class;
                        break;
                }

                try {
                    fragment = (Fragment) fragmentClass.newInstance();
                } catch (Exception e) {
                    e.printStackTrace();
                }
                FragmentManager fragmentManager = getSupportFragmentManager();
                fragmentManager.beginTransaction().replace(R.id.flContent, fragment).commit();

            }
        });

答案 1 :(得分：0)

main_activity.java 

img

答案 2 :(得分：0)

//网格视图 main_activity.xml 

<ScrollView xmlns:tools="http://schemas.android.com/tools"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
    <GridView
        android:id="@+id/gridview1"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:columnWidth="50dp"
        android:gravity="center"
        android:numColumns="auto_fit"
        android:stretchMode="columnWidth" >
    </GridView>
</RelativeLayout>
</ScrollView>

mainactivity.java

package com.example.harish.mylayoutexamples;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.GridView;
import android.widget.TextView;
import android.widget.Toast;
public class GridActivity extends AppCompatActivity implements AdapterView.OnItemClickListener{
    GridView gridView;
    static final String[] numbers = new String[] {
            "A", "B", "C", "D", "E",
            "F", "G", "H", "I", "J",
            "K", "L", "M", "N", "O",
            "P", "Q", "R", "S", "T",
            "U", "V", "W", "X", "Y", "Z"
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_grid);
        gridView = (GridView) findViewById(R.id.gridview1);
        // Create adapter to set value for grid view
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, numbers);
        gridView.setAdapter(adapter);
        gridView.setOnItemClickListener(this);
    /*    gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View v,
                                    int position, long id) {
                Toast.makeText(getApplicationContext(),
                        ((TextView) v).getText()  , Toast.LENGTH_SHORT).show();
            }
        });*/
    }
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Toast.makeText(getApplicationContext(),
                ((TextView) view).getText()  , Toast.LENGTH_SHORT).show();
    }
}

答案 3 :(得分：0)

main_activity.java 

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity implements communicator {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    @Override
    public void respond(String i) {
        android.support.v4.app.FragmentManager fm=getSupportFragmentManager();
        FragmentB f2= (FragmentB)fm.findFragmentById(R.id.fragment2);
        f2.changedata(i);
    }
}

main_activity.xml 

<?xml version="1.0" encoding="utf-8"?>
<android.widget.LinearLayout 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"
    tools:context="com.example.dhanya.myfragmentcommsimple.MainActivity"
    android:orientation="vertical">
    <fragment
        android:layout_width="match_parent"
        android:layout_height="250dp"
        android:id="@+id/fragment"
        android:name="com.example.dhanya.myfragmentcommsimple.FragmentA">
    </fragment>
    <fragment
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/fragment2"
        android:name="com.example.dhanya.myfragmentcommsimple.FragmentB">
    </fragment>
</android.widget.LinearLayout>

fragment_A.java 

package com.example.dhanya.myfragmentcommsimple;
import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ListView;
public class FragmentA extends Fragment implements View.OnClickListener{
    int count=0;
    Button bt;
    communicator comm;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_, container, false);
    }
    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        comm= (communicator) getActivity();
        bt=(Button)getActivity().findViewById(R.id.btn);
        bt.setOnClickListener(this);
    }
    @Override
    public void onClick(View v) {
         count++;
         comm.respond("The button is clicked "+ count+"   times");
    }
}

FRAGMET_A.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.dhanya.myfragmentcommsimple.FragmentA"
    android:background="#99FF00">
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/btn"
        android:text="counter"
        android:layout_margin="40dp"/>
</FrameLayout>

FRAGMENT_B.java 

package com.example.dhanya.myfragmentcommsimple;
import android.content.Context;
import android.content.res.Resources;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class FragmentB extends Fragment {
    TextView txt;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_fragment_b, container, false);
    }
    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        txt=(TextView)getActivity().findViewById(R.id.tv);
    }
    public void changedata(String i)
    {
       txt.setText(i);
    }
}

FRAGMENT_B.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.dhanya.myfragmentcommsimple.FragmentB"
    android:background="#FFBB00">
    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="haiiii"
        android:id="@+id/tv"
        android:layout_margin="50dp"/>
</FrameLayout>

COMMUNICATOR.java 

package com.example.dhanya.myfragmentcommsimple;
public interface communicator {
    public void respond(String i);
    }

答案 4 :(得分：0)

分段动态加载

主要活动。爪哇

import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
    Button firstFragment, secondFragment;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // get the reference of Button's
        firstFragment = (Button) findViewById(R.id.firstFragment);
        secondFragment = (Button) findViewById(R.id.secondFragment);
        // perform setOnClickListener event on First Button
        firstFragment.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // load First Fragment
                loadFragment(new FirstFragment());
            }
        });
        // perform setOnClickListener event on Second Button
        secondFragment.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // load Second Fragment
                loadFragment(new SecondFragment());
            }
        });
    }
    private void loadFragment(Fragment fragment) {
        // create a FragmentManager
        FragmentManager fm = getFragmentManager();
       // android.support.v4.app.FragmentManager fm=getSupportFragmentManager();
        // create a FragmentTransaction to begin the transaction and replace the Fragment
        FragmentTransaction fragmentTransaction = fm.beginTransaction();
        // replace the FrameLayout with new Fragment
        fragmentTransaction.replace(R.id.frameLayout, fragment);
       //fragmentTransaction.add(R.id.firstFragment,fragment);
        fragmentTransaction.commit(); // save the changes
    }
    @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);
    }
}


MAIN_ACTIVTY.XML

<LinearLayout 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:orientation="vertical"
    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=".MainActivity">
    <!-- display two Button's and a FrameLayout to replace the Fragment's  -->
    <Button
        android:id="@+id/firstFragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/button_background_color"
        android:text="First Fragment"
        android:textColor="@color/white"
        android:textSize="20sp" />
    <Button
        android:id="@+id/secondFragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:background="@color/button_background_color"
        android:text="Second Fragment"
        android:textColor="@color/white"
        android:textSize="20sp" />
    <FrameLayout
        android:id="@+id/frameLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="10dp" />
</LinearLayout>





FIRST_FRAGMENT.JAVA

package com.abhiandroid.fragmentexample;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;
public class FirstFragment extends Fragment {
    View view;
    Button firstButton;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        view = inflater.inflate(R.layout.fragment_first, container, false);
        // get the reference of Button
        firstButton = (Button) view.findViewById(R.id.firstButton);
        // perform setOnClickListener on first Button
        firstButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // display a message by using a Toast
                Toast.makeText(getActivity(), "First Fragment", Toast.LENGTH_LONG).show();
            }
        });
        return view;
    }
}


FIRST_FRAGMENT>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.abhiandroid.fragmentexample.FirstFragment">
    <!--TextView and Button displayed in First Fragment -->
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="100dp"
        android:text="This is First Fragment"
        android:textColor="@color/black"
        android:textSize="25sp" />
    <Button
        android:id="@+id/firstButton"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:background="@color/green"
        android:text="First Fragment"
        android:textColor="@color/white"
        android:textSize="20sp"
        android:textStyle="bold" />
</RelativeLayout>


SECOND_FRAGMENT>JAVA

package com.abhiandroid.fragmentexample;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;
public class SecondFragment extends Fragment {
    View view;
    Button secondButton;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        view = inflater.inflate(R.layout.fragment_second, container, false);
        // get the reference of Button
        secondButton = (Button) view.findViewById(R.id.secondButton);
        // perform setOnClickListener on second Button
        secondButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // display a message by using a Toast
                Toast.makeText(getActivity(), "Second Fragment", Toast.LENGTH_LONG).show();
            }
        });
        return view;
    }
}


SECOND_FRAGMENT>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.abhiandroid.fragmentexample.SecondFragment">
    <!--TextView and Button displayed in Second Fragment -->
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="100dp"
        android:text="This is Second Fragment"
        android:textColor="@color/black"
        android:textSize="25sp" />
    <Button
        android:id="@+id/secondButton"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:background="@color/green"
        android:text="Second Fragment"
        android:textColor="@color/white"
        android:textSize="20sp"
        android:textStyle="bold" />
</RelativeLayout>
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