小编Jac*_*kWu的帖子

我搜索了所有的日子,我找不到答案......

一切准备就绪,但谷歌地图仍然无法显示片段与标签

我检查我已经打开谷歌地图android v2和正确的API_KEY

我不知道发生了什么!

MainActivity.java:

public class MainActivity extends FragmentActivity implements
        ActionBar.TabListener {

    SectionsPagerAdapter mSectionsPagerAdapter;

    ViewPager mViewPager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        String titles[] = { this.getString(R.string.title_around),
                this.getString(R.string.title_map),
                this.getString(R.string.title_favorite),
                this.getString(R.string.title_achievement), };

        final ActionBar actionBar = getActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        mSectionsPagerAdapter = new SectionsPagerAdapter(
                getSupportFragmentManager());

        mViewPager = (ViewPager) findViewById(R.id.pager);
        mViewPager.setAdapter(mSectionsPagerAdapter);
        mViewPager
                .setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
                    @Override
                    public void onPageSelected(int position) {
                        actionBar.setSelectedNavigationItem(position);
                    }
                });

        for (int i = 0; i < titles.length; i++) {
            actionBar.addTab(actionBar.newTab().setText(titles[i])
                    .setTabListener(this));
        }
    }

    @Override
    public …