Android FragmentStatePagerAdapter пример

Question

Я пытаюсь реализовать этот пример http://developer.android.com/intl/es/reference/android/support/v4/app/FragmentStatePagerAdapter.html Вот код

//FragmentStatePagerSupport.java 
package com.mycompany.fragmentslide; 

import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentManager; 
import android.support.v4.app.FragmentStatePagerAdapter; 
import android.support.v4.app.ListFragment; 
import android.support.v4.view.ViewPager; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.ListView; 
import android.widget.TextView; 

public class FragmentStatePagerSupport extends Activity { 
    static final int NUM_ITEMS = 10; 

    MyAdapter mAdapter; 

    ViewPager mPager; 

    private static String[] cheeses = {"American", "Cheddar", "Jack", "Gamonedo", "Lancashire", "Limburger", "Pepperjack", "Skyr", "Feta", "Asiago"}; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.fragment_pager); 

    mAdapter = new MyAdapter(getFragmentManager()); 

    mPager = (ViewPager)findViewById(R.id.pager); 
    mPager.setAdapter(mAdapter); 

    // Watch for button clicks. 
    Button button = (Button)findViewById(R.id.goto_first); 
    button.setOnClickListener(new View.OnClickListener() { 
     public void onClick(View v) { 
     mPager.setCurrentItem(0); 
     } 
    }); 
    button = (Button)findViewById(R.id.goto_last); 
    button.setOnClickListener(new View.OnClickListener() { 
     public void onClick(View v) { 
     mPager.setCurrentItem(NUM_ITEMS-1); 
     } 
    }); 
    } 

    public static class MyAdapter extends FragmentStatePagerAdapter { 
    public MyAdapter(FragmentManager fm) { 
     super(fm); 
    } 

    @Override 
    public int getCount() { 
     return NUM_ITEMS; 
    } 

    @Override 
    public Fragment getItem(int position) { 
     return ArrayListFragment.newInstance(position); 
    } 
    } 

    public static class ArrayListFragment extends ListFragment { 
    int mNum; 

    /** 
    * Create a new instance of CountingFragment, providing "num" 
    * as an argument. 
    */ 
    static ArrayListFragment newInstance(int num) { 
     ArrayListFragment f = new ArrayListFragment(); 

     // Supply num input as an argument. 
     Bundle args = new Bundle(); 
     args.putInt("num", num); 
     f.setArguments(args); 

     return f; 
    } 

    /** 
    * When creating, retrieve this instance's number from its arguments. 
    */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     mNum = getArguments() != null ? getArguments().getInt("num") : 1; 
    } 

    /** 
    * The Fragment's UI is just a simple text view showing its 
    * instance number. 
    */ 
    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View v = inflater.inflate(R.layout.fragment_pager_list, container, false); 
     View tv = v.findViewById(R.id.text); 
     ((TextView)tv).setText("Fragment #" + mNum); 
     return v; 
    } 

    @Override 
    public void onActivityCreated(Bundle savedInstanceState) { 
     super.onActivityCreated(savedInstanceState); 
     setListAdapter(new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, cheeses)); 
    } 

    @Override 
    public void onListItemClick(ListView l, View v, int position, long id) { 
     Log.i("FragmentList", "Item clicked: " + id); 
    } 
    } 
} 

//fragment_pager.xml 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
       android:orientation="vertical" android:padding="4dip" 
       android:gravity="center_horizontal" 
       android:layout_width="match_parent" android:layout_height="match_parent"> 

    <android.support.v4.view.ViewPager 
     android:id="@+id/pager" 
     android:layout_width="match_parent" 
     android:layout_height="0px" 
     android:layout_weight="1"> 
    </android.support.v4.view.ViewPager> 

    <LinearLayout android:orientation="horizontal" 
        android:gravity="center" android:measureWithLargestChild="true" 
        android:layout_width="match_parent" android:layout_height="wrap_content" 
        android:layout_weight="0"> 
     <Button android:id="@+id/goto_first" 
       android:layout_width="wrap_content" android:layout_height="wrap_content" 
       android:text="@string/first"> 
     </Button> 
     <Button android:id="@+id/goto_last" 
       android:layout_width="wrap_content" android:layout_height="wrap_content" 
       android:text="@string/last"> 
     </Button> 
    </LinearLayout> 
</LinearLayout> 

//fragment_pager_list.xml 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
       android:orientation="vertical" 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       android:background="@android:drawable/gallery_thumb"> 

    <TextView android:id="@+id/text" 
       android:layout_width="match_parent" android:layout_height="wrap_content" 
       android:gravity="center_vertical|center_horizontal" 
       android:textAppearance="?android:attr/textAppearanceMedium" 
       android:text="@string/hello_world"/> 

    <!-- The frame layout is here since we will be showing either 
    the empty view or the list view. --> 
    <FrameLayout 
     android:layout_width="match_parent" 
     android:layout_height="0dip" 
     android:layout_weight="1" > 
     <!-- Here is the list. Since we are using a ListActivity, we 
      have to call it "@android:id/list" so ListActivity will 
      find it --> 
     <ListView android:id="@android:id/list" 
        android:layout_width="match_parent" 
        android:layout_height="match_parent" 
        android:drawSelectorOnTop="false"/> 

     <!-- Here is the view to show if the list is emtpy --> 
     <TextView android:id="@android:id/empty" 
        android:layout_width="match_parent" 
        android:layout_height="match_parent" 
        android:textAppearance="?android:attr/textAppearanceMedium" 
        android:text="No items."/> 

    </FrameLayout> 

</LinearLayout> 

MyAdapter (android.support.v4.app.FragmentManager) в MyAdapter не может быть применен к android.app.FragmentManager

Это моя Gradle конфигурация

apply plugin: 'com.android.application' 

android { 
    compileSdkVersion 22 
    buildToolsVersion "22.0.1" 

    defaultConfig { 
     applicationId "com.mycompany.fragmentslide" 
     minSdkVersion 16 
     targetSdkVersion 22 
     versionCode 1 
     versionName "1.0" 
    } 
    buildTypes { 
     release { 
      minifyEnabled false 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
     } 
    } 
} 

dependencies { 
    compile fileTree(dir: 'libs', include: ['*.jar']) 
    compile 'com.android.support:appcompat-v7:+' 
    compile 'com.android.support:support-v4:+' 
} 

Я попытался изменения Gradle зависимости, но я не могу заставить его работать. Есть ли другой способ или более новый способ сделать это.

Answer 1

Вы используете команду fragmentManager из android.app.FragmentManager с android.support.v4.app.Fragment. Вы должны import android.support.v4.app.FragmentManager и удалите import android.app.FragmentManager Также вам необходимо заменить mAdapter = new MyAdapter(getFragmentManager()); на mAdapter = new MyAdapter(getSupportFragmentManager());