Question

我正在制作一个视图寻呼机，为图像制作幻灯片。我从Android开发人员那里获取代码，但我遇到了一些问题，片段未被识别，我认为这是因为我的机器人是2.33。所以要解决我导入一个jar文件android.support.v4.jar 我的问题已经解决，但现在我收到了getfragmentmanager（）未定义的错误另一个问题“新的ViewPager.SimpleOnPageChangeListener（）{}”

类型未定义方法invalidateOptionsMenu（）

这是我的代码，任何人都可以帮忙吗？我的平台是2.3.3，api级别是10，在清单中我有这个

<uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

代码：

package com.example.profilemanagment;

import android.support.v4.app.Fragment;
import android.support.v4.app.*;
import android.content.Intent;
import android.os.Bundle;

import android.support.v4.app.FragmentActivity;
import android.support.v4.app.NavUtils;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.MenuItem;



public class ScreenSlideActivity extends FragmentActivity {
    /**
     * The number of pages (wizard steps) to show in this demo.
     */
    private static final int NUM_PAGES = 5;

    /**
     * The pager widget, which handles animation and allows swiping horizontally to access previous
     * and next wizard steps.
     */
    private ViewPager mPager;

    /**
     * The pager adapter, which provides the pages to the view pager widget.
     */
    private PagerAdapter mPagerAdapter;

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

        // Instantiate a ViewPager and a PagerAdapter.
        mPager = (ViewPager) findViewById(R.id.pager);
        mPagerAdapter = new ScreenSlidePagerAdapter(getFragmentManager());
        mPager.setAdapter(mPagerAdapter);
        mPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
                // When changing pages, reset the action bar actions since they are dependent
                // on which page is currently active. An alternative approach is to have each
                // fragment expose actions itself (rather than the activity exposing actions),
                // but for simplicity, the activity provides the actions in this sample.
                invalidateOptionsMenu();
            }
        });
    }




    /**
     * A simple pager adapter that represents 5 {@link ScreenSlidePageFragment} objects, in
     * sequence.
     */
    private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter {
        public ScreenSlidePagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            return ScreenSlidePageFragment.create(position);
        }

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

Answer 1

从文档中引用。

使用此类（FragmentActivity）而不是新平台的内置片段和加载程序支持时，必须分别使用getSupportFragmentManager()和getSupportLoaderManager()方法来访问这些功能。< / p>

由于您要延长FragmentActivity使用getSupportFragmentManager()

http://developer.android.com/reference/android/support/v4/app/FragmentActivity.html

检查文档

FragmentActivity没有getFragmentManager()

方法getfragmentmanager（）未定义

1 个答案: